- About Oracle AI Database 26ai
- Install 26ai Tips
- Oracle AI Database(show parameter)
- New Features in 23.26.1
- oracle 26ai parameter list
- Good Day
Oracle AI Database 26ai
About Oracle AI Database 26ai
Oracle AI Database 26ai (23.26.1) Enterprise Edition for Linux x86-64 will be officially available at 9am PT today.
These software download locations will display links for this release at that time:
An announcement blog post GA of Oracle AI Database 26ai for Linux x86-64 on-premises platforms:
V1054592-01.zip
Install Version:
Install 26ai Tips
Database Installation Guide for Linux
Verify Your System:
cat /etc/redhat-release
uname -r
[root@onp26ai ~]# cat /etc/redhat-release
Red Hat Enterprise Linux release 9.6 (Plow)
[root@onp26ai ~]# uname -r
6.12.0-105.51.5.el9uek.x86_64
[root@onp26ai ~]#
Installing Oracle Oracle AI Database Preinstallation RPM Using the Oracle Linux yum Server
dnf install oracle-ai-database-preinstall-26ai
[root@onp26ai ~]# id oracle
uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(oper),54324(backupdba),54325(dgdba),54326(kmdba),54330(racdba)
[root@onp26ai ~]#
Group Purposes:
oinstall: Oracle Inventory group (primary)
dba: Database Administrator (SYSDBA)
oper: Database Operator (SYSOPER)
backupdba: Backup and Recovery (SYSBACKUP)
dgdba: Data Guard (SYSDG)
kmdba: Encryption Key Management (SYSKM)
racdba: Real Application Clusters
dnf install -y \
bc \
binutils \
compat-openssl11 \
elfutils-libelf \
fontconfig \
glibc \
glibc-devel \
glibc-headers \
ksh \
libaio \
libasan \
liblsan \
libX11 \
libXau \
libXi \
libXrender \
libXtst \
libxcrypt-compat \
libgcc \
libibverbs \
librdmacm \
libstdc++ \
libxcb \
libvirt-libs \
make \
policycoreutils \
policycoreutils-python-utils \
smartmontools \
sysstat
Configure kernel resource limits for the oracle user:
tee -a /etc/security/limits.conf << 'EOF'
# Oracle Database resource limits
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft stack 10240
oracle hard stack 32768
oracle soft memlock 28835840
oracle hard memlock 28835840
EOF
Limit Explanations:
nofile: Maximum number of open file descriptors
nproc: Maximum number of processes
stack: Maximum stack size (KB)
memlock: Maximum locked memory (KB)
Create Directory Structure
# Create directories as root
sudo mkdir -p /u01/app/oracle
sudo mkdir -p /u01/app/oraInventory
# Set ownership
sudo chown -R oracle:oinstall /u01/app/oracle
sudo chown -R oracle:oinstall /u01/app/oraInventory
# Set permissions
sudo chmod -R 775 /u01/app
/u01/app/oracle: Oracle Base directory
/u01/app/oraInventory: Oracle Inventory location
/u01/stage: Staging area for installation files
Upload and Extract Installation Files
# Switch to oracle user
sudo su - oracle
# Create Oracle Home directory
mkdir -p /u01/app/oracle/product/23.0.0/dbhome_1
# Navigate to Oracle Home
cd /u01/app/oracle/product/23.0.0/dbhome_1
unzip -q /tmp/V1054592-01.zip
Unzip Install file logs:
[root@onp26ai tmp]# su - oracle
[oracle@onp26ai ~]$ cd /u01/app/oracle/product/23.0.0/dbhome_1
[oracle@onp26ai ~]$ mkdir -p /u01/app/oracle/product/23.0.0/dbhome_1
[oracle@onp26ai ~]$ cd /u01/app/oracle/product/23.0.0/dbhome_1
[oracle@onp26ai dbhome_1]$ unzip -q /tmp/V1054592-01.zip
Run Silent Installation(password: welcome1) Execute the Oracle installer in silent mode to install software and create the database:
./runInstaller -silent -createDatabase \
-OSDBA dba \
-OSBACKUPDBA backupdba \
-OSDGDBA dgdba \
-OSKMDBA kmdba \
-OSRACDBA racdba \
-OSOPER oper \
-installEdition EE \
-ORACLE_BASE /u01/app/oracle \
-dataLocation /u01/app/oracle/oradata \
-gdbName orclcdb.example.com \
-pdbName pdb1 \
-dbSID orclcdb \
-memoryLimit 4000 \
-INVENTORY_LOCATION /u01/app/oraInventory \
-useSamePasswordForAllSchemas \
-ignorePrereq
Installation Parameters:
-createDatabase: Creates database during installation
-installEdition EE: Enterprise Edition
-gdbName: Global database name (CDB)
-pdbName: Pluggable database name
-dbSID: System identifier
-memoryLimit: Memory in MB (4000 = 4 GB)
-useSamePasswordForAllSchemas: Simplifies password management
-ignorePrereq: Bypasses prerequisite checks (use cautiously)
Logs:
[oracle@onp26ai dbhome_1]$ ./runInstaller -silent -createDatabase \
-OSDBA dba \
-OSBACKUPDBA backupdba \
-OSDGDBA dgdba \
-OSKMDBA kmdba \
-OSRACDBA racdba \
-OSOPER oper \
-installEdition EE \
-ORACLE_BASE /u01/app/oracle \
-dataLocation /u01/app/oracle/oradata \
-gdbName orclcdb.example.com \
-pdbName pdb1 \
-dbSID orclcdb \
-memoryLimit 4000 \
-INVENTORY_LOCATION /u01/app/oraInventory \
-useSamePasswordForAllSchemas \
-ignorePrereq
Launching Oracle AI Database Setup Wizard...
Enter ALLSCHEMA password:
Confirm password:
[WARNING] [INS-30011] The ADMIN password entered does not conform to the Oracle recommended standards.
CAUSE: Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
ACTION: Provide a password that conforms to the Oracle recommended standards.
[WARNING] [INS-13014] Target environment does not meet some optional requirements.
CAUSE: Some of the optional prerequisites are not met. See logs for details. installActions2026-01-28_03-09-58AM.log.
ACTION: Identify the list of failed prerequisite checks from the log: installActions2026-01-28_03-09-58AM.log. Then either from the log file or from installation manual find the appropriate configuration to meet the prerequisites and fix it manually.
The response file for this session can be found at:
/u01/app/oracle/product/23.0.0/dbhome_1/install/response/db_2026-01-28_03-09-58AM.rsp
You can find the log of this install session at:
/tmp/InstallActions2026-01-28_03-09-58AM/installActions2026-01-28_03-09-58AM.log
As a root user, run the following script(s):
1. /u01/app/oraInventory/orainstRoot.sh
2. /u01/app/oracle/product/23.0.0/dbhome_1/root.sh
Run /u01/app/oraInventory/orainstRoot.sh on the following nodes:
[onp26ai]
Run /u01/app/oracle/product/23.0.0/dbhome_1/root.sh on the following nodes:
[onp26ai]
Successfully Setup Software with warning(s).
Run the 'runInstaller -executeConfigTools' command to complete the configuration.
Moved the install session logs to:
/u01/app/oraInventory/logs/InstallActions2026-01-28_03-09-58AM
[oracle@onp26ai dbhome_1]$ cd /u01/app/oraInventory/logs/InstallActions2026-01-28_03-09-58AM
[oracle@onp26ai InstallActions2026-01-28_03-09-58AM]$ ls -tlr
total 9124
-rw-r-----. 1 oracle oinstall 129 Jan 28 03:11 installerPatchActions_2026-01-28_03-09-58AM.log
-rw-r-----. 1 oracle oinstall 7402703 Jan 28 03:11 installActions2026-01-28_03-09-58AM.log
-rw-r-----. 1 oracle oinstall 68632 Jan 28 03:11 time2026-01-28_03-09-58AM.log
-rw-r-----. 1 oracle oinstall 131 Jan 28 03:11 oraInstall2026-01-28_03-09-58AM.out
-rw-r-----. 1 oracle oinstall 0 Jan 28 03:11 oraInstall2026-01-28_03-09-58AM.err
-rw-r-----. 1 oracle oinstall 1857042 Jan 28 03:11 installActions2026-01-28_03-09-58AM.out
-rw-r-----. 1 oracle oinstall 0 Jan 28 03:11 installActions2026-01-28_03-09-58AM.err
[oracle@onp26ai InstallActions2026-01-28_03-09-58AM]$
Execute Root Scripts:After installation completes, run the required root scripts as indicated by the installer:
# Exit oracle user session
exit
# Run as root
sudo /u01/app/oraInventory/orainstRoot.sh
sudo /u01/app/oracle/product/23.0.0/dbhome_1/root.sh
[root@onp26ai tmp]# sudo /u01/app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
[root@onp26ai tmp]# sudo /u01/app/oracle/product/23.0.0/dbhome_1/root.sh
Check /u01/app/oracle/product/23.0.0/dbhome_1/install/root_onp26ai_2026-01-28_03-13-38-738909472.log for the output of root script
[root@onp26ai tmp]#
Configure Network and Database(password: welcome1)
It will:
- Run NETCA (Network Configuration Assistant) to create the listener
- Run DBCA (Database Configuration Assistant) to create the database
executeConfigTools: Runs NETCA and DBCA automatically (The -executeConfigTools flag can only be used for an Oracle home software that has been already installed using the configure or upgrade options. Ensure that the orainstRoot.sh script, from the inventory location, has been run.)
# Switch back to oracle user
sudo su - oracle
# Navigate to Oracle Home
cd /u01/app/oracle/product/23.0.0/dbhome_1
# Run configuration tools
./runInstaller -silent \
-useSamePasswordForAllSchemas \
-executeConfigTools
[oracle@onp26ai dbhome_1]$ ./runInstaller -silent \
-useSamePasswordForAllSchemas \
-executeConfigTools
Launching Oracle AI Database Setup Wizard...
Enter ALLSCHEMA password:
Confirm password:
[WARNING] [INS-30011] The ADMIN password entered does not conform to the Oracle recommended standards.
CAUSE: Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
ACTION: Provide a password that conforms to the Oracle recommended standards.
You can find the logs of this session at:
/u01/app/oraInventory/logs/InstallActions2026-01-28_03-14-36AM
[ Start ] NETCA - 2026-01-28 03:14:46.796
Command: /bin/sh -c /u01/app/oracle/product/23.0.0/dbhome_1/bin/netca /orahome /u01/app/oracle/product/23.0.0/dbhome_1 /instype typical /inscomp client,oraclenet,javavm,server,ano /insprtcl tcp /cfg local /authadp NO_VALUE /responseFile /u01/app/oracle/product/23.0.0/dbhome_1/network/install/netca_typ.rsp /silent /orahnam OraDB23Home1 /ouiinternal
Parsing command line arguments:
Parameter "orahome" = /u01/app/oracle/product/23.0.0/dbhome_1
Parameter "instype" = typical
Parameter "inscomp" = client,oraclenet,javavm,server,ano
Parameter "insprtcl" = tcp
Parameter "cfg" = local
Parameter "authadp" = NO_VALUE
Parameter "responsefile" = /u01/app/oracle/product/23.0.0/dbhome_1/network/install/netca_typ.rsp
Parameter "silent" = true
Parameter "orahnam" = OraDB23Home1
Parameter "ouiinternal" = true
Done parsing command line arguments.
Oracle Net Services Configuration:
Profile configuration complete.
Oracle Net Listener Startup:
Running Listener Control:
/u01/app/oracle/product/23.0.0/dbhome_1/bin/lsnrctl start LISTENER
Listener Control complete.
Listener started successfully.
Listener configuration complete.
Oracle Net Services configuration successful. The exit code is 0
[ Exit Code ] 0
[ End ] NETCA - 2026-01-28 03:14:47.911
[ Start ] DBCA - 2026-01-28 03:14:47.962
Command: /bin/sh -c /u01/app/oracle/product/23.0.0/dbhome_1/bin/dbca -silent -createDatabase -templateName General_Purpose.dbc -createAsContainerDatabase true -pdbName pdb1 -numberOfPDBs 1 -sid orclcdb -gdbName orclcdb.example.com -emConfiguration NONE -storageType FS -datafileDestination /u01/app/oracle/oradata -datafileJarLocation /u01/app/oracle/product/23.0.0/dbhome_1/assistants/dbca/templates -characterset AL32UTF8 -obfuscatedPasswords false -recoveryAreaDestination NONE -automaticMemoryManagement false -totalMemory 4000 -maskPasswords false -ignorePrereqFailure -skipEnforcePasswordComplexityCheck true -oui_internal
SYS_PASSWORD_PROMPT
SYSTEM_PASSWORD_PROMPT
PDB_ADMIN_PASSWORD_PROMPT
[WARNING] [DBT-06208] The 'SYS' password entered does not conform to the Oracle recommended standards.
CAUSE:
a. Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
b.The password entered is a keyword that Oracle does not recommend to be used as password
ACTION: Specify a strong password. If required refer Oracle documentation for guidelines.
[WARNING] [DBT-06208] The 'SYSTEM' password entered does not conform to the Oracle recommended standards.
CAUSE:
a. Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
b.The password entered is a keyword that Oracle does not recommend to be used as password
ACTION: Specify a strong password. If required refer Oracle documentation for guidelines.
[WARNING] [DBT-06208] The 'PDBADMIN' password entered does not conform to the Oracle recommended standards.
CAUSE:
a. Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9].
b.The password entered is a keyword that Oracle does not recommend to be used as password
ACTION: Specify a strong password. If required refer Oracle documentation for guidelines.
Prepare for db operation
8% complete
Copying database files
31% complete
Creating and starting Oracle instance
32% complete
36% complete
39% complete
42% complete
46% complete
Completing Database Creation
51% complete
53% complete
54% complete
Creating Pluggable Databases
58% complete
77% complete
Executing Post Configuration Actions
100% complete
Database creation complete. For details check the logfiles at:
/u01/app/oracle/cfgtoollogs/dbca/orclcdb.
Database Information:
Global Database Name:orclcdb.example.com
System Identifier(SID):orclcdb
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/orclcdb/orclcdb.log" for further details.
Successfully Configured Software.
[ Exit Code ] 0
[ End ] DBCA - 2026-01-28 03:18:57.414
[oracle@onp26ai dbhome_1]$
Set Environment Variables
# Switch to oracle user
sudo su - oracle
# Edit .bash_profile
cat >> ~/.bash_profile << 'EOF'
# Oracle Environment
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/u01/app/oracle/product/23.0.0/dbhome_1
export ORACLE_SID=orclcdb
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH
EOF
# Apply changes
source ~/.bash_profile
Verify Installation and connection.
[oracle@onp26ai ~]$ $ORACLE_HOME/OPatch/opatch lspatches
38743688;OCW RELEASE UPDATE 23.26.1.0.0 (GOLD IMAGE) (38743688) Gold Image
38743669;Database Release Update : 23.26.1.0.0 (38743669) Gold Image
OPatch succeeded.
[oracle@onp26ai ~]$
[oracle@onp26ai ~]$ sql system/welcome1@localhost/pdb1.example.com
SQLcl: Release 25.4 Production on Wed Jan 28 03:28:39 2026
Copyright (c) 1982, 2026, Oracle. All rights reserved.
Last Successful login time: Wed Jan 28 2026 03:28:39 +00:00
Connected to:
Oracle AI Database 26ai Enterprise Edition Release 23.26.1.0.0 - Production
Version 23.26.1.0.0
SQL> select banner from v$version;
BANNER
______________________________________________________________________________
Oracle AI Database 26ai Enterprise Edition Release 23.26.1.0.0 - Production
SQL> exit
[oracle@onp26ai ~]$ sqlplus system/welcome1@localhost/pdb1.example.com
SQL*Plus: Release 23.26.1.0.0 - Production on Wed Jan 28 03:29:39 2026
Version 23.26.1.0.0
Copyright (c) 1982, 2025, Oracle. All rights reserved.
Last Successful login time: Wed Jan 28 2026 03:28:39 +00:00
Connected to:
Oracle AI Database 26ai Enterprise Edition Release 23.26.1.0.0 - Production
Version 23.26.1.0.0
SQL> exit
Disconnected from Oracle AI Database 26ai Enterprise Edition Release 23.26.1.0.0 - Production
Version 23.26.1.0.0
[oracle@onp26ai ~]$
Automatic Startup Setting(Change the field from N to Y:)
vi /etc/oratab
[root@onp26ai ~]# cat /etc/oratab | tail -1
orclcdb:/u01/app/oracle/product/23.0.0/dbhome_1:Y
[root@onp26ai ~]#
tee /etc/systemd/system/oracle-database-orclcdb.service << 'EOF'
[Unit]
Description=Oracle Database Service
After=network.target
[Service]
Type=forking
User=oracle
Group=oinstall
Environment="ORACLE_HOME=/u01/app/oracle/product/23.0.0/dbhome_1"
Environment="ORACLE_SID=orclcdb"
Environment="PATH=/u01/app/oracle/product/23.0.0/dbhome_1/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin"
Environment="LD_LIBRARY_PATH=/u01/app/oracle/product/23.0.0/dbhome_1/lib"
ExecStart=/bin/bash /u01/app/oracle/product/23.0.0/dbhome_1/bin/dbstart /u01/app/oracle/product/23.0.0/dbhome_1
ExecStop=/bin/bash /u01/app/oracle/product/23.0.0/dbhome_1/bin/dbshut /u01/app/oracle/product/23.0.0/dbhome_1
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target
EOF
# Enable the service
sudo systemctl daemon-reload
sudo systemctl enable oracle-database-orclcdb.service
# Test
systemctl stop oracle-database-orclcdb
systemctl start oracle-database-orclcdb
[root@onp26ai ~]# systemctl stop oracle-database-orclcdb
[root@onp26ai ~]# ps -ef | grep smon
root 68285 10400 0 03:42 pts/0 00:00:00 grep --color=auto smon
[root@onp26ai ~]# systemctl start oracle-database-orclcdb
[root@onp26ai ~]# ps -ef | grep smon
oracle 68459 1 0 03:42 ? 00:00:00 ora_smon_orclcdb
root 68885 10400 0 03:42 pts/0 00:00:00 grep --color=auto smon
[root@onp26ai ~]#
Others Setting:
Setting timezone:
timedatectl list-timezones
timedatectl list-timezones | grep -i shang
timedatectl set-timezone Asia/Shanghai
Setting firewalld:
systemctl stop firewalld
systemctl disable firewalld
Setting SELINUX:
sed -i -e "s|SELINUX=enforcing|SELINUX=permissive|g" /etc/selinux/config
setenforce permissive
Setting oracle user password:
echo oracle:"$ORACLE_PASSWORD" | sudo chpasswd
echo oracle:"welcome1" | sudo chpasswd
Setting Save PDB state:
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 MOUNTED
SQL> alter pluggable database all open;
Pluggable database altered.
SQL> alter pluggable database all save state;
Pluggable database altered.
SQL>
Oracle AI Database(show parameter)
show parameter value as below.
SQL> show parameter
NAME TYPE VALUE
--------------------------------------------- ----------- --------------------------------------------------------------------------------------------
DBFIPS_140 boolean FALSE
_instance_recovery_bloom_filter_size integer 1048576
adg_account_info_tracking string LOCAL
adg_redirect_dml boolean FALSE
alert_log_max_size big integer 1000M
allow_global_dblinks boolean FALSE
allow_group_access_to_sga boolean FALSE
allow_legacy_reco_protocol boolean TRUE
allow_rowid_column_type boolean FALSE
allow_weak_crypto boolean TRUE
approx_for_aggregation boolean FALSE
approx_for_count_distinct boolean FALSE
approx_for_percentile string NONE
aq_tm_processes integer 1
archive_lag_target integer 0
asm_diskstring string
asm_preferred_read_failure_groups string
audit_file_dest string /u01/app/oracle/product/23.0.0/dbhome_1/rdbms/audit
audit_sys_operations boolean FALSE
audit_syslog_level string
audit_trail string NONE
auto_start_pdb_services boolean FALSE
autotask_max_active_pdbs integer 2
awr_pdb_autoflush_enabled boolean TRUE
awr_pdb_max_parallel_slaves integer 10
awr_snapshot_time_offset integer 0
background_core_dump string partial
background_dump_dest string /u01/app/oracle/product/23.0.0/dbhome_1/rdbms/log
backup_tape_io_slaves boolean FALSE
bitmap_merge_area_size integer 1048576
blank_trimming boolean FALSE
blockchain_table_max_no_drop integer
blockchain_table_retention_threshold integer 16
buffer_pool_keep string
buffer_pool_recycle string
calendar_fiscal_year_start string
cdb_cluster boolean FALSE
cdb_cluster_name string
cell_offload_compaction string ADAPTIVE
cell_offload_decryption boolean TRUE
cell_offload_parameters string
cell_offload_plan_display string AUTO
cell_offload_processing boolean TRUE
cell_offloadgroup_name string
circuits integer
client_prefetch_rows integer 0
client_result_cache_lag big integer 3000
client_result_cache_size big integer 0
client_statistics_level string TYPICAL
clonedb boolean FALSE
clonedb_dir string
cloud_table_commit_threshold integer 0
cluster_database boolean FALSE
cluster_interconnects string
commit_logging string
commit_point_strength integer 1
commit_wait string
commit_write string
common_user_prefix string C##
compatible string 23.6.0
connection_brokers string ((TYPE=DEDICATED)(BROKERS=2)(CONNECTIONS=2000)), ((TYPE=EMON)(BROKERS=1))
container_data string ALL
containers_parallel_degree integer 65535
control_file_record_keep_time integer 7
control_files string /u01/app/oracle/oradata/ORCLCDB/control01.ctl, /u01/app/oracle/oradata/ORCLCDB/control02.ctl
control_management_pack_access string DIAGNOSTIC+TUNING
core_dump_dest string /u01/app/oracle/diag/rdbms/orclcdb/orclcdb/cdump
cpu_count string 4
cpu_min_count string 4
create_bitmap_area_size integer 8388608
create_stored_outlines string
cursor_bind_capture_destination string memory+disk
cursor_invalidation string IMMEDIATE
cursor_sharing string EXACT
cursor_space_for_time boolean FALSE
data_guard_max_io_time integer 240
data_guard_max_longio_time integer 240
data_guard_sync_latency integer 0
data_transfer_cache_size big integer 0
db_16k_cache_size big integer 0
db_2k_cache_size big integer 0
db_32k_cache_size big integer 0
db_4k_cache_size big integer 0
db_8k_cache_size big integer 0
db_big_table_cache_percent_target string 0
db_block_buffers integer 0
db_block_checking string FALSE
db_block_checksum string TYPICAL
db_block_size integer 8192
db_cache_advice string ON
db_cache_size big integer 0
db_create_file_dest string
db_create_online_log_dest_1 string
db_create_online_log_dest_2 string
db_create_online_log_dest_3 string
db_create_online_log_dest_4 string
db_create_online_log_dest_5 string
db_domain string example.com
db_file_multiblock_read_count integer 128
db_file_name_convert string
db_files integer 200
db_flash_cache_file string
db_flash_cache_size big integer 0
db_flashback_log_dest string
db_flashback_log_dest_size big integer 0
db_flashback_retention_target integer 1440
db_index_compression_inheritance string NONE
db_keep_cache_size big integer 0
db_lost_write_protect string AUTO
db_name string orclcdb
db_performance_profile string
db_recovery_auto_rekey string ON
db_recovery_file_dest string
db_recovery_file_dest_size big integer 0
db_recycle_cache_size big integer 0
db_securefile string PREFERRED
db_ultra_safe string OFF
db_unique_name string orclcdb
db_unrecoverable_scn_tracking boolean TRUE
db_writer_processes integer 1
dbnest_enable string NONE
dbnest_pdb_fs_conf string
dbwr_io_slaves integer 0
ddl_lock_timeout integer 0
debug_log_max_size big integer 1000M
default_credential string
default_sharing string metadata
deferred_segment_creation boolean TRUE
dg_broker_config_file1 string /u01/app/oracle/product/23.0.0/dbhome_1/dbs/dr1orclcdb.dat
dg_broker_config_file2 string /u01/app/oracle/product/23.0.0/dbhome_1/dbs/dr2orclcdb.dat
dg_broker_start boolean FALSE
diagnostic_dest string /u01/app/oracle
diagnostics_control string IGNORE
directory_prefixes_allowed string
disable_pdb_feature big integer 0
disk_asynch_io boolean TRUE
dispatchers string (PROTOCOL=TCP) (SERVICE=orclcdbXDB)
distributed_lock_timeout integer 60
dml_locks integer 2216
dnfs_batch_size integer 4096
drcp_connection_limit integer 0
drcp_dedicated_opt string NO
dst_upgrade_insert_conv boolean TRUE
enable_automatic_maintenance_pdb boolean TRUE
enable_ddl_logging boolean FALSE
enable_dnfs_dispatcher boolean FALSE
enable_goldengate_replication boolean FALSE
enable_imc_with_mira boolean FALSE
enable_per_pdb_drcp boolean FALSE
enable_pluggable_database boolean TRUE
enabled_PDBs_on_standby string *
encrypt_new_tablespaces string CLOUD_ONLY
error_message_details string ON
event string
external_keystore_credential_location string
fal_client string
fal_server string
fast_start_io_target integer 0
fast_start_mttr_target integer 0
fast_start_parallel_rollback string LOW
file_mapping boolean FALSE
fileio_network_adapters string
filesystemio_options string none
fixed_date string
forward_listener string
gcs_server_processes integer 0
global_names boolean FALSE
global_txn_processes integer 1
group_by_position_enabled boolean FALSE
hash_area_size integer 131072
heartbeat_batch_size integer 5
heat_map string OFF
hi_shared_memory_address integer 0
hs_autoregister boolean TRUE
http_proxy string
hybrid_read_only boolean FALSE
identity_provider_config string
identity_provider_type string NONE
ifile file
ignore_session_set_param_errors string
inmemory_adg_enabled boolean TRUE
inmemory_automatic_level string OFF
inmemory_clause_default string
inmemory_deep_vectorization boolean TRUE
inmemory_expressions_usage string ENABLE
inmemory_force string DEFAULT
inmemory_graph_algorithm_execution string DEFAULT
inmemory_max_populate_servers integer 0
inmemory_optimized_arithmetic string DISABLE
inmemory_optimized_date string DISABLE
inmemory_prefer_xmem_memcompress string
inmemory_prefer_xmem_priority string
inmemory_query string ENABLE
inmemory_size big integer 0
inmemory_trickle_repopulate_servers_percent integer 1
inmemory_virtual_columns string MANUAL
inmemory_xmem_size big integer 0
instance_abort_delay_time integer 0
instance_groups string
instance_mode string READ-WRITE
instance_name string orclcdb
instance_number integer 0
instance_type string RDBMS
instant_restore boolean FALSE
iorm_limit_policy string RM_PLAN
ipddb_enable boolean FALSE
java_jit_enabled boolean TRUE
java_max_sessionspace_size integer 0
java_pool_size big integer 0
java_restrict string none
java_soft_sessionspace_limit integer 0
job_queue_processes integer 80
json_behavior string
json_expression_check string off
kafka_config_file string
large_pool_size big integer 0
ldap_directory_access string NONE
ldap_directory_sysauth string no
license_max_sessions integer 0
license_max_users integer 0
license_sessions_warning integer 0
listener_networks string
load_without_compile string none
lob_signature_enable boolean FALSE
local_listener string LISTENER_ORCLCDB
lock_name_space string
lock_sga boolean FALSE
lockdown_errors string RAISE
lockfree_reservation string ON
log_archive_config string
log_archive_dest string
log_archive_dest_1 string
log_archive_dest_10 string
log_archive_dest_11 string
log_archive_dest_12 string
log_archive_dest_13 string
log_archive_dest_14 string
log_archive_dest_15 string
log_archive_dest_16 string
log_archive_dest_17 string
log_archive_dest_18 string
log_archive_dest_19 string
log_archive_dest_2 string
log_archive_dest_20 string
log_archive_dest_21 string
log_archive_dest_22 string
log_archive_dest_23 string
log_archive_dest_24 string
log_archive_dest_25 string
log_archive_dest_26 string
log_archive_dest_27 string
log_archive_dest_28 string
log_archive_dest_29 string
log_archive_dest_3 string
log_archive_dest_30 string
log_archive_dest_31 string
log_archive_dest_4 string
log_archive_dest_5 string
log_archive_dest_6 string
log_archive_dest_7 string
log_archive_dest_8 string
log_archive_dest_9 string
log_archive_dest_state_1 string enable
log_archive_dest_state_10 string enable
log_archive_dest_state_11 string enable
log_archive_dest_state_12 string enable
log_archive_dest_state_13 string enable
log_archive_dest_state_14 string enable
log_archive_dest_state_15 string enable
log_archive_dest_state_16 string enable
log_archive_dest_state_17 string enable
log_archive_dest_state_18 string enable
log_archive_dest_state_19 string enable
log_archive_dest_state_2 string enable
log_archive_dest_state_20 string enable
log_archive_dest_state_21 string enable
log_archive_dest_state_22 string enable
log_archive_dest_state_23 string enable
log_archive_dest_state_24 string enable
log_archive_dest_state_25 string enable
log_archive_dest_state_26 string enable
log_archive_dest_state_27 string enable
log_archive_dest_state_28 string enable
log_archive_dest_state_29 string enable
log_archive_dest_state_3 string enable
log_archive_dest_state_30 string enable
log_archive_dest_state_31 string enable
log_archive_dest_state_4 string enable
log_archive_dest_state_5 string enable
log_archive_dest_state_6 string enable
log_archive_dest_state_7 string enable
log_archive_dest_state_8 string enable
log_archive_dest_state_9 string enable
log_archive_duplex_dest string
log_archive_format string %t_%s_%r.dbf
log_archive_max_processes integer 4
log_archive_min_succeed_dest integer 1
log_archive_trace integer 0
log_buffer big integer 8288K
log_checkpoint_interval integer 0
log_checkpoint_timeout integer 1800
log_checkpoints_to_alert boolean FALSE
log_file_name_convert string
long_module_action boolean TRUE
main_workload_type string OLTP
mandatory_user_profile string
max_auth_servers integer 25
max_columns string STANDARD
max_datapump_jobs_per_pdb string AUTO
max_datapump_parallel_per_job string AUTO
max_dispatchers integer
max_dump_file_size string 1G
max_idle_blocker_time integer 0
max_idle_time integer 0
max_iops integer 0
max_mbps integer 0
max_pdbs integer 254
max_saga_duration integer 86400
max_shared_servers integer
max_string_size string STANDARD
memoptimize_pool_size big integer 0
memoptimize_write_area_size big integer 0
memoptimize_writes string HINT
memory_max_size big integer 0
memory_max_target big integer 0
memory_size big integer 0
memory_target big integer 0
mfa_duo_api_host string
mfa_oma_iam_domain_url string
mfa_sender_email_displayname string
mfa_sender_email_id string
mfa_smtp_host string
mfa_smtp_port integer 587
min_auth_servers integer 1
mle_prog_languages string all
multishard_query_data_consistency string strong
multishard_query_partial_results string not allowed
native_blockchain_features string
nls_calendar string GREGORIAN
nls_comp string BINARY
nls_currency string $
nls_date_format string DD-MON-RR
nls_date_language string AMERICAN
nls_dual_currency string $
nls_iso_currency string AMERICA
nls_language string AMERICAN
nls_length_semantics string BYTE
nls_nchar_conv_excp string FALSE
nls_numeric_characters string .,
nls_sort string BINARY
nls_territory string AMERICA
nls_time_format string HH.MI.SSXFF AM
nls_time_tz_format string HH.MI.SSXFF AM TZR
nls_timestamp_format string DD-MON-RR HH.MI.SSXFF AM
nls_timestamp_tz_format string DD-MON-RR HH.MI.SSXFF AM TZR
noncdb_compatible boolean FALSE
object_cache_max_size_percent integer 10
object_cache_optimal_size integer 51200000
ofs_threads integer 4
olap_page_pool_size big integer 0
one_step_plugin_for_pdb_with_tde boolean FALSE
open_cursors integer 300
open_links integer 4
open_links_per_instance integer 4
optimizer_adaptive_plans boolean TRUE
optimizer_adaptive_reporting_only boolean FALSE
optimizer_adaptive_statistics boolean FALSE
optimizer_capture_sql_plan_baselines boolean FALSE
optimizer_capture_sql_quarantine boolean FALSE
optimizer_cross_shard_resiliency boolean FALSE
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 23.1.0
optimizer_ignore_hints boolean FALSE
optimizer_ignore_parallel_hints boolean FALSE
optimizer_index_caching integer 0
optimizer_index_cost_adj integer 100
optimizer_inmemory_aware boolean TRUE
optimizer_mode string ALL_ROWS
optimizer_real_time_statistics boolean FALSE
optimizer_secure_view_merging boolean
optimizer_session_type string NORMAL
optimizer_use_invisible_indexes boolean FALSE
optimizer_use_pending_statistics boolean FALSE
optimizer_use_sql_plan_baselines boolean TRUE
optimizer_use_sql_quarantine boolean TRUE
os_authent_prefix string ops$
os_roles boolean FALSE
outbound_dblink_protocols string ALL
parallel_adaptive_multi_user boolean FALSE
parallel_degree_limit string CPU
parallel_degree_policy string MANUAL
parallel_execution_message_size integer 16384
parallel_force_local boolean FALSE
parallel_instance_group string
parallel_max_servers integer 80
parallel_min_degree string 1
parallel_min_percent integer 0
parallel_min_servers integer 8
parallel_min_time_threshold string AUTO
parallel_servers_target integer 80
parallel_threads_per_cpu integer 1
paranoid_concurrency_mode boolean FALSE
pdb_file_name_convert string
pdb_lockdown string
pdb_os_credential string
pdb_template string
pdc_file_size big integer 4100K
permit_92_wrap_format boolean FALSE
pga_aggregate_limit big integer 2G
pga_aggregate_target big integer 1000M
pkcs11_library_location string
plscope_settings string IDENTIFIERS:NONE
plsql_ccflags string
plsql_code_type string INTERPRETED
plsql_debug boolean FALSE
plsql_function_dynamic_stats string PREFERENCE
plsql_implicit_conversion_bool boolean FALSE
plsql_optimize_level integer 2
plsql_v2_compatibility boolean FALSE
plsql_warnings string DISABLE:ALL
pmem_filestore string
pre_page_sga boolean TRUE
priority_txns_high_wait_target integer 2147483647
priority_txns_medium_wait_target integer 2147483647
priority_txns_mode string ROLLBACK
private_temp_table_prefix string ORA$PTT_
processes integer 320
processor_group_name string
query_rewrite_enabled string TRUE
query_rewrite_integrity string enforced
rdbms_server_dn string
read_only boolean FALSE
read_only_open_delayed boolean FALSE
recovery_parallelism integer 0
recyclebin string on
redo_transport_user string
remote_dependencies_mode string TIMESTAMP
remote_listener string
remote_login_passwordfile string EXCLUSIVE
remote_os_roles boolean FALSE
remote_recovery_file_dest string
replication_dependency_tracking boolean TRUE
resource_limit boolean TRUE
resource_manage_goldengate boolean FALSE
resource_manager_cpu_allocation integer 0
resource_manager_cpu_scope string INSTANCE_ONLY
resource_manager_plan string
result_cache_auto_blocklist string ON
result_cache_execution_threshold integer 2
result_cache_integrity string TRUSTED
result_cache_max_result integer 5
result_cache_max_size big integer 15872K
result_cache_max_temp_result integer 5
result_cache_max_temp_size big integer 155M
result_cache_mode string MANUAL
result_cache_remote_expiration integer 0
resumable_timeout integer 0
rman_restore_file_storage_metadata boolean FALSE
rollback_segments string
run_addm_for_awr_report string NONE
saga_hist_retention integer 43200
saga_msg_framework string classic_queue
scheduler_follow_pdbtz boolean FALSE
sec_max_failed_login_attempts integer 3
sec_protocol_error_further_action string (DROP,3)
sec_protocol_error_trace_action string TRACE
sec_return_server_release_banner boolean FALSE
serial_reuse string disable
service_names string orclcdb.example.com
session_cached_cursors integer 50
session_exit_on_package_state_error boolean FALSE
session_max_open_files integer 10
sessions integer 504
sga_max_size big integer 3008M
sga_min_size big integer 0
sga_target big integer 3008M
shadow_core_dump string partial
shard_apply_max_memory_size big integer 0
shard_enable_raft_follower_read boolean FALSE
shard_queries_restricted_by_key boolean FALSE
shard_raft_logfile_size big integer 1G
shared_memory_address integer 0
shared_pool_reserved_size big integer 43452989
shared_pool_size big integer 0
shared_server_sessions integer
shared_servers integer 1
shrd_dupl_table_refresh_rate integer 60
skip_unusable_indexes boolean TRUE
smtp_out_server string
soda_behavior string
sort_area_retained_size integer 0
sort_area_size integer 65536
spatial_vector_acceleration boolean TRUE
spfile string /u01/app/oracle/product/23.0.0/dbhome_1/dbs/spfileorclcdb.ora
sql92_security boolean TRUE
sql_error_mitigation string on
sql_history_enabled boolean FALSE
sql_trace boolean FALSE
sql_transpiler string OFF
sqltune_category string DEFAULT
ssl_wallet string
standby_db_preserve_states string NONE
standby_file_management string MANUAL
standby_parse_limit_seconds integer 300
standby_pdb_source_file_dblink string
standby_pdb_source_file_directory string
star_transformation_enabled string FALSE
statement_redirect_service string
statistics_level string TYPICAL
streams_pool_size big integer 0
sysdate_at_dbtimezone boolean FALSE
tablespace_encryption string MANUAL_ENABLE
tablespace_encryption_default_algorithm string AES256
tablespace_encryption_default_cipher_mode string XTS
tape_asynch_io boolean TRUE
target_pdbs integer 5
tde_configuration string
tde_key_cache boolean FALSE
temp_undo_enabled boolean FALSE
thread integer 0
threaded_execution boolean FALSE
time_at_dbtimezone string off
timed_os_statistics integer 0
timed_statistics boolean TRUE
timezone_version_upgrade_integrity string enforced
timezone_version_upgrade_online boolean FALSE
trace_enabled boolean TRUE
tracefile_content_classification string DEFAULT
tracefile_identifier string
transaction_recovery string ENABLED
transactions integer 554
transactions_per_rollback_segment integer 5
true_cache boolean FALSE
true_cache_config string
txn_auto_rollback_high_priority_wait_target integer 2147483647
txn_auto_rollback_medium_priority_wait_target integer 2147483647
txn_auto_rollback_mode string ROLLBACK
txn_priority string HIGH
undo_management string AUTO
undo_retention integer 900
undo_tablespace string UNDOTBS1
unified_audit_common_systemlog string
unified_audit_systemlog string
unified_audit_trail_exclude_columns string NONE
uniform_log_timestamp_format boolean TRUE
use_dedicated_broker string NONE
use_large_pages string TRUE
user_dump_dest string /u01/app/oracle/product/23.0.0/dbhome_1/rdbms/log
vector_index_neighbor_graph_reload string RESTART
vector_memory_size big integer 0
vector_query_capture string ON
wallet_root string
workarea_size_policy string AUTO
xml_client_side_decoding string true
xml_db_events string enable
xml_handling_of_invalid_chars string raise_error
xml_params string
SQL>
New Features in 23.26.1
The New Features Guide summarizes the enhancements in 23.26.1 .
- ALTER INDEX Support for JSON Search Index
- Aggregation Filters
- Auto IVF Vector Index Reorganization
- Calendar Functions
- Configuration and Member Tagging for Oracle Data Guard
- DBMS_SECUREFILES Package for SecureFile LOBs
- Database Observability
- Distributed HNSW Indexes with RAC
- Enable Larger ONNX-Format Models
- Included Columns with HNSW Indexes
- JavaScript Web API for In-Database JavaScript
- Kerberos Constrained Delegation for DB Links
- Migrating LOBs Made Easier
- Network Monitor
- Online Index Rebuild
- Partition by Expression
- Post-Quantum Cryptography Support
- Scalar Quantized HNSW Indexes
- Select AI with RAG and Synthetic Data Generation
- Simple Dot-Notation Syntax for JSON Indexes
- Simplifying Data Integrity Using Assertions
- Smart Connection Rebalance Recommendation
- Support for DATEDIFF Function in Oracle
- Support to Create SQL Property Graphs from Database Views
- True Cache Support in OCI Session Pools
- Vector Data Type Support in Precompiler
oracle 26ai parameter list
NAME VALUE DESCRIPTION
-------------------------------------------------- -------------------- ----------------------------------------------------------------------
DBFIPS_140 FALSE Enable use of crypographic libraries in FIPS mode, public
_4030_dump_bitvec 4095 bitvec to specify dumps prior to 4030 error
_4031_dump_bitvec 67194879 bitvec to specify dumps prior to 4031 error
_4031_dump_interval 300 Dump 4031 error once for each n-second interval
_4031_max_dumps 100 Maximum number of 4031 dumps for this process
_4031_sga_dump_interval 3600 Dump 4031 SGA heapdump error once for each n-second interval
_4031_sga_max_dumps 10 Maximum number of SGA heapdumps
_AllowMultInsteadofDDLTrigger 0 Oracle internal parameter to allow multiple instead of DDL triggers
_EnableDDLTtriggerTracing FALSE enable ddl trigger tracing
_EnableShadowTypes FALSE enable shadow types
_ILM_FILTER_TIME 0 Upper filter time for ILM block compression
_ILM_FILTER_TIME_LOWER 0 Lower filter time for ILM block compression
_ILM_POLICY_NAME FALSE User specified ILM policy name
_NUMA_bind_mode default Numa bind mode
_NUMA_float_spawner FALSE float process spawner
_NUMA_instance_mapping Not specified Set of nodes that this instance should run on
_NUMA_pool_reservation_trace FALSE Show NUMA pool reservations at startup
_NUMA_pool_size Not specified aggregate size in bytes of NUMA pool
_PX_use_large_pool FALSE Use Large Pool as source of PX buffers
_REMOVE_INACTIVE_STANDBY_TDE_MASTER_KEY FALSE Remove Inactive Standby TDE Master Key
_REMOVE_STDBY_OLD_KEY_AFTER_CHECKPOINT_SCN TRUE Remove standby old key after checkpoint SCN
_STFForceTranslateOracleSQL FALSE if TRUE translation profile will translate Oracle SQL statements
_STFTranslateDynamicSQL FALSE if TRUE translation profile will translate dynamic SQL statements
_VIEW_DICTIONARY_ACCESSIBILITY FALSE View Dictionary Accessibility Support
__asm_max_connected_clients 3 The high water mark value for connected clients
__bct_last_dba_buffer_size 0 Last running dynamically resized dba buffer size, in bytes
__cnf 100 CNF
__data_transfer_cache_size 0 Actual size of data transfer cache
__datamemory_area_size 1073741824 Actual total size in bytes of inmemory area
__db_16k_cache_xmem_size_metadata 0 Size of extended cache metadata for 16k buffer pool
__db_2k_cache_xmem_size_metadata 0 Size of extended cache metadata for 2k buffer pool
__db_32k_cache_xmem_size_metadata 0 Size of extended cache metadata for 32k buffer pool
__db_4k_cache_xmem_size_metadata 0 Size of extended cache metadata for 4k buffer pool
__db_8k_cache_xmem_size_metadata 0 Size of extended cache metadata for 8k buffer pool
__db_cache_size 5150605312 Actual size of DEFAULT buffer pool for standard block size buffers
__db_cache_xmem_size_metadata 0 Size of extended memory metadata of DEFAULT buffer pool for standard b
__db_keep_cache_xmem_size_metadata 0 Size of extended cache metadata of KEEP buffer pool for standard block
__db_pmem_direct_map_size_metadata 0 Size of PMEM memory metadata of DEFAULT buffer pool for standard block
__db_recycle_cache_xmem_size_metadata 0 Size of extended memory metadata of recycle buffer pool for standard b
__dg_broker_service_names service names for broker use
__inmemory_ext_roarea 0 Actual size in bytes of inmemory ro extension area
__inmemory_ext_rwarea 0 Actual size in bytes of inmemory rw extension area
__inmemory_size 0 unused inmemory size dummy param for compatibility
__java_pool_size 0 Actual size in bytes of java pool
__kstrc_qa_credentials KSTRC credentials for QA mode
__large_pool_size 16777216 Actual size in bytes of large pool
__latch_test_param 0 latch test parameter
__maintenance_is_planned 0 Is maintenance scheduled soon?
__memoptimize_xmem_pool_size_metadata 0 Size of extended cache metadata of MEMOPTIMIZE buffer pool for standar
__oracle_base /u01/app/oracle ORACLE_BASE
__persistent_cl2_slave_size 0 Actual size of slave cluster flash cache for default block size
__pga_aggregate_target 2499805184 Current target size for the aggregate PGA memory consumed
__pre_update_rolling_rrp_compatibility pre update rrp enabled bug list
__previous_rolling_rrp_compatibility previous rrp enabled bug list
__reload_lsnr 0 reload listener
__rolling_list_int_param_spare1 list spare param 1
__rolling_list_int_param_spare2 list spare param 2
__rolling_list_string_param_spare3 default string list spare param 3
__rolling_rrp_boolean_param_spare1 FALSE spare boolean param 1
__rolling_rrp_compatibility rrp enabled bug list
__rolling_rrp_compatibility_homogeneity_check Enabled bugs are same in cluster
__rolling_rrp_disabled list of explicitly disabled rrp
__rolling_rrp_exceptions Exception rrp bug list
__rolling_rrp_int_spare1 0 Int spare param 1
__rolling_rrp_int_spare2 0 Int spare param 2
__rolling_rrp_intent_to_rollback FALSE Record intent to rollback
__rolling_rrp_last_enable_version 23.1.0 VSNNUM where enable_all changed param
__rolling_rrp_previous_last_enable_version previous last_enable param value
__rolling_rrp_simulate_binary_rrp 0 Test param to simulate binary RRP
__rolling_rrp_simulate_binary_rrp_with_cb 0 Test param to simulate binary RRP with callback
__rolling_rrp_simulate_one_off_rrp Test param to simulate rrp one-off list
__rolling_rrp_string_spare1 string spare param 1
__rolling_rrp_string_spare2 string spare param 2
__sess_template_test_attrs FALSE session template: include test attributes
__sga_current_size 0 Current size for PDB SGA
__sga_target 7465861120 Actual size of SGA
__shared_io_pool_size 134217728 Actual size of shared IO pool
__shared_pool_size 1056964608 Actual size in bytes of shared pool
__streams_pool_size 0 Actual size in bytes of streams pool
__unified_pga_pool_size 0 Actual size in bytes of unified pga pool
__wait_test_param 0 wait test parameter
_abort_on_mrp_crash FALSE abort database instance when MRP crashes
_abort_recovery_on_join FALSE if TRUE, abort recovery on join reconfigurations
_ac_enable_dscn_in_rac FALSE Enable Dependent Commit SCN tracking
_ac_strict_SCN_check FALSE enforce strict SCN check for AC replay across DG failover
_accept_versions List of parameters for rolling operation
_aco_disable_options 0 ACO feature disable options
_actgrp_spawn_offload FALSE action group spawn offload
_action_oldpasswd_logon_during_rollover NONE Action on logon using old password during gradual password rollover
_active_dgpdb TRUE active PDB dataguard
_active_dgpdb_qscn_count 100 active PDB dataguard query SCN service max count
_active_instance_count 1024 number of active instances in the cluster database
_active_session_idle_limit 5 active session idle limit
_active_session_legacy_behavior FALSE active session legacy behavior
_active_standby_fast_reconfiguration TRUE if TRUE optimize dlm reconfiguration for active/standby OPS
_adaptive_direct_read TRUE Adaptive Direct Read
_adaptive_direct_write TRUE Adaptive Direct Write
_adaptive_fetch_enabled TRUE enable/disable adaptive fetch in parallel group by
_adaptive_log_file_sync_high_switch_freq_threshold 3 Threshold for frequent log file sync mode switches (per minute)
_adaptive_log_file_sync_poll_aggressiveness 0 Polling interval selection bias (conservative=0, aggressive=100)
_adaptive_log_file_sync_sampling_count 128 Evaluate post/wait versus polling every N writes
_adaptive_log_file_sync_sampling_time 3 Evaluate post/wait versus polling every N seconds
_adaptive_log_file_sync_sched_delay_window 60 Window (in seconds) for measuring average scheduling delay
_adaptive_log_file_sync_use_polling_threshold 200 Ratio of redo synch time to expected poll time as a percentage
_adaptive_log_file_sync_use_postwait_threshold 50 Percentage of foreground load from when post/wait was last used
_adaptive_log_file_sync_use_postwait_threshold_agi 1001 Permille of foreground load from when post/wait was last used
ng
_adaptive_scalable_log_writer_disable_worker_thres 50 Percentage of overlap across multiple outstanding writes
hold
_adaptive_scalable_log_writer_enable_worker_aging 999900 Per million of redo gen rate when LGWR workers were last used
_adaptive_scalable_log_writer_enable_worker_thresh 200 Increase in redo generation rate as a percentage
old
_adaptive_scalable_log_writer_evaluation_fraction 100 Serial/parallel log writer evaluation fraction (in 10000ths)
_adaptive_scalable_log_writer_evaluation_interval 15 Serial/parallel log writer evaluation interval (in seconds)
_adaptive_scalable_log_writer_sampling_count 128 Evaluate single versus scalable LGWR every N writes
_adaptive_scalable_log_writer_sampling_time 3 Evaluate single versus scalable LGWR every N seconds
_adaptive_window_consolidator_enabled TRUE enable/disable adaptive window consolidator PX plan
_add_backup_diag_metablock 4 control creation of diag metablock
_add_col_optim_enabled TRUE Allows new add column optimization
_add_nullable_column_with_default_optim TRUE Allows add of a nullable column with default optimization
_add_stale_mv_to_dependency_list TRUE add stale mv to dependency list
_add_trim_for_nlssort TRUE add trimming for fixed char semantics
_addm_auto_actions_enabled TRUE determines if ADDM can automatically implement its recommendations
_addm_auto_enable TRUE governs whether ADDM gets run automatically after every AWR snapshot
_addm_skiprules comma-separated list of ADDM nodes to skip
_addm_version_check TRUE governs whether ADDM checks the input AWR snapshot version
_adg_adt_redirect_apply_lag_threshold 12000 Maximum centi-seconds of apply lag threshold
_adg_adt_redirect_catchup_wait_time 12000 Maximum centi-seconds for standby to catch up
_adg_auto_close_pdb TRUE ADG recovery auto close PDB upon PDB drop/unplug/rename marker
_adg_count_beyond_limit 0 Count the total number of objects if beyond redo marker length.
_adg_defer_segstat TRUE Defer the segment statistics update on standby.
_adg_distributed_lockmaster FALSE standby runs under ADG distributed lockmaster mode
_adg_influx_qscn_gap 0 maximum time gap between influx scn and qscn update in seconds
_adg_instance_recovery TRUE enable ADG instance recovery
_adg_objectlock_attempts 2 Maximum attempts for objectlock get on ADG
_adg_objectlock_maxnum 1000 The maximum limit of the objectlock number on ADG
_adg_objectlock_timeout 0 timeout for objectlock get on ADG in centiseconds
_adg_parselock_holder_throttle_timeout 10 number of seconds ADG parse lock holders timeout on long waits
_adg_parselock_timeout 0 timeout for parselock get on ADG in centiseconds
_adg_parselock_timeout_sleep 100 sleep duration after a parselock timeout on ADG in milliseconds
_adg_redirect_upd_to_primary_max_retries 500 max retries for ADT redirect to Primary from ADG
_adjust_literal_replacement FALSE If TRUE, we will adjust the SQL/PLUS output
_adr_migrate_runonce TRUE Enable/disable ADR Migrate Runonce action
_advanced_index_compression_cmp_options 0 advanced index compression cmp options
_advanced_index_compression_opt_options 0 advanced index compression opt options
_advanced_index_compression_options 0 advanced index compression options
_advanced_index_compression_options_value 0 advanced index compression options2
_advanced_index_compression_recmp_crsz 10 advanced index compression limit recomp cr
_advanced_index_compression_recmp_cusz 90 advanced index compression limit recomp cu
_advanced_index_compression_recmp_nprg 10 advanced index compression limit recomp pu
_advanced_index_compression_trace 0 advanced index compression trace
_advanced_index_compression_tst_options 0 advanced index compression tst options
_advanced_index_compression_umem_options 2147483647 advanced index compression umem options
_afd_disable_fence FALSE Disable AFD fencing
_affected_row_threshold_for_dst_upgrade_using_dml 100 affected row threshold for DST upgrade using DML
_affinity_on TRUE enable/disable affinity at run time
_age_block_batch_timeout_ms 1000 timeout before shipping out the batched age blockmessages in milliseco
_aged_out_cursor_cache_time 300 number of seconds an aged out session cached cursor stay in cache
_aggregation_optimization_settings 0 settings for aggregation optimizations
_ahub_data_file_loc AHub Data File Location
_aiowait_timeouts 100 Number of aiowait timeouts before error is reported
_alert_expiration 604800 seconds before an alert message is moved to exception queue
_alert_message_cleanup 1 Enable Alert Message Cleanup
_alert_message_purge 1 Enable Alert Message Purge
_alert_post_background 1 Enable Background Alert Posting
_alert_segment_size 50 Alert-log segment size in MBs (1024*1024)
_alert_segment_textfile TRUE Alert-log text-file also to be segmented
_alert_segments_max 20 Alert-log max segments to retain, 0 for unlimited
_all_shared_dblinks treat all dblinks as shared
_all_sync_restrict_list List of applications to ignore in all sync
_alloc_perm_as_free FALSE allocate permanent chunks as freeable
_allocate_creation_order FALSE should files be examined in creation order during allocation
_allocate_flashback_buffer FALSE Allocate flashback buffer at mount time even if flashback is off
_allocation_update_interval 3 interval at which successful search in L1 should be updated
_allow_abs_path_dir TRUE Allow absolute path for CREATE DIRECTORY
_allow_alertlog_write TRUE Allow writing to alert/debug log inside the PDB
_allow_cell_smart_scan_attr TRUE Allow checking smart_scan_capable Attr
_allow_cg_via_connect_string TRUE Allow consumer group to be specified via connect string
_allow_common_user_dblink TRUE Allow common user for fixed user database link inside the PDB
_allow_commutativity TRUE allow for commutativity of +, * when comparing expressions
_allow_compatibility_adv_w_grp FALSE allow advancing DB compatibility with guaranteed restore points
_allow_connected_user_dblink TRUE Allow connected user database link usage inside the PDB
_allow_convert_to_standby FALSE allow convert to standby to go through
_allow_cross_endian_dictionary FALSE Allow cross-endian data dictionary
_allow_cross_version_ddl 0 allow cross version DDL execution
_allow_ddl_in_fga_handler FALSE Allow DDLs inside FGA handler(for QA use only)
_allow_drop_snapshot_standby_grsp FALSE Allow dropping snapshot standby guaranteed restore point
_allow_drop_ts_with_grp FALSE Allow drop Tablespace with guaranteed restore points
_allow_error_simulation FALSE Allow error simulation for testing
_allow_fallback_to_dbkey FALSE if TRUE, allow fallback to dbkey
_allow_fga_mixed_mode FALSE write FGA records to fga_log$
_allow_file_1_offline_error_1245 FALSE don't signal ORA-1245 due to file 1 being offline
_allow_imc_adaptive_grow TRUE if TRUE, allow imc to grow adaptively in broker's auto tuning.
_allow_imc_adaptive_shrink TRUE if TRUE, allow imc to shrink adaptively in broker's auto tuning.
_allow_insert_with_update_check FALSE Allow INSERT as statement_types when update_check is FALSE
_allow_level_without_connect_by FALSE allow level without connect by
_allow_modify_lockdown FALSE Allow restricted operations like set lockdown inside the PDB
_allow_operator_access FALSE Allow cloud operator to access local user objects
_allow_privileged_session_dblink_conn FALSE Allow privileged session for dblink connection
_allow_read_only_corruption FALSE allow read-only open even if database is corrupt
_allow_resetlogs_corruption FALSE allow resetlogs even if it will cause corruption
_allow_same_cdb_refresh_switchover TRUE allow refresh switchover in one cdb
_allow_self_signed_cert FALSE Allow Self Signed Certificate for Outbound Communication
_allow_snr_cr FALSE allow cross-region SNR sharding deployment
_allow_snr_rac FALSE allow SNR sharding deployment with RAC databases
_allow_synonym_for_credential TRUE Allow public/private synonym for scheduler credential
_allow_sysosenv_context FALSE Allow OS Environment Variable Application Context
_allow_system_wallet TRUE Allow Usage of SYSTEM Wallet Path for Outbound Communication
_allow_terminal_recovery_corruption FALSE Finish terminal recovery even if it may cause corruption
_allow_traditional_audit_configuration FALSE allow traditional audit configuration
_allow_triggers_on_vpd_table FALSE Allow triggers on VPD protected table in DML
_allow_unenc_ts_without_tde_master_key FALSE if TRUE, allow unencrypted tablespace creation even when master key is
_allow_user$_col_update NONE List of user$ columns which are allowed to be updated
_allow_xdb_anonymous_logon FALSE Allow XDB anonymous logon
_allowed_pvf_owners List of schemas allowed to own password verification function
_alter_adg_redirect_behavior none Alter ADG's Redirection behavior
_alter_table_modify_column_nop_flags 1 Alter table modify column NOP flags
_alter_upgrade_signature_only FALSE alter table upgrade only sets signature
_alter_user_no_x_lock FALSE Refrain from taking X-lock for ALTER USER
_alternate_iot_leaf_block_split_points TRUE enable alternate index-organized table leaf-block split-points
_alternate_verifier Use alternate user's verifier.
_always_anti_join CHOOSE always use this method for anti-join when possible
_always_semi_join CHOOSE always use this method for semi-join when possible
_always_star_transformation FALSE always favor use of star transformation
_always_vector_transformation FALSE always favor use of vector transformation
_analyze_comprehensive FALSE Analyze comprehensive mode
_and_pruning_enabled TRUE allow partition pruning based on multiple mechanisms
_ansi_join_mv_rewrite_enabled TRUE enable/disable ansi join mv rewrite
_app_container_debug 0 Enable Debug tracing in Application container
_app_default_containers FALSE containers_default and container_map enabled by default on MDL applica
_app_ignore_errors TRUE ignore errors during containers() on application object
_app_replay_silent_errors FALSE silently ignore all errors during application sync
_appcont_error_convert ON Control if error should be converted
_application_purge_enabled TRUE Is an application purge allowed
_application_script FALSE Running an application script
_apppdb_multi_slave_sync FALSE Multiple slaves used during Application sync
_appqos_cdb_setting 0 QoSM CDB Performance Class Setting
_appqos_po_multiplier 1000 Multiplier for PC performance objective value
_appqos_qt 10 System Queue time retrieval interval
_approx_cnt_distinct_gby_pushdown choose perform group-by pushdown for approximate distinct count query
_approx_cnt_distinct_optimization 0 settings for approx_count_distinct optimizations
_approx_perc_sampling_err_rate 2 error rate percentage of approximate percentile using sampling
_approx_percentile_optimization 0 settings for approx_percentile optimization
_aps_flush_enabled FALSE Enable/Disable APS Flushing functionality
_apx_root_directory APX APX default root directory
_aq_Txn_ht_sz 1024 Message cache Txn Hash table size
_aq_addpt_batch_size 1 Add PT batch Size
_aq_bufop_svc_create 1 create queue service for buffered operations
_aq_ddl_lck_timeout 90 AQ DDL lock timeout
_aq_deq_flowcontrol 0 Deq flow control
_aq_dly_bkt 60 Delay Bucket Size
_aq_dq_prefetch_Siz 5 AQ PT DQ prefech Size
_aq_dqblocks_in_cache 0 deq blocks in cache
_aq_droppt_batch_size 5 Drop PT batch Size
_aq_free_list_pools 10 state object and transaction memory pools
_aq_init_shards 5 Minimum enqueue shards per queue at an instance
_aq_ipc_max_slave 10 maximum number of slaves for knlpipcm
_aq_latency_absolute_threshold 300 Absolute threshold greater than average latency
_aq_latency_relative_threshold 100 Relative threshold of average latency
_aq_lb_cycle 120 Time(seconds) between consecutive AQ load balancing efforts
_aq_lb_garbage_col_interval 600 AQ LB garbage collect interval
_aq_lb_stats_collect_cycle 45 Time(seconds) between consecutive AQ load statistics collection
_aq_lb_subht_bkt_ltch 32 AQ LB subscriber ht bucket latches
_aq_lb_subht_elm_ltch 128 AQ LB subscriber ht element latches
_aq_lookback_size 60 AQ PT Look Back Size
_aq_max_pdb_close_msg 1 Max Number of AQ Recovery Messages when pdb is closed
_aq_max_scan_delay 1500 Maximum allowable scan delay for AQ indexes and IOTs
_aq_opt_background_enabled TRUE AQ: OPT Operations Background enabled
_aq_opt_enabled TRUE AQ: OPT Operations enabled
_aq_opt_fudge_factor 500 AQ: OPT Fudge Factor for pre-fretching
_aq_opt_list_oper_latches 8 OPT subshard operation latches
_aq_opt_min_evict_memory 0 AQ: OPT LWM memory for eviction to stop
_aq_opt_preevict_dop 3 AQ: OPT Background: PreEvict Degree Of Parallelism
_aq_opt_prefetch_dop 3 AQ: OPT Background: Prefetch Degree Of Parallelism
_aq_opt_prefetch_horizon 60 AQ: OPT horizon for pre-fretching
_aq_opt_stat_window 21600 AQ: OPT Subscriber Statistics Window Size
_aq_opt_stop_stat FALSE AQ: OPT Stop Collection of Subscriber Statistics
_aq_pt_processes 10 Partition background processes
_aq_pt_shrink_frequency 60 PT shrink window Size
_aq_pt_statistics_window 60 PT statistics sample window Size
_aq_qt_prefetch_Size 5 AQ PT QT prefech Size
_aq_queue_global_service AQ queue global service
_aq_retry_timeouts 0 retry timeouts
_aq_scramble_deq 0 Scrambled Deq
_aq_scrambled_deqlog 1 scrambled deqlog
_aq_shard_bitmap_child_latches 32 Bitmap child latches
_aq_shard_child_latches 512 Shard child latches
_aq_shard_prty_latches 16 Shard priority child latches
_aq_shard_retry_child_latches 32 Retry child latches
_aq_shard_sub_child_Elem_latches 1024 Subscriber Element child latches
_aq_shard_sub_child_latches 512 Subscriber child latches
_aq_shard_txn_child_latches 128 Txn child latches
_aq_stop_backgrounds FALSE Stop all AQ background processes
_aq_streaming_threshold 10485760 large payload threshold size
_aq_subshard_Size 20000 Sub Shard Size
_aq_subshards_per_dqpartition 1 SubShards Per Deq Partition
_aq_subshards_per_qpartition 1 SubShards Per Q Partition
_aq_tm_deqcountinterval 0 dequeue count interval for Time Managers to cleanup DEQ IOT BLOCKS
_aq_tm_processes_dump_interval 12 Time(minutes) between consecutive Dumps in alert log
_aq_tm_scanlimit 0 scan limit for Time Managers to clean up IOT
_aq_tm_statistics_duration 0 statistics collection window duration
_aq_truncpt_batch_size 1 Trunc PT batch Size
_aq_uncached_stats 0 Uncached Stats
_aq_x_mode 1 AQ - cross mode
_aq_x_msg_size 32768 AQ cross single message buffer size
_aqsharded_cache_limit 0 Limit for cached enqueue/dequeue operations
_aqsharded_cache_policy_lowmem 0 AQ: caching policy in low memory
_aqsharded_cached_hint 0 sharded queue cached hint
_aqsharded_enq_fresh_ptn_reload TRUE start enqueueing to a fresh partition on reload
_aqsharded_lowmem_timeout 1000 sharded queue low mem timeout (in centiseconds)
_aqsharded_reload_tune 2 sharded queue tune reload behaviour
_arch_comp_dbg_scan 0 archive compression scan debug
_arch_comp_dec_block_check_dump 1 decompress archive compression blocks for checking and dumping
_arch_compress_checksums FALSE enable/disable row checksums for archive compressed blocks
_arch_compression TRUE archive compression enabled
_arch_io_slaves 0 ARCH I/O slaves
_array_cdb_view_enabled TRUE array mode enabled for CDB views
_array_update_vector_read_enabled FALSE Enable array update vector read
_ash_disk_filter_ratio 10 Ratio of the number of in-memory samples to the number of samples actu
_ash_disk_write_enable TRUE To enable or disable Active Session History flushing
_ash_dummy_test_param 0 Oracle internal dummy ASH parameter used ONLY for testing!
_ash_eflush_trigger 66 The percentage above which if the in-memory ASH is full the emergency
_ash_enable TRUE To enable or disable Active Session sampling and flushing
_ash_min_mmnl_dump 90 Minimum Time interval passed to consider MMNL Dump
_ash_progressive_flush_interval 300 ASH Progressive Flush interval in secs
_ash_sample_all FALSE To enable or disable sampling every connected session including ones w
_ash_sampling_interval 1000 Time interval between two successive Active Session samples in millise
_ash_size 1048618 To set the size of the in-memory Active Session History buffers
_asm_access auto ASM File access mechanism
_asm_access_assume_local FALSE Assume IOS client is in the same cluster as IOS
_asm_acd_chunks 1 initial ACD chunks created
_asm_admin_with_sysdba FALSE Does the sysdba role have administrative privileges on ASM?
_asm_allocation_secondary_tolerance 1 Per-partner secondary tolerance for allocation
_asm_allow_appliance_dropdisk_noforce FALSE Allow DROP DISK/FAILUREGROUP NOFORCE on ASM Appliances
_asm_allow_appliance_offlineonline FALSE Allow OFFLINE/ONLINE DISK/FAILUREGROUP on ASM Appliances
_asm_allow_dangerous_unprotected_volumes FALSE Disable checking for unprotected volumes in mirrored disk groups
_asm_allow_dgname_special_chars FALSE Enable the use of special characters in diskgroup names
_asm_allow_foreign_siteguids Disable checking for foreign siteguid on a given node
_asm_allow_lvm_resilvering TRUE Enable disk resilvering for external redundancy
_asm_allow_older_clients FALSE Allow older clients to connect to the ASM server
_asm_allow_only_raw_disks TRUE Discovery only raw devices
_asm_allow_prepare_split TRUE Allow database prepare and split in non-appliance mode
_asm_allow_small_memory_target FALSE Allow a small memory_target for ASM instances
_asm_allow_system_alias_rename FALSE if system alias renaming is allowed
_asm_allow_unsafe_reconnect TRUE attempt unsafe reconnect to ASM
_asm_allowdegeneratemounts FALSE Allow force-mounts of DGs w/o proper quorum
_asm_appliance_config_file Appliance configuration file name
_asm_appliance_disable_fg_check FALSE Disable failure group check
_asm_appliance_ignore_oak FALSE Ignore OAK appliance library
_asm_appliance_slot_from_path FALSE Get appliance disk slot from disk path
_asm_asmb_exa_rcvto 30 Receive timeout for ASMB in exadata env in seconds
_asm_asmb_max_wait_timeout 6 timeout before processes are signaled with network interrupt
_asm_asmb_rcvto 10 Receive timeout for ASMB in seconds
_asm_async_scrub_reap_wait 100000 Async scrubbing reaping IO wait in microseconds
_asm_ate_conversion_batch_size 1024 ATE conversion batch size
_asm_audit_sp_param ASM audit spare parameter
_asm_ausize 1048576 allocation unit size
_asm_auto_online_interval auto online interval
_asm_automatic_rezone TRUE automatically rebalance free space across zones
_asm_avoid_pst_scans TRUE Avoid PST Scans
_asm_bdbmr_max_ent_inprgrs 2000 Limit of BADFDA7A entries in progress of recovery
_asm_blksize 4096 metadata block size
_asm_br_listener_port 51521 Bitrotter listener port for testing purpose
_asm_brfuzz_ios_lsnrport 0 IOS listener port for fuzzing with Bitrotter
_asm_buffer_overlap_tracer FALSE Enables kfioBufOverlapTracer
_asm_cancel_alert_time 600 Wait time for I/O cancel alert message (in seconds)
_asm_cancel_delta 75000 Delta timeout for blocking big writes in milliseconds
_asm_cclient_cleanup_timeout 300 timeout before cleaning up remote cluster clients
_asm_check_for_misbehaving_cf_clients FALSE check for misbehaving CF-holding clients
_asm_checksum_migration_chunk_size 128 Number of asm metadata blocks for checksum migration in one batch
_asm_compatibility 23.1 default ASM compatibility level
_asm_dba_batch 500000 ASM Disk Based Allocation Max Batch Size
_asm_dba_spcchk_thld 100000 ASM Disk Based Allocation Space Check Threshold
_asm_dba_threshold 0 ASM Disk Based Allocation Threshold
_asm_dbmsdg_nohdrchk FALSE dbms_diskgroup.checkfile does not check block headers
_asm_dependency_under_cfenqueue TRUE Send dependency request if holding CF enqueue
_asm_diag_dead_clients FALSE diagnostics for dead clients
_asm_direct_con_expire_time 120 Expire time for idle direct connection to ASM instance
_asm_disable_amdu_dump FALSE Disable AMDU dump
_asm_disable_async_msgs FALSE disable async intra-instance messaging
_asm_disable_dangerous_failgroup_checking FALSE Disable checking for dubious failgroup configurations
_asm_disable_exadata_hard_appliance_check FALSE Disable Hard Appliance Mode Check during Diskgroup Creation
_asm_disable_failgroup_count_checking FALSE Disable checking for failure group count
_asm_disable_failgroup_size_checking FALSE Disable checking for failure group size
_asm_disable_multiple_instance_check FALSE Disable checking for multiple ASM instances on a given node
_asm_disable_patch_compat FALSE disable DG patch compatibility checks
_asm_disable_proact_client_cleanup FALSE disable proactive client cleanup
_asm_disable_profilediscovery FALSE disable profile query for discovery
_asm_disable_pstcard FALSE Disable pst cardinality layout checks
_asm_disable_request_tracer TRUE Disable kfioRqTracer
_asm_disable_smr_creation FALSE Do Not create smr
_asm_disable_ufg_dump FALSE disable terminated umbilicus diagnostic
_asm_disable_ufgmemberkill FALSE disable ufg member kill
_asm_disable_vtoc_check FALSE Disable vtoc/sector 0 check
_asm_disable_vxn_map_messages FALSE disable using vxn map messages
_asm_disk_repair_time 14400 seconds to wait before dropping a failing disk
_asm_diskerr_traces 2 Number of read/write errors per disk a process can trace
_asm_diskgroup_renew_timeout 20 timeout FENC will give former ASMB group owner to renew
_asm_diskgroups2 disk groups to mount automatically set 2
_asm_diskgroups3 disk groups to mount automatically set 3
_asm_diskgroups4 disk groups to mount automatically set 4
_asm_dump_split_pw 10 Seconds to wait before requesting dump of split pending writes
_asm_dynamic_timeout_interval 20 Dynamic timeout update intervals of 3 seconds
_asm_emulate_nfs_disk FALSE Emulate NFS disk test event
_asm_emulmax 10000 max number of concurrent disks to emulate I /O errors
_asm_emultimeout 0 timeout before emulation begins (in 3s ticks)
_asm_enable_batch_scrub TRUE Allow scrubbing verification to run in batch mode
_asm_enable_kfios FALSE Enable KFIOS module
_asm_enable_kfks FALSE Enable KFKS module
_asm_enable_lostwrite_scrub TRUE Allow lost write detection in scrubbing
_asm_enable_map_share TRUE Enable ASM extent map share
_asm_enable_multiple_asmb TRUE Allow the ASM client to have multiple ASMB background processes
_asm_enable_parity_scrub FALSE Allow scrubbing parity files
_asm_enable_parityfile_creation TRUE Enable parity files creation
_asm_enable_proxy_read_stats FALSE Enable ASM Proxy Read Stats
_asm_enable_proxy_read_validation FALSE Enable ASM Proxy Read Validation
_asm_enable_proxy_reads TRUE Enable ASM Proxy Reads
_asm_enable_pstreloc_on_rm FALSE Enable pst layout relocation on rolling migration
_asm_enable_repair_lostwrite_scrub FALSE Allow repairing lost write in scrubbing
_asm_enable_vfreloc_on_rm FALSE Enable voting file relocation on rolling migration
_asm_enable_xrov FALSE Enable XROV capability
_asm_evenread 2 ASM Even Read level
_asm_evenread_alpha 0 ASM Even Read Alpha
_asm_evenread_alpha2 0 ASM Even Read Second Alpha
_asm_evenread_faststart 0 ASM Even Read Fast Start Threshold
_asm_fail_random_rx FALSE Randomly fail some RX enqueue gets
_asm_fd_cln_idle_sess_twait 60000000 Idle session time wait to run ASM FD cleanup
_asm_fd_cln_on_fg TRUE ASM stale FD cleanup on foregrounds
_asm_fob_tac_frequency 9 Timeout frequency for FOB cleanup
_asm_force_parity_extent_check FALSE Force parity extent integrity check
_asm_force_paritycheck_rebalance FALSE Force parity extent integrity check during rebalance
_asm_force_proxy_reads FALSE Force ASM Proxy Reads
_asm_force_quiesce FALSE Force diskgroup quiescing
_asm_force_vam FALSE force VAM for external redundancy
_asm_formatpstau TRUE Format PST AU before use during relocation
_asm_frag_threshold 50 Percentage threshold before disk/diskgroup is deemed fragmented
_asm_global_dump_level 267 System state dump level for ASM asserts
_asm_hard_check TRUE H.A.R.D. check buffer before write operation
_asm_hbeatiowait 120 number of secs to wait for PST Async Hbeat IO return
_asm_hbeatwaitquantum 2 quantum used to compute time-to-wait for a PST Hbeat check
_asm_healthcheck_timeout 180 seconds until health check takes action
_asm_identify_advisory_locks 2 enables ASM file identify advisory locks
_asm_idn_processes 0 number of global open processes
_asm_imbalance_tolerance 3 hundredths of a percentage of inter-disk imbalance to tolerate
_asm_instlock_quota 0 ASM Instance Lock Quota
_asm_ios_network_domains 0 number of domains in ASM IOSERVER instance
_asm_ios_network_processes 0 number network processes per domain in ASM IOSERVER instance
_asm_iosconnect_timeout 0 Time (in 3secs multiples) before db gives up on connecting to IOS
_asm_iosfailover_freq 3 Frequency limit after which db gives up on failing over to IOS
_asm_iosfailover_timeout 5 Time window within which db tries to failover to IOS
_asm_iostat_latch_count 31 ASM I/O statistics latch count
_asm_iowp_max_async 0 maximum async IOs per IO worker process
_asm_kfdpevent 0 KFDP event
_asm_kill_unresponsive_clients TRUE kill unresponsive ASM clients
_asm_libraries ufs library search order for discovery
_asm_log_scale_rebalance FALSE Rebalance power uses logarithmic scale
_asm_lsod_bucket_size 67 ASM lsod bucket size
_asm_max_aux_cods 5 maximum number of auxiliary cods in sparse disk groups
_asm_max_clients 1000 maximum number of clients this IOS instance can service
_asm_max_cod_strides 10 maximum number of COD strides
_asm_max_connected_clients 3 The high water mark value for connected clients
_asm_max_kfsg_free_heap_perc 10 Max percentage of SGA memory reserved for kfsga free heap
_asm_max_kfsg_free_heap_size 524288000 Max buffer size reserved for kfsga free heap
_asm_max_occupied 90 Maximum percentage of disk occupied to check for fragmentation
_asm_max_parallelios 256 Maximum simultaneous outstanding IOs
_asm_max_redo_buffer_size 2097152 asm maximum redo buffer size
_asm_maxio 1048576 Maximum size of individual I/O request
_asm_min_compatibility 19.0 default mininum ASM compatibility level
_asm_min_occupied 75 Minimum percentage of disk occupied to check for fragmentation
_asm_netp_factor 0 number of network processes per net
_asm_netp_iosize 0 maximum io size
_asm_network_timeout 1 Keepalive timeout for ASM network connections
_asm_networks ASM network subnet addresses
_asm_no_shared_maplock FALSE No Shared MapLocks
_asm_node_number ASM node number
_asm_node_site_guid ASM site GUID of node
_asm_nodekill_escalate_time 180 secs until escalating to nodekill if fence incomplete
_asm_noevenread_diskgroups List of disk groups having even read disabled
_asm_oda_type ODA Type
_asm_odapremchk TRUE Check premature storage for ODA
_asm_offline_wait_timeout 300 Timeout for offline wait
_asm_offload_all FALSE Offload all write operations to Exadata cells, when supported
_asm_ownerid_trace_timeout 3600 ownerid tracing threshold in seconds
_asm_partner_target_disk_part 8 target maximum number of disk partners for repartnering
_asm_partner_target_fg_rel 4 target maximum number of failure group relationships for repartnering
_asm_preopen_mincnt 100 Minimum number of files to trigger preopen in DBW
_asm_preopen_workers 4 Number of workers for DBW preopen
_asm_primary_load 1 Number of cycles/extents to load for non-mirrored files
_asm_primary_load_cycles TRUE True if primary load is in cycles, false if extent counts
_asm_procs_trace_diskerr 5 Number of processes allowed to trace a disk failure
_asm_proxy_online_restart 0 Allow patching while ADVM volumes are online
_asm_proxy_startwait 60 Maximum time to wait for ASM proxy connection
_asm_pst_rsinfo 0 file redundancies to consider during PST liveness checks
_asm_pstonpartners TRUE Select ideal PST disks following partnership
_asm_quorum_hb TRUE Allow Quorum Disk Heartbeat
_asm_random_zone FALSE Random zones for new files
_asm_read_cancel DYNAMIC Read cancel timeout in milliseconds
_asm_read_cancel_back_out 5000 Time period in milliseconds when no reads are issued to a disk after a
_asm_read_cancel_dynamic_delta 20 Dynamic read timeout delta to multiply with median wait time
_asm_read_cancel_timeout_limit 15000 Timeout limit for dynamic read timeout update
_asm_read_cancel_timeout_min 5000 Minimum wait time for dynamic read timeout
_asm_rebalance_estimates_process TRUE Perform rebalance estimates in ARB-A process
_asm_rebalance_plan_size 120 maximum rebalance work unit
_asm_rebalance_rate_alpha 0 ASM Rebalance Rate Alpha
_asm_rebalance_rate_alpha2 0 ASM Rebalance Rate Fast Start Alpha
_asm_rebalance_rate_faststart 10 ASM Rebalance Rate Fast Start Intervals
_asm_rebalance_rate_interval 9000 Interval in millisec when to update rebalance rate
_asm_rebalance_secondary_tolerance 1 Per-partner secondary tolerance for rebalance
_asm_rebalance_space_errors 1000 number of out of space errors allowed before aborting rebalance
_asm_reloc_cic FALSE Allow relocation during rolling migration
_asm_reloc_restart_timeout 600 csecs before signaling ORA-15424 when waiting for orphans
_asm_relocation_async_lock_count 128 limit of asynchronous map locks during relocation
_asm_relocation_ignore_hard_failure 0 ignore HARD for relocation
_asm_relocation_scheme alloc_p2 alloc_s3 re ASM allocation / relocation scheme
b_p2 reb_s1 bal_p2 b
al_s3 prep_p2 prep_s
3
_asm_relocation_trace FALSE enable extent relocation tracing
_asm_remote_client_timeout 300 timeout before killing disconnected remote clients
_asm_repairquantum 60 quantum (in 3s) used to compute elapsed time for disk drop
_asm_reserve_slaves TRUE reserve ASM slaves for CF txns
_asm_resyncCkpt 6000 time in centiseconds to resync before flushing checkpoint
_asm_root_directory ASM ASM default root directory
_asm_runtime_capability_volume_support FALSE runtime capability for volume support returns supported
_asm_scrub_async TRUE Enable asynchronous scrubbing
_asm_scrub_disable_cod FALSE Disable scrubbing COD
_asm_scrub_limit AUTO ASM disk scrubbing power
_asm_scrub_max_cod_wait 5 Number of minutes to delay scrub COD recovery
_asm_scrub_strict FALSE Enable strict scrubbing mode
_asm_scrub_unmatched_dba 1024 Scrub maximum number of blocks with unmatched DBA
_asm_secondary_load 10000 Number of cycles/extents to load for mirrored files
_asm_secondary_load_cycles FALSE True if secondary load is in cycles, false if extent counts
_asm_serialize_volume_rebalance FALSE Serialize volume rebalance
_asm_shadow_cycle 3 Inverse shadow cycle requirement
_asm_shared_pool_latch_timeout 30 seconds before terminating inst if ASMB is waiting for shared pool lat
_asm_showpdb_asmtbl FALSE Allow asm table values to be shown in pdb
_asm_skip_cod_recovery_diskgroups ASM disk groups for which COD recovery is disabled
_asm_skip_dbfile_ios FALSE Skip I/Os to database files (do only ASM metadata I/O)
_asm_skip_diskval_check FALSE skip client side discovery for disk revalidate
_asm_skip_rename_check FALSE skip the checking of the clients for s/w compatibility for rename
_asm_skip_resize_check FALSE skip the checking of the clients for s/w compatibility for resize
_asm_slow_client_timeout_percentage 50 Percentage of the write cancel timeout to detect slow client.
_asm_ssd_max_timeout_limit 2400 Maximum timeout limit in secs for sysdump during ufg hang
_asm_storagemaysplit FALSE PST Split Possible
_asm_stripesize 131072 ASM file stripe size
_asm_stripewidth 8 ASM file stripe width
_asm_sync_rebalance FALSE Rebalance uses sync I/O
_asm_tcp_user_timeout 1 TCP_USER_TIMEOUT in minutes
_asm_trace_limit_timeout 30000 Time-out in milliseconds to reset the number of traces per disk and th
_asm_ufg_nw_wait_timeout 10 seconds to start health check on unresponsive clients
_asm_usd_batch 64 ASM USD Update Max Batch Size
_asm_wait_time 18 Max/imum time to wait before asmb exits
_asm_write_badfdata_in_contentcheck FALSE Write BADFDA7A in content check
_asm_write_cancel AUTO Write timeout in milliseconds
_asm_write_cancel_dynamic_delta 30 Dynamic write timeout delta to multiply with median wait time
_asm_write_cancel_timeout_limit 90000 Timeout limit for dynamic write timeout update
_asm_write_cancel_timeout_min 15000 Minimum wait time for dynamic write timeout
_asm_write_cancel_timeout_percentage 30 Percentage of the write timeout to wait before optional offline
_asm_xrov_cachelgio 1 ADVM cache large IO
_asm_xrov_nstats 0 Specify number of IOs before stats
_asm_xrov_nvios 24 Specify number of VIO processes
_asm_xrov_rsnmod 2 Specify 'reason' mode
_asm_xrov_single FALSE Enable single issues of IOs
_asm_zero_power_limit allow setting zero power limit
_asmsid asm ASM instance id
_assert_encrypted_tablespace_blocks TRUE if TRUE, assert encrypted tablespace blocks must be encrypted
_assert_invalidation 0 assert on invalidation of an object
_assert_single_current_buffer FALSE if TRUE, check and assert only one current buffer
_assm_auto_tracing_threshold 0 ASSM threshold to start space search tracing
_assm_default TRUE ASSM default
_assm_examination_blocks_threshold 8196 ASSM get space number of fuzzy blocks to examine
_assm_examination_enable_sla FALSE ASSM get space enable examination limits
_assm_examination_time_threshold 60 ASSM get space examination time threshold in seconds
_assm_force_fetchmeta FALSE enable metadata block fetching in ASSM segment scan
_assm_high_gsp_threshold 11024 Number of blocks rejected before growing segment
_assm_l1cleanout_throttle_time 3 L1 bitmap block cleanout throttle time in seconds
_assm_latency_sampling_frequency 0 ASSM Latency sampling frequency in seconds
_assm_low_gsp_threshold 10000 Number of blocks rejected before collecting stats
_assm_segment_extension_percent 100 Percent of full blocks after which segment is extended
_assm_segment_repair_bg TRUE ASSM Segment repair: bg enable
_assm_segment_repair_fg 0 ASSM Segment repair: fg
_assm_segment_repair_maxblks 4294967294 ASSM Segment repair: Max blocks per slave
_assm_segment_repair_timelimit 60 ASSM Segment repair: Max time in seconds per slave
_assm_space_cache_hb_expire 3 Seconds after which higher order bitmaps expire from space cache
_assm_space_cache_max_segments 1024 ASSM Maximum Segments to Track
_assm_test_force_rej 0 assm min number of blocks to cbk-reject
_assm_test_force_rej2 0 assm min number of blocks to kdt-reject
_assm_test_reentrant_gsp FALSE assm test reentrant gsp
_async_recovery_claims TRUE if TRUE, issue recovery claims asynchronously
_async_recovery_reads TRUE if TRUE, issue recovery reads asynchronously
_async_rta_broadcast FALSE asynchronously broadcast RTA boundary
_async_scn_sync OFF Asynchronous SCN Sync Setting
_async_ts_threshold 1 check tablespace thresholds asynchronously
_atp_block_size_default TRUE ATP setting block size to 8K
_audit_operator_access FALSE enable audit of Cloud Operator access
_auto_assign_cg_for_sessions FALSE auto assign CGs for sessions
_auto_bmr enabled enable/disable Auto BMR
_auto_bmr_bg_time 3600 Auto BMR Process Run Time
_auto_bmr_fc_time 60 Auto BMR Flood Control Time
_auto_bmr_file_header TRUE Enable Auto BMR for file header fix
_auto_bmr_max_rowno 1024 x$krbabrstat Max number of rows
_auto_bmr_noretry_window 1800 Auto BMR NoRetry Window
_auto_bmr_pub_timeout 10 Auto BMR Publish Timeout
_auto_bmr_req_timeout 60 Auto BMR Requester Timeout
_auto_bmr_sess_threshold 30 Auto BMR Request Session Threshold
_auto_bmr_sys_threshold 100 Auto BMR Request System Threshold
_auto_clustering FALSE enable auto clustering related processing
_auto_clustering_sqlset SQL tuning set for auto clustering processing
_auto_compression DISABLE CDB-level auto compression parameter
_auto_db_lost_write_protect_fsfo_lag_limit_percent 67 FastStartFailoverLagLimit percent for auto lost write protection
_auto_db_lost_write_protect_max_lag_secs 60 Max apply lag in seconds for auto lost write protection
_auto_dismount_on_pdb_close FALSE Enable implicit PDB dismount on PDB close
_auto_export_preplugin_backup TRUE auto export pre-plugin backup
_auto_im_batch_size 10 Auto IM batch size
_auto_im_cache_join_opt FALSE Enable Autonomous Cached Join Optimization
_auto_im_join_group FALSE Enable Autonomous Inmemory Join group
_auto_im_max_perf_candidates 3 Auto IM Max Performance Candidates Per AutoIM cycle
_auto_im_monitor_interval 1440 Auto IM Monitor Interval
_auto_im_optimized_arithmetic FALSE Enable Autonomous Inmemory Optimized Arithmetic
_auto_im_perf_threshold 10 Auto IM performance threshold
_auto_im_play_area 10 Auto IM play area
_auto_im_rac_enabled TRUE Enable Auto IM on RAC
_auto_im_task_mode 0 Enables Auto IM auto task to run in various modes
_auto_im_vector_gby_opt FALSE Enable Autonomous Vector Group By Optimization
_auto_manage_asm_diskgroup_power_limit_max Maximum ASM diskgroup power limit value
_auto_manage_asm_diskgroup_power_limit_min Minimum ASM diskgroup power limit value
_auto_manage_enable_offline_check TRUE periodically check for OFFLINE disks and attempt to ONLINE
_auto_manage_enable_smart_rebalance TRUE OFFLINE instead of DROP disk(s) when free space is not enough for reba
_auto_manage_exadata_disks TRUE Automate Exadata disk management
_auto_manage_infreq_tout 0 TEST: Set infrequent timeout action to run at this interval, unit is s
_auto_manage_ioctl_bufsz 8192 oss_ioctl buffer size, to read and respond to cell notifications
_auto_manage_max_num_cells_offline 65535 Max. number of offline cells allowed
_auto_manage_max_online_tries 3 Max. attempts to auto ONLINE an ASM disk
_auto_manage_num_pipe_msgs 1000 Max. number of out-standing msgs in the KXDAM pipe
_auto_manage_num_tries 2 Num. tries before giving up on a automation operation
_auto_manage_online_tries_expire_time 86400 Allow Max. attempts to auto ONLINE an ASM disk after lapsing this time
_auto_manage_power_limit_adjustment_disabled FALSE Disable ASM diskgroup power limit adjustment
_auto_manage_remount_eligible_dg TRUE Periodically check for dismounte DGs, but they have in CRSthe attribu
_auto_manage_smart_rebalance_grace_period_in_min 0 Number of minutes waited after ASM diskgroup free space increases and
_auto_manage_smart_rebalance_space_threshold 0 Percentage of ASM diskgroup free space required for rebalance
_auto_mv_enabled FALSE enable/disable Auto MV logic in the sql access advisor
_auto_rcv_pdb_open 1 enable automatic recovery during pdb open
_auto_rekey_during_mrcv TRUE enable automatic rekey during media recovery (deprecated)
_auto_start_on_connect_services List of new services to start on connect in a PDB
_auto_temp_shrink_pdb_floor 0 auto temp tablespace shrink pdb floor
_autocomp_allow_fudge 120 Auto optimize allow mode fudge factor in seconds
_autocomp_allow_purgetime 2419200 Time buffer for purging allow auto optimize observation data
_autocomp_enable_thres 20 DML activity threshold to switch from allow to enable autocomp
_autocomp_inact_pct 98 Sub-segment data inactivity percentage threshold
_autocomp_move_max_mb 128 KDZADO UFC batch size
_autocomp_observation_period 604800 Auto optimize allow mode observation period in seconds
_autocomp_rowstore 0 KDZADO rowstore
_autocomp_rowstore_quiesce_thres 500 KDZADO rowstore quiesce threshold
_autoconf_mv_rewrite_metadata TRUE enable/disable mv metadata auto config logic
_automatic_maintenance_test 0 Enable AUTOTASK Test Mode
_automemory_broker_interval 3 memory broker statistics gathering interval for auto memory
_autoptn_config DBMS_AUTO_PARTITION flags
_autoptn_costing FALSE DBMS_AUTO_PARTITION is compiling query for cost estimates
_autoptn_flags 0 DBMS_AUTO_PARTITION flags
_autoptn_translate_table_name DBMS_AUTO_PARTITION table name translation
_autoptn_workload_id 0 DBMS_AUTO_PARTITION workload id
_autosts_capture_control 3 internal controls for auto STS capture
_autosts_long_interval 0 Auto STS long flush interval
_autosts_retention_interval 31 Auto STS retention interval
_autosts_short_interval 300 Auto STS short flush interval
_autotask_max_window 480 Maximum Logical Maintenance Window Length in minutes
_autotask_min_window 15 Minimum Maintenance Window Length in minutes
_autotask_test_action 0 test action parameter for AUTOTASK
_autotask_test_name N/A Name of current Autotask Test (or test step)
_autotbs_management_enabled FALSE allow automatic tablespace management
_autotbs_quota_override FALSE Override Auto TableSpace During Tablespace Quota DDLs
_autotune_gtx_idle_time 600 idle time to trigger auto-shutdown a gtx background process
_autotune_gtx_interval 5 interval to autotune global transaction background processes
_autotune_gtx_threshold 60 auto-tune threshold for degree of global transaction concurrency
_aux_dfc_keep_time 1440 auxiliary datafile copy keep time in minutes
_aux_storage_size 0 Auxillary storage for PDB.
_available_core_count 0 number of cores for this instance
_avoid_scn_growth 1 enable scn growth optimizations
_awr_adg_flush_method SYSTEM_DEFINED AWR ADG Flush Method
_awr_cdbperf_threshold 21 Setting for AWR CDBPERF Threshold
_awr_colored_app_enabled FALSE Enable/Disable AWR Colored Application functionality
_awr_corrupt_mode FALSE AWR Corrupt Mode
_awr_data_masking FALSE Enable/Disable AWR data masking functionality
_awr_disabled_flush_tables Disable flushing of specified AWR tables
_awr_disabled_purge_tables Disable purging of specified AWR tables
_awr_enable_pdb_snapshots TRUE Enable/Disable AWR PDB level snapshots
_awr_flush_threshold_metrics TRUE Enable/Disable Flushing AWR Threshold Metrics
_awr_flush_workload_metrics FALSE Enable/Disable Flushing AWR Workload Metrics
_awr_hub_autoimp_inline FALSE Enable/Disable AutoIMP in the same session handling requests
_awr_hub_consumer_group ORA$AUTOTASK Setting of Hub Consumer Group
_awr_hub_num_conc_imp 2 Setting for the number of concurrent IMP tasks at a Hub Server
_awr_incremental_flush_enabled TRUE Enable/Disable AWR automatic incremental flushing
_awr_max_registrations 1024 maximum number of registered dbids in AWR
_awr_metrics_use_mmnl FALSE Use MMNL or other background process for AWR metrics
_awr_mmon_cpuusage TRUE Enable/disable AWR MMON CPU Usage Tracking
_awr_mmon_deep_purge_all_expired FALSE Allows deep purge to purge AWR data for all expired snapshots
_awr_mmon_deep_purge_extent 7 Set extent of rows to check each deep purge run
_awr_mmon_deep_purge_interval 7 Set interval for deep purge of AWR contents
_awr_mmon_deep_purge_numrows 5000 Set max number of rows per table to delete each deep purge run
_awr_overflow_enabled FALSE Enable/Disable AWR Overflow functionality
_awr_partition_interval 0 Setting for AWR Partition Interval
_awr_pdb_registration_enabled FALSE Parameter to enable/disable AWR PDB Registration
_awr_report_gen_method ADVANCED AWR Report Generation Method
_awr_report_group_select AWR Report Select Groups
_awr_restrict_mode FALSE AWR Restrict Mode
_awr_snapshot_level BESTFIT Set Default AWR snapshot level
_awr_sql_child_limit 200 Setting for AWR SQL Child Limit
_awr_sqltext_redaction FALSE Enable/Disable AWR SQL Text Redaction
_awr_warehouse_enabled TRUE Enable/Disable AWR warehouse functionality
_awrextr_include_sqlmon FALSE Enable/disable including SQLMon data in AWR Extract
_b_tree_bitmap_plans TRUE enable the use of bitmap plans for tables w. only B-tree indexes
_ba_cf_trace_buffer_size 131072 size of per-process I/O KBC trace buffer
_ba_container_filesystem_ausize 4194304 allocation unit size for Backup Appliance containers
_ba_max_containers 0 maximum number of Backup Appliance containers
_ba_max_groups 0 maximum number of Backup Appliance container groups
_ba_max_seg_bytes 4000 maximum number of bytes per array segment
_ba_timeouts_enabled TRUE enable timeouts
_background_process_opts 0 Misc BG procs parameter
_backup_align_write_io TRUE align backup write I/Os
_backup_appliance_enabled FALSE Backup Appliance Enabled
_backup_automatic_retry 10 automatic retry on backup write errors
_backup_block0 default backup block0
_backup_bool_spare1 FALSE backup bool spare1
_backup_bool_spare2 FALSE backup bool spare2
_backup_bool_spare3 FALSE backup bool spare3
_backup_bool_spare4 FALSE backup bool spare4
_backup_compress FALSE turn on backup compression always
_backup_disk_bufcnt 0 number of buffers used for DISK channels
_backup_disk_bufsz 0 size of buffers used for DISK channels
_backup_disk_io_slaves 0 BACKUP Disk I/O slaves
_backup_dynamic_buffers TRUE dynamically compute backup/restore buffer sizes
_backup_encrypt_opt_mode 4294967294 specifies encryption block optimization mode
_backup_file_bufcnt 0 number of buffers used for file access
_backup_file_bufsz 0 size of buffers used for file access
_backup_int_spare1 4294967294 backup int spare1
_backup_int_spare2 4294967294 backup int spare2
_backup_int_spare3 4294967294 backup int spare3
_backup_int_spare4 4294967294 backup int spare4
_backup_interrupt_wait_time 1000 specifies interrupt wait time in centi seconds
_backup_io_pool_size 1048576 memory to reserve from the large pool
_backup_kgc_bz2_bufsz 0 specifies buffer size to be used by BZ2 compression
_backup_kgc_bz2_niters 0 specifies number of iterations done by BZ2 compression
_backup_kgc_bz2_type 0 specifies type used by BZ2 compression
_backup_kgc_bzip2_blksiz 9 specifies buffer size to be used by BZIP2 compression
_backup_kgc_lzo_bufsz 262144 specifies buffer size to be used by LZO compression
_backup_kgc_medium_scheme DEFAULT specifies medium compression scheme
_backup_kgc_scheme ZLIB specifies compression scheme
_backup_kgc_zlib_complevel 1 specifies compression (performance) level for ZLIB compression
_backup_kgc_zlib_memlevel 8 specifies memory level for ZLIB compression
_backup_kgc_zlib_windowbits 15 specifies window size for ZLIB compression
_backup_kgc_zstd_bufsz 262144 specifies buffer size to be used by ZSTD compression
_backup_kgc_zstd_complevel 3 specifies compression (performance) level for ZSTD compression
_backup_kgc_zstd_high_complevel 14 specifies compression (performance) level for ZSTD compression
_backup_ksfq_bufcnt 0 number of buffers used for backup/restore
_backup_ksfq_bufmem_max 268435456 maximum amount of memory (in bytes) used for buffers for backup/restor
_backup_ksfq_bufsz 0 size of buffers used for backup/restore
_backup_max_gap_size 4294967294 largest gap in an incremental/optimized backup buffer, in bytes
_backup_max_wallet_session 50 specifies maximum wallet session for backup
_backup_min_ct_unused_optim 2097152 mimimun size in bytes of change tracking to apply unused space optimuz
_backup_seq_bufcnt 0 number of buffers used for non-DISK channels
_backup_seq_bufsz 0 size of buffers used for non-DISK channels
_backup_text_spare1 backup text spare1
_backup_text_spare2 backup text spare2
_backup_text_spare3 backup text spare3
_backup_text_spare4 backup text spare4
_bct_auto_ctf_shrink FALSE allow change tracking file shrink on resize
_bct_bitmaps_per_file 8 number of bitmaps to store for each datafile
_bct_buffer_allocation_max 1073741824 maximum size of all change tracking buffer allocations, in bytes
_bct_buffer_allocation_min_extents 1 mininum number of extents to allocate per buffer allocation
_bct_buffer_allocation_size 2097152 size of one change tracking buffer allocation, in bytes
_bct_chunk_size 0 change tracking datafile chunk size, in bytes
_bct_crash_reserve_size 262144 change tracking reserved crash recovery SGA space, in bytes
_bct_dba_buffer_reap_threshold 2000 threshold for reaping changes per strand at a time
_bct_ext_alo_count 320 extent granule size to use during ctf resize
_bct_ext_min_count 320 min extents to allocate in change tracking file
_bct_file_block_size 0 block size of change tracking file, in bytes
_bct_file_extent_size 0 extent size of change tracking file, in bytes
_bct_fixtab_file change tracking file for fixed tables
_bct_health_check_interval 0 CTWR health check interval (seconds), zero to disable
_bct_imt_suppress_charset_validation 3 blockchain/immutable table character validation level
_bct_min_switch_freq 43200 Min time interval between bitmap switches in seconds
_bct_mrp_timeout 5 CTWR MRP wait timeout (seconds), zero to wait forever
_bct_public_dba_buffer_dynresize 2 allow dynamic resizing of public dba buffers, zero to disable
_bct_public_dba_buffer_dynresize_delay 3600 control frequency of dynamic resizing of public dba buffers
_bct_public_dba_buffer_maxsize 0 max buffer size permitted for public dba buffers, in bytes
_bct_public_dba_buffer_size 0 total size of all public change tracking dba buffers, in bytes
_bct_wait_before_trace_dump 120 seconds after which BCT would dump traces for debugging
_bctab_max_system_chains 1024 blockchain table's maximum number of system chains
_bctab_optimize_commit_performance FALSE optimize blockchain table commit performance
_beirut_timeout_minutes 10 beirut wait timeout in minutes
_bequeath_via_broker FALSE Bequeath connections via broker
_bg_dgpdb_rcv_parallelism 0 BG DGPDB recovery parallelism
_bg_spawn_diag_opts 0 background processes spawn diagnostic options
_big_scn_test_mode 2 testing mode for BigSCN
_bigdata_external_table TRUE enables use of ORACLE_HIVE and ORACLE_HDFS access drivers
_bigdata_offload_flag FALSE BigDataSQL offload flag
_bigram_dependency_percentage 5 Bigram dependency percentage
_bind_undotbs DISABLED Bind to undo tbs according to size
_bitmap_or_improvement_enabled TRUE controls extensions to partition pruning for general predicates
_block_change_tracking_file file location for broker to reenable BCT
_block_corruption_track_limit 1000 block corruption track limit
_block_dump_assert FALSE Encrypted block dump assert
_block_level_offload_high_lat_thresh 40000 High Latency Threshold for Block Level Offload operations
_block_sample_readahead_prob_threshold 10 controls readahead value during block sampling
_blockchainHeapSize 0 Set the heap size in bytes for blockchain
_blockchainTracing 0 Set tracing for blockchain
_blockchain_forced_off NOT_SET force off blockchain
_blockchain_immutable_table blockchain/immutable table behavior
_blockchain_txn_apis_enabled TRUE If true, the txn layer blockchain API'S kick in
_blockchain_txn_test_lvl 0 blockchain txn test lvl
_blockhm_flush_period 3600 Block heat map background flush period
_blocking_sess_graph_cache_size blocking session graph cache size in bytes
_blocks_per_cache_server 1 number of consecutive blocks per global cache server
_bloom_extent_size 0 bloom filter extent size in bytes
_bloom_filter_debug 0 debug level for bloom filtering
_bloom_filter_enabled TRUE enables or disables bloom filter
_bloom_filter_multi_bit FALSE Multi-bit bloom filter
_bloom_filter_ratio 35 bloom filter filtering ratio
_bloom_filter_setops_enabled TRUE Allow bloom filter to be pushed through set operations
_bloom_filter_size 0 bloom filter vector size (in KB)
_bloom_folding_density 16 bloom filter folding density lower bound
_bloom_folding_enabled TRUE Enable folding of bloom filter
_bloom_folding_min 0 bloom filter folding size lower bound (in KB)
_bloom_max_size 262144 maximum bloom filter size (in KB)
_bloom_max_wait_time 50 bloom filter wait time upper bound (in ms)
_bloom_minmax_enabled TRUE enable or disable bloom min max filtering
_bloom_predicate_enabled TRUE enables or disables bloom filter predicate pushdown
_bloom_predicate_offload TRUE enables or disables bloom filter predicate offload to cells
_bloom_pruning_enabled TRUE Enable partition pruning using bloom filtering
_bloom_pruning_setops_enabled TRUE Allow bloom pruning to be pushed through set operations
_bloom_pushing_folding_density 4 bloom filter pushing folding density lower bound pushing to sage
_bloom_pushing_max 512 bloom filter pushing size upper bound (in KB)
_bloom_pushing_total_max 20971520 bloom filter combined pushing size upper bound (in KB)
_bloom_rm_filter FALSE remove bloom predicate in favor of zonemap join pruning predicate
_bloom_serial_filter ON enable serial bloom filter on exadata
_bloom_sm_enabled TRUE enable bloom filter optimization using slave mapping
_bloom_use_shared_pool FALSE use shared pool for bloom filter
_bloom_wait_on_rac FALSE enables bloom filter (with hash hash distribution) wait on RAC
_boc_mode AUTO Broadcast-on-commit mode
_boc_rdma_wait_time 0 BOC RDMA busy wait time (microseconds)
_bps_sanity_checks FALSE enable BPS sanity checks
_branch_tagging TRUE enable branch tagging for distributed transaction
_broadcast_scn_mode 1 broadcast-on-commit scn mode
_broadcast_scn_wait_timeout 10 broadcast-on-commit scn wait timeout in centiseconds
_broker_imc_max_utilstep 95 max util percentage for imc by bg auto tuning.
_bsln_adaptive_thresholds_enabled TRUE Adaptive Thresholds Enabled
_bt_mmv_query_rewrite_enabled TRUE allow rewrites with multiple MVs and base tables
_buddy_instance 1 buddy instance control
_buddy_instance_num_read_buffers 4 Num of Read Buffers to scan everytime in Buddy Instance feature
_buddy_instance_scan_phase_threshold 3 Threshold (in secs) to let RMS0 construct the recovery set
_buddy_instance_start_rba_timeout 9 Time-out for re-computing Start RBA in Buddy Instance feature
_buffer_busy_wait_timeout 100 buffer busy wait time in centiseconds
_buffer_requests_to_drain 5 Buffer for requests to drain before planned failover
_buffered_message_spill_age 300 Buffered message spill age
_buffered_publisher_flow_control_threshold 0 Flow control threshold for buffered publishers except capture
_bufq_stop_flow_control FALSE Stop enforcing flow control for buffered queues
_build_deferred_mv_skipping_mvlog_update TRUE DEFERRED MV creation skipping MV log setup update
_bump_highwater_mark_count 0 how many blocks should we allocate per free list on advancing HWM
_bwr_for_flushed_pi TRUE if TRUE, generate a BWR for a flushed PI
_bypass_sensitive_context FALSE bypass sensitive handling for specific SYS_CONTEXT() parameters
_bypass_srl_for_so_eor FALSE bypass SRL for S/O EOR logs
_bypass_xplatform_error FALSE bypass datafile header cross-platform-compliance errors
_c3_external_scn_rejection_threshold_hours 4464 Lag in hours between max allowed SCN and an external SCN
_cache_fusion_pipelined_updates TRUE Configure smart fusion block transfer
_cache_fusion_pipelined_updates_enable Enable smart fusion block transfer
_cache_lobs_pga_limit 75 Set the percentage limit in the PGA aggregate use to create LOBs in ca
_cache_orl_during_open ALL cache online logs
_cache_stats_monitor FALSE if TRUE, enable cache stats monitoring
_capability_simulate Simulate the capabilities for testing
_capture_buffer_size 65536 To set the size of the PGA I/O recording buffers
_capture_pgadep 0 capture statements at this pgadep
_capture_publisher_flow_control_threshold 0 Flow control threshold for capture publishers
_case_sensitive_logon TRUE case sensitive logon enabled
_catalog_foreign_restore FALSE catalog foreign file restore
_catalog_soft_assert_diag FALSE Soft assert with diag info for catalog app
_causal_standby_wait_timeout 20 Causal standby wait timeout
_cdb_compatible TRUE CDB Compatible
_cdb_cross_container 65535 Debug flag for cross container operations
_cdb_disable_pdb_limit FALSE CDB Compatible
_cdb_fleet_sync_timeout 10 Time in minutes to wait for sync of stub entry in CDB Fleet
_cdb_init_batch_size 100 Batch size for reading pdb info during CDB mount
_cdb_port 0 Port number for CDB Servlet
_cdb_rac_affinity TRUE rac affinity for parallel cdb operations
_cdb_special_old_xplan FALSE display old-style plan for CDB special fixed table
_cdb_spfile_inherit FALSE Inherit CDB Spfile enabled/disabled in a PDB
_cdb_svlt_use_tcps FALSE Use TCPS for CDB Servlet
_cdb_view_no_skip_migrate FALSE do not skip OPEN MIGRATE PDBs from results of CONTAINERS()
_cdb_view_no_skip_restricted FALSE do not skip RESTRICTED mode PDBs from results of CONTAINERS()
_cdb_view_parallel_degree 65535 Parallel degree for a CDB view query
_cdb_view_prefetch_batch_size 200 Batch Size for Prefetch for a CDB view query
_cdb_view_rc_shelflife 30 Result Cache Shelflife for a CDB view query
_cdb_view_recursive_px_enabled TRUE enable parallelism of recursive SQL under CONTAINERS()
_cdb_view_serial_ok FALSE is serial OK for cross-container
_cdc_subscription_owner Change Data Capture subscription_owner
_cdmp_diagnostic_level 2 cdmp directory diagnostic level
_cell_fast_file_create TRUE Allow optimized file creation path for Cells
_cell_fast_file_restore TRUE Allow optimized rman restore for Cells
_cell_file_format_chunk_size 0 Cell file format chunk size in MB
_cell_index_scan_enabled TRUE enable CELL processing of index FFS
_cell_iot_scan_enabled TRUE enable CELL processing of IOT FFS
_cell_materialize_all_expressions FALSE Force materialization of all offloadable expressions on the cells
_cell_materialize_virtual_columns TRUE enable offload of expressions underlying virtual columns to cells
_cell_metadata_compression AUTO Cell metadata compression strategy
_cell_object_expiration_hours 24 flashcache object expiration timeout
_cell_offload_capabilities_enabled 1 specifies capability table to load
_cell_offload_complex_processing TRUE enable complex SQL processing offload to cells
_cell_offload_expressions TRUE enable offload of expressions to cells
_cell_offload_grand_total TRUE allow offload of grand total aggregations
_cell_offload_hybrid_processing TRUE enable hybrid SQL processing offload to cells
_cell_offload_hybridcolumnar TRUE Query offloading of hybrid columnar compressed tables to exadata
_cell_offload_predicate_reordering_enabled FALSE enable out-of-order SQL processing offload to cells
_cell_offload_sys_context TRUE enable offload of SYS_CONTEXT evaluation to cells
_cell_offload_timezone TRUE enable timezone related SQL processing offload to cells
_cell_offload_vector TRUE Query offloading of vector operators to exadata
_cell_offload_vector_groupby TRUE enable SQL processing offload of vector group by
_cell_offload_vector_groupby_external TRUE enable cell offload of vector group by with external tables
_cell_offload_vector_groupby_fact_key TRUE enable cell offload of vector group by with fact grouping keys
_cell_offload_vector_groupby_force FALSE force offload of vector group by
_cell_offload_vector_groupby_withnojoin TRUE allow offload of vector group by without joins
_cell_offload_virtual_columns TRUE enable offload of predicates on virtual columns to cells
_cell_range_scan_enabled TRUE enable CELL processing of index range scans
_cell_storidx_minmax_enabled TRUE enable Storage Index Min/Max optimization on the cells
_cell_storidx_mode EVA Cell Storage Index mode
_cell_trace_size 0 max trace size in bytes shipped back to server per filtering task
_cellcache_clause_default Default cellcache clause for new tables
_cellcache_default_flags 2 Default flags based on cellcache_clause_default
_cellcache_default_new FALSE Force cellcache on new tables
_cenv_check_for_internal_pdb_switch FALSE do compilation env check while in internal PDB switch
_cgs_allgroup_poll_time 20000 CGS DBALL group polling interval in milli-seconds
_cgs_big_group_enabled FALSE big group membership support
_cgs_clscevents_dumpinterval 600 cgs clsce events statistics dump interval in seconds
_cgs_combine_css_events 31 CGS registration flags for CSS event combining
_cgs_comm_readiness_check 1 CGS communication readiness check
_cgs_dball_group_registration local CGS DBALL group registration type
_cgs_dbgroup_poll_time 600 CGS DB group polling interval in milli-seconds
_cgs_health_check_in_reconfig FALSE CGS health check during reconfiguration
_cgs_memberkill_from_rim_instance FALSE allow a RIM instance to issue a CSS member kill
_cgs_msg_batch_size 4096 CGS message batch size in bytes
_cgs_msg_batching TRUE CGS message batching
_cgs_node_kill_escalation TRUE CGS node kill escalation to CSS
_cgs_node_kill_escalation_wait 0 CGS wait time to escalate node kill to CSS in seconds
_cgs_os_level_connection_check 1 allow OS level connection and interface check
_cgs_os_level_connection_dynamicthread TRUE allow oraping to spawn more threads than the default.
_cgs_os_level_connection_reqno 0 number of ping rqst to process at once, threads created
_cgs_publish_netinfo_collect_event_chm rcfg-half-timeout,rc enable cgs publish collect_netinfo event to event stream for CHM
fg-timeout,rcfg-done
,idleconn-half-timeo
ut,idleconn-timeout-
imr,idleconn-cln,rcf
g-begin,rcfg-pngchkd
one,rcfg-memchg
_cgs_publish_netinfo_collect_event_chmjf TRUE enable cgs publish collect_netinfo event to event stream for CHM with
_cgs_publish_netinfo_collect_event_chmjf_batchsz 0 batch size of cgs events publishing to CHM in json format via clsce ev
_cgs_publish_netinfo_collect_event_haip TRUE enable cgs publish collect_netinfo event to event stream for HAIP
_cgs_query_net_interface SCLSI api to query network interface
_cgs_reconfig_extra_wait 3 CGS reconfiguration extra wait time for CSS in seconds
_cgs_reconfig_poll_time 20 CGS polling interval during reconfig in milli-seconds
_cgs_reconfig_timeout 0 CGS reconfiguration timeout interval
_cgs_send_timeout 300 CGS send timeout value
_cgs_support_rim_disc TRUE rim instance disconnect and reconnect event support
_cgs_ticket_sendback 50 CGS ticket active sendback percentage threshold
_cgs_tickets 1000 CGS messaging tickets
_cgs_zombie_member_kill_wait 20 CGS zombie member kill wait time in seconds
_change_vector_buffers 1 Number of change vector buffers for media recovery
_change_vector_read_sample_ratio 0 Sample ratio of change vector read timestamp on ADG
_check_block_after_checksum FALSE check block before write irrespective of db_block_checking
_check_block_new_invariant_for_flashback FALSE check block new invariant for flashback
_check_column_length TRUE check column length
_check_pdbid_in_redo FALSE Enable checking of pluggable database ID in redo
_check_ts_threshold 0 check tablespace thresholds
_child_read_ahead_dba_check FALSE if TRUE, assert child read ahead dba to be continuous of parent
_chunk_pruning_enabled TRUE enable chunk based partition pruning in sharding
_cleanout_shrcur_buffers TRUE if TRUE, cleanout shrcur buffers
_cleanup_file_copy TRUE Enable file cleanup in Create PDB
_cleanup_rollback_entries 100 no. of undo entries to apply per transaction cleanup
_cleanup_timeout 150 timeout value for PMON cleanup
_cleanup_timeout_flags 0 flags for PMON cleanup timeout
_clear_buffer_before_reuse FALSE Always zero-out buffer before reuse for security
_clear_preserved_buffers TRUE Clear preserved buffers before DB reopen after switchover
_clear_srl_during_so 2 Enable/Disable clearing SRLs during switchover
_cli_cachebktalloc 100 Percentage of memory to allocate
_client_enable_auto_unregister FALSE enable automatic unregister after a send fails with timeout
_client_features_tracking_enable TRUE track client feature uage
_client_ntfn_cleanup_interval 2400 interval after which dead client registration cleanup task repeats
_client_ntfn_max_cleanup_interval 7200 max limit for cleanup interval
_client_ntfn_pinginterval 75 time between pings to unreachable notification clients
_client_ntfn_pingretries 6 number of times to ping unreachable notification clients
_client_ntfn_pingtimeout 30000 timeout to connect to unreachable notification clients
_client_result_cache_bypass FALSE bypass the client result cache
_client_result_cache_ramthreshold client_result_cache_ramthreshold
_client_result_set_threshold client_result_set_threshold
_client_tstz_error_check TRUE Should Client give error for suspect Timestamp with Timezone operation
_clone_during_split TRUE if TRUE, clone buffer during index split
_clone_one_pdb_recovery FALSE Recover ROOT and only one PDB in clone database
_close_cached_open_cursors FALSE close cursors cached by PL/SQL at each commit
_close_deq_by_cond_curs FALSE Close Dequeue By Condition Cursors
_cloud_domain internal domain name used for cloud deployments
_cloud_mandatory_profile_setup FALSE Mandatory Profile Setup for Multitenant Cloud Environment
_cloud_migration_mode FALSE Enable special migration mode to tweak sql statements
_cloud_name gsm cloud name
_cloud_operator_user list of Cloud Operator users
_cloud_service_sim 0 simulate cloud services in Database
_cloud_service_type cloud service type
_cloud_service_version Cloud Service Version
_cloud_session_svc_params FALSE Set service specific parameters in cloud session
_cloud_table_commit_time_limit 0 export threshold (time) for buffered cloud table
_cloud_table_read_size 10485760 READSIZE parameter for for external tables used by cloud tables
_cloud_table_reject_limit 0 REJECT LIMIT parameter for external tables used by cloud tables
_cloud_trace 0 send supported trace file types to the cloud
_cloud_trace_bucket_fill_percent 50 cloud trace bucket fill threshold
_cloud_trace_bucket_size 10485760 cloud trace bucket size
_cloud_trace_temp_table cloud tracing temp table
_cloudops_common_users List of common users to be treated as Cloud Ops
_cloudops_sensitive_masking OFF Mask sensitive information in customer PDBs from Cloud Ops
_cloudsql_jg_enabled FALSE enable JG granulation support
_cloudsql_offload_enabled TRUE enable CloudSQL cell offload support
_cluster_database_instances 1 number of instances to use for sizing cluster db SGA structures
_cluster_flash_cache_slave_file cluster flash cache slave file for default block size
_cluster_flash_cache_slave_size 0 cluster flash cache slave file size for default block size
_cluster_instances_number 4 number of instances to calculate number of resource buckets
_cluster_library clss cluster library selection
_clusterwide_global_transactions TRUE enable/disable clusterwide global transactions
_collapse_wait_history FALSE collapse wait history
_collect_tempundo_stats TRUE Collect Statistics v$tempundostat
_collect_undo_stats TRUE Collect Statistics v$undostat
_column_compression_factor 0 Column compression ratio
_column_elimination_off FALSE turn off predicate-only column elimination
_column_level_stats OFF Turn column statistics collection on or off
_column_stats_flush_interval 60 column-level statistics flush to disk interval
_column_stats_max_entries_per_stat 5 column-level statistics max entries saved per stat type
_column_stats_mem_limit 10 percentage of the max shared pool column-level statistics can use - in
_column_tracking_level 53 column usage tracking
_commit_tracking_fxt_tab_size 360 commit tracking fixed table size
_common_data_view_enabled TRUE common objects returned through dictionary views
_common_directory_access ALLOW Manage access to common directory objects inside the PDB
_common_directory_access_mode ALL Access mode for common directory objects inside the PDB
_common_user_prefix C## Enforce restriction on a prefix of a Common User/Role/Profile name
_compilation_call_heap_extent_size 16384 Size of the compilation call heaps extents
_complex_view_merging TRUE enable complex view merging
_component_timing Oracle parameter used for component tracking and timing
_composite_interval_partition_creation_opt_enabled TRUE when creating interval/auto list partitions, defer subpartition segmen
_compression_above_cache 0 number of recompression above cache for sanity check
_compression_advisor 0 Compression advisor
_compression_chain 90 percentage of chained rows allowed for Compression
_compression_compatibility 23.6.0 Compression compatibility
_con_map_sql_enforcement TRUE disable container map SQL enforcement
_con_number_reuse_threshold 2147483647 CON# begin reuse threshold
_concurrency_chosen 10 what is the chosen value of concurrency
_connect_by_use_union_all TRUE use union all for connect by
_connect_string_settings_after_logon_triggers 0 set connect string session settings after logon triggers
_connect_string_settings_unalterable 0 make connect string session settings unalterable
_connection_broker_error_new_limit 100 connection broker error limit for new connections
_connection_broker_handout_accept FALSE connection broker accepts prior to handout
_connection_broker_host localhost connection broker host for listen address
_connstr_test_param 0 connect string workload behavior spare param
_consensus_follower_election_timeout 12000 consensus follower's election timeout
_consensus_leader_heartbeat_interval 6000 consensus leader's heartbeat interval
_consensus_leader_maximum_heartbeats consensus leader's maximum heartbeats
_consensus_queue_maximum_elements 10 consensus queue maximum elements
_consensus_slaves_maximum_count 5 consensus slaves maximum count
_containers_dop_use_remote FALSE should dop take into account PDBs open on a remote instance
_containers_multiple_ptn_key TRUE enable multiple partition keys for container views
_containers_remote FALSE enable containers query to use database link
_controlfile_auto_convert_behaviour AUTO_CONVERT controlfile auto convert behavior for a mixed platform dataguard.
_controlfile_autobackup_delay 300 time delay (in seconds) for performing controlfile autobackups
_controlfile_backup_copy_check TRUE enable check of the copied blocks during controlfile backup copy
_controlfile_block_corruption_keep_records 4294967294 block corruption records to keep
_controlfile_block_size 0 control file block size in bytes
_controlfile_cache_bpb 4 Control file cache buffers per bucket
_controlfile_cache_bpp 32 Control file cache buckets per pool
_controlfile_cache_recvrbsz 4096 Control file cache recv ring buffer size
_controlfile_cache_sendrbsz 4096 Control file cache send ring buffer size
_controlfile_cache_size 8388608 Size of control file cache in blocks
_controlfile_cache_timer 600 Control file cache buffers per bucket
_controlfile_cell_flash_caching 3 Flash cache hint for control file accesses
_controlfile_enable_rdma_read TRUE enable controlfile rdma read
_controlfile_enqueue_dump FALSE dump the system states after controlfile enqueue timeout
_controlfile_enqueue_holding_time 120 control file enqueue max holding time in seconds
_controlfile_enqueue_holding_time_tracking_size 0 control file enqueue holding time tracking size
_controlfile_enqueue_timeout 900 control file enqueue timeout in seconds
_controlfile_section_init_size control file initial section size
_controlfile_section_max_expand control file max expansion rate
_controlfile_split_brain_check FALSE Check for a split-brain in distributed lock manager domain
_controlfile_update_check LOW controlfile update sanity check
_controlfile_validate_on_search FALSE Validate control file blocks on search
_controlfile_verify_on_mount FALSE Verify control file blocks on header error during mount
_convert_set_to_join FALSE enables conversion of set operator to join
_coord_message_buffer 0 parallel recovery coordinator side extra message buffer size
_corrupted_rollback_segments corrupted undo segment list
_cost_equality_semi_join TRUE enables costing of equality semi-join
_cp_del_free_sess TRUE connection pool: delete free sessions when at PDB limit
_cp_del_free_sess_limit_secs 1 connection pool: delete free sessions time limit (in seconds)
_cp_num_hash_latches connection pool number of hash latches
_cpu_count_startup 0 Startup number of CPUs for this instance
_cpu_eff_thread_multiplier CPU effective thread multiplier
_cpu_to_io 0 divisor for converting CPU cost to I/O cost
_cpu_util_adj_force 1 force cpu util adjustment
_cpu_util_adj_target 0 cpu utilization adjustment target
_cputime_limit_parallel_fptr 60 CPU-time limit for for parallel first-pass recovery
_cr_grant_global_role TRUE if TRUE, grant lock for CR requests when block is in global role
_cr_grant_local_role AUTO turn 3-way CR grants off, make it automatic, or turn it on
_cr_grant_only FALSE if TRUE, grant locks when possible and do not send the block
_cr_multiblock_grant_only FALSE if TRUE, grant locks for multiblock read when possible and do not send
_cr_rollbacks 0 Maximum number of CR rollbacks per block under CR server
_cr_server_log_flush TRUE if TRUE, flush redo log before serving a CR buffer
_cr_trc_buf_size 8192 size of cr trace buffer
_crash_domain_on_exception 0 allow domain to exit for exceptions in any thread
_create_idx_from_constraint FALSE allow trigger to create index from constraint
_create_pdb_disable_mirror_reads FALSE Disable mirror reads during create pdb
_create_pdb_flashback_barrier FALSE force flashback barrier for create pdb
_create_sensitive_credential FALSE Create scheduler credential as sensitive for cloud environment
_create_stat_segment 0 create ilm statistics segment
_create_table_in_any_cluster FALSE allow creation of table in a cluster not owned by the user
_cross_con_collection TRUE enable cross container collection
_cross_con_remove_pushed_preds FALSE remove pushed predicates from query fetching across containers
_cross_con_row_count FALSE use actual row count for cross container views
_cross_region_refclone TRUE Enable cross region refreshable clones for Cloud links
_crs_2phase bypass crs 2phase
_cstats_enabled FALSE Core stat monitoring enabled
_ctas_numfrags_hint 0 Hint for number of partition fragments to be loaded in a CTAS
_ctc_no_pdb_shrink_check 0 Disable PDB shrink check for background cleanup operations
_ctex_fk_copy_mode 1 Create table for exchange Copy mode for referential constraints
_cu_reorg_base_delay 8 Base delay value for (M)HCC Reorganization
_cu_reorg_max_retries 2 Maximum retries for (M)HCC Reorganization
_cu_reorg_threshold 95 Deleted row threshold for (M)HCC Reorganization eligibility
_cu_row_locking 0 CU row level locking
_current_session_at_dbtimezone FALSE Set default session timezone to PDB timezone
_current_time_at_dbtimezone FALSE use DB timezone when computing current time
_cursor_bind_capture_area_size 400 maximum size of the cursor bind capture area
_cursor_bind_capture_interval 900 interval (in seconds) between two bind capture for a cursor
_cursor_cache_time 900 number of seconds a session cached cursor stay in cache.
_cursor_db_buffers_pinned 2134 additional number of buffers a cursor can pin at once
_cursor_diagnostic_node_agedout_count 100 Number of cursor-sharing diagnostic nodes to retain before reuse
_cursor_features_enabled 8194 Shared cursor features enabled bits.
_cursor_obsolete_threshold 8192 Number of cursors per parent before obsoletion.
_cursor_plan_enabled TRUE enable collection and display of cursor plans
_cursor_plan_hash_version 1 version of cursor plan hash value
_cursor_plan_unparse_enabled TRUE enables/disables using unparse to build projection/predicates
_cursor_reload_failure_threshold 20 Number of failed reloads before marking cursor unusable
_cursor_runtimeheap_memlimit 5242880 Shared cursor runtime heap memory limit
_cursor_stats_enabled TRUE Enable cursor stats
_cursor_stats_purge_threshold 0 Cursor stats purge threshold in minutes
_cvw_enable_weak_checking TRUE enable weak view checking
_cvw_examine_tables_in_from_list_subqry TRUE examine tables in from list subqueries
_data_access_stats FALSE Track data access queries to collect stats
_data_access_stats_depth 0 Tracks data access query depth to collect stats
_data_guard_redo_statistics 31 Enable/Disable redo statistics
_data_guard_val_redo 65537 Enable/Disable redo validation
_data_link_remote FALSE transform data link to use database link
_data_transfer_cache_bc_perc_x100 500 Percentange * 100 of buffer cache to transfer to data transfer cache
_data_warehousing_scan_buffers TRUE if TRUE, enable data warehousing scan buffers
_data_warehousing_scan_flash_buffers FALSE if TRUE, enable data warehousing scan flash buffers
_data_warehousing_serial_scan TRUE if TRUE, enable data warehousing serial scans
_database_role PRIMARY current role to set parameter values automatically based on role
_datafile_cow FALSE Use copy on write snapshot for the renamed file
_datafile_create_min_wait_time 0 Minimum wait time for standby during data file creation
_datafile_create_wait_time 0 Wait time for standby during data file creation
_datafile_open_errors_crash_instance TRUE datafile open errors crash instance
_datafile_write_errors_crash_instance TRUE datafile write errors crash instance
_datamemory_area_size 1073741824 total size in bytes of in-memory area
_datamemory_favor_empty_granules_for_shrink 2 Datamemory favor empty granules during shrink
_datapump_bypass_tstz_check FALSE Bypass Data Pump TSTZ version checking during import.
_datapump_compressbas_buffer_size 0 specifies buffer size for BASIC compression algorithm
_datapump_conv_pga_lim 0 pga limit for Data Pump conventional path bind array size
_datapump_gather_stats_on_load FALSE Gather table statistics during Data Pump load rather thanimporting sta
_datapump_hide_cdb_warning FALSE Hide Data Pump warning for CDB$ROOT and PDB$SEED
_datapump_inherit_svcname TRUE Inherit and propagate service name throughout job
_datapump_metadata_buffer_size 131072 specifies buffer size for metadata file I/O
_datapump_net_transfer_size 0 data pump direct path network unload transfer size
_datapump_tabledata_buffer_size 262144 specifies buffer size for table data file I/O
_db_16k_cache_xmem_size 0 Size of 16k buffer pool on extended cache
_db_16k_flash_cache_file flash cache file for 16k block size
_db_16k_flash_cache_size 0 flash cache size for _db_16k_flash_cache_file
_db_2k_cache_xmem_size 0 Size of 2k buffer pool on extended memory
_db_2k_flash_cache_file flash cache file for 2k block size
_db_2k_flash_cache_size 0 flash cache size for _db_2k_flash_cache_file
_db_32k_cache_xmem_size 0 Size of 32k buffer pool on extended memory
_db_32k_flash_cache_file flash cache file for 32k block size
_db_32k_flash_cache_size 0 flash cache size for _db_32k_flash_cache_file
_db_4k_cache_xmem_size 0 Size of 4k buffer pool on extended cache
_db_4k_flash_cache_file flash cache file for 4k block size
_db_4k_flash_cache_size 0 flash cache size for _db_4k_flash_cache_file
_db_8k_cache_xmem_size 0 Size of 8k buffer pool on extended cache
_db_8k_flash_cache_file flash cache file for 8k block size
_db_8k_flash_cache_size 0 flash cache size for _db_8k_flash_cache_file
_db_active_prewarm_expiration 240 active prewarming file expiration interval
_db_active_prewarm_interval 60 active prewarming interval
_db_active_prewarm_spare1 0 active prewarming spare
_db_active_prewarm_spare2 0 active prewarming spare 2
_db_aging_cool_count 1 Touch count set when buffer cooled
_db_aging_freeze_cr FALSE Make CR buffers always be too cold to keep in cache
_db_aging_hot_criteria 2 Touch count which sends a buffer to head of replacement list
_db_aging_stay_count 0 Touch count set when buffer moved to head of replacement list
_db_aging_touch_time 3 Touch count which sends a buffer to head of replacement list
_db_always_check_system_ts TRUE Always perform block check and checksum for System tablespace
_db_block_adjcheck TRUE adjacent cache buffer checks - low blkchk overwrite parameter
_db_block_adjchk_level 0 adjacent cache buffer check level
_db_block_align_direct_read TRUE Align Direct Reads
_db_block_bad_write_check FALSE enable bad write checks
_db_block_buffers 683520 Number of database blocks cached in memory: hidden parameter
_db_block_cache_history_lru FALSE buffer header tracing for lru operations
_db_block_cache_protect false protect database blocks (for debugging only)
_db_block_cache_protect_internal 0 protect database blocks (for internal use only)
_db_block_check_for_debug FALSE Check more and dump block before image for debugging
_db_block_check_objtyp TRUE check objd and typ on cache disk read
_db_block_chunkify_ncmbr FALSE chunkify noncontig multi block reads
_db_block_corruption_recovery_threshold 30 threshold number of block recovery attempts
_db_block_do_full_mbreads FALSE do full block read even if some blocks are in cache
_db_block_hash_buckets 2097152 Number of database block hash buckets
_db_block_hash_latches 16384 Number of database block hash latches
_db_block_header_guard_level 0 number of extra buffer headers to use as guard pages
_db_block_hi_priority_batch_size 0 Fraction of writes for high priority reasons
_db_block_iterations_for_rm 2000 number of blocks to reduce every iteration for RM
_db_block_known_clean_pct 2 Initial Percentage of buffers to maintain known clean
_db_block_lru_latches 36 number of lru latches
_db_block_max_cr_dba 6 Maximum Allowed Number of CR buffers per dba
_db_block_max_scan_pct 40 Percentage of buffers to inspect when looking for free
_db_block_med_priority_batch_size 0 Fraction of writes for medium priority reasons
_db_block_numa 1 Number of NUMA nodes
_db_block_prefetch_fast_longjumps_enabled TRUE Batched IO enable fast longjumps
_db_block_prefetch_limit 0 Prefetch limit in blocks
_db_block_prefetch_override 0 Prefetch force override in blocks
_db_block_prefetch_private_cache_enabled TRUE Batched IO enable private cache
_db_block_prefetch_quota 10 Prefetch quota as a percent of cache size
_db_block_prefetch_skip_reading_enabled TRUE Batched IO enable skip reading buffers
_db_block_prefetch_wasted_threshold_perc 2 Allowed wasted percent threshold of prefetched size
_db_block_scandepth_for_rm 20 number of blocks to reduce every iteration for RM
_db_block_table_scan_buffer_size 4194304 Size of shared table scan read buffer
_db_block_temp_redo FALSE generate redo for temp blocks
_db_block_trace_protect FALSE trace buffer protect calls
_db_block_vlm_check FALSE check for mapping leaks (debugging only)
_db_block_vlm_leak_threshold 4 threshold for allowable mapping leaks
_db_blocks_per_hash_latch Number of blocks per hash latch
_db_bt_cache_only_readmostly_obj_on_roi FALSE if TRUE, ABTC only caches read mostly objects on ROI
_db_buffer_cache_percent 75 Buffer cache percent of sga
_db_cache_advice_hash_latch_multiple 16 cache advisory hash latch multiple
_db_cache_advice_max_size_factor 2 cache advisory maximum multiple of current size to similate
_db_cache_advice_sample_factor 4 cache advisory sampling factor
_db_cache_advice_sanity_check FALSE cache simulation sanity check
_db_cache_advice_size_submultiple 10 cache advisory size submultiple
_db_cache_block_read_stack_trace 0 dump short call stack for block reads
_db_cache_block_read_stack_trace_where1 0 dump short call stack for block reads just for where1
_db_cache_block_read_stack_trace_where2 0 dump short call stack for block reads just for where2
_db_cache_block_read_stack_trace_where3 0 dump short call stack for block reads just for where3
_db_cache_crx_check FALSE check for costly crx examination functions
_db_cache_max_sz 0
_db_cache_min_sga_perc 0 Make db_cache_size min this percentage of sga_target
_db_cache_miss_check_les FALSE check LEs after cache miss
_db_cache_mman_latch_check FALSE check for wait latch get under MMAN ops in kcb
_db_cache_numa_tol_enable 10 Enable/disable numa imbalance in cache granules
_db_cache_numa_tolerance 5 Allow this much numa imbalance in cache granules
_db_cache_pmem_confidence_try 0 DB Cache PMEM buffer promote attempts for greater confidence
_db_cache_pmem_promotion_touch_rate_reset_interval 300 DB Cache PMEM promotion touch rate reset interval in sec
_db_cache_pmem_promotion_touch_rate_threshold_time 30 DB Cache PMEM promotion touch rate threshold time in sec
_db_cache_pmem_touch_rate_compare_per 95 DB Cache PMEM buffer touch rate additive percentage when comparingagai
_db_cache_pmemp_len 10000 DB Cache PMEM promotion list max length
_db_cache_pre_warm TRUE Buffer Cache Pre-Warm Enabled : hidden parameter
_db_cache_process_cr_pin_max 2147483647 maximum number of cr pins a process may have
_db_cache_read_temp_as_cur_on_standby TRUE if TRUE, read temp space blocks as current on standby
_db_cache_silicon_secured_memory TRUE enable silicon secured memory
_db_cache_wait_debug 0 trace new kslwaits
_db_cache_xmem_promotion_algo_chosen 38 DB Cache Xmem/Pmem promotion algo
_db_cache_xmem_size 0 Size of extended memory data area for buffer cache DEFAULT pool
_db_change_notification_enable TRUE enable db change notification
_db_check_cell_hints FALSE
_db_disable_temp_encryption FALSE Disable Temp Encryption for Spills
_db_discard_lost_masterkey FALSE discard lost masterkey handles
_db_dump_from_disk_and_efc 0 dump contents from disk and efc
_db_dw_scan_adaptive_cooling FALSE if TRUE, enable adaptive DW scan cooling
_db_dw_scan_max_shadow_count 5 DW Scan adaptive cooling max shadow count
_db_dw_scan_obj_cooling_factor 500 DW Scan object cooling factor to cool all temperatures
_db_dw_scan_obj_cooling_interval 100 DW Scan object cooling interval in number of scans, seconds, or pct of
_db_dw_scan_obj_cooling_policy CACHE_SIZE DW scan objtect cooling policy
_db_dw_scan_obj_warming_increment 1000 DW Scan object warming increment when an object is scanned
_db_fast_obj_check FALSE enable fast object drop sanity check
_db_fast_obj_ckpt TRUE enable fast object checkpoint
_db_fast_obj_truncate TRUE enable fast object truncate
_db_file_direct_io_count 1048576 Sequential I/O buf size
_db_file_exec_read_count 128 multiblock read count for regular clients
_db_file_format_io_buffers 32 Block formatting I/O buf count
_db_file_noncontig_mblock_read_count 11 number of noncontiguous db blocks to be prefetched
_db_file_optimizer_read_count 8 multiblock read count for regular clients
_db_file_secondary_prewarm_read TRUE enable pre-warm reads to secondary data file during move/rekey
_db_flash_cache_disable_write_batchsize 4096 Flash cache disable writes processing batchsize
_db_flash_cache_encryption FALSE Set _db_flash_cache_encryption to enable flash cache encryption
_db_flash_cache_force_replenish_limit 8 Flash cache force replenish lower limit in buffers
_db_flash_cache_hint_to_cell_flash_cache DDL whether db flash cache should pass hint to cell flash cache
_db_flash_cache_keep_limit 80 Flash cache keep buffer upper limit in percentage
_db_flash_cache_max_latency 400 Flash cache maximum latency allowed in 10 milliseconds
_db_flash_cache_max_outstanding_writes 32 Flash cache maximum outstanding writes allowed
_db_flash_cache_max_read_retry 10 Flash cache max read retry
_db_flash_cache_max_slow_io 3 Flash cache maximum slow io allowed
_db_flash_cache_slow_io_adjustment_interval 3600 Decrement interval
_db_flash_cache_write_limit 6 Flash cache write buffer upper limit in percentage
_db_flashback_iobuf_size 1 Flashback IO Buffer Size
_db_flashback_log_min_size 16777216 Minimum flashback database log size in bytes
_db_flashback_log_min_total_space 0 Minimum flashback database log total space in bytes
_db_flashback_num_iobuf 64 Flashback Number of IO buffers
_db_full_caching TRUE enable full db implicit caching
_db_full_db_cache_diff_pct 5 Cache at least this % larger than DB size for full db caching
_db_generate_dummy_masterkey FALSE if TRUE, use old havior and generate dummy master key
_db_handles 3200 System-wide simultaneous buffer operations
_db_handles_cached 10 Buffer handles cached each process
_db_hot_block_tracking FALSE track hot blocks for hash latch contention
_db_imoltp_hashidx_force_nonctg 0 kcbw imoltp hash index force non contig granules
_db_index_block_checking TRUE index block checking override parameter
_db_initial_cachesize_create_mb 256 size of cache created at startup
_db_keep_cache_xmem_size 0 Size of KEEP buffer pool for standard block size buffers on extended m
_db_l2_tracing 0 flash cache debug tracing
_db_large_dirty_queue 25 Number of buffers which force dirty queue to be written
_db_link_sources_tracking TRUE enable/disable database link source tracking
_db_lost_write_checking 2 Enable scn based lost write detection mechanism
_db_lost_write_corrupt_block FALSE allow corruption for lost write
_db_lost_write_protect_timer_interval_secs 60 Lost write protection periodic tasks interval in seconds
_db_lost_write_tracing FALSE Enable _db_lost_write_checking tracing
_db_minimum_auxsize_percent 0 min percent of aux buffers to be maintained before using aux2
_db_move_hot_buffers_for_granule_eviction TRUE if TRUE, enable movement of hot buffers for granule eviction
_db_mttr_advice ON MTTR advisory
_db_mttr_partitions 0 number of partitions for MTTR advisory
_db_mttr_sample_factor 64 MTTR simulation sampling factor
_db_mttr_sim_target MTTR simulation targets
_db_mttr_sim_trace_size 256 MTTR simulation trace size
_db_mttr_trace_to_alert FALSE dump trace entries to alert file
_db_noarch_disble_optim FALSE Image redo logging (NOARCHIVEMODE)
_db_num_evict_waitevents 16384 number of evict wait events
_db_num_gsm 0 database number in gsm dbpool
_db_nvm_promotion_deferred_tchcnt 195 touch count threshold which allows deferred background based nvm buffe
_db_obj_cnt_for_file_ckpt 1000000 object count after that go for file checkpoint
_db_obj_enable_ksr TRUE enable ksr in object checkpoint/reuse
_db_obj_to_file_for_file_ckpt 10000 object to file ratio after that go for file checkpoint
_db_open_links 0 Max allowed open dblinks for a pdb.
_db_percent_hot_default 50 Percent of default buffer pool considered hot
_db_percent_hot_keep 0 Percent of keep buffer pool considered hot
_db_percent_hot_recycle 0 Percent of recycle buffer pool considered hot
_db_percpu_create_cachesize 2 size of cache created per cpu in deferred cache create
_db_pmem_auto_resize_interval 10 PMEM auto resize interval in minutes
_db_pmem_direct_map_size 0 Size of direct mappable PMEM buffer cache
_db_prefetch_histogram_statistics FALSE maintain prefetch histogram statistics in x$kcbprfhs
_db_recovery_temporal_file_dest default database recovery temporal file location
_db_recycle_cache_xmem_size 0 Size of Recycle buffer pool for standard block size buffers on extende
_db_replay_security_config Database Replay Security Configuration
_db_required_percent_fairshare_usage 10 percent of fairshare a processor group should always use
_db_row_overlap_checking TRUE row overlap checking override parameter for data/index blocks
_db_shadow_lost_write_protect NOT_SET alter shadow lost write detection for PDB
_db_todefer_cache_create TRUE buffer cache deferred create
_db_writer_chunk_writes 0 Number of writes DBWR should wait for
_db_writer_coalesce_area_size 15597376 Size of memory allocated to dbwriter for coalescing writes
_db_writer_coalesce_encrypted_buffers TRUE Coalecsing for encrypted buffers
_db_writer_coalesce_write_limit 131072 Limit on size of coalesced write
_db_writer_flush_imu TRUE If FALSE, DBWR will not downgrade IMU txns for AGING
_db_writer_histogram_statistics FALSE maintain dbwr histogram statistics in x$kcbbhs
_db_writer_max_writes 0 Max number of outstanding DB Writer IOs
_db_writer_nomemcopy_coalesce FALSE Enable DBWR no-memcopy coalescing
_db_writer_verify_writes FALSE Enable lost write detection mechanism
_db_xmem_cache_encryption TRUE Set _db_xmem_cache_encryption to enable XMEM cache encryption
_db_xmem_hot_switch_criteria 195 Xmem/Pmem buffer touch count which makes this buffer candidate of swit
_dbcomp_maxdump 100 Maximum # of dumped blocks per datafile
_dbcomp_msg_ver 1 database block compare message version
_dbfs_modify_implicit_fetch TRUE DBFS Link allows implicit fetch on modify - only on SecureFiles
_dbfs_symlink_path_prefix TRUE disallow symbolic link creation in dbfs outside path_prefix
_dbg_proc_startup FALSE debug process startup
_dbg_scan 0 generic scan debug
_dblink_drain_method REQEND DBLink drain method
_dblink_healthcheck FALSE Enable check for health of database link
_dblink_internal_gateway FALSE database link goes through Internal Gateway
_dblink_multiple_address_transform FALSE Enable multiple address transformation
_dblink_rce_dns_proxy FALSE Enable RCE DNS Proxy for database link
_dblink_topology TRUE Enable topology-driven database links
_dbms_shared_pool_allow_hot_oso TRUE restrict markhot or unmarkhot
_dbms_sql_security_level 1 Security level in DBMS_SQL
_dbms_vector_trace FALSE dbms_vector tracing enable
_dbmsumf$$1x UMF Configuration
_dbmsumf$$2x UMF Configuration
_dbmsumf$$3x UMF Configuration
_dbmsumf$$nn UMF Configuration
_dbmsumf$$p UMF Configuration
_dbnest_enable NONE dbNest enable
_dbnest_pdb_fs_conf PDB Filesystem configuration
_dbnest_pdb_fs_type DEFAULT PDB FS Type
_dbnest_pdb_network_ip PDB network ip configuration
_dbnest_pdb_scm_conf PDB SCM configuration
_dbnest_pdb_scm_level STRICT1 PDB SCM Level
_dbnest_resource_opts 0 dbNest - resource options
_dbnest_skip_fed_root TRUE Fed root is skipped so CDB nest is root of all pdbs
_dbnest_stage_dir Staging directory configuration
_dbop_enabled 1 Any positive number enables automatic DBOP monitoring. 0 is disabled
_dbopen_breakpoint none ALTER DATABASE OPEN codepath breakpoint
_dbpool_name gsm database pool name
_dbreplay_feature_control Database Replay Feature Control
_dbreplay_mpk_key Database Replay Package Key
_dbrm_dynamic_threshold 17302504 DBRM dynamic threshold setting
_dbrm_num_runnable_list 0 Resource Manager number of runnable list per NUMA node
_dbrm_quantum DBRM quantum
_dbrm_runchk 30000 DBRM kskrunstatechk thresholds
_dbrm_short_wait_us 300 Resource Manager short wait length
_dbwr_async_io TRUE Enable dbwriter asynchronous writes
_dbwr_flashlock_shrink_limit 0 limit to shrink le to flash lock per dbwr iteration
_dbwr_nowrite_assert_interval 7200 dbwriter assert interval after no write seconds
_dbwr_nwp_assert_interval 1800 dbwriter no write permission assert interval after no write seconds
_dbwr_scan_interval 300 dbwriter scan interval
_dbwr_stall_write_detection_interval 900 dbwriter stall write detection interval
_dbwr_tracing 0 Enable dbwriter tracing
_dd_validate_remote_locks TRUE GES deadlock detection validate remote locks
_dde_flood_control_init TRUE Initialize Flood Control at database open
_ddlapply_enable FALSE DDL VIA APPLY Enable
_dead_process_scan_interval 60 PMON dead process scan interval (in seconds)
_deadlock_diagnostic_level 2 automatic deadlock resolution diagnostics level
_deadlock_record_to_alert_log TRUE record resolved deadlocks to the alert log
_deadlock_resolution_incidents_always FALSE create incidents when resolving any deadlock?
_deadlock_resolution_incidents_enabled TRUE create incidents during deadlock resolution
_deadlock_resolution_level 1 automatic deadlock resolution level
_deadlock_resolution_min_wait_timeout_secs 60 the minimum wait timeout required for deadlock resolution
_deadlock_resolution_signal_process_thresh_secs 60 the amount of time given to process a deadlock resolution signal
_debug_segment_size 50 Debug-log segment size in MBs (1024*1024)
_debug_segment_textfile TRUE Debug-log text-file also to be segmented
_debug_segments_max 20 Debug-log max segments to retain, 0 for unlimited
_default_encrypt_alg 0 default encryption algorithm
_default_ini_trans_index 0 Default value of INI_TRANS enforced by DWCS lockdown for indexes
_default_ini_trans_table 0 Default value of INI_TRANS enforced by DWCS lockdown for tables
_default_non_equality_sel_check TRUE sanity check on default selectivity for like/range predicate
_default_oracle_fs_type ofs default file system type for an oracle file system
_default_pct_free 0 Default value of PCT_FREE enforced by DWCS lockdown
_default_pdb_filecopy_dop 0 default pdb file copy degree of parallelism
_default_service 1 Run default service in various modes
_defer_eor_orl_arch_for_so TRUE defer EOR ORL archival for switchover
_defer_log_boundary_ckpt TRUE defer media recovery checkpoint at log boundary
_defer_log_count 100 Number of log boundaries media recovery checkpoint lags behind
_defer_rcv_during_sw_to_sby FALSE Defer recovery during switchover to standby
_defer_rcv_pdb_attach TRUE Defer PDB domain attach in instance recovery
_defer_rewrap_controlfile_key_history FALSE if TRUE, defer rewrap control file TS keys under next PDB open
_defer_sga_alloc_chunk_size 1073741824 Chunk size for defer sga allocation
_defer_sga_enabled FALSE Enable deferred shared memory allocation for SGA
_defer_sga_min_spsz_at_startup 53687091200 Minimum shared pool size at startup with deferred sga enabled
_defer_sga_min_total_defer_segs_sz 107374182400 Minimum total deferred segs size for defer sga allocation
_defer_sga_test_alloc_intv 0 SA** sleeps for N secs before allocating a deferred segment
_defer_while_patching 0 Session should be deferred if patching is secheduled
_deferred_constant_folding_mode DEFAULT Deferred constant folding mode
_deferred_log_dest_is_valid TRUE consider deferred log dest as valid for log deletion (TRUE/FALSE)
_deferred_seg_in_seed TRUE Enable Deferred Segment Creation in Seed
_del_qsvc_last_bufsub_drop FALSE delete queue service on last buffered subscriber drop
_delay_index_maintain TRUE delays index maintenance until after MV is refreshed
_delete_ghost_data FALSE Test delete ghost data
_deq_execute_reset_time 30 deq execute reset time
_deq_ht_child_latches 8 deq ht child latches
_deq_ht_max_elements 100000 deq ht max elements
_deq_large_txn_size 25000 deq large txn size
_deq_log_array_size 10000 deq log array size
_deq_max_fetch_count 10 deq max fetch count
_deq_maxwait_time 0 Change wait times between dequeue calls
_desired_readmem_rate 90 The desired percentage of redo reading from memory
_df_hist_offl_override FALSE Allow update of keep offline bit in datafile history record
_dg_broker_trace_level data guard broker trace level
_dg_cf_check_timer 15 Data Guard controlfile check timer
_dg_corrupt_redo_log 0 Corrupt redo log validation during archivals
_dgb_dgpdb_appst DGPDBs with apply state off
_dgpdb_cf_retention 10080 number of minutes to keep the control file copy made during role chang
_dgpdb_file_name_convert datafile name convert patterns and strings for per PDB standby
_dgpdb_pcf_cf_apply_time 600 DGPDB pcf to cf mark apply time in seconds
_dgpdb_pcf_cf_sync_time 43200 DGPDB pcf to cf sync time in seconds
_dgpdb_rc_notify_check_interval 5 number of minutes between attempts to send role change notifications t
_dgpdb_standby_controlfile_name dgpdb_stdby_cf_pdbid a name template with three %u's for DGPDB standby controlfile
_%u_%u_%u.cf
_diag_adl_dyn_alloc TRUE Enable Diag Alert Dynamic Allocation
_diag_adr_auto_purge TRUE Enable/disable ADR MMON Auto Purging
_diag_adr_enabled TRUE Parameter to enable/disable Diag ADR
_diag_adr_test_param 0 Test parameter for Diagnosability
_diag_adr_trace_dest /u01/app/oracle/diag diagnosability trace directory path
/rdbms/cdb26ai/cdb26
ai/trace
_diag_alert_log_enable_attention_prefix TRUE Enable/Disable attention prefix for alert log entries
_diag_alert_root_annotate FALSE Enable annotation for alert log entries from root
_diag_arb_before_kill FALSE dump diagnostics before killing unresponsive ARBs
_diag_attn_log_enable_fc TRUE Enable/Disable attention log flood control
_diag_attn_log_format_error Attention Log Error Entry format
_diag_attn_log_format_standard Attention Log Standard Entry format
_diag_backward_compat TRUE Backward Compatibility for Diagnosability
_diag_cc_enabled TRUE Parameter to enable/disable Diag Call Context
_diag_cdb_logging short Format for CDB Annotation
_diag_conf_cap_enabled TRUE Parameter to enable/disable Diag Configuration Capture
_diag_crashdump_level 10 parameter for systemstate dump level, used by DIAG during crash
_diag_css_lock_wait_retry_count 100 DIAG process kjzm lock wait retry count
_diag_css_lock_wait_timeout 5 DIAG process kjzm lock wait timeout centisecs
_diag_daemon TRUE start DIAG daemon
_diag_dd_global_blockers_dump FALSE if TRUE enables Global blockers dump
_diag_dde_async_age_limit 300 diag dde async actions: message age limit (in seconds)
_diag_dde_async_cputime_limit 300 diag dde async actions: action cputime limit (in seconds)
_diag_dde_async_mode 1 diag dde async actions: dispatch mode
_diag_dde_async_msg_capacity 1024 diag dde async actions: message buffer capacity
_diag_dde_async_msgs 50 diag dde async actions: number of preallocated message buffers
_diag_dde_async_process_rate 5 diag dde async actions: message processing rate - per loop
_diag_dde_async_runtime_limit 900 diag dde async actions: action runtime limit (in seconds)
_diag_dde_async_slaves 5 diag dde async actions: max number of concurrent slave processes
_diag_dde_enabled TRUE enable DDE handling of critical errors
_diag_dde_fc_enabled TRUE Parameter to enable/disable Diag Flood Control
_diag_dde_fc_implicit_time 0 Override Implicit Error Flood Control time parameter
_diag_dde_fc_macro_time 0 Override Macro Error Flood Control time parameter
_diag_dde_inc_proc_delay 1 The minimum delay between two MMON incident sweeps (minutes)
_diag_deadlock_detection_enabled TRUE Deadlock detection enabled in diag
_diag_diagnostics TRUE Turn off diag diagnostics
_diag_dump_request_debug_level 1 DIAG dump request debug level (0-2)
_diag_dump_timeout 30 timeout parameter for SYNC dump
_diag_enable_startup_events FALSE enable events in instance startup notifiers
_diag_hang_analyze_default_dump_level 0 Diag Hang Analyze default dump level
_diag_hang_analyze_elapsed_time_limit 1800 Diag Hang Analyze elapsed time limit in seconds
_diag_hm_rc_enabled TRUE Parameter to enable/disable Diag HM Reactive Checks
_diag_hm_tc_enabled FALSE Parameter to enable/disable Diag HM Test(dummy) Checks
_diag_kjzcmsg_limit 8400000 If non-zero value, upper limit of allocation of kjzcmsg in bytes
_diag_kjzcmsg_send_time_out 600000 Time limit for sends to wait until they are cancelled
_diag_large_packets TRUE DIA* large packets support
_diag_patch_cap_enabled TRUE Parameter to enable/disable Diag Patch Configuration Capture
_diag_pdb_control 0 DIAG PDB Space Management Control Parameter
_diag_pdb_purge_target 90 Controls target percentage for ADR PDB Auto Purge Operation
_diag_pdb_purge_threshold 97 Controls threshold for ADR PDB Auto Purge Operation
_diag_proc_enabled TRUE enable hung process diagnostic API
_diag_proc_max_time_ms 30000 hung process diagnostic API max wait time in milliseconds
_diag_proc_stack_capture_type 1 hung process diagnostic API stack capture type
_diag_test_seg_reinc_mode FALSE Sets trace segmentation to be in reincarnation mode
_diag_uts_control 0 UTS control parameter
_diag_verbose_error_on_init 0 Allow verbose error tracing on diag init
_diag_xm_enabled FALSE If TRUE, DIAG allows message exchanges across DB/ASM boundary
_dictionary_debug_mode 0 enable debug for the dictionary area
_dimension_skip_null TRUE control dimension skip when null feature
_direct_io_skip_cur_slot_on_error TRUE Skip current slot on error
_direct_io_slots 0 number of slots for direct path I/O
_direct_io_via_mapped_pmem TRUE if TRUE, direct path I/O will attempt to memory map files on PMEM
_direct_io_wslots 0 number of write slots for direct path I/O
_direct_path_insert_features 0 disable direct path insert features
_direct_read_decision_statistics_driven TRUE enable direct read decision based on optimizer statistics
_directed_diag_cputime_limit 0 cputime limit for Debug Directed Diagnostics
_directed_diag_enable TRUE Enable Directed Diagnostics
_directed_diag_runtime_limit 600 runtime limit for Debug Directed Diagnostics
_directed_diag_trace_size_limit 104857600 Trace size limit for Debug Directed Diagnostics
_dirty_appliance_mode FALSE Enable appliance mode even on non-appliance
_disable_12751 FALSE disable policy timeout error (ORA-12751)
_disable_12cbigfile FALSE DIsable Storing ILM Statistics in 12cBigFiles
_disable_active_influx_move FALSE disable active influx move during parallel media recovery
_disable_actualization_for_grant FALSE disable actualization of editioned objects on grant
_disable_adaptive_shrunk_aggregation FALSE adaptive shrunk aggregation
_disable_adp_adj_buf_check FALSE No adjacent buffer check for ADP
_disable_appliance_check FALSE Disable appliance-specific code
_disable_appliance_partnering FALSE Disable appliance partnering algorithms
_disable_asm_audit_feat 0 disable ASM audit features
_disable_audit_data_share FALSE Disable Data Share policy
_disable_autotune_gtx FALSE disable autotune global transaction background processes
_disable_block_checking FALSE disable block checking at the session level
_disable_block_corruption_track FALSE disable block corruption tracking
_disable_cdb_view_rc_invalidation FALSE disable Result Cache invalidation for CDB View results
_disable_cell_optimized_backups FALSE disable cell optimized backups
_disable_chunkmv_optimize_exascale FALSE disable chunk move exascale optimization
_disable_con_recurse_queuing TRUE disable parallel statement queuing for containers() recursive SQL
_disable_cpu_check FALSE disable cpu_count check
_disable_cross_shard_row_movement FALSE disable cross shard row movement
_disable_cursor_sharing FALSE disable cursor sharing
_disable_data_block_check_after_decrypt FALSE if TRUE, disable data block check after decryption
_disable_datalayer_sampling FALSE disable datalayer sampling
_disable_dblink_optim TRUE disable intra CDB dblink optimizations
_disable_def_seg_update 0 Disable deferred seg$ update
_disable_destructive_patch_operation TRUE Is destructive operation allowed in a patch
_disable_dict_check_pdb_open FALSE disable PDB pseudo open for dictionary check purpose
_disable_directory_link_check FALSE Disable directory link checking
_disable_duplex_link TRUE Turn off connection duplexing
_disable_duplicate_service_warning FALSE disable listener warning for duplicate service
_disable_fast_aggregation FALSE fast aggregation
_disable_fast_validate FALSE disable PL/SQL fast validation
_disable_fastopen FALSE Do Not Use Fastopen
_disable_fba_qrw 0 disable flashback archiver query rewrite
_disable_fba_wpr 0 disable flashback archiver wait for prepared transactions
_disable_file_locks FALSE disable file locks for control, data, redo log files
_disable_file_resize_logging FALSE disable file resize logging to alert log
_disable_flashback_data_archive FALSE disable pdb-level flashback archiving
_disable_flashback_recyclebin_opt TRUE Don't use the Flashback Recyclebin optimization
_disable_flashback_wait_callback FALSE Disable flashback wait callback
_disable_foreign_scn_adjust FALSE Disable foreign SCN adjustment
_disable_function_based_index FALSE disable function-based index matching
_disable_gvaq_cache FALSE Disable cache
_disable_hcc_array_insert FALSE TRUE - enable conventional inserts into HCC CUs
_disable_health_check FALSE Disable Health Check
_disable_highres_ticks TRUE disable high-res tick counter
_disable_hybrid_tg FALSE Disable Hybrid Transaction Guard
_disable_ilm_internal FALSE Force disable internal ilm stats and drop ilm segment
_disable_image_check FALSE Disable Oracle executable image checking
_disable_implicit_row_movement FALSE disable implicit row movement
_disable_incremental_checkpoints FALSE Disable incremental checkpoints for thread recovery
_disable_incremental_recovery_ckpt FALSE Disable incremental recovery checkpoint mechanism
_disable_index_block_prefetching FALSE disable index block prefetching
_disable_index_pk_using_nonunique FALSE disable sys tbs index primary key using non unique index
_disable_inheritpriv_grant_public FALSE Disable inherit privilege grant to PUBLIC for newly created users
_disable_initial_block_compression FALSE disable initial block compression
_disable_instance_params_check FALSE disable instance type check for ksp
_disable_interface_checking FALSE disable interface checking at startup
_disable_kcb_flashback_blocknew_opt FALSE Disable KCB flashback block new optimization
_disable_kcbhxor_osd FALSE disable kcbh(c)xor OSD functionality
_disable_kcbl_flashback_blocknew_opt FALSE Disable KCBL flashback block new optimization
_disable_kgghshcrc32_osd FALSE disable kgghshcrc32chk OSD functionality
_disable_last_successful_login_time FALSE Disable writing Last Successful Login Time to USER$
_disable_last_successful_login_time_unlimited_iat FALSE Disable writing LSLT for users with Unlimited IAT
_disable_logging FALSE Disable logging
_disable_lostwrite_tablespace_alerts FALSE disable tablespace alerts for LOSTWRITE tablespaces
_disable_mandatory_profile_for_import FALSE Disable Mandatory Profile check for IMPDP invocation inside a PDB
_disable_mandatory_profile_onclone FALSE Disable Mandatory Profile check on clone of a PDB
_disable_marking_noops FALSE Don't mark any captured statements as no-ops.
_disable_metrics_group 0 Disable Metrics Group (or all Metrics Groups)
_disable_modsvc_refresh disable modify service cache refresh
_disable_mt_rfs FALSE disable MT RFS server
_disable_mt_rfs_tracking FALSE disable MT RFS tracking
_disable_multiple_block_sizes FALSE disable multiple block size support (for debugging)
_disable_odm FALSE disable odm feature
_disable_oradebug_commands restricted disable execution of certain categories of oradebug commands
_disable_orphan_pdb_recovery FALSE Disable PDB PITR/FB to orphan PDB incarnation
_disable_os_time_page FALSE disable OS time page
_disable_parallel_conventional_load FALSE Disable parallel conventional loads
_disable_pdb_space_check FALSE Disable pdb storage usage check in the session
_disable_primary_bitmap_switch TRUE disable primary bitmap switch
_disable_privilege_cache_in_auth_table FALSE disables caching privileges used in auth table
_disable_ptl_replay FALSE Is PTL replay disabled during Application Sync
_disable_pushmap FALSE Do Not Use Push Full Extent Map
_disable_read_only_open_dict_check FALSE Disable read-only open dictionary check
_disable_rebalance_space_check FALSE disable space usage checks for storage reconfiguration
_disable_recovery_read_skip FALSE Disable the read optimization during media recovery
_disable_restricted_rac_rolling 0 Disable 2 Phase RAC Rolling Patch feature
_disable_rolling_patch 0 Disable Rolling Patch Feature
_disable_row_movement_auto_rollback FALSE disable row movement auto rollback
_disable_sample_io_optim FALSE disable row sampling IO optimization
_disable_savepoint_reset FALSE disable the fix for bug 1402161
_disable_secure_sga_check TRUE disable SELinux label checking files used for SGA on hugetlbfs
_disable_selftune_checkpointing FALSE Disable self-tune checkpointing
_disable_sensitive_internal FALSE disable internal SQL from showing sensitive information
_disable_sessionless_transaction FALSE Disable Sessionless Transactions
_disable_sga_filedel FALSE disable deletion of files used for SGA
_disable_storage_type FALSE Disable storage type checks
_disable_streams_diagnostics 0 streams diagnostics
_disable_streams_pool_auto_tuning FALSE disable streams pool auto tuning
_disable_sun_rsm TRUE Disable IPC OSD support for Sun RSMAPI
_disable_sv_shared_mode FALSE Force exclusive instance lock acquire for ordered sequences
_disable_system_state 4294967294 disable system state dump
_disable_system_state_wait_samples FALSE Disable system state dump - wait samples
_disable_system_tablespaces_enc_enforcement FALSE if TRUE, disable system tablespaces encryption enforcement
_disable_temp_tablespace_alerts FALSE disable tablespace alerts for TEMPORARY tablespaces
_disable_thread_internal_disable FALSE Disable thread internal disable feature
_disable_txn_alert 0 disable txn layer alert
_disable_uix_pred_push FALSE disable UIX predicate push
_disable_undo_tablespace_alerts FALSE disable tablespace alerts for UNDO tablespaces
_disable_wait_state Disable wait state
_disallow_osu_edition_obj_in_pdb TRUE disallow oracle supplied edition objects in pdb
_discard_cmn_ddl_in_pdb_err FALSE Discard error when Common DDL is attempted in PDB
_discrete_transactions_enabled FALSE enable OLTP mode
_disk_sector_size_override FALSE if TRUE, OSD sector size could be overridden
_diskmon_pipe_name DiSKMon skgznp pipe name
_disksize_binary_search FALSE if set, perform binary search to get disk size if IOCTL fails
_dispatcher_listen_on_vip FALSE Determines if dispatcher listens on VIP if no HOST is supplied
_dispatcher_rate_scale scale to display rate statistic (100ths of a second)
_dispatcher_rate_ttl time-to-live for rate statistic (100ths of a second)
_distinct_agg_optimization_gsets CHOOSE Use Distinct Aggregate Optimization for Grouping Sets
_distinct_view_unnesting FALSE enables unnesting of in subquery into distinct view
_distributed_recovery_connection_hold_time 200 number of seconds RECO holds outbound connections open
_disttxn_for_queries TRUE remote queries start distributed transaction
_dixinv_flags 0 flags for invalidation of dependent objects during DROP INDEX
_dlm_cache_warmup_slaves 2 Number of DLM cache warm up slaves
_dlm_smart_cpu_utilization_threshold 70 Smart Connection Rebalance Host Level CPU Utilization Threshold (in pe
_dlm_stats_collect 1 DLM statistics collection(0 = disable, 1 = enable (default))
_dlm_stats_collect_du_limit 3000 DLM statistics collection disk updates per slot
_dlm_stats_collect_mode 14 DLM statistics collection mode
_dlm_stats_collect_slot_interval 60 DLM statistics collection slot interval (in seconds)
_dlmtrace Trace string of global enqueue type(s)
_dm_dmf_details_compatibility 12.1.0 set dm dmf details compatibility version
_dm_enable_legacy_dmf_output_types FALSE revert dmf output types to pre-12.1.0.1
_dm_inmemory_threshold 1000000 In-memory cardinality threshold
_dm_max_chunk_size 2000 Data Mining Max Chunk Size
_dm_max_shared_pool_pct 5 max percentage of the shared pool to use for a mining model
_dml_batch_error_limit 0 number or error handles allocated for DML in batch mode
_dml_frequency_tracking FALSE Control DML frequency tracking
_dml_frequency_tracking_advance TRUE Control automatic advance and broadcast of DML frequencies
_dml_frequency_tracking_slot_time 15 Time length of each slot for DML frequency tracking
_dml_frequency_tracking_slots 4 Number of slots to use for DML frequency tracking
_dml_monitoring_enabled TRUE enable modification monitoring
_dmm_auto_max_features 500 Auto Max Features
_dmm_blas_library Control which BLAS/LAPACK dynamic library to load
_dmm_cnt_arr_size_threshold 500000 Counts Array Size Threshold
_dmm_details_filter_weight 1 Filter details based on weight
_dmm_disable_onnx 0 Disable ONNX runtime
_dmm_force_treetop_merge 0 Force Treetop Merge
_dmm_inc_cholesky_rows 50000 Incomplete Cholesky number of rows
_dmm_inmemory_limit 20 Max percentage of PGA aggregate limit usable for inmemory models
_dmm_ipp_cutoff 0 Intra-Partition Parallel size cutoff
_dmm_kmean_dense_threshold 500 Kmean densify threshold
_dmm_max_memory_size 1000000 Maximum Memory Size
_dmm_memory_size 64000000 Memory Size
_dmm_nobin_threshold 200 No Binning Row Count Threshold
_dmm_onnx_cache_minmodsz 10485760 ONNX session cache min model size
_dmm_onnx_cache_timeout 120000 ONNX session cache time out
_dmm_onnx_large_model_size 419430400 ONNX large model size
_dmm_onnx_max_image_size 20971520 ONNX maximum image size (MB)
_dmm_onnx_max_num_inmemory_models 16 ONNX maximum number of inmemory models
_dmm_pga_load_threshold 3 Model size less than threshold are loaded into PGA
_dmm_reduction_rate 4 Reduction rate in reduction tree
_dmm_sample_lower_threshold 10000 Minimum Sample Size
_dmm_sample_upper_threshold 500000 Maximum Sample Size
_dmm_ser_test 0 Stress testing for serialized models
_dmm_shared_memory_size 995727769 Maximum memory usage for inmemory models
_dmm_ts_lapack 1 Enable usage of BLAS/LAPACK for Tall Skinny SVD
_dmm_xgboost_max_memory 1000000000 xgboost maximum memory
_dmsqr_qr_chunk_rows 10000 QR maximum chunk rows
_dnfs_rdma_enable rman Enable dNFS RDMA transfers
_dnfs_rdma_max 1048576 Maximum size of dNFS RDMA transfer
_dnfs_rdma_min 8192 Minimum size of dNFS RDMA transfer
_domain_index_batch_size 2000 maximum number of rows from one call to domain index fetch routine
_domain_index_dml_batch_size 200 maximum number of rows for one call to domain index dml routines
_dp_force_length_semantics NONE Force nls length semantics
_dra_bmr_number_threshold 1000 Maximum number of BMRs that can be done to a file
_dra_bmr_percent_threshold 10 Maximum percentage of blocks in a file that can be BMR-ed
_dra_enable_offline_dictionary FALSE Enable the periodic creation of the offline dictionary for DRA
_drm_parallel_freeze TRUE if TRUE enables parallel drm freeze
_drop_flashback_logical_operations_enq FALSE Drop logical operations enqueue immediately during flashback marker ge
_drop_stat_segment 0 drop ilm statistics segment
_drop_table_granule 256 drop_table_granule
_drop_table_optimization_enabled TRUE reduce SGA memory use during drop of a partitioned table
_drop_tablespace_objects 0 GDR: drop all tablespace objects
_ds_enable_auto_txn FALSE Dynamic Sampling Service Autonomous Transaction control parameter
_ds_enable_view_sampling TRUE Use sampling for views in Dynamic Sampling
_ds_iocount_iosize 6553664 Dynamic Sampling Service defaults: #IOs and IO Size
_ds_parse_model 2 Dynamic Sampling Service Parse Model control parameter
_ds_progressive_initial_samples 2 Number of initial samples used for progressive sampling
_ds_progressive_no_matches_min_sample_size 50 Minimum sample size at which progressive sampling report no match
_ds_sampling_method PROGRESSIVE Dynamic sampling method used
_ds_xt_split_count 1 Dynamic Sampling Service: split count for external tables
_dsc_feature_level 0 controls the feature level for deferred segment creation
_dskm_health_check_cnt 20 DiSKMon health check counter
_dskm_single_instance FALSE DSKM and Diskmon operating in Single Instance mode
_dss_cache_flush FALSE enable full cache flush for parallel execution
_dss_cache_flush_threshold 1 threshold when thread ckpt considered over obj ckpt
_dtree_area_size 131072 size of Decision Tree Classification work area
_dtree_binning_enabled TRUE Decision Tree Binning Enabled
_dtree_max_surrogates 1 maximum number of surrogates
_dtree_pruning_enabled TRUE Decision Tree Pruning Enabled
_duality_view_enable_bulk_load FALSE If true, bulk loading will be enabled for inserts
_duality_view_etag_required FALSE If true, etag will be required in input for updates
_dummy_instance FALSE dummy instance started by RMAN
_dump_10261_level 0 Dump level for event 10261, 1=>minimal dump 2=>top pga dump
_dump_common_subexpressions FALSE dump common subexpressions
_dump_connect_by_loop_data FALSE dump connect by loop error message into trc file
_dump_cursor_heap_sizes FALSE dump comp/exec heap sizes to tryace file
_dump_diag_audrec_fail_tab FALSE Dump diagnostics on failure of audit record write to table
_dump_interval_limit 120 trace dump time interval limit (in seconds)
_dump_max_limit 5 max number of dump within dump interval
_dump_qbc_tree 0 dump top level query parse tree to trace
_dump_rcvr_ipc TRUE if TRUE enables IPC dump at instance eviction time
_dump_scheduler_inmemory_trace_on_error TRUE autodump scheduler imt on error
_dump_scheduler_inmemory_trace_on_timeout TRUE autodump scheduler imt on timeout
_dump_scn_increment_stack Dumps scn increment stack per session
_dump_system_state_scope local scope of sysstate dump during instance termination
_dump_trace_scope global scope of trace dump during a process crash
_duplicate_database_key_to_omts TRUE if TRUE, duplicate DB key to OMTS if they do not have a key
_duplicated_table_complete_refresh_percent 50 percent threshold for duplicated table to do complete refresh
_dupt_noupdate 0 disable duplicated table updates
_dynamic_hash_bucket_array TRUE dynamic hash bucket array
_dynamic_processes_force_timeout 6 dynamic process force timeout
_dynamic_processes_max_oom_timeout 300 dynamic process max timeout for out of memory
_dynamic_processes_wait_timeout 100 dynamic process wait timeout for new process
_dynamic_rls_policies TRUE rls policies are dynamic
_dynamic_sequence_cache TRUE Enable/disable sequence dynamic cache sizing
_dynamic_sequence_cache_max 1000000 Sequence dynamic cache maximum size
_dynamic_sequence_cache_scale 10 Max scale factor for dynamic sequence cache size
_dynamic_sessions_force_timeout 30 dynamic session force timeout
_dynamic_sessions_inc_count 1000 dynamic session increment count
_dynamic_sessions_max_oom_timeout 300 dynamic session max timeout for out of memory
_dynamic_sessions_min_force_timeout 5 dynamic min session force timeout
_dynamic_sessions_wait_timeout 100 dynamic session wait timeout for new session
_dynamic_share_range_factor 2 dynamic share range factor
_dynamic_stats_threshold 30 delay threshold (in seconds) between sending statistics messages
_early_flush_delta 0 SCN delta to trigger early log flush
_edition_cleanup FALSE cleanup non-existent and unusable objects in editions name check
_edition_enable_oracle_users Edition enable Oracle supplied users
_eighteenth_spare_parameter eighteenth spare parameter - integer
_eighteenth_spare_pdb_parameter eighteenth spare pdb parameter - integer
_eighth_spare_parameter eighth spare parameter - integer
_eighth_spare_pdb_parameter eighth spare pdb parameter - integer
_eightieth_spare_parameter eightieth spare parameter - integer
_eighty-eighth_spare_parameter eighty-eighth spare parameter - string
_eighty-fifth_spare_parameter eighty-fifth spare parameter - string
_eighty-first_spare_parameter eighty-first spare parameter - string
_eighty-fourth_spare_parameter eighty-fourth spare parameter - string
_eighty-ninth_spare_parameter eighty-ninth spare parameter - string
_eighty-second_spare_parameter eighty-second spare parameter - string
_eighty-seventh_spare_parameter eighty-seventh spare parameter - string
_eighty-sixth_spare_parameter eighty-sixth spare parameter - string
_eighty-third_spare_parameter eighty-third spare parameter - string
_elastic_pool_leader FALSE Enable Elastic Pool Leader PDB functionality
_elastic_pool_member FALSE Enable Elastic Pool Member PDB
_eleventh_spare_parameter eleventh spare parameter - integer
_eleventh_spare_pdb_parameter eleventh spare pdb parameter - integer
_eliminate_common_subexpr TRUE enables elimination of common sub-expressions
_emon_max_active_connections 256 maximum open connections to clients per emon
_emon_outbound_connect_timeout 7200000 timeout for completing connection set up to clients
_emon_pool_inc 4 increment in EMON slaves per pool type
_emon_pool_max 16 maximum number of EMON slaves per pool type
_emon_pool_min 4 minimum number of EMON slaves per pool type
_emon_regular_ntfn_slaves 4 number of EMON slaves doing regular database notifications
_emon_send_timeout 7200000 send timeout after which the client is unregistered
_emx_control 0 EM Express control (internal use only)
_emx_max_sessions 128 Maximum number of sessions in the EM Express cache
_emx_session_timeout 3600 Session timeout (sec) in the EM Express cache
_ena_storage_lmt DEFAULT Enable storage clause for LMT
_enable_12g_bft TRUE enable 12g bigfile tablespace
_enable_942_table_name TRUE enable printing of table name in 942 error message
_enable_Front_End_View_Optimization 1 enable front end view optimization
_enable_NUMA_interleave TRUE Enable NUMA interleave mode
_enable_NUMA_optimization FALSE Enable NUMA specific optimizations
_enable_NUMA_support FALSE Enable NUMA support and optimizations
_enable_ascending_scn_in_online_ddl TRUE enable ascending scn scan in online ddl
_enable_asyncvio FALSE enable asynch vectored I/O
_enable_auto_check_constraints_for_dst_upgrade TRUE enable/disable auto check constraints for DST upgrade
_enable_automatic_maintenance 1 if 1, Automated Maintenance Is Enabled
_enable_automatic_sqltune TRUE Automatic SQL Tuning Advisory enabled parameter
_enable_block_level_transaction_recovery TRUE enable block level recovery
_enable_buffer_header_history TRUE if TRUE, records operation history in buffer headers
_enable_bug_29838374 0 enable/disable bug fix 29838374
_enable_capture_select FALSE Parameter to enable capture of SELECT statements
_enable_cdb_all_sync FALSE Is CDB-wide ALL sync enabled
_enable_cdb_upgrade_capture FALSE Enable capture of CDB upgrade
_enable_check_truncate TRUE enable checking of corruption caused by canceled truncate
_enable_columnar_cache 1 Enable Columnar Flash Cache Rewrite
_enable_concurrent_refresh TRUE enable/disable on-commit concurrent mv refresh
_enable_containers_subquery FALSE enable transformation to containers() sub query
_enable_create_cdb_root_clone FALSE Enables creation of CDB Root clone
_enable_create_protected_profile FALSE Enable protected profile creation
_enable_cscn_caching FALSE enable commit SCN caching for all transactions
_enable_dbwr_auto_tracing 1 enable dbwriter auto-tracing
_enable_dbwr_parallel_invalidations TRUE if TRUE, enables flush and invalidate by DBWRs
_enable_ddl_wait_lock TRUE use this to turn off ddls with wait semantics
_enable_default_affinity 0 enable default implementation of hard affinity osds
_enable_default_temp_threshold TRUE Enable Default Tablespace Utilization Threshold for UNDO Tablespaces
_enable_default_undo_threshold TRUE Enable Default Tablespace Utilization Threshold for TEMPORARY Tablespa
_enable_dml_lock_escalation TRUE enable dml lock escalation against partitioned tables if TRUE
_enable_drop_clone FALSE Is drop of a Root Clone allowed
_enable_dynamic_processes FALSE dynamic process SOs
_enable_dynamic_sessions FALSE dynamic session SOs
_enable_editions_for_users FALSE enable editions for all users
_enable_event_ports TRUE Enable/Disable event ports
_enable_exchange_validation_using_check TRUE use check constraints on the table for validation
_enable_fast_file_zero TRUE enable fast file zero code path
_enable_fast_ref_after_mv_tbs FALSE enable fast refresh after move tablespace
_enable_flash_logging TRUE Enable Exadata Smart Flash Logging
_enable_fsdirect_odmlib TRUE enable or disable FsDirect static ODM library
_enable_fsdirect_pin TRUE enable direct pin of FsDirect blocks
_enable_fsdirect_rac FALSE enable FsDirect in RAC
_enable_generic_encryption_opt TRUE Enable generic encryption optimizations
_enable_gsm_listener_networks TRUE gsm listener in listener networks
_enable_guid_endpoint_service TRUE Enable service functionality for GUID service
_enable_hash_overflow FALSE TRUE - enable hash cluster overflow based on SIZE
_enable_heatmap_internal FALSE heatmap related - to be used by oracle dev only
_enable_http_digest_generation TRUE generation of the HTTP Digest verifier is enabled
_enable_hugetlbfs_dynamic_sga FALSE Enable hugetlbfs based dynamic mode for SGA
_enable_hwm_sync TRUE enable HWM synchronization
_enable_iee_stats TRUE enables IEE stats gathering
_enable_ignorable_error_capture FALSE Capture statement if error is ignorable
_enable_ilm_flush_stats TRUE Enable ILM Stats Flush
_enable_ilm_testflush_stats FALSE Enable Test ILM Stats Flush
_enable_increase_lms_process TRUE set to true to allow _increase_lms_process changes
_enable_ios_spm FALSE Allow Split Mirror operations via IOServer
_enable_iou enable io_uring for SYNC IO, ASYNC IO or both
_enable_ivfkot 0 KTSV Subseg IVFKOT
_enable_json_uga_save_restore FALSE enable json uga save and restore during pdb switch
_enable_kernel_io_outliers FALSE enable kernel I/O outlier feature
_enable_kqf_purge TRUE Enable KQF fixed runtime table purge
_enable_list_io FALSE Enable List I/O
_enable_load_from_clone TRUE Is load from a Root Clone allowed
_enable_load_using_app_version TRUE Enables Oracle-supplied common object loading using app version
_enable_lock_down_on_mv_internal_ddls TRUE Enable Lock down on internal MV DDLs
_enable_log_memory_protection_key TRUE enable memory protection keys (log)
_enable_memory_protection_keys TRUE Enable memory protection keys usage
_enable_meta_snap FALSE Is metadata snapshot allowed
_enable_metrics_allpdb TRUE Enable/Disable Metrics for Root and all PDBs if applicable
_enable_metrics_pdb FALSE Enable/Disable Metrics for this Non-Root PDB
_enable_midtier_affinity TRUE enable midtier affinity metrics processing
_enable_minscn_cr TRUE enable/disable minscn optimization for CR
_enable_module_match TRUE Is match of module name enforced
_enable_multiple_fgprepares FALSE Allow concurrent PREPAREs on the same database
_enable_nativenet_tcpip FALSE Enable skgxp driver usage for native net
_enable_noncdb_capture FALSE Parameter to enable capture in non-CDB
_enable_nvm_dispatcher 0 Enable NVM Dispatcher and/or DMPROC
_enable_obj_queues TRUE enable object queues
_enable_offloaded_writes FALSE Enable offloaded writes for Unit Test
_enable_online_index_without_s_locking TRUE Allow online index creation algorithm without S DML lock
_enable_os_cpu_rm FALSE enable internal OSCPURM testing
_enable_parallel_dml FALSE enables or disables parallel dml
_enable_partial_sync FALSE Is partial sync of a Federation allowed
_enable_pdb_close_abort TRUE Enable PDB shutdown abort (close abort)
_enable_pdb_close_noarchivelog FALSE Enable PDB close abort with no archive logging
_enable_pdb_common_ddl FALSE Enable Common DDL in PDB
_enable_pdb_isolation FALSE Enables Pluggable Database isolation inside a CDB
_enable_pdb_process_limit TRUE Enable process limit as the number of sessions in the PDB.
_enable_pdb_skiplist_recovery TRUE Enable pdb skip list setup during media recovery.
_enable_pdb_skiplist_redogen TRUE Enable pdb skip list setup during redo generation.
_enable_pdc FALSE enable pmem direct commit
_enable_per_container_acl FALSE Enable Per Container ACL
_enable_perpdb_suplog FALSE per pdb supplemental logging
_enable_plcmnt_pol_usage FALSE enable placement policy usage
_enable_pluggable_database TRUE Enable Pluggable Database
_enable_pmem_direct_cache TRUE if TRUE, enable PMEM direct mapped buffers
_enable_pmem_exchange TRUE if TRUE, enable PMEM exchange during promotion
_enable_pmem_prefetch FALSE if TRUE, enable prefecting from PMEM
_enable_pmo_outside_begin_end TRUE Enable PMO outside begin-end block
_enable_protected_audit_policy FALSE Allow Protected Unified Audit Policy Enforcement
_enable_proxy_distr_txn TRUE Enable Distributed Transaction in Proxy PDB
_enable_ptime_update_for_sys FALSE Enable/Disable update of user$ for sys
_enable_query_rewrite_on_remote_objs TRUE mv rewrite on remote table/view
_enable_redo_global_post FALSE LGWR post globally on write
_enable_refresh_schedule TRUE enable or disable MV refresh scheduling (revert to 9.2 behavior)
_enable_rejection_cache TRUE Enable ASSM rejection cache
_enable_reliable_latch_waits TRUE Enable reliable latch waits
_enable_rename_user FALSE enable RENAME-clause using ALTER USER statement
_enable_replay_upgrade_diag TRUE Enable diagnostics for Replay Upgrade
_enable_rlb TRUE enable RLB metrics processing
_enable_rolepriv_conversion FALSE Enable mode to convert roles and privileges in ADB
_enable_row_shipping TRUE use the row shipping optimization for wide table selects
_enable_scheduler_extproc_remote_exec FALSE Enable dbms scheduler to execute script executable using extproc
_enable_schema_synonyms FALSE enable DDL operations (e.g. creation) involving schema synonyms
_enable_scn_wait_interface TRUE use this to turn off scn wait interface in kta
_enable_secure_sub_role FALSE Disallow enabling of secure sub roles
_enable_securefile_flashback_opt TRUE Enable securefile flashback optimization
_enable_sensitive_trace FALSE enable traces to contain sensitive information
_enable_separable_transactions FALSE enable/disable separable transactions
_enable_session_heaps_in_mga TRUE Enable using MGA for session heaps
_enable_shared_multitarget_dblink 0 enable SHARED multitarget database links to shards
_enable_shared_pool_durations TRUE temporary to disable/enable kgh policy
_enable_shared_server_sizing TRUE Enable sizing manager for shared servers
_enable_shared_server_sizing_slope FALSE Enable utility slope in sizing manager for shared servers
_enable_shared_server_vector_io FALSE Enable shared server vector I/O
_enable_single_dgprepare FALSE Disable concurrent PREPAREs in same disk group
_enable_snr_rac_emulation FALSE Dev & QA - turn on RU Locking for SNR on non-RAC
_enable_snr_rac_switchover_protection FALSE enable instance switchover protection for SNR on RAC
_enable_space_preallocation 3 enable space pre-allocation
_enable_spacebg TRUE enable space management background task
_enable_streams_pool_subpools FALSE enable streams pool multiple subpools
_enable_synonym_repoint FALSE enable synonym repoint feature
_enable_sysaux_gdr FALSE GDR: Enable on SYSAUX
_enable_sysaux_metadata_clone FALSE enable sysaux metadata clone
_enable_system_app 2 Enable System app for CDB-wide common users
_enable_tablespace_alerts TRUE enable tablespace alerts
_enable_tcpinfo_statistics 238 Enable TCP Info Statistics
_enable_tenant_id_check FALSE Enable Tenant Id check for database link
_enable_tenant_id_transfer FALSE Enable Tenant Id transfer
_enable_thr_kill TRUE Enable/Disable thread directed signalling
_enable_token_verification FALSE Check token is provided when excuting SQL
_enable_trans_hnsw_vector_scan TRUE If true, Transaction support is enabled in hnsw_vector scan
_enable_type_dep_selectivity TRUE enable type dependent selectivity estimates
_enable_um_based_mga FALSE Enable UM-based MGA
_enable_unified_memory FALSE Enable use of unified PGA pool
_enable_user_pdb_close_abort FALSE Enable user-initiated PDB close abort
_enable_verbose_gdr FALSE GDR: Enable verbose
_enable_view_pdb TRUE Enable Proxy PDB support
_endprot_chunk_comment chk 10235 dflt chunk comment for selective overrun protection
_endprot_heap_comment hp 10235 dflt heap comment for selective overrun protection
_endprot_stack_segments FALSE overrun protection for kgh stack segments
_endprot_subheaps TRUE selective overrun protection for subeheaps
_enforce_extproc_hardening FALSE Enforce hardening on external process invocation inside the PDB
_enforce_lockdown_hardening FALSE Enforce hardening on lockdown related operations inside the PDB
_enforce_minimum_password_rollover_time TRUE Enforce minimum PASSWORD_ROLLOVER_TIME of one hour
_enforce_set_container_hardening NONE Enforce hardening on SET CONTAINER inside the PDB
_enforce_valid_lockdown_profile FALSE Enforce valid lockdown profile inside the PDB
_enforce_walletdir_readpriv TRUE Enforce READ Privilege on Wallet Directory for Outbound Communication
_enqueue_deadlock_detect_all_global_locks FALSE enable deadlock detection on all global enqueues
_enqueue_deadlock_scan_secs 0 deadlock scan interval
_enqueue_deadlock_time_sec 5 requests with timeout <= this will not have deadlock detection
_enqueue_debug_multi_instance FALSE debug enqueue multi instance
_enqueue_hash 1043 enqueue hash table length
_enqueue_hash_chain_latches 4 enqueue hash chain latches
_enqueue_locks 6060 locks for managed enqueues
_enqueue_paranoia_mode_enabled FALSE enable enqueue layer advanced debugging checks
_enqueue_resources 2436 resources for enqueues
_enqueue_scan_interval 0 enqueue scan interval
_enqueue_sync_retry_attempts 15 max number of times the bg process to retry synchronous enqueue open i
_enqueue_sync_sim_mem_error FALSE simulate master instance running out of memory when synchronously gett
_enqueue_wall_clock_time FALSE if TRUE, use KSUFTIME timer
_error_row_predicate_evaluation AUTO skip predicate evaluation for error rows
_event_port_opts Options for event ports
_evt_system_event_propagation TRUE disable system event propagation
_exa_internal_parameters Exascale internal parameters
_exa_pmemlog_threshold_usec 100 maximum i/o time (usecs) for enabled Exadata PMEMLog
_exadata_feature_on FALSE Exadata Feature On
_exclude_seed_cdb_view TRUE exclude PDB$SEED from CDB View Result
_expand_aggregates TRUE expand aggregates
_explain_rewrite_mode FALSE allow additional messages to be generated during explain rewrite
_export_data_parquet_temp_dir DATA_PUMP_DIR Temporary directory used for intermediate files for export data
_expression_tracking_elem_per_bucket 30 Number of expression usage statistics elements per hash bucket
_expression_tracking_latch_count 16 Number of latches for tracking expression usage statistics
_extended_data_link_remote FALSE transform extended data link to use database link
_extended_pruning_enabled TRUE do runtime pruning in iterator if set to TRUE
_external_scn_activity_tracking TRUE enable/disable external scn activity tracking
_external_scn_logging_threshold_seconds 86400 High delta SCN threshold in seconds
_external_scn_rejection_delta_threshold_minutes 0 external SCN rejection delta threshold in minutes
_external_scn_rejection_threshold_hours 24 Lag in hours between max allowed SCN and an external SCN
_external_table_hive_partition_restricted TRUE restrict external tabel hive partition methods to Hive supported
_external_table_smart_scan HADOOP_ONLY External Table Smart Scan
_extra_lmn_enabled TRUE suppl logging for extra record enabled
_failover_svrcsum FALSE enable server checksum to optimize failover
_fair_remote_cvt FALSE if TRUE enables fair remote convert
_fairness_threshold 2 number of times to CR serve before downgrading lock
_fast_connection_version 1 Fast Connect Protocol Version Number
_fast_cr_clone TRUE enable fast cr clone feature
_fast_cursor_reexecute FALSE use more memory in order to get faster execution
_fast_dual_enabled TRUE enable/disable fast dual
_fast_full_scan_enabled TRUE enable/disable index fast full scan
_fast_index_maintenance TRUE fast global index maintenance during PMOPs
_fast_psby_conversion TRUE Enable fast physical standby conversion
_fastpin_enable 1 enable reference count based fast pins
_fatalprocess_redo_dump_time_limit 0 time limit, in secs, for diagnostic redo dumps by a fatal process
_fb_log_max_rereads 100 Maximum number of rereads after reading a corrupt flashback block
_fb_recovery_slave_count 0 Number of recovery slaves to be used by the FLASHBACK DATABASE
_fbda_adv_gbl_bscn_bcast_interval 0 flashback archiver broadcast interval to advance global barrier SCN
_fbda_bscn_lag_warning 600 flashback archiver barrierscn lag warning threshold
_fbda_busy_percentage 0 flashback archiver busy percentage
_fbda_debug_assert 0 flashback archiver debug assert for testing
_fbda_debug_mode 0 flashback archiver debug event for testing
_fbda_global_bscn_lag 0 flashback archiver global barrier scn lag
_fbda_inline_percentage 0 flashback archiver inline percentage
_fbda_limit_warning_frequency 21600 flashback archiver barrier scn lag warning frequency
_fbda_rac_inactive_limit 0 flashback archiver rac inactive limit
_fbda_tcrv_cleanup_lag 3600 flashback archiver tcrv cleanup lag in secs
_federation_max_root_clones 4000 Maximum number of Root Clones per Root
_federation_script FALSE Running a Federation script
_ffs_in_range_scan_threshold 50 threshold of min percentage of block read to use ffs in rs
_fg_fast_sync_slack_usecs 1 DAX log file sync sleep slack time
_fg_fast_sync_sleep_target_pct 50 DAX log file sync sleep target pct
_fg_fast_sync_sleep_usecs 0 DAX log file sync sleep time
_fg_fast_sync_spin_usecs 100 DAX log file sync spin time
_fg_iorm_slaves 1 ForeGround I/O slaves for IORM
_fg_log_checksum TRUE Checksum redo in foreground process
_fg_sync_sleep_usecs 0 Log file sync via usleep
_fic_algorithm_set automatic Set Frequent Itemset Counting Algorithm
_fic_area_size 131072 size of Frequent Itemset Counting work area
_fic_min_bmsize 1024 Frequent Itemset Counting Minimum BITMAP Size
_fifteenth_spare_parameter fifteenth spare parameter - integer
_fifteenth_spare_pdb_parameter fifteenth spare pdb parameter - integer
_fifth_spare_parameter fifth spare parameter - integer
_fifth_spare_pdb_parameter fifth spare pdb parameter - integer
_fiftieth_spare_parameter fiftieth spare parameter - integer
_fiftieth_spare_pdb_parameter fiftieth spare pdb parameter - string list
_fifty-eighth_spare_parameter fifty-eighth spare parameter - integer
_fifty-eighth_spare_pdb_parameter fifty-eighth spare pdb parameter - boolean
_fifty-fifth_spare_parameter fifty-fifth spare parameter - integer
_fifty-fifth_spare_pdb_parameter fifty-fifth spare pdb parameter - boolean
_fifty-first_spare_parameter fifty-first spare parameter - integer
_fifty-first_spare_pdb_parameter fifty-first spare pdb parameter - boolean
_fifty-fourth_spare_parameter fifty-fourth spare parameter - integer
_fifty-fourth_spare_pdb_parameter fifty-fourth spare pdb parameter - boolean
_fifty-ninth_spare_parameter fifty-ninth spare parameter - integer
_fifty-ninth_spare_pdb_parameter fifty-ninth spare pdb parameter - boolean
_fifty-second_spare_parameter fifty-second spare parameter - integer
_fifty-second_spare_pdb_parameter fifty-second spare pdb parameter - boolean
_fifty-seventh_spare_parameter fifty-seventh spare parameter - integer
_fifty-seventh_spare_pdb_parameter fifty-seventh spare pdb parameter - boolean
_fifty-sixth_spare_parameter fifty-sixth spare parameter - integer
_fifty-sixth_spare_pdb_parameter fifty-sixth spare pdb parameter - boolean
_fifty-third_spare_parameter fifty-third spare parameter - integer
_fifty-third_spare_pdb_parameter fifty-third spare pdb parameter - boolean
_file_offline_sync_timeout 900 Timeout to sync file offline enqueue (secs)
_file_set_enqueue_timeout 1200 Timeout to acquire file set enqueue (secs)
_file_size_increase_increment 67108864 Amount of file size increase increment, in bytes
_filemap_dir FILEMAP directory
_filter_roaring_bitmap TRUE If true, Roaring Bitmap is used for filter bitvec
_first_k_rows_dynamic_proration TRUE enable the use of dynamic proration of join cardinalities
_first_spare_parameter first spare parameter - integer
_first_spare_pdb_parameter first spare pdb parameter - integer
_fix_control bug fix control parameter
_fix_control_1 bug fix control overflow parameter-1
_fix_control_2 bug fix control overflow parameter-2
_fix_control_3 bug fix control overflow parameter-3
_fix_control_4 bug fix control overflow parameter-4
_fix_control_5 bug fix control overflow parameter-5
_fix_fuzzy_scn FALSE fix fuzzy SCN
_fixup_all_apps FALSE Callback to fix up replay state of all applications
_fixup_app_pdb_status_in_root application name whose PDB application status should be fixed up
_fixup_cdb_apps FALSE Callback to fix up replay state of CDB-wide applications
_flashback_11_1_block_new_opt FALSE use 11.1 flashback block new optimization scheme
_flashback_allow_noarchivelog FALSE Allow enabling flashback on noarchivelog database
_flashback_archiver_partition_size 0 flashback archiver table partition size
_flashback_barrier_interval 1800 Flashback barrier interval in seconds
_flashback_copy_latches 10 Number of flashback copy latches
_flashback_database_test_only FALSE Run Flashback Database in test mode
_flashback_delete_chunk_MB 128 Amount of flashback log (in MB) to delete in one attempt
_flashback_dynamic_enable TRUE enable flashback enable code path
_flashback_dynamic_enable_failure 0 Simulate failures during dynamic enable
_flashback_enable_ra TRUE Flashback enable read ahead
_flashback_format_chunk_mb 4 Chunk mega-bytes for formatting flashback logs using sync write
_flashback_format_chunk_mb_dwrite 16 Chunk mega-bytes for formatting flashback logs using delayed write
_flashback_fuzzy_barrier TRUE Use flashback fuzzy barrier
_flashback_generation_buffer_size 16777216 flashback generation buffer size
_flashback_hint_barrier_percent 20 Flashback hint barrier percent
_flashback_log_io_error_behavior 0 Specify Flashback log I/O error behavior
_flashback_log_min_size 100 Minimum flashback log size
_flashback_log_rac_balance_factor 10 flashback log rac balance factor
_flashback_log_size 1000 Flashback log size
_flashback_logfile_enqueue_timeout 600 flashback logfile enqueue timeout for opens
_flashback_marker_cache_enabled TRUE Enable flashback database marker cache
_flashback_marker_cache_size 328 Size of flashback database marker cache
_flashback_marker_for_every_grp FALSE generate a new flashback marker for every GRP
_flashback_max_log_size 0 Maximum flashback log size in bytes (OS limit)
_flashback_max_n_log_per_thread 2048 Maximum number of flashback logs per flashback thread
_flashback_max_standby_sync_span 300 Maximum time span between standby recovery sync for flashback
_flashback_n_log_per_thread 128 Desired number of flashback logs per flashback thread
_flashback_pdb_thread_filter_disable FALSE disable per PDB thread filter optimization
_flashback_prepare_log TRUE Prepare Flashback logs in the background
_flashback_reclaim_monitor_window 7 Proactive flashback logs reclaimation window
_flashback_reclaim_speed_up FALSE Proactive flashback logs reclaimation speed up
_flashback_size_based_on_redo TRUE Size new flashback logs based on average redo log size
_flashback_standby_barrier_interval 1 Flashback standby barrier interval in seconds
_flashback_standby_check_barrier_MIRA 20 Flashback standby check barrier generation in seconds
_flashback_standby_check_minpfh_MIRA 15 Flashback standby check minimum high fuzzy scn in seconds
_flashback_stby_support_mira TRUE Flashback database on standby supports MIRA
_flashback_validate_controlfile FALSE validate flashback pointers in controlfile for 11.2.0.2 database
_flashback_verbose_info FALSE Print verbose information about flashback database
_flashback_write_max_loop_limit 10 Flashback writer loop limit before it returns
_flush_ilm_stats 0 flush ilm stats
_flush_log_buffer_force FALSE Flush log buffer force
_flush_log_buffer_timeout 0 Flush log buffer wait time in seconds
_flush_plan_in_awr_sql 0 Plan is being flushed from an AWR flush SQL
_flush_redo_to_standby 0 Flush redo to standby test parameter
_flush_undo_after_tx_recovery TRUE if TRUE, flush undo buffers after TX recovery
_fob_dgaalloc TRUE Fob structure allocation from Domain Global Area memory
_fob_ospshare TRUE Fob structure and file descriptor sharing between threads with-in an O
_force_arch_compress 0 Archive Compress all newly created compressed tables
_force_backupset_zt_decryption FALSE Force ZT decryption for backupsets
_force_cloud_on FALSE simulate EHCC code path enable in Cloud Database
_force_comp_validation_rule_failure OFF force compilation validation failure for rule name
_force_containers_subquery FALSE force transformation to containers() sub query
_force_create_cloud_credential FALSE Force create a scheduler credential as DBMS_CLOUD credential
_force_datefold_trunc FALSE force use of trunc for datefolding rewrite
_force_dax_io_err 0 Force I/O error on online/standby redo log
_force_hash_join_spill FALSE force hash join to spill to disk
_force_hsc_compress FALSE compress all newly created tables
_force_java_pool_zero FALSE force java pool size to be zero bytes
_force_job_creator_as_owner FALSE Force the job creator to be same as the job owner
_force_level0_for_local_create_df FALSE Force level 0 backup for locally created datafile
_force_local_temp FALSE For testing only Forces temporary tablespaces to be LOCAL
_force_logging_in_upgrade TRUE force logging during upgrade mode
_force_move_pdb_keys_from_root FALSE force move PDB keys from CDB$ROOT
_force_no_capture FALSE force no capture in a session
_force_oltp_compress FALSE OLTP Compress all newly created compressed tables
_force_oltp_update_opt TRUE OLTP Compressed row optimization on update
_force_partial_compress FALSE Force using OLTP Partial Compression
_force_pmem_direct_mapped_cache_scan TRUE if TRUE, force PMEM mapped direct path scan to cache path scan
_force_prvtreslv_hostpattern Host name pattern forced to be privately resolved
_force_result_cache_data_share TRUE Force Result Cache for Data Share
_force_rewrite_enable FALSE control new query rewrite features
_force_slave_mapping_intra_part_loads FALSE Force slave mapping for intra partition loads
_force_standard_compile FALSE force compilation of STANDARD
_force_sys_compress TRUE Sys compress
_force_temp_space_cleanup TRUE Force temp space cleanup after PDB close
_force_temptables_for_gsets FALSE executes concatenation of rollups using temp tables
_force_tmp_segment_loads FALSE Force tmp segment loads
_forced_endian_type UNKNOWN Forced endian type of data dictionary
_forceopen_bind_undotbs FALSE Bind to any undo tbs during force open
_foreground_idle_check_timeout 30 idle foreground check timeout
_fortieth_spare_parameter fortieth spare parameter - integer
_fortieth_spare_pdb_parameter fortieth spare pdb parameter - string
_forty-eighth_spare_parameter forty-eighth spare parameter - integer
_forty-eighth_spare_pdb_parameter forty-eighth spare pdb parameter - string list
_forty-fifth_spare_parameter forty-fifth spare parameter - integer
_forty-fifth_spare_pdb_parameter forty-fifth spare pdb parameter - string list
_forty-first_spare_parameter forty-first spare parameter - integer
_forty-first_spare_pdb_parameter forty-first spare pdb parameter - string list
_forty-fourth_spare_parameter forty-fourth spare parameter - integer
_forty-fourth_spare_pdb_parameter forty-fourth spare pdb parameter - string list
_forty-ninth_spare_parameter forty-ninth spare parameter - integer
_forty-ninth_spare_pdb_parameter forty-ninth spare pdb parameter - string list
_forty-second_spare_parameter forty-second spare parameter - integer
_forty-second_spare_pdb_parameter forty-second spare pdb parameter - string list
_forty-seventh_spare_parameter forty-seventh spare parameter - integer
_forty-seventh_spare_pdb_parameter forty-seventh spare pdb parameter - string list
_forty-sixth_spare_parameter forty-sixth spare parameter - integer
_forty-sixth_spare_pdb_parameter forty-sixth spare pdb parameter - string list
_forty-third_spare_parameter forty-third spare parameter - integer
_forty-third_spare_pdb_parameter forty-third spare pdb parameter - string list
_forwarded_2pc_threshold 10 auto-tune threshold for two-phase commit rate across RAC instances
_fourteenth_spare_parameter fourteenth spare parameter - integer
_fourteenth_spare_pdb_parameter fourteenth spare pdb parameter - integer
_fourth_spare_parameter fourth spare parameter - integer
_fourth_spare_pdb_parameter fourth spare pdb parameter - integer
_frame_cache_time 0 number of seconds a cached frame page stay in cache.
_freeze_kgh_timestamp FALSE prevent heap manager timestamp from advancing
_fsdirect_fast_file_create TRUE Allow optimized file creation path for FsDirects
_full_diag_on_rim FALSE rim nodes have full DIA* function
_full_pwise_join_enabled TRUE enable full partition-wise join when TRUE
_fusion_security TRUE Fusion Security
_gas_partition_size 0 Global Address Space Partition Size for each instance
_gby_hash_aggregation_enabled TRUE enable group-by and aggregation using hash scheme
_gby_onekey_enabled TRUE enable use of one comparison of all group by keys
_gby_vector_aggregation_enabled TRUE enable group-by and aggregation using vector scheme
_gc_affinity_locking TRUE if TRUE, enable object affinity
_gc_affinity_locks TRUE if TRUE, get affinity locks
_gc_affinity_ratio 50 dynamic object affinity ratio
_gc_anti_lock_ratio 66 dynamic object anti-lock ratio
_gc_async_send TRUE if TRUE, send blocks asynchronously
_gc_bg_merge TRUE if TRUE, merge pi buffers in the background
_gc_blocking_pins FALSE if TRUE, record a histogram of blocking pins
_gc_buckets_per_latch 0 number of hash buckets per latch
_gc_bypass_readers TRUE if TRUE, modifications bypass readers
_gc_check_bscn TRUE if TRUE, check for stale blocks
_gc_coalesce_recovery_reads TRUE if TRUE, coalesce recovery reads
_gc_cr_server_read_wait TRUE if TRUE, cr server waits for a read to complete
_gc_defer_ping_index_only TRUE if TRUE, restrict deferred ping to index blocks only
_gc_defer_time 0 how long to defer pings for hot buffers in microseconds
_gc_delay_ping TRUE if TRUE, delay pings to hot blocks
_gc_disable_cell_populate FALSE if TRUE, disable cell ram cache populate
_gc_disable_s_lock_brr_ping_check TRUE if TRUE, disable S lock BRR ping check for lost write protect
_gc_down_convert_after_keep TRUE if TRUE, down-convert lock after recovery
_gc_down_convert_after_write TRUE if TRUE, down-convert lock after a write
_gc_drm_windows 8 number of DRM windows
_gc_dump_remote_lock TRUE if TRUE, dump remote lock
_gc_element_percent 105 global cache element percent
_gc_enable_cr_bypass TRUE if TRUE, enable CR bypass mechanism
_gc_fast_index_split_timeout 100 fast index split wait timeout
_gc_fast_index_split_wait 0 fast index split wait usn array size
_gc_fg_merge TRUE if TRUE, merge pi buffers in the foreground
_gc_fg_rollback TRUE if TRUE, fg does rollback instead of cr server
_gc_fg_spin_time 0 foreground msgq spin time
_gc_first_dirty_merge TRUE if TRUE, merge with a pi after first dirty
_gc_first_dirty_pi_merge_switch_current TRUE First dirty pi merge switch current
_gc_flush_during_affinity TRUE if TRUE, flush during affinity
_gc_fusion_compression 1024 compress fusion blocks if there is free space
_gc_global_checkpoint_scn TRUE if TRUE, enable global checkpoint scn
_gc_global_lru AUTO turn global lru off, make it automatic, or turn it on
_gc_global_lru_touch_count 5 global lru touch count
_gc_global_lru_touch_time 60 global lru touch time in seconds
_gc_integrity_checks 1 set the integrity check level
_gc_interconnect_checksum FALSE if TRUE, checksum interconnect blocks
_gc_interrupt_wait_time 1 How long to wait for requests to complete after interrupt
_gc_keep_recovery_buffers TRUE if TRUE, make recovery buffers current
_gc_keep_undo_recovery_buffers TRUE if TRUE, make recovery undo buffers current
_gc_latches 32 number of latches per LMS process
_gc_lease_time 10000 lease time for memoptimize reads
_gc_log_flush TRUE if TRUE, flush redo log before a current block transfer
_gc_max_downcvt 4096 maximum downconverts to process at one time
_gc_max_reg_sz 274877906944 maximum length for memory registration
_gc_msgq_buffers 0 set number of MSGQ buffers
_gc_no_fairness_for_clones TRUE if TRUE, no fairness if we serve a clone
_gc_numa_lock_elements FALSE if TRUE, numa aware lock element distribution
_gc_object_queue_max_length 0 maximum length for an object queue
_gc_override_force_cr TRUE if TRUE, try to override force-cr requests
_gc_partial_cleanout TRUE if TRUE, partial cleanout is enabled
_gc_persistent_read_mostly TRUE if TRUE, enable persistent read-mostly locking
_gc_policy_ckpt_minimum 50 dynamic object policy minimum checkpoint activity per minute
_gc_policy_minimum 15000 dynamic object policy minimum lock activity per minute
_gc_policy_rm_dirty_percent 1 percent of cache which can be dirty for readmostly
_gc_policy_time 20 how often to make object policy decisions in minutes
_gc_rdma_checkpoint_check TRUE if TRUE, use RDMA to optimize object checkpoints
_gc_rdma_connections 8000 maximum number of buffer cache RDMA connections
_gc_read_mostly_flush_check TRUE if TRUE, optimize checkpoints for read mostly objects
_gc_read_mostly_locking TRUE if TRUE, enable read-mostly locking
_gc_reap_stale_messages TRUE Reap stale messages
_gc_sanity_check_cr_buffers FALSE if TRUE, sanity check CR buffers
_gc_save_cleanout FALSE if TRUE, save cleanout to apply later
_gc_serve_from_flash_cache FALSE if TRUE, try to serve a flash cache buffer
_gc_skip_undo_disk_read TRUE if TRUE, skip the disk read for undo blocks
_gc_spin_time 32 rdma spin time
_gc_statistics TRUE global cache statistics level
_gc_temp_affinity FALSE if TRUE, enable global temporary affinity
_gc_timestamps 0 Add timestamps to cache fusion messages
_gc_trace_blocking_pins FALSE if TRUE, trace blocking pins
_gc_trace_freelist_empty FALSE if TRUE, dump a trace when we run out of lock elements
_gc_transfer_ratio 75 dynamic object read-mostly transfer ratio
_gc_try_to_skip_imc_flush TRUE if TRUE, try to skip an imc populate flush
_gc_undo_affinity TRUE if TRUE, enable undo affinity
_gc_undo_header_rdma_read TRUE if TRUE, rdma read of undo headers is enabled
_gc_undo_rdma_read FALSE if TRUE, rdma read of undo blocks is enabled
_gc_vector_read TRUE if TRUE, vector read current buffers
_gcr_change_cached_types TRUE allow automatic changes to cached resource types
_gcr_ckptmon_stall_time 900 CKPT Monitor stall time (secs)
_gcr_ckptmon_trace_time 0 CKPT Monitor trace time (secs)
_gcr_cpu_consumer_dump_level 0 level of process dump performed for CPU consumers
_gcr_cpu_min_free 10 minimum amount of free CPU to flag an anomaly
_gcr_cpu_min_hard_limit 0 hard limit for min free CPU to flag high CPU
_gcr_css_group_large size of large CSS group above which query/update disabled
_gcr_css_group_query_boost allowed number of serial multiple queries
_gcr_css_group_try_lock_delay 10 minimum delay between group locking attempts, secs
_gcr_css_group_update2_interval interval between CSS group updates when busy, secs
_gcr_css_group_update_interval interval between CSS group updates, secs
_gcr_css_use_2group_lock FALSE if FALSE, GCR will not try to lock 2 CSS groups at the same time
_gcr_disabled_actions gcr disabled actions list
_gcr_disabled_metrics gcr disabled metrics list
_gcr_dump_cpu_consumers FALSE if TRUE, enable dumps of CPU consumers
_gcr_enable_async_helpers TRUE if TRUE, GCR will spawn helper actions asynchronously
_gcr_enable_high_cpu_kill FALSE if TRUE, GCR may kill foregrounds under high load
_gcr_enable_high_cpu_rm TRUE if TRUE, GCR may enable a RM plan under high load
_gcr_enable_high_cpu_rt TRUE if TRUE, GCR may boost bg priority under high load
_gcr_enable_high_memory_kill FALSE if TRUE, GCR may kill foregrounds under high memory load
_gcr_enable_kill_inst_diags FALSE if TRUE, GCR will collect OS diags prior to kill instance
_gcr_enable_ktfbue_gather_stats TRUE enable/disable gather stats on X$KTFBUE
_gcr_enable_new_drm_check TRUE if FALSE, revert to old drm load metric
_gcr_enable_pdb_abort FALSE if TRUE, GCR will process pdb abort messages
_gcr_enable_statistical_cpu_check TRUE if FALSE, revert to old cpu load metric
_gcr_ges_cachedres_mult 20 ges cached resources multiplier
_gcr_ges_longchain_mult 5 ges longchain multiplier
_gcr_ges_res_cache_percent_threshold 40 percentage resource cache usage threshold
_gcr_high_cpu_threshold 10 minimum amount of CPU process must consume to be kill target
_gcr_high_cpwt_threshold 30 longest tolerable ctwr process waits time
_gcr_high_fbwt_threshold 300 longest tolerable free buffer waits time
_gcr_high_hashlist_latch_nowait_misses 10000 highest hash list get nowait fails tolerable
_gcr_high_hashlist_latch_wait_misses 10000 highest hash list get wait fails tolerable
_gcr_high_lfsci_threshold 1800 longest tolerable log file switch (checkpoint incomplete) wait
_gcr_high_memory_threshold 10 minimum amount of Memory process must consume to be kill target
_gcr_inst_termination_action auto instance termiation follow-up action
_gcr_max_rt_procs maximum number of RT DLM processes allowed by GCR
_gcr_max_used_swap 75 limit for maximum used swap space before flagging an error
_gcr_mem_min_free 10 minimum amount of free memory to flag an anomaly
_gcr_min_cache_reuse 50 minimum cache reuse rate threshold
_gcr_min_free_memory_hard_limit 1073741824 hard limit for minimum free memory,for high memory systems
_gcr_smf FALSE enable memory information sharing using node shared memory
_gcr_terminate_on_swap FALSE set to true to allow inst termination on swap metric failure
_gcr_tick duration of time tick used by state machine, centisecs
_gcr_use_css TRUE if TRUE the d-state processing code in 38215338 is enabled
_gcs_check_closed_lock 0 cache fusion check closed lock level
_gcs_cluster_flash_cache_mode 0 cluster flash cache mode
_gcs_cluster_flash_cache_persistency FALSE Enable cluster flash cache persistency (FALSE = disable (default), TRU
_gcs_cr_master_ping_remote TRUE if TRUE, cr request from director will ping the remote holder
_gcs_crslave_check_time 10 time interval to check for load on cr slaves in seconds
_gcs_crslave_longq_cnt 2000 long queue time threshold for cr slave
_gcs_crslave_longq_us 1000 long queue time for cr slave in microseconds
_gcs_current_rdma 1 if greater than 0, rdma read of current blocks is enabled
_gcs_current_rdma_grant_global TRUE if TRUE, enable rdma read of current blocks for global role
_gcs_disable_imc_preallocation FALSE disable preallocation for imc memory requirement in RAC
_gcs_disable_remote_handles FALSE disable remote client/shadow handles
_gcs_disable_skip_close_remastering FALSE if TRUE, disable skip close optimization in remastering
_gcs_dynamic_sga FALSE if TRUE, enable dynamic cache fusion resources in runtime
_gcs_dynamic_sga_preference 0 gcs dynamic sga preference
_gcs_dynamic_slaves TRUE if TRUE, it enables dynamic adjustment of the number of gcs slaves
_gcs_enable_private_iterator TRUE Enable private iterator for GCS locks
_gcs_fast_reconfig TRUE if TRUE, enable fast reconfiguration for gcs locks
_gcs_flash_cache_mode 0 flash cache mode
_gcs_freelists_alloc_percent 0 initial allocation of gcs freelists percentage of max usage
_gcs_integrity_checks 1 cache fusion integrity check level
_gcs_kjbdump_threshold 60 threshold timeout to dont dump proc in kjbdmp in seconds
_gcs_latches 128 number of gcs resource hash latches to be allocated per LMS process
_gcs_lsr_frequency 60 frequency of invoking lock state resolution in seconds
_gcs_max_antilocks_unmount_inst 10000 maximum number of anti-locks at unmount instance per LMS
_gcs_min_cr_slaves 0 if non zero, it enables the minimum number of gcs slaves
_gcs_min_slaves 0 if non zero, it enables the minimum number of gcs slaves
_gcs_partial_open_mode 5 partial open cache fusion service in reconfiguration
_gcs_pkey_history 16384 number of pkey remastering history
_gcs_process_in_recovery TRUE if TRUE, process gcs requests during instance recovery
_gcs_recoverable_asserts 0 if non-zero, enable recoverable assert resolution
_gcs_res_freelists 1 number of gcs resource freelists per LMS
_gcs_res_hash_buckets number of gcs resource hash buckets to be allocated
_gcs_res_per_bucket 4 number of gcs resource per hash bucket
_gcs_reserved_resources 64 allocate the number of reserved resources in reconfiguration
_gcs_reserved_shadows 400 allocate the number of reserved shadows in reconfiguration
_gcs_resources 0 number of gcs resources to be allocated
_gcs_shadow_locks 0 number of gcs shadow locks to be allocated
_gcs_spin_check_instance_threshold 60 threshold timeout to dump proc in spin check in seconds
_gcs_spin_check_threshold 4096 spin check attempt count
_gcs_spin_check_time_interval 300 spin check time interval in seconds
_gcs_testing 0 GCS testing parameter
_gcs_trace_bucket FALSE TRUE: use GCS trace bucket and trace LOW by default, FALSE: use defaul
_gcs_trace_bucket_size LMS:1048576-RMV:1048 size of the GCS trace bucket in bytes (format: "LMS:<k>-RMV:<l>-CRV:<m
576-CRV:1048576-DBW:
524288
_gcs_track_reliable_block_sends FALSE if TRUE, track block lost on reliable interconnect
_gcs_verify_antilock FALSE if TRUE, enable anti-lock check
_gdr_clear_active_only FALSE GDR: Clear active ranges only
_gdr_clear_inactive_only FALSE GDR: Clear inactive ranges only
_gdr_control_flags 0 gdr control flags
_gds_allow_nullkey 0 allow the use of nullable shard key columns
_gds_chunk_num 0 number of chunks in sharding environment
_gds_lddlid 0 the id of the last executed DDL query
_gds_max_chunk_num 0 max chunk_num used in sharding environment
_gds_shardgroup_id 0 shardgroup database is in
_generalized_pruning_enabled TRUE controls extensions to partition pruning for general predicates
_ges_aggr_cache_clnup_intvl 25 aggressive cache clean-up interval (in secs) before FG steal
_ges_bidirectional_chaining 0 GES bidirectional chaining
_ges_dd_debug 1 if 1 or higher enables GES deadlock detection debug diagnostics
_ges_debug_acks FALSE Event to debug acks from bcast resource
_ges_default_lmds * default lmds for enqueue hashing
_ges_designated_master TRUE designated master for GES and GCS resources
_ges_diagnostics TRUE if TRUE enables GES diagnostics
_ges_diagnostics_asm_dump_level 11 systemstate level on global enqueue diagnostics blocked by ASM
_ges_direct_free FALSE if TRUE, free each resource directly to the freelist
_ges_direct_free_res_type string of resource types(s) to directly free to the freelist
_ges_dump_open_locks FALSE if TRUE, dump open locks for the LCK process during shutdown
_ges_fggl TRUE DLM fg grant lock on/off
_ges_freeable_res_chunk_free FALSE if TRUE, free dynamic resource chunks which are freeable
_ges_freeable_res_chunk_free_interval 180 time interval for freeing freeable dynamic resource chunks
_ges_gather_res_reuse_stats TRUE if TRUE, gather resource reuse statistics
_ges_hash_groups * enqueue hash table groups
_ges_health_check 0 if greater than 0 enables GES system health check
_ges_lmd_mapping * enqueue to lmd mapping
_ges_max_avg_hash_chainlen 6 maximum average length of GES hash chains
_ges_max_hash_resizes 0 maximum number of GES hash expansions
_ges_mseq_demo 0 demo mseq wrap scenarios (dflt is 0)
_ges_nres_divide 0 how to divide number of enqueue resources among hash tables
_ges_num_aggr_cache_clnup 5 number of aggressive cache clean-up before FG steal
_ges_num_blockers_to_kill 1 number of blockers to be killed for hang resolution
_ges_optimizations 7 GES optimizations level
_ges_resource_memory_opt 36 enable different level of ges res memory optimization
_ges_server_processes 1 number of background global enqueue server processes
_ges_vbfreelists 0 number of valueblock freelists (will be adjusted to power of 2)
_global_hang_analysis_interval_secs 5 the interval at which global hang analysis is run
_globaldict_analyzer_pct 100 Maximum percentage of unique values in analyzer phase for GD
_globaldict_chain_limit 32 Chain limit for global dictionary
_globaldict_check 0 Dictionary checking
_globaldict_chunk_minalloc FALSE Force minimum chunk allocation size
_globaldict_dbg 0 Global dictionary debug modes
_globaldict_enable 2 Enable segment dictionary
_globaldict_max_gdsize 1073741824 Maximum number of entries in a Global dictionary
_globaldict_reprobe_limit 1 Reprobe limit for global dictionary
_globaldict_use_ndv TRUE Use NDV for sizing global dictionary, if available
_globalindex_pnum_filter_enabled TRUE enables filter for global index with partition extended syntax
_graalsql_compilation_dump_graph_on_crash FALSE dump compilation graphs to the trace file when compilation crashes in
_graalsql_compilation_errors_are_fatal FALSE failed compilations are fatal for graalsql
_graalsql_enable_compilation TRUE enable runtime compilation for graalsql
_graalsql_force FALSE Force execution of regular expression using TRegex, errors are fatal i
_graalsql_free_threshold 0 Maximum amount of free memory w.r.t. memory_target required for mainta
_graalsql_load_threshold 10485760 Force execution of regular expression using TRegex, errors are fatal i
_graalsql_max_heap_size 1000 maximum heap size used by GraalSQL in a session, in MB
_graalsql_regexp_accelerator OFF Accelerate regular expression evaluation using GraalSQL
_graalsql_regexp_cache_size 16 Number of compiled regular expressions to maintain in cache.
_graalsql_regexp_errors_are_fatal FALSE failed TRegex automata generation are fatal for graalsql
_graalsql_regexp_offload FALSE Always offload computation of regexp to NLSRTL at runtime.
_grant_read_instead_of_select FALSE grant read privilege instead of select wherever applicable
_grant_secure_role FALSE Disallow granting of SR to other SR or NSR
_grant_unlimited_tablespace_role FALSE Allow UNLIMITED TABLESPACE privilege grant to database roles
_granularity_last_successful_login_time 0 Granularity (in sec) for writing Last Successful Login Time to USER$
_group_leader FALSE enable group leader functionality
_group_membership_bucket_batch_size 8 ksimpoll group membership bucket batch size
_group_membership_bucket_scan_timeout 5 ksimpoll group membership bucket scan timeout
_group_membership_entries_per_bucket 100 ksimpoll group membership entries per bucket
_groupby_nopushdown_cut_ratio 3 groupby nopushdown cut ratio
_groupby_orderby_combine 5000 groupby/orderby don't combine threshold
_gs_anti_semi_join_allowed TRUE enable anti/semi join for the GS query
_gsm GSM descriptions
_gsm_config_vers 0 version of gsm config
_gsm_cpu_thresh 75 CPU busy threshold
_gsm_drv_interval 30 metric derived values interval
_gsm_local_users FALSE create GSM local users
_gsm_max_instances_per_db 8 maximum number of instances per database in gsm cloud
_gsm_max_num_regions 10 maximum number of regions in gsm cloud
_gsm_pool_size 134217728 Global Shared Memory size
_gsm_region_list List of GSM Regions
_gsm_srlat_thresh 20 Single block read latency threshold
_gsm_srvctl_diag_time 0 gsm invoked srvctl pre-timeout diagnostic time
_gsm_srvctl_timeout 0 gsm invoked srvctl timeout
_gsm_svcrgnmax 100 Maximum Service x Region statistics
_gsm_thresh_respct 50 threshold resource percentage
_gsm_thresh_zone 10 threshold zone
_guid_dblink_data_share TRUE Use GUID based DB Link for Data Share
_gwm_autoons_ha_subscription AutoONS HA notification subscription string
_gwm_autoons_rlb_subscription AutoONS RLB notification subscription string
_gwm_database_flags GWM Database Flags
_gwm_db_unique_name gsm db_unique_name name
_gwm_disable_ra FALSE Oracle internal parameter
_gwm_enable_ioft FALSE Allow instead of triggers in sharding
_gwm_force_sync_duptab FALSE force synchronous on creating duplicated table
_gwm_int_dbnum 0 GWM internal db id
_gwm_lagtype gsm lag type
_gwm_max_start_catddlid 0 max ddl_id on catalog at startup.
_gwm_spare1 gsm spare 1
_gwm_spare2 0 gsm spare 2
_gwm_spare3 0 gsm spare 3
_gwm_sr_ddlsync_enabled TRUE enable sr ddl synchronization in oracle sharding
_gwm_sys_ddl 0 allow DDL as SYS
_gwm_use_srvctl 0 use srvctl for service mnagement
_gwr_multimaster 0 enable SHARED multitarget database links to shards
_gws_cache_version 0 the shard/catalog cache version.
_gws_catalog_wallet 0 the sharding catalog has a wallet
_gws_deployed 0 the shardb/catalog has been deployed for sharding.
_gws_directory_sharding 0 directory-based sharding
_gws_encddl 0 Encrypt DDL text.
_gws_sharding_method 0 Sharding method used (system-managed/user-defined/composite)
_hang_aggressive_cloud_mode_enabled FALSE Blocker Resolver aggressive cloud mode enabled
_hang_allow_resolution_on_single_nonrac DBRM Blocker Resolver allow resolution on single non-RAC instances
_hang_analysis_num_call_stacks 3 hang analysis num call stacks
_hang_analyze_dump_session_summary FALSE if TRUE, dump session summary
_hang_analyze_elapsed_time_limit 1800 Hang Analyze elapsed time limit in seconds
_hang_analyze_oradebug_time_limit 900 timeout for oradebug invoked hang analysis
_hang_analyze_session_summary_interval 60 Hang dump session summary frequency
_hang_appl_issue_session_threshold 0 Blocker Resolver application issue session threshold
_hang_application_hang_resolution_enabled FALSE Blocker Resolver application related hang resolution enabled
_hang_asm_hang_resolution_enabled FALSE Blocker Resolver ASM blocker resolution enabled
_hang_base_file_count 5 Number of trace files for the normal base trace file
_hang_base_file_space_limit 100000000 File space limit for current normal base trace file
_hang_blocked_session_percent_threshold 20 Blocker Resolver fast-track blocked session percent threshold
_hang_bool_spare1 TRUE Blocker Resolver bool 1
_hang_bool_spare2 TRUE Blocker Resolver bool 2
_hang_bool_spare3 TRUE Blocker Resolver bool 3
_hang_bool_spare4 TRUE Blocker Resolver bool 4
_hang_cpu_hung_thresh_sec 120 Hang Manager threshold for resmgr:cpu quantum
_hang_cross_boundary_hang_detection_enabled TRUE Blocker Resolver Cross Boundary detection enabled
_hang_cross_boundary_ssd_flood_control_interval 300 Blocker Resolver Cross Boundary SSD flood control interval
_hang_cross_cluster_hang_detection_enabled TRUE Blocker Resolver Cross Cluster detection enabled
_hang_deadlock_resolution_enabled TRUE Blocker Resolver deadlock resolution enabled
_hang_delay_lsr_hang_resolution_enabled TRUE Blocker Resolver delays Triggering LSR and hang resolution
_hang_delay_resolution_for_libcache TRUE Blocker Resolver delays hang resolution for library cache
_hang_detection_enabled TRUE Blocker Resolver detection enabled
_hang_enable_processstate FALSE Enable Process State Dumping
_hang_fast_track_critical_database_processes_enabl TRUE Blocker Resolver fast-track critical database processes enabled
ed
_hang_fast_track_progressing_sessions TRUE Blocker Resolver fast-track progressing sessions enabled
_hang_fast_tracked_hang_verification_interval 10 Blocker Resolver fast-track hang verification interval
_hang_fb_high_wait_count_percentage 30 Blocker Resolver final blocker high wait count percentage
_hang_ft_min_degrading_samples_percent_threshold 60 Blocker Resolver fast-track minimum degrading samples threshold
_hang_hang_analyze_output_hang_chains TRUE if TRUE hang manager outputs hang analysis hang chains
_hang_hang_blocked_session_delta_percent_threshold 20 Blocker Resolver hang's blocked session delta percent threshold
_hang_hiload_promoted_ignored_hang_count 2 Blocker Resolver high load or promoted ignored hang count
_hang_hiprior_session_attribute_list Blocker Resolver high priority session attribute list
_hang_hs_hang_metrics_enabled TRUE Blocker Resolver Hang Specific hang metrics enabled
_hang_hung_session_ewarn_percent 34 Blocker Resolver hung session early warning percentage
_hang_ignore_hngmtrc_interval 150 Blocker Resolver ignore hang metric dependent hang interval
_hang_ignored_hang_count 1 Blocker Resolver ignored hang count
_hang_ignored_hangs_interval 300 Time in seconds ignored hangs must persist after verification
_hang_int_spare1 0 Blocker Resolver int 1
_hang_int_spare2 0 Blocker Resolver int 2
_hang_int_spare3 0 Blocker Resolver int 3
_hang_int_spare4 0 Blocker Resolver int 4
_hang_intersecting_chains_scanning_enabled TRUE Blocker Resolver intersecting chains scanning is allowed
_hang_log_high_load_to_alert FALSE Blocker Resolver log high load to alert log
_hang_log_important_hangs_to_alert TRUE Blocker Resolver log important hangs to alert log
_hang_log_io_hung_sessions_to_alert FALSE Blocker Resolver log sessions hung on IO to alert log
_hang_log_verified_hangs_to_alert FALSE Blocker Resolver log verified hangs to alert log
_hang_low_wait_time_cutoff 6 Blocker Resolver low wait time cutoff in seconds
_hang_lsr_trigger_enabled TRUE Blocker Resolver lsr trigger enabled
_hang_lws_file_count 5 Number of trace files for long waiting sessions
_hang_lws_file_space_limit 100000000 File space limit for current long waiting session trace file
_hang_mark_some_idle_waits_terminal FALSE Blocker Resolver mark some wait events as terminal waits
_hang_max_instance_allow_node_eviction 1 Blocker Resolver maximum instance count to allow node eviction
_hang_max_local_db_clients_allowed 0 Blocker Resolver maximum local db clients allowed
_hang_max_session_hang_time 96 Blocker Resolver maximum session hang time in seconds
_hang_metrics_older_bitmap_threshold 25 Blocker Resolver Hang Metric older bitmap threshold
_hang_metrics_recent_bitmap_threshold 50 Blocker Resolver Hang Metric recent bitmap threshold
_hang_monitor_archiving_related_hang_interval 300 Time in seconds ignored hangs must persist after verification
_hang_msg_checksum_enabled TRUE enable hang graph message checksum
_hang_nested_wait_handling_enabled TRUE Blocker Resolver nested wait event handling enabled
_hang_parsing_hangs_resolution_interval 0 Blocker Resolver parsing hangs resolution interval
_hang_prog_ft_critical_db_proc_verification_interv 900 Blocker Resolver progressing, fast-tracked critical db process verific
al
_hang_promote_process_termination_interval 70 Blocker Resolver promote process termination interval in seconds
_hang_px_resolution_on_asm_enabled TRUE Blocker Resolver px resolution on ASM enabled
_hang_resolution_allow_archiving_issue_termination TRUE Blocker Resolver hang resolution allow archiving issue termination
_hang_resolution_confidence_promotion FALSE Blocker Resolver hang resolution confidence promotion enabled
_hang_resolution_global_hang_confidence_promotion FALSE Blocker Resolver hang resolution global hang confidence promotion
_hang_resolution_partial_hangs_on_asm_enabled TRUE Blocker Resolver resolution of partial hangs on ASM enabled
_hang_resolution_partial_hangs_on_db_enabled TRUE Blocker Resolver resolution of partial hangs on DB enabled
_hang_resolution_percent_hung_sessions_threshold 300 Blocker Resolver hang resolution percent hung sessions threshold
_hang_resolution_percent_hung_sessions_threshold2 5000 Blocker Resolver hang resolution percent hung sessions threshold2
_hang_resolution_policy HIGH Blocker Resolver hang resolution policy
_hang_resolution_promote_process_termination TRUE Blocker Resolver hang resolution promote process termination
_hang_resolution_scope INSTANCE Blocker Resolver hang resolution scope
_hang_root_ha_phase_trigger_time 300 Blocker Resolver root HA phase trigger time
_hang_running_in_lrg FALSE Blocker Resolver running in lrg
_hang_sess_enq_wait_blocked_session_threshold 5 Blocker Resolver session enqueue wait blocked session threshold
_hang_sess_enq_wait_resltn_trig_time 0 Blocker Resolver session enqueue wait resolution trigger time
_hang_session_scan_update_hb_interval 6000 Blocker Resolver session scan update heartbeat interval
_hang_short_stacks_output_enabled TRUE if TRUE hang manager outputs short stacks
_hang_signature_list_match_output_frequency 10 Hang Signature List matched output frequency
_hang_singleton_detection_rw_enabled FALSE Blocker Resolver singleton detection enabled for read-write
_hang_singleton_resolution_rw_enabled FALSE Blocker Resolver singleton resolution enabled for read-write
_hang_statistics_collection_interval 15 Blocker Resolver statistics collection interval in seconds
_hang_statistics_collection_ma_alpha 30 Blocker Resolver statistics collection moving average alpha
_hang_statistics_high_io_percentage_threshold 25 Blocker Resolver statistics high IO percentage threshold
_hang_terminate_session_replay_enabled TRUE Blocker Resolver terminates sessions allowing replay
_hang_trace_interval 32 Blocker Resolver trace interval in seconds
_hang_verification_interval 46 Blocker Resolver verification interval in seconds
_hanganalyze_strip_offset TRUE if TRUE, strips offsets from short stack from HA wait chains
_hard_protection FALSE if TRUE enable H.A.R.D specific format changes
_hash_join_enabled TRUE enable/disable hash join
_hash_multiblock_io_count 0 number of blocks hash join will read/write at once
_hashops_prefetch_size 4 maximum no of rows whose relevant memory locations are prefetched
_hb_redo_interval 1000 generic heartbeat redo frequency
_hb_redo_msg_interval 100 BOC HB redo message interval in ms
_hcs_disable_all_prune FALSE prune hierarchies pinned to ALL level
_hcs_disable_all_qry_optz FALSE skip all query optimization on generated SQL
_hcs_disable_av_gby_opt FALSE disable analytic view query group by optimization
_hcs_disable_av_jback_opt FALSE optimize analytic view query joinback
_hcs_disable_av_sql_hint FALSE disable analytic view sql hint
_hcs_disable_basetbl_transform FALSE disable base table transform
_hcs_disable_bd_agg_opt FALSE optimize base data aggregation
_hcs_disable_calc_dtm_to_out_opt FALSE apply move calc determined hier to output hier optimization
_hcs_disable_calc_opt FALSE calc optimize
_hcs_disable_calc_union_opt FALSE disable calc union optimization
_hcs_disable_cell_qry_atr_prune_opt FALSE apply attribute prune optimization to cell query
_hcs_disable_cell_qry_lvl_prune_opt FALSE apply level prune optimization to cell query
_hcs_disable_cell_qry_mv_cache_opt FALSE apply mv cache optimization to cell query
_hcs_disable_cell_qry_no_calc_nav_opt FALSE apply no calc navigation optimization to cell query
_hcs_disable_cell_qry_no_out_data_opt FALSE apply no output data optimization to cell query
_hcs_disable_col_prune_optz FALSE skip column pruning optimization on generated SQL
_hcs_disable_dt_opt_cell_qry FALSE disable cell query optimizations for datatype queries
_hcs_disable_dtmall_opt FALSE disable determine all optimization
_hcs_disable_dup_nav_calc_opt FALSE duplicate navigation calc optimize
_hcs_disable_dup_src_tbl_opt FALSE apply duplicate src table optimization
_hcs_disable_exists_distinct FALSE no exists distinct
_hcs_disable_filter_hierarchies FALSE filter hierarchies in hcs queries
_hcs_disable_fltr_below_fltr_star_opt FALSE apply filter below filtered star optimization
_hcs_disable_fltr_fact_opt FALSE apply filtered fact optimization
_hcs_disable_fltr_hier_star_opt FALSE apply filtered hierarchy star optimization
_hcs_disable_hier_join_map_nonnull FALSE no hier join map non null
_hcs_disable_inline_tmpl_opt FALSE apply inline single ref top blocks optimization to cell query
_hcs_disable_latest_compat_check FALSE skip compatibility check for latest compatible version
_hcs_disable_level_ord FALSE prune away MAX(MAX(...)) around level order columns
_hcs_disable_level_prune FALSE perform all level pruning
_hcs_disable_level_prune_calc_data_joins FALSE perform level pruning for joins across calc data
_hcs_disable_level_prune_hier_join FALSE perform level pruning from hierarchy joins
_hcs_disable_level_prune_hier_qry FALSE perform level pruning from hierarchy queries
_hcs_disable_level_prune_hierarchize FALSE level prune hierarchize
_hcs_disable_level_prune_in_qry FALSE perform level pruning from level IN conditions
_hcs_disable_level_prune_mbr_lookup FALSE perform level pruning in member lookup queries
_hcs_disable_lvl_vis_lvs_no_tgts_opt FALSE disable level visible leaves no targets optimization
_hcs_disable_materialize FALSE add materialize to result cache hint
_hcs_disable_mdx_cache_hint FALSE generate hcs query mdx cache hints
_hcs_disable_merge_fltr_star_opt FALSE disable merge filter star optimization
_hcs_disable_mv_dense_join_opt FALSE disable move dense join optimization
_hcs_disable_mv_reparse_opt FALSE disable mv reparse optimization
_hcs_disable_mv_rewrite_check FALSE skip MV rewrite check when generating for ANALYTIC VIEW cache
_hcs_disable_no_bdfltrd_opt FALSE apply no base data filtered optimization
_hcs_disable_obj_cache_name FALSE Do not include the object number in an aggregate or level cache
_hcs_disable_opt_cell_qry FALSE optimize cell query
_hcs_disable_opt_estimate FALSE generate opt estimate hints
_hcs_disable_prune_unslvd_star_opt FALSE disable prune unsolved star optimization
_hcs_disable_remote_catalog FALSE disable remote catalog
_hcs_disable_remoteaggr_opt FALSE disable remote aggr optimization
_hcs_disable_result_cache_hint FALSE generate hcs query result cache hints
_hcs_disable_rm_agg_tgt_n_mdxqry_opt FALSE disable remove aggregation targets from no mdx qry optimization
_hcs_disable_rm_like_withs_optz FALSE skip like WITH element removal optimization on generated SQL
_hcs_disable_rm_unused_withs_optz FALSE skip unused WITH element removal optimization on generated SQL
_hcs_disable_smooth_descendants FALSE perform smooth descendants
_hcs_disable_smooth_drill_all FALSE perform smooth drill all
_hcs_disable_smooth_hierarchize FALSE perform hierarchize smoothing
_hcs_disable_smooth_noop_descendants FALSE perform smooth no-op descendants
_hcs_disable_smooth_remove_all FALSE smooth and remove ALL member
_hcs_disable_unnest FALSE disable unnest hint
_hcs_disable_use_cache_star_opt FALSE disable use cache star optimization
_hcs_disable_vector_transform FALSE disable vector transform hint
_hcs_disable_view_merge FALSE disable view merge
_hcs_disable_vis_totals FALSE generate visual totals
_hcs_disable_xform_gby FALSE disable transform group by
_hcs_disable_xjoin_tgt_depths_opt FALSE disable xjoin target depths optimization
_hcs_enable_aggr_opt_estimate FALSE apply OPT_ESTIMATE hint to aggregation queries
_hcs_enable_all_distinct FALSE use distinct instead of rownum=1
_hcs_enable_av_auto_cache TRUE enable AV auto-cache
_hcs_enable_code_trc_call_stack FALSE enable code trace stack
_hcs_enable_cube_join FALSE enable cube join
_hcs_enable_error_on_no_transform FALSE enable error on no transform
_hcs_enable_expose_with_expr FALSE expose internal with_expression
_hcs_enable_fusion_code FALSE enable avtune legacy code path for Fusion
_hcs_enable_in_mem_cdt_hint FALSE add hint opt_param('_in_memory_cdt', 'off')
_hcs_enable_listagg_order FALSE enable listagg order
_hcs_enable_mdx_cache_name_col FALSE add column for mdx cache name
_hcs_enable_mdx_mv_gen FALSE enable mdx mv cache SQL generation
_hcs_enable_mdx_sleep_after_pin FALSE sleep after pinning MDX caches
_hcs_enable_mem_code_trc FALSE enable memory code tracing
_hcs_enable_multi_parent_opt FALSE enable multi-parent optimization
_hcs_enable_no_expand FALSE enable no expand hint
_hcs_enable_parallel_hint FALSE include parallel hint in cell query
_hcs_enable_pred_push TRUE enable optimizer AV predicate pushing via reparse
_hcs_enable_time_code_trc FALSE enable timing code tracing
_hcs_enable_unref_top_chk FALSE enable check for unref top blocks
_hcs_enable_unsupported_calcs FALSE enable unsupported calcs
_hcs_log_max_segments 1000 maximum number of HCS log segments, 0 for unlimited
_hcs_log_segment_size 10 HCS log segment size in MB
_hcs_logging SUMMARY analytic view logging
_hcs_max_mdx_cursors 100 maximum number of MDX cursors
_hcs_mdx_sim_sga_alloc_err NONE simulate mdx sga allocation error
_hcs_mdx_sim_so_fail FALSE simulate state object failure
_hcs_mdx_sleep_loc NONE mdx location to sleep for testing
_hcs_purge_dims_hiers FALSE purge dims and hiers on DDL operations
_hcs_query_hint query hint
_hcs_raise_unexpected_catalog_error FALSE raise unexpected catalog error
_hcs_sim_catalog_error FALSE simulate catalog error
_hcs_sim_no_addrow FALSE simulates missing add row metadata
_hcs_sim_no_chgtrck FALSE simulates missing change tracking table metadata
_hcs_sim_no_cont_obj FALSE simulates missing container_obj# metadata
_hcs_sim_no_dense FALSE simulates missing dense metadata
_hcs_sim_no_dim_outer_join FALSE simulates missing dimension outer join metadata
_hcs_sim_no_joinrel FALSE simulates missing join relationship metadata
_hcs_sim_no_qual_expr FALSE simulates missing qual_expr row in hcs_av_meas$
_hcs_sim_no_trstdcnst FALSE simulates missing trusted constraints metadata
_hcs_sim_pga_expr_parse_err FALSE simulate PGA expression parse error
_hcs_sim_sqlopt_err FALSE simulate sql optimization error
_hcs_stats_max_card 2000000 maximum value for stats cardinality
_heap_dump_timeout 60 timeout in seconds for heap dump
_heartbeat_config NONE TDE heartbeat configuration parameter
_heartbeat_period_multiplier 0 Multiplier for the period of the TDE heartbeat
_heatmap_format_1block FALSE heatmap related - to be used by oracle dev only
_heatmap_min_maxsize 0 Internal testing only
_heur_deadlock_resolution_secs 0 the heuristic wait time per node for deadlock resolution
_hidden_parameter_check_control WARNING diagnostics control for privilege violation
_high_intrinsic_scn_growth_alert 1440 high intrinsic SCN growth rate alert time in minutes
_high_priority_node_instcnt_cap FALSE disable high priority lms when node inst count exceeds cap
_high_priority_processes |LM*|LCK0|CKPT|DBRM| High Priority Process Name Mask
VKRM|RMS0|CR*
_high_threshold_delta 65535 high threshold delta
_highest_priority_processes VKTM|LGWR|LMS*|LM1*| Highest Priority Process Name Mask
LM2*|LM3*|LM4*|LM5*|
LM6*|LM7*|LM8*|LM9*|
RS0*|RS1*|RS2*|CTWR|
LGWR|LMHB|LMS*|LM1*|
LM2*|RS0*|RS1*|RS2*
_highres_drift_allowed_sec 1 allowed highres timer drift for VKTM
_highthreshold_undoretention 31536000 high threshold undo_retention in seconds
_hj_bit_filter_threshold 50 hash-join bit filtering threshold (0 always enabled)
_hm_analysis_oradebug_sys_dump_level 0 the oradebug system state level for hang manager hang analysis
_hm_xm_enabled TRUE If TRUE, DIA0 allows message exchanges across DB/ASM boundary
_hnsw_post_filter_multiply_factor 0 If not 0, Use this as the initial multiplication factor for post filte
_hnsw_post_filter_selectivity 0 If not 0, Use this as the initial selectivity for post filter
_honor_maxfsize_autoextend_on FALSE Honor maxsize of file when autoextend is on
_host_internal_gateway host name of Internal Gateway host
_hpk_compression_range 5 hpk compression range
_hpk_project_cost_weighting 20 hpk project cost weighting
_hpk_throughput_range 5 hpk throughput range
_hstpr_prediction_interval 10080 resource SO prediction interval
_hstpr_use_linear_prediction TRUE use session SO lin-reg prediction
_hstpr_use_periodic_prediction TRUE use session SO periodic prediction
_http_db_service FALSE Use HTTP DB Service
_http_port 0 HTTP port number registered with local listener
_hugetlbfs_SGA_directory @ directory for instance's SGA pseudo files under _hugetlbfs_mount_point
_hugetlbfs_mount_point_for_sga HugeTLBFS mount point to be used
_hw_watchpoint_on TRUE is the HW watchpointing feature turned on?
_hwm_sync_threshold 10 HWM synchronization threshold in percentage
_hybrid_table_hidden_column FALSE enable hidden columns for hybrid table
_iat_frequency_short FALSE Use short interval (5 minutes) for inactive account time job
_idle_session_kill_enabled TRUE enables or disables resource manager session idle limit checks
_idle_session_scan_frequency 60 Idle session scan frequency (in seconds)
_idxrb_rowincr 100000000 proportionality constant for dop vs. rows in index rebuild
_if_not_exists_enabled TRUE enable IF [NOT] EXISTS feature
_ignore_alv_client_outbound_dblink FALSE Ignore ALLOWED_LOGON_VERSION_CLIENT setting for outbound DB Link
_ignore_desc_in_index FALSE ignore DESC in indexes, sort those columns ascending anyhow
_ignore_edition_enabled_for_EV_creation FALSE ignore schema's edition-enabled status during EV creation
_ignore_fg_deps ignore fine-grain dependencies during invalidation
_ignore_pdb_listener FALSE ignore pdb listener
_ignore_spfilemem_nextstartup 0 if TRUE, ignore sp file memory values for the next startup.
_ignore_svc_name_conv_mismatch FALSE Suppress ORA-65174 for service_name_convert clause mismatch
_ilm_mem_limit 10 percentage of the max shared pool heat-map can use - internal
_ilmflush_stat_limit 0 ILM flush statistics limit - Internal testing only
_ilmset_stat_limit 0 ILM set statistics limit - Internal testing only
_ilmstat_memlimit 5 Percentage of shared pool for use by ILM Statistics
_im_graph_table off parameter to control in-memory execution of GRAPH_TABLE
_im_graph_table_exec_control 0 in-memory GRAPH_TABLE execution parameters override
_im_graph_table_max_num_threads 0 number of threads for parallel GRAPH_TABLE in-memory execution
_imado_cdbmem_threshold 95 CDB Memory threshold percent for CDB-AIM action
_imado_diagtasks_log_period 5 IM-ADO diagnostic tasks logging period (in seconds)
_imado_diagtasks_purge_period 30 IM diagnostic tasks purge older than X days
_imado_disable_bg FALSE Disable AIM background task for testing
_imado_disable_cdbaim FALSE Disable CDB AIM
_imado_dml_const 100 AIM DML model overhead constant
_imado_enable_coloptim TRUE Enable AIM Column level optimizations
_imado_enable_imadv TRUE Enable IM Size Advisor View
_imado_enhancements 0 AIM enhancements
_imado_evict_sf 2 AIM evict safety factor
_imado_mem_threshold 98 Memory threshold percent for AIM action
_imado_optim_algo GREEDY Optimization algorithm for AIM
_imado_optimize_period 0 IM-store optimize period for AIM (in minutes)
_imado_sysaux_usage_limit 90 SYSAUX usage percent limit for storing AIM diagnostics
_imado_verification 0 AIM verification state
_image_redo_gen_delay 0 Image redo generation delay in centi-seconds (direct write mode)
_imcu_debug_mode 0 enable debugging for IMCU
_imga_batch_size 1024 Number of elements per task when running graph algorithms
_imga_disable FALSE Disable in-memory execution of graph algorithms
_imgt_enabled FALSE If true, the In-Memory Graph Topology (IMGT) is enabled
_imgt_suppress_gc FALSE If true, the IMGT GC is disabled
_immediate_commit_propagation TRUE if TRUE, propagate commit SCN immediately
_implicit_ssl_wallet TRUE Implicitly use SSL Wallet for UTL_HTTP request
_improved_outerjoin_card TRUE improved outer-join cardinality calculation
_improved_row_length_enabled TRUE enable the improvements for computing the average row length
_imr1_slave 1 IMR1 slave
_imr_active TRUE Activate Instance Membership Recovery feature
_imr_avoid_double_voting TRUE Avoid device voting for CSS reconfig during IMR
_imr_check_css_incarnation_number TRUE IMR verify the global consistency of CSS incarnation number
_imr_controlfile_access_wait_time 10 IMR controlfile access wait time in seconds
_imr_dd_slave_wait_time 30 IMR max time LMON will wait for slave response in seconds
_imr_device_type controlfile Type of device to be used by IMR
_imr_disk_voting_interval 3 Maximum wait for IMR disk voting (seconds)
_imr_diskvote_implementation auto IMR disk voting implementation method
_imr_evicted_member_kill TRUE IMR issue evicted member kill after a wait
_imr_evicted_member_kill_wait 20 IMR evicted member kill wait time in seconds
_imr_extra_reconfig_wait 10 Extra reconfiguration wait in seconds
_imr_highload_threshold IMR system highload threshold
_imr_largest_hub_membership TRUE IMR will derive the largest hub membership from available votes
_imr_max_reconfig_delay 75 Maximum Reconfiguration delay (seconds)
_imr_mount_retry_wait_time 20 IMR mount retry wait time (seconds)
_imr_non_blocking_device_driver TRUE Use the Non Blocking IMR Device Driver Implementation
_imr_remount_retry_wait_time 60 IMR remount retry wait time in (seconds)
_imr_rim_mount_device FALSE Enable rim instances to mount IMR device driver
_imr_rr_holder_kill_time 300 IMR max time instance is allowed to hold RR lock in seconds
_imr_slave_debug 0 IMR slave debug flags
_imr_splitbrain_res_wait 0 Maximum wait for split-brain resolution (seconds)
_imr_systemload_check TRUE Perform the system load check during IMR
_imtxn_table_enable TRUE is In-Memory Txn Table cache enabled
_imtxn_table_flags 3 In-Memory Txn Table cache flags
_imtxn_table_max_inc_per_slt 1 In-Memory Txn Table number of incarnations per slot
_imtxn_table_max_slts_per_seg 34 In-Memory Txn Table Slots per Undo Segment
_imtxn_table_max_undo_segs 1024 In-Memory Txn Table Max Undo Segments in Cache
_imtxnrma_table_enable FALSE is In-Memory RMA Txn Table cache enabled
_imtxnrma_table_flags 0 In-Memory RMA Txn Table cache Flags
_imu_pools 3 in memory undo pools
_in_memory_cdt LIMITED In Memory CDT
_in_memory_cdt_maxpx 4 Max Parallelizers allowed for IMCDT
_in_memory_cleanup_wait_timeout 10000 Tiemout for IMCDT cleanup waiting for end of scan
_in_memory_memory_threshold 40 In Memory CDT memory threshold
_in_memory_tbs_search TRUE FALSE - disable fast path for alter tablespace read only
_in_memory_ts_only OFF In Memory CDT use temp segment only
_in_memory_undo TRUE Make in memory undo for top level transactions
_increase_lmd_process 0 modifying this hidden parameter, will modify the numberof lmd process
_increase_lms_process 0 modifying this hidden parameter, will modify the numberof lms process
_incremental_purge_size 200 Setting for AWR Incremental Purge Size
_incremental_recovery_ckpt_min_batch 500 minimum number of writes for incremental recovery ckpt every second
_index_branch_block_check TRUE Perform block checking on branch index blocks
_index_coalesce_delete_block_only FALSE index coalesce mode to only delete empty leaf blocks
_index_coalesce_max_redo_size_target 0 target for maximum redo generated by index coalesce
_index_debug_mode 0 enable debug for the index layer
_index_join_enabled TRUE enable the use of index joins
_index_load_analysis_frequency 4 index load compression analysis frequency
_index_load_block_check FALSE Perform block checking during direct load of index blocks
_index_load_buf_oltp_over_retry 0 index load buf and comp oltp over-estimation retry
_index_load_buf_oltp_sacrifice_pct 10 index load buf oltp sacrifice pct
_index_load_buf_oltp_under_pct 85 index load buf and comp oltp under-estimation pct
_index_load_last_leaf_comp 85 index load write last leaf compression threshold
_index_load_min_key_count 10 index load min key count for first compression
_index_max_inc_trans_pct 20 max itl expand percentage soft limit during index insert
_index_mvi_oltp_advanced_high FALSE enable compression advanced high for multi-value indexes
_index_partition_large_extents FALSE Enables large extent allocation for partitioned indices
_index_partition_shrink_opt TRUE enable alter index modify partition shrink optimization
_index_pk_using_nonunique FALSE index primary key using non unique index
_index_prefetch_factor 100 index prefetching factor
_index_relax_unique_const FALSE index relax unique index constraint
_index_scan_check_skip_corrupt FALSE check and skip corrupt blocks during index scans
_index_scan_check_stopkey FALSE check stopkey during index range scans
_index_split_chk_cancel 5 index insert split check cancel
_indexable_con_id TRUE indexing of CON_ID column enabled for X$ tables
_indoubt_pdb_transactions_force_outcome COMMIT commit force or rollback force during undo mode switch
_inet_cluster_interconnects InetTable Cluster Interconnects
_influx_scn_wait_timeout 1 active dataguard influx scn wait time in centiseconds
_influx_scn_waits 100000 active dataguard influx scn maximum waits
_init_granule_interval 10 number of granules to process for deferred cache
_init_sql_file ?/rdbms/admin/sql.bs File containing SQL statements to execute upon database creation
q
_inject_simulated_error_period 131072 if non-zero, inject IO error once every param_value times
_inject_startup_fault 0 inject fault in the startup code
_inline_sql_in_plsql FALSE inline SQL in PL/SQL
_inmemory_64k_percent 30 percentage of in-memory area for 64k pools
_inmemory_adg_batched_flush TRUE If true, batched flush is performed
_inmemory_adg_journal_quota FALSE If true, throttled mining is performed under space pressure
_inmemory_adg_parallel_flush TRUE If true, parallel flush is performed
_inmemory_adg_periodic_sort FALSE If true, periodic sort is performed
_inmemory_adg_quiesce_timeout 2 timeout for getting ZQ enq
_inmemory_adjust_overprovisioning 1 IMA background overprovisioning shrink
_inmemory_analyzer_optimize_for 0 inmemory analyzer optimize for
_inmemory_area_autotune TRUE if TRUE, allow imc to grow/shrink in broker's auto tuning.
_inmemory_auto_distribute TRUE If true, enable auto distribute
_inmemory_autodist_2safe FALSE If true, enable auto distribute with 2safe
_inmemory_bf_disable_threshold 0 Threshold to disable IM bloom filter
_inmemory_bg_max_growstep 134217728 max grow step size for im grow in bg
_inmemory_bg_resize_frequency 4 IMA background resize task frequency in minutes
_inmemory_bg_resize_limit 64 IMA background resize per task limit in GB
_inmemory_bg_resize_target_sga_percent 50 IMA max background resize target as SGA percent
_inmemory_buffer_waittime 100 wait interval for one SMU or IMCU to be freed
_inmemory_check_prot_meta FALSE If true, marks SMU area read only to prevent stray writes
_inmemory_checksum FALSE If true, checksums in-memory area to detect stray writes
_inmemory_crclone_buffer_size 131072 In-memory CR Clone buffer size
_inmemory_crclone_min_clones 6 In-memory CR Clone minimum number of clones
_inmemory_crclone_min_space_percent 50 In-memory CR Clone minimum space percentage
_inmemory_crclone_threshold_rows 100 In-memory CR Clone threshold rows
_inmemory_credential 0 Enable in-memory resource principals
_inmemory_cu_checksum FALSE If true, checksums CU to detect stray writes
_inmemory_cudrop_timeout 1000 maximum wait time for IMCU to be freed during drop
_inmemory_dbg_retry_ext FALSE Debug retry load inmemory extern table
_inmemory_dbg_scan 0 In-memory scan debugging
_inmemory_deepvec_transform DISABLED Enable plan transformation for in-memory deep vectorization
_inmemory_default_flags 8459 Default flags based on inmemory_clause_default
_inmemory_default_new FALSE Force in-memory on new tables
_inmemory_default_svc 0 Default In-Memory distribute service type for new tables
_inmemory_default_svcname Default In-Memory distribute service name for new tables
_inmemory_delta_population 0 Control Delta IMCU population
_inmemory_direct_reads 1 direct-reads for SMUs population repopulation
_inmemory_disable_alter_imco_cycle FALSE in-memory disable alter imco cycle
_inmemory_disable_selective_vircols FALSE disable selective columns for VCs/IMEs
_inmemory_distribute_ondemand_timeout 300 On demand timeout for redistribute
_inmemory_distribute_timeout 300 If true, enable auto distribute with 2safe
_inmemory_drcancel_cu_percent 80 IMCU percentage threshold to switch from DR to BC
_inmemory_dynamic_scan_disable_threshold 20 Inmemory dynamic scan disable threshold
_inmemory_dynamic_scans AUTO Enable IM Dynamic Scans
_inmemory_dynamic_scans_analyze_batch_size 5 Inmemory dynamic scan analyze batch size
_inmemory_dynamic_scans_batch_size 500 Number of steady state outstanding tasks
_inmemory_dynamic_scans_dbg 0 Inmemory dynamic scans debug
_inmemory_dynamic_scans_result_buffers 5000 No. of LWT allocated result buffers per thread
_inmemory_enable_bg_resize 0 IMA enable background resize operation
_inmemory_enable_bg_step_grow 0 IMA enable background resize step grow
_inmemory_enable_population_verify 1 verify in-memory population
_inmemory_enable_readonly TRUE Enable Inmemory on read only DB instance
_inmemory_enable_shrink 1 IMA enable shrink support
_inmemory_enable_stat_alert FALSE dump in-memory stats in alert log file
_inmemory_enable_sys FALSE enable in-memory on system tablespace with sys user
_inmemory_enable_tiny_im FALSE IMA enable tiny IM support
_inmemory_enabled FALSE enable in-memory
_inmemory_exclto_timeout 100 maximum wait time to pin SMU for cleanout
_inmemory_expression_count 20 IME number of expressions to lookup from the ESS
_inmemory_expressions_area_percent 10 percentage of in-memory area for IMEUs
_inmemory_expressions_mark_unused FALSE Mark cold IME expressions unused instead of no inmemory
_inmemory_ext_roarea 0 size in bytes of inmemory rw extension area
_inmemory_ext_rwarea 0 size in bytes of inmemory rw extension area
_inmemory_external_table TRUE Enable inmemory extern table
_inmemory_faststart_control_flags 0 in-memory faststart control flags
_inmemory_force_fs FALSE in-memory faststart force
_inmemory_force_fs_tbs SYSAUX in-memory faststart force tablespace
_inmemory_force_fs_tbs_size 1073741824 in-memory faststart force tablespace size
_inmemory_force_jgca_resizing 0 Inmemory Force Join Group Code Array Resizing
_inmemory_force_non_engineered FALSE force non-engineered systems in-memory behavior on RAC
_inmemory_format_compatible 23.7.0.0.0 In-memory format compatibility parameter
_inmemory_fs_blk_inv_blk_percent 50 in-memory faststart CU invalidation threshold(blocks)
_inmemory_fs_blk_inv_blkcnt in-memory faststart CU invalidation threshold(blocks)
_inmemory_fs_dmlverify_read_ahead_cnt 10 in-memory faststart dmlverify read ahead count
_inmemory_fs_enable TRUE in-memory faststart enable
_inmemory_fs_enable_blk_lvl_inv TRUE in-memory faststart enable block level invalidation
_inmemory_fs_imco_timeout 120000 InMemory FastStart IMCO wait timeout in Gen-0
_inmemory_fs_nodml FALSE in-memory faststart assumes no dmls while populating
_inmemory_fs_prune_pct 10 in-memory faststart out of mem prune percent
_inmemory_fs_raise_error FALSE in-memory faststart raise error
_inmemory_fs_tbsmaxsz in-memory faststart tablespace maximum size
_inmemory_fs_test_flags 0 InMemory FastStart testing flags
_inmemory_fs_verify FALSE in-memory faststart verify
_inmemory_fsdw_cnt 2147483647 in-memory faststart defer writes per cycle
_inmemory_fsdw_enable TRUE in-memory faststart deferwrite enable
_inmemory_fsdw_inline FALSE in-memory faststart deferwrite inline
_inmemory_fsdw_maxcnt 10 in-memory faststart max defer writes per cycle
_inmemory_fsdw_maxmem 104755200 in-memory faststart max defer writes memory cap
_inmemory_fsdw_on_populate TRUE in-memory faststart deferwrite on populate
_inmemory_fsdw_penalty_threshold 20 in-memory faststart deferwrite penalty threshold
_inmemory_fsdw_populate_threshold_multiplier 10 in-memory faststart deferwrite populate threshold multiplier
_inmemory_fsdw_priority_penalty_percent 10 In-memory faststart defer write percent priority for penalized
_inmemory_fsdw_priority_population_percent 100 In-memory faststart defer write percent priority for population
_inmemory_fsdw_priority_repopulation_percent 90 In-memory faststart defer write percent priority for repopulation
_inmemory_fsdw_schedlrtm 1 in-memory faststart defer write scheduler cycle (sec)
_inmemory_fsdw_scheduler_dedicated FALSE in-memory faststart defer write dedicated scheduler
_inmemory_fsdw_task_timeout 20 in-memory faststart defer writes task timeout (sec)
_inmemory_fsdw_threshold 300 In-memory faststart defer write minimum interval (millisec)
_inmemory_gd_sym_dict_flags 1 Inmemory GD symbol dictionary flags
_inmemory_granule_size 134217728 In-memory granule size
_inmemory_graph_pop_fg FALSE If true, all graph populations are performed in foreground
_inmemory_grpcolinv_buffer_size 131072 In-memory grpcolinv buffer size
_inmemory_grpcolinv_granularity 1 In-memory grpcolinv blks per colmap
_inmemory_hpk4sql_debug 0 In-Memory HPK4SQL debug
_inmemory_hpk4sql_filter_threshold 1 In-Memory HPK4SQL filter threshold
_inmemory_hpk4sql_flags 0 In-Memory HPK4SQL flags
_inmemory_hpk4sql_kv_seg_size 21 In-Memory HPK4SQL kv segment size
_inmemory_hpk4sql_partbuf_maxrow 1024 In-Memory HPK4SQL partbuf maxrow
_inmemory_hpk4sql_partbuf_minrow 8 In-Memory HPK4SQL partbuf minrow
_inmemory_hpk4sql_pushdown_level 65535 In-Memory HPK4SQL maximun pushdown level
_inmemory_hwm_expand_percent 20 max blks percent can exceed in hwmimcu
_inmemory_hwm_expansion 1 If 0, the highwatermark CU is dropped when expanded
_inmemory_hwm_expansion_rac 0 If 0, the highwatermark CU is dropped when expanded
_inmemory_hwm_inv_blocks_threshold 64 If 0, expansion will occur even for very small hwm imcu
_inmemory_hybrid_selectivity_threshold 37 Selectivity threshold for a qualifying query to enable hybrid IM scans
_inmemory_hybridexa_enable TRUE Inmemory Hybrid Exa Enabled
_inmemory_imco_cycle 120 IMCO cycle in seconds (sleep period)
_inmemory_imcu_align TRUE Enforce 8M IMCU alignment
_inmemory_imcu_populate_minbytes 5242880 minimum free space in IMA for populating IMCU
_inmemory_imcu_source_analyze_bytes 134217728 number of source analyze bytes per IMCU
_inmemory_imcu_source_blocks 0 number of source blocks per IMCU
_inmemory_imcu_source_extents 0 number of source extents per IMCU
_inmemory_imcu_source_maxbytes 0 IMCU maximum source size in bytes
_inmemory_imcu_source_minbytes 1048576 number of minimum source bytes per IMCU
_inmemory_imcu_target_bytes 0 IMCU target size in bytes
_inmemory_imcu_target_maxrows 8388608 IMCU maximum target number of rows
_inmemory_imcu_target_rows 0 IMCU target number of rows
_inmemory_ime_increpop_threshold 1 Invalidation threshold for IME incremental repopulation
_inmemory_incremental_repopulation TRUE If true, incremental repopulation of IMCU will be attempted
_inmemory_invalidate_cursors TRUE In-memory populate enable cursor invalidations
_inmemory_jgbvt_slotsz 6 Inmemory Join Group Bit Vector Table Segment Slot Size Exp
_inmemory_journal_check 0 Depending on value does one of the DML verifications
_inmemory_journal_cla_stride 4 inmemory journal format cla stride
_inmemory_journal_format 1 inmemory journal format options
_inmemory_journal_row_logging FALSE If true, log the entire row into the in-memory journal
_inmemory_journal_scan 0 inmemory journal scan enable
_inmemory_journal_scan_format TRUE If true, the set journal format will be used for scan
_inmemory_lock_for_smucreate FALSE take object lock during smu creation
_inmemory_log_level 0 in-memory log level
_inmemory_max_delta 5 Inmemory max number of deltas per CU
_inmemory_max_expressions_table 50 IME maximum number of SYS_IME VCs in a table
_inmemory_max_pga_usage_percent 50 Allowed PGA usage for IME creation as a percent of hard maximum
_inmemory_max_pga_usage_percol 20 Allowed PGA usage (in MB) for IME creation per column
_inmemory_max_populate_retry 3 IM populate maximum number of retry
_inmemory_max_queued_tasks 0 Maximum queued populating tasks on the auxiliary queue
_inmemory_memprot FALSE enable or disable memory protection for in-memory
_inmemory_metadata_pct 0 controls the pct of IM metadata space
_inmemory_min_delta_blocks 50 Inmemory minimum blocks per delta
_inmemory_min_delta_rows 255 Inmemory minimum rows per delta
_inmemory_min_ima_defersize 0 Defer in-memory area allocation beyond this size
_inmemory_num_hash_latches 256 Maximum number of latches for IM buffers
_inmemory_opaque_contig_space_percent 80 Contiguous memory for opaque VC as a percent of hard maximum
_inmemory_optimized_date_options 6 Creates hidden virtual columns for accelerating date queries
_inmemory_parallel_jghj_enabled TRUE Inmemory Parallel Join Group aware HJ
_inmemory_parallel_load_ext TRUE Parallel load inmemory extern table
_inmemory_partrowlock_threshold 10 Number of committed rows that stay not cleaned out
_inmemory_patch_background_blocks 200 In-memory SMU patch threshold blocks to start background tasks
_inmemory_patch_commit_path FALSE If true, enable the SMU patching from DML path
_inmemory_patch_threshold_blocks 25 In-memory SMU patch threshold blocks
_inmemory_pct_inv_blocks_invalidate_imcu 100 In-memory percentage invalid blocks for IMCU invalidation
_inmemory_pct_inv_rows_invalidate_imcu 50 In-memory percentage invalid rows for IMCU invalidation
_inmemory_pga_per_server 536870912 minimum pga needed per inmemory populate server
_inmemory_pin_hist_mode 16 settings for IM pinned buffer history
_inmemory_populate_blocks_threshold 8 If 0, scan triggers populate for any missing blocks
_inmemory_populate_fg FALSE populate in foreground
_inmemory_populate_grow_trigger_percent 10 IMA trigger for populate size grow as percent of available space
_inmemory_populate_task_self_exec 0 In-Memory racgd populate tasks self execution
_inmemory_populate_test_flags 0 In-memory populate test flags
_inmemory_populate_wait FALSE wait for population to complete
_inmemory_populate_wait_max 600 maximum wait time in seconds for segment populate
_inmemory_prefer_xmem_memcompress Prefer to store tables with given memcompress levels in xmem
_inmemory_prefer_xmem_priority Prefer to store tables with given priority levels in xmem
_inmemory_prefix_encode_dsbs FALSE Prefix-encode the DSB-dictionary
_inmemory_prepopulate TRUE Enable inmemory populate by IMCO
_inmemory_prepopulate_fg 0 Force prepopulate of in-memory segment in foreground
_inmemory_private_journal_aonumbkts 16 Number of priv jrnl anchor object ht bkts
_inmemory_private_journal_dynamic TRUE If true, dynamic sizing will be enabled
_inmemory_private_journal_grplen 64 Number of blocks per PJ group
_inmemory_private_journal_maxexts 5000000 Max number of extents per PJ
_inmemory_private_journal_numbkts 2048 Number of priv jrnl ht bkts
_inmemory_private_journal_numgran 32 Number of granules per HT node
_inmemory_private_journal_quota 100 quota for transaction in-memory private journals
_inmemory_private_journal_sharedpool_quota 20 quota for transaction in-memory objects
_inmemory_pruning ON In-memory pruning
_inmemory_query_check 0 In-memory query checking
_inmemory_query_fetch_by_rowid FALSE In-memory fetch-by-rowid enabled
_inmemory_query_scan TRUE In-memory scan enabled
_inmemory_racgd_flags 0 Inmemory distributed GD flags
_inmemory_racgd_msg_threshold 60 In-Memory Racgd add message threshold
_inmemory_racgd_verify_populate FALSE Inmemory RACGD Populate Verify
_inmemory_relimcusz_thresh 25 in-memory relative imcusz thresh for direct reads
_inmemory_repopulate_disable 2 disable In-memory repopulate
_inmemory_repopulate_flags 2 In-memory repopulate decision flags
_inmemory_repopulate_invalidate_rate_percent 0 In-memory repopulate invalidate rate percent
_inmemory_repopulate_optimize TRUE If true, itl transfer will be attempted during repopulation of IMCU
_inmemory_repopulate_priority_scale_factor 100 In-memory repopulate priority threshold scale factor
_inmemory_repopulate_priority_threshold_block 320 In-memory repopulate priority threshold block
_inmemory_repopulate_priority_threshold_row 160 In-memory repopulate priority threshold row
_inmemory_repopulate_threshold_blocks In-memory repopulate threshold number of modified blocks
_inmemory_repopulate_threshold_blocks_percent 10 In-memory repopulate threshold blocks invalid percentage
_inmemory_repopulate_threshold_mintime 0 In-memory repopulate minimum interval (millisec)
_inmemory_repopulate_threshold_mintime_factor 5 In-memory repopulate minimum interval (N*timetorepop)
_inmemory_repopulate_threshold_rows In-memory repopulate threshold number of modified rows
_inmemory_repopulate_threshold_rows_percent 5 In-memory repopulate threshold rows invalid percentage
_inmemory_repopulate_threshold_scans 0 In-memory repopulate threshold number of scans
_inmemory_retention_time 120 maximum retention time of imcu after repopulation
_inmemory_rows_check_interrupt 1000 Number of rows buffered before interrupt check
_inmemory_rw_pool 5 controls the use of the IM rw pool
_inmemory_scan_invalid_percent 30 Inmemory scan invalid percentage
_inmemory_scan_override FALSE In-memory scan override
_inmemory_servers_throttle_pgalim_percent 55 In-memory populate servers throttling pga limit percentage
_inmemory_shared_journal_maxexts 1024 Max number of extents per SJ
_inmemory_shared_journal_minexts_repop 256 min number of extents per SJ to trigger repop
_inmemory_shrink 0 In-memory shrink
_inmemory_shrink_cleanout_timeout 180 IMCO shrink cleanout timeout
_inmemory_shrink_control_flags 0 In-memory shrink control flags
_inmemory_shrink_gc_retries 3 In-memory shrink gc retries
_inmemory_shrink_test_flags 0 In-memory shrink test flags
_inmemory_size_enable_shrink TRUE if TRUE, allow broker to shrink imc during auto tuning.
_inmemory_small_segment_threshold 65536 In-memory small segment threshold (must be larger for in-memory)
_inmemory_smu_patch_options 7 Inmemory SMU patching options
_inmemory_strdlxid_timeout 0 max time to determine straddling transactions
_inmemory_subcu_histsize 0 In-memory subCU Histogram size
_inmemory_subcusize 512 In-memory subCU size
_inmemory_succesive_bg_rsz_interval 9000 broker inmemory resize success intervals .
_inmemory_suppress_vsga_ima FALSE Suppress inmemory area in v$sga
_inmemory_test_verification 0 In-memory verification testing
_inmemory_transaction_options 10998 in-memory transaction performance options
_inmemory_trickle_populate TRUE Enable inmemory trickle populate
_inmemory_trickle_repopulate TRUE Enable inmemory trickle repopulate
_inmemory_trickle_repopulate_fg 0 Trickle Repopulate in the Foreground
_inmemory_trickle_repopulate_min_interval 300 IMCO Trickle Repopulate Interval
_inmemory_trickle_repopulate_threshold_dirty_ratio 0 IMCO Trickle Repopulate threshold dirty ratio
_inmemory_txn_checksum 0 checksum for SMUs and private journals
_inmemory_txnpjrnl_debug 0 txn priv jrnl debugging parameter
_inmemory_validate_fetch FALSE If true, validate single-row fetch between in-memory and disk
_inmemory_vector_encode_override FALSE Populate and use DSBs for Vector Encode columns
_inmemory_waitinvis_count 8 in-memory waitinvisible retry count
_inmemory_xmem_size 0 size in bytes of in-memory xmem area
_inmemory_xt_virtual_columns DISABLE Controls which user-defined VCs in external tables are stored in-memor
_inplace_update_retry TRUE inplace update retry for ora1551
_inquiry_retry_interval 3 if greater than 0 enables inquiry retry after specified interval
_insert_enable_hwm_brokered TRUE during parallel inserts high water marks are brokered
_inst_locking_period 5 period an instance can retain a newly acquired level1 bitmap
_instance_dbnest_name Instance dbNest Name
_instance_recovery_bloom_filter_buffer_size 4096 Bloom filter buffer size (in bytes) used during claim phase
_instance_recovery_bloom_filter_fprate 0.01 Allowable false positive percentage (0.001% to 100.00%)
_instance_recovery_bloom_filter_size 1048576 Bloom filter size (in bytes) used during claim phase
_instance_recovery_bloom_size_ratio 0.0003 Ratio that scales the size of the bloom filter based on the shared poo
_instant_file_create FALSE enable instant file creation on sparse media
_instant_file_create_exascale FALSE enable instant file creation on Exascale
_intra_cdb_dblink FALSE enable intra CDB implicit dblink
_intrapart_pdml_enabled TRUE Enable intra-partition updates/deletes
_intrapart_pdml_randomlocal_enabled TRUE Enable intra-partition updates/deletes with random local dist
_invalidate_upon_revoke TRUE Invalidate all dependent objects upon revoke
_io_internal_test 0 I/O internal testing parameter
_io_osd_param 1 OSD specific parameter
_io_outlier_threshold 500 Latency threshold for io_outlier table
_io_resource_manager_always_on FALSE io resource manager always on
_io_shared_pool_size 4194304 Size of I/O buffer pool from SGA
_io_slaves_disabled FALSE Do not use I/O slaves
_io_statistics TRUE if TRUE, ksfd I/O statistics are collected
_iocalibrate_init_ios 2 iocalibrate init I/Os per process
_iocalibrate_max_ios 0 iocalibrate max I/Os per process
_ioq_fanin_multiplier 2 IOQ miss count before a miss exception
_ior_serialize_fault 0 inject fault in the ior serialize code
_iorm_tout 1000 IORM scheduler timeout value in msec
_ios_root_directory IOS IOS default root directory
_ioslave_batch_count 1 Per attempt IOs picked
_ioslave_issue_count 500 IOs issued before completion check
_iot_overflow_tblspace_user_default FALSE creates IOT overflow segment in user's default tablespace
_ipacl_feature_control_flags 1 0x01 - enable ACL feature
_ipc_aggr_limit_percentage 40 KSIPC memory as a percentage of PGA aggregate limit
_ipc_config_opts_dyn 0 Dyn config for ipclw startup
_ipc_config_opts_stat 0 static config for ipclw startup
_ipc_emu_aop_timeout 0 static emu AOP tinmeout
_ipc_fail_network 0 Simulate cluster network failer
_ipc_switch_reconfig_needed FALSE to trigger a ipc switch reconfiguration
_ipc_test_failover 0 Test transparent cluster network failover
_ipc_test_mult_nets 0 simulate multiple cluster networks
_ipc_trace_limit Configure LOG trace limits per second for IPC
_iut_enable TRUE Control Index usage tracking
_iut_max_entries 30000 Maximum Index entries to be tracked
_iut_stat_collection_type SAMPLED Specify Index usage stat collection type
_j0_deq_maxwait_time 0 max wait for dequeues scheduled via scheduler jobs
_jg_enable_limit FALSE Control wether the job queue limit should be enfoced for a pdb
_jg_limit_min_free_procs 1 Control how many available job processes are needed for reading from d
_jg_limit_poll_time_csecs 6000 Control polling time for a retry if pdb was over job queue limit, in c
_jg_queue_limit 2 Control how many jobs can a single pdb put in the job queue.This is th
_job_notification_handler_owners List of schemas allowed to own job notification handler
_job_queue_interval 5 Wakeup interval in seconds for job queue co-ordinator
_jobs_allowed_for_common_user FALSE enable/disable common user jobs to run when job_queue_processes=0
_jobs_disable_common_admin_privs FALSE Disable common administrative privileges for jobs
_json_qryovergen_rewrite TRUE enable/disable JSON query over generation function rewrite
_k2q_latches 0 number of k2q latches
_ka_allow_reenable FALSE reenability of kernel accelerator service after disable
_ka_compatibility_requirement all kernel accelerator compatibility operation requirement
_ka_doorbell 0 kernel accelerator doorbell mode
_ka_enabled FALSE Enable/disable kernel accelerator
_ka_grant_policy AUTO KA grant policy to favor fusion grant, make it automatic, or favor KA
_ka_lma_msg_wait_count 100 KA maximum number of requests to retrieve per OSD wait by LMA
_ka_lma_wait_time 200 KA wait time for skjcxWait call by LMA process in microseconds
_ka_locks_per_sector 12 locks per sector in kernel accelerator
_ka_max_wait_delay 1000 KA maximum amount of time before forcing OSD wait call
_ka_mode 0 kernel accelerator mode
_ka_msg_reap_count 40 maximum number of KA messages to receive and process per wait
_ka_msg_wait_count 20 KA maximum number of requests to retrieve per OSD wait
_ka_pbatch_messages TRUE kernel accelerator perform pbatch messages
_ka_scn_accel_shrmem TRUE KA SCN accelerate shr memory
_ka_scn_enabled FALSE KA SCN processing enabled
_ka_scn_use_ka_msgs TRUE KA SCN use KA type messages
_kcb_reused_max 16384 reused array max parameter
_kcbl_assert_reset_slot TRUE assert slot state in kcblResetSlot
_kcc_aging_cool_count 1 Touch count set when buffer cooled
_kcc_aging_freeze_cr FALSE Make buffers always be too cold to keep in cache
_kcc_aging_hot_criteria 2 Touch count which sends a buffer to head of replacement list
_kcc_aging_stay_count 0 Touch count set when buffer moved to head of replacement list
_kcc_aging_touch_time 3 Touch count which sends a buffer to head of replacement list
_kcc_percent_hot_default 50 Percent of default buffer pool considered hot
_kcfis_automem_level 1 Set auto memory management control for kcfis memory allocation
_kcfis_block_dump_level 0 Smart IO block dump level
_kcfis_byteswap_opt_disabled FALSE Don't use byte swapping optimization on the storage cell
_kcfis_caching_enabled TRUE enable kcfis intra-scan session caching
_kcfis_cell_passthru_dataonly TRUE Allow dataonly passthru for smart scan
_kcfis_cell_passthru_enabled FALSE Do not perform smart IO filtering on the cell
_kcfis_cell_passthru_fromcpu_enabled TRUE Enable automatic passthru mode when cell CPU util is too high
_kcfis_cellcache_disabled FALSE Don't use cellcache rewrite optimization on the storage cell
_kcfis_celloflsrv_passthru_enabled FALSE Enable offload server usage for passthru operations
_kcfis_celloflsrv_usage_enabled TRUE Enable offload server usage for offload operations
_kcfis_combine_md_maps_payload 1 enable combining MD and MAPs in single payload
_kcfis_control1 0 Kcfis control1
_kcfis_control2 0 Kcfis control2
_kcfis_control3 0 Kcfis control3
_kcfis_control4 0 Kcfis control4
_kcfis_control5 0 Kcfis control5
_kcfis_control6 0 Kcfis control6
_kcfis_disable_platform_decryption FALSE Don't use platform-specific decryption on the storage cell
_kcfis_dump_corrupt_block TRUE Dump any corrupt blocks found during smart IO
_kcfis_fast_response_enabled TRUE Enable smart scan optimization for fast response (first rows)
_kcfis_fast_response_initiosize 2 Fast response - The size of the first IO in logical blocks
_kcfis_fast_response_iosizemult 4 Fast response - (next IO size = current IO size * this parameter)
_kcfis_fast_response_threshold 1048576 Fast response - the number of IOs after which smartIO is used
_kcfis_fastfileinit_disabled FALSE Don't use ffi during file creation
_kcfis_fault_control 0 Fault Injection Control
_kcfis_fctempopt_mode 1 KCFIS FC Temp Drop FC Optimization Control
_kcfis_io_prefetch_size 8 Smart IO prefetch size for a cell
_kcfis_ioreqs_throttle_enabled TRUE Enable Smart IO requests throttling
_kcfis_ivfscan_fd_max_cache_sz 100 Number of IVF scan FDs cached
_kcfis_ivfscan_fd_max_num_reuse 50 Number of times IVF scan FDs are reused
_kcfis_ivfscan_opt_enabled TRUE enable IVF scan optimizations
_kcfis_kept_in_cellfc_enabled TRUE Enable usage of cellsrv flash cache for kept objects
_kcfis_large_payload_enabled FALSE enable large payload to be passed to cellsrv
_kcfis_largemd_bfquota_kb 16384 Smart IO operation bloom filter metadata size in KBs
_kcfis_largemd_compressed_kb 20480 Smart IO operation maximum compressed metadata size in KBs
_kcfis_largemd_enabled TRUE Smart IO operation large metadata supported enabled
_kcfis_max_cached_sessions 10 Sets the maximum number of kcfis sessions cached
_kcfis_max_ioctl_buffers 100 Sets the maximum number of IOCTL buffers in kcfis
_kcfis_max_out_translations 5000 Sets the maximum number of outstanding translations in kcfis
_kcfis_nonkept_in_cellfc_enabled FALSE Enable use of cellsrv flash cache for non-kept objects
_kcfis_oss_io_size 0 KCFIS OSS I/O size
_kcfis_partner_read_enabled TRUE Smart IO operation partner read enabled
_kcfis_pmem_enabled TRUE RDMA Persistent Memory support enabled
_kcfis_qm_prioritize_sys_plan TRUE Prioritize Quarantine Manager system plan
_kcfis_qm_user_plan_name Quarantine Manager user plan name
_kcfis_rdbms_blockio_enabled FALSE Use block IO instead of smart IO in the smart IO module on RDBMS
_kcfis_read_buffer_limit 0 KCFIS Read Buffer (per session) memory limit in bytes
_kcfis_spawn_debugger FALSE Decides whether to spawn the debugger at kcfis initialize
_kcfis_stats_level 0 sets kcfis stats level
_kcfis_storageidx_diag_mode 0 Debug mode for storage index on the cell
_kcfis_storageidx_disabled FALSE Don't use storage index optimization on the storage cell
_kcfis_storageidx_set_membership_disabled FALSE Don't use set membership optimization on the storage cell
_kcfis_storageidx_xtss_disabled FALSE Don't use storage index optimization on the storage cell for XTSS
_kcfis_test_control1 0 kcfis tst control1
_kcfis_trace_bucket_size 131072 KCFIS tracing bucket size in bytes
_kcfis_xtgran_prefetch_count 1 External Table Smart Scan granule prefetch count
_kcl_debug TRUE if TRUE, record le history
_kcl_index_split TRUE if TRUE, reject pings on blocks in middle of a split
_kcmi_debug 0 Use alert log instead of debug.log
_kcrfwrma_flags 0 KCRFWRMA Flags
_kd_dbg_control 0 kernel data generic control
_kd_rows_chk TRUE enable or disable row block check
_kd_symtab_chk TRUE enable or disable symbol table integrity block check
_kdbl_enable_post_allocation FALSE allocate dbas after populating data buffers
_kdfip_bufl_nbkt 128 memopt w buffers list buckets
_kdfip_cmap_nbkt 16 memopt w chunk map buckets
_kdfip_debug 0 memopt w debug
_kdfip_drain_sleeps 60 memopt w drain coord sleep count
_kdfip_elem_nclatch 64 memopt w chunkmap elem child latches
_kdfip_flush_nrows 2147483647 memopt w flush num rows
_kdfip_flush_rowsz 1048576 memopt w flush row size
_kdfip_flush_rowtm 60 memopt w flush time
_kdfip_iga_adpt_amm_intr 30 memopt w adaptive memory manager task internval
_kdfip_iga_adpt_dec_ldpr 50 memopt w adaptive decrement load percent
_kdfip_iga_adpt_dec_pr 5 memopt w adaptive decrement percent
_kdfip_iga_adpt_inc_ldpr 75 memopt w adaptive increment load percent
_kdfip_iga_adpt_inc_pr 25 memopt w adaptive increment percent
_kdfip_iga_adpt_maxsz 0 memopt w max adaptive global area size
_kdfip_iga_adpt_mem_ret 3 memopt w global area memory retention cycle
_kdfip_iga_bufsz 1048576 memopt w write buffer size
_kdfip_iga_maxsz 2147483648 memopt w max global area size
_kdfip_iga_minsz 268435456 memopt w min global area size
_kdfip_par_flush TRUE memopt w parallel flush
_kdfip_trace FALSE memopt w tracing on-off
_kdfs_fix_control 0 dbfs fix_control
_kdfs_timer_dmp FALSE dbfs timers
_kdfs_trace 1 dbfs trace level
_kdfs_trace_size 131072 size of the uts buffer for generic traces
_kdi_avoid_block_checking FALSE avoid index block checking on sensitive opcodes
_kdic_segarr_sz 0 size threshold for segmented arrays for seg_info_kdicctx
_kdis_reject_level 24 b+tree level to enable rejection limit
_kdis_reject_limit 5 #block rejections in space reclamation before segment extension
_kdis_reject_ops FALSE enable rejection heuristic for branch splits
_kdis_split_xid_prune TRUE prune xids during an index split
_kdivcc_test_flags 0 Covering Column test
_kdivs_test_null_hnsw_snaphot FALSE If true, KDIVS receive a NULL snapshot during HNSW index search
_kdizoltp_uncompsentinal_freq 16 kdizoltp uncomp sentinal frequency
_kdkv_fg_drop_memopt TRUE hashindex foreground drop
_kdkv_fg_no_memopt FALSE hashindex foreground cleanup
_kdkv_fg_populate FALSE hashindex foreground populate
_kdkv_fg_repopulate FALSE hashindex foreground repopulate
_kdkv_force_fastpath FALSE kdkv fast path on-off
_kdkv_force_samehash FALSE kdkv hash to same bucket on-off
_kdkv_index_lossy TRUE hashindex lossiness on-off
_kdkv_index_relocate FALSE hashindex relocation on-off
_kdkv_indexinvalid FALSE objd and rdba based index invalidation
_kdkv_trace FALSE kdkv tracing on-off
_kdlf_check_rci 0 Control Lob RCI checks in block checking
_kdlf_direct_inode_path TRUE enable kdlf direct inode path for vanilla lobs
_kdlf_fast_move_compressed_lob TRUE kdlf fast move commpressed lobs
_kdlf_layers_cache TRUE enable kdlf securefiles layers cache
_kdlf_new_compression_adv TRUE enable new compression advisor for lobs
_kdlf_read_flag 0 kdlf read flag
_kdlf_track_itrcnt 200 Change the no of iterations to track
_kdli_STOP_bsz 0 undocumented parameter for internal use only
_kdli_STOP_dba 0 undocumented parameter for internal use only
_kdli_STOP_fsz 0 undocumented parameter for internal use only
_kdli_STOP_nio 0 undocumented parameter for internal use only
_kdli_STOP_tsn 0 undocumented parameter for internal use only
_kdli_adaptive_cache_inode TRUE enable adaptive inode cache
_kdli_adpt_sio_mem TRUE adaptive sio memory buffer
_kdli_allow_corrupt FALSE allow corrupt filesystem_logging data blocks during read/write
_kdli_buffer_inject TRUE use buffer injection for CACHE [NO]LOGGING lobs
_kdli_cache_hless_limit 4 #of extents to cache headless inode
_kdli_cache_inode TRUE cache inode state across calls
_kdli_cache_inode_off_limit 8192 cache_off limit for adaptive inode cache
_kdli_cache_read_threshold 0 minimum lob size for cache->nocache read (0 disables heuristic)
_kdli_cache_size 8 maximum #entries in inode cache
_kdli_cache_verify FALSE verify cached inode via deserialization
_kdli_cache_write_threshold 0 minimum lob size for cache->nocache write (0 disables heuristic)
_kdli_cacheable_length 0 minimum lob length for inode cacheability
_kdli_checkpoint_flush FALSE do not invalidate cache buffers after write
_kdli_dbc none override db_block_checking setting for securefiles
_kdli_delay_flushes TRUE delay flushing cache writes to direct-write lobs
_kdli_descn_adj FALSE coalesce extents with deallocation scn adjustment
_kdli_flush_cache_reads FALSE flush cache-reads data blocks after load
_kdli_flush_injections TRUE flush injected buffers of CACHE NOLOGGING lobs before commit
_kdli_force_cr TRUE force CR when reading data blocks of direct-write lobs
_kdli_force_cr_meta TRUE force CR when reading metadata blocks of direct-write lobs
_kdli_force_storage none force storage settings for all lobs
_kdli_full_readahead_threshold 0 maximum lob size for full readahead
_kdli_full_vll FALSE materialize full vll lobmap for reads
_kdli_icache_entries 3 size of itree cache
_kdli_inject_assert 0 inject asserts into the inode
_kdli_inject_batch 0 buffer injection batch size [1, KCBNEWMAX]
_kdli_inject_crash 0 inject crashes into the inode
_kdli_inline_xfm TRUE allow inline transformed lobs
_kdli_inode_preference data inline inode evolution preference (data, headless, lhb)
_kdli_inplace_overwrite 0 maximum inplace overwrite size (> chunksize)
_kdli_itree_entries 0 #entries in lhb/itree blocks (for testing only)
_kdli_memory_protect FALSE trace accesses to inode memory outside kdli API functions
_kdli_mts_so TRUE use state objects in shared server for asyncIO pipelines
_kdli_oneblk FALSE allocate chunks as single blocks
_kdli_preallocation_mode length preallocation mode for lob growth
_kdli_preallocation_pct 0 percentage preallocation [0 .. inf) for lob growth
_kdli_ralc_length 10485760 lob length threshold to trigger rounded allocations
_kdli_ralc_rounding 1048576 rounding granularity for rounded allocations
_kdli_rci_lobmap_entries 255 #entries in RCI lobmap before migration to lhb
_kdli_readahead_limit 0 shared/cached IO readahead limit
_kdli_readahead_strategy contig shared/cached IO readahead strategy
_kdli_recent_scn FALSE use recent (not dependent) scns for block format/allocation
_kdli_reshape FALSE reshape an inode to inline or headless on length truncation
_kdli_rinode_purge TRUE enable read inode purge
_kdli_safe_callbacks TRUE invoke inode read/write callbacks safely
_kdli_sio_async TRUE asynchronous shared IO
_kdli_sio_backoff FALSE use exponential backoff when attempting SIOP allocations
_kdli_sio_bps 0 maximum blocks per IO slot
_kdli_sio_chkpt TRUE Control SIO checkpointing during PQ Direct reads/parallel scans
_kdli_sio_dop 2 degree-of-parallelism in the SIO keep pool
_kdli_sio_fbwrite_pct 35 percentage of buffer used for direct writes in flashback-db
_kdli_sio_fileopen none shared IO fileopen mode: datasync vs nodatasync vs async
_kdli_sio_flush FALSE enable shared IO pool operations
_kdli_sio_free TRUE free IO buffers when not in active use
_kdli_sio_min_read 0 shared IO pool read threshold
_kdli_sio_min_write 0 shared IO pool write threshold
_kdli_sio_nbufs 8 maximum #IO buffers to allocate per session
_kdli_sio_niods 8 maximum #IO descriptors to allocate per session
_kdli_sio_on TRUE enable shared IO pool operations
_kdli_sio_pga FALSE use PGA allocations for direct IO
_kdli_sio_pga_top FALSE PGA allocations come from toplevel PGA heap
_kdli_sio_strategy extent shared IO strategy: block vs. extent
_kdli_sio_write_pct 100 percentage of buffer used for direct writes
_kdli_small_append_redo TRUE detect and use redo optimizations for small appends
_kdli_small_cache_limit 32 size limit of small inode cache
_kdli_sort_dbas FALSE sort dbas during chunkification
_kdli_space_cache_limit 2048 maximum #blocks in per-segment space cache
_kdli_space_cache_segments 16 #segments in space cache
_kdli_squeeze TRUE compact lobmap extents with contiguous dbas
_kdli_timer_dmp FALSE dump inode timers on session termination
_kdli_timer_trc FALSE trace inode timers to uts/tracefile
_kdli_trace 0 inode trace level
_kdli_vll_direct TRUE use skip-navigation and direct-positioning in vll-domain
_kdlu_integrated_bucket TRUE An integrated DBGT bucket for KDLI and other layers
_kdlu_max_bucket_size 6291456 UTS kdlu bucket size
_kdlu_max_bucket_size_mts 131072 UTS kdlu bucket size for mts
_kdlu_timer_dmp FALSE dump inode timers on session termination
_kdlu_trace_layer 0 UTS kdlu per-layer trace level
_kdlu_trace_system 0 UTS system dump
_kdlw_enable_ksi_locking FALSE enable ksi locking for lobs
_kdlw_enable_write_gathering TRUE enable lob write gathering for sql txns
_kdlwp_flush_threshold 4194304 WGC flush threshold in bytes
_kdlwp_memory_check TRUE bug 31354021: memory diagnostics
_kdlwp_multi_wgc TRUE enable multiple wgc
_kdlxp_cmp_subunit_size 262144 size of compression sub-unit in bytes
_kdlxp_cmpappopt TRUE New securefile compression algorithms
_kdlxp_dedup_flush_threshold 8388608 deduplication flush threshold in bytes
_kdlxp_dedup_hash_algo SHA1 secure hash algorithm for deduplication - only on SecureFiles
_kdlxp_dedup_inl_pctfree 5 deduplication pct size increase by which inlining avoided
_kdlxp_dedup_prefix_threshold 1048576 deduplication prefix hash threshold in bytes
_kdlxp_dedup_wapp_len 0 deduplication length to allow write-append
_kdlxp_lobcmpadp FALSE enable adaptive compression - only on SecureFiles
_kdlxp_lobcmplevel 2 Default securefile compression
_kdlxp_lobcmprciver 1 Default securefile compression map version
_kdlxp_lobcompress FALSE enable lob compression - only on SecureFiles
_kdlxp_lobdeduplicate FALSE enable lob deduplication - only on SecureFiles
_kdlxp_lobdedupvalidate TRUE enable deduplicate validate - only on SecureFiles
_kdlxp_lobencrypt FALSE enable lob encryption - only on SecureFiles
_kdlxp_lz4zstdcmpalgos TRUE New securefile compression algorithms
_kdlxp_mincmp 20 minimum comp ratio in pct - only on SecureFiles
_kdlxp_mincmplen 200 minimum loblen to compress - only on SecureFiles
_kdlxp_minxfm_size 32768 minimum transformation size in bytes
_kdlxp_no_dedup_on_insert FALSE disable deduplication for new inserts of deduplicated lobs
_kdlxp_spare1 0 deduplication spare 1
_kdlxp_uncmp FALSE lob data uncompressed - only on SecureFiles
_kdlxp_xfmcache TRUE enable xfm cache - only on SecureFiles
_kdmado_aim_imelig_eval_interval 60 IM eligibility evaluation interval for AIM (in minutes)
_kdmado_disable_async TRUE Disable async actions for AIM High
_kdmado_disable_imelig_aim TRUE Disable IM eligibility test for AIM High
_kdmado_im_txn_mntn_wt_per_row 1 AIM IM Txn maintenance wait time per row
_kdmado_partial_pop_backoff_mb 64 AIM Backoff for partial populate
_kdmado_st_txn_test 0 AIM HT ST_TXN parameter for testing
_kdmado_wt_txn_test 0 AIM HT WT_TXN parameter for testing
_kdmimadv_constant_speed FALSE Allow AIM algorithm
_kdt_buffering TRUE control kdt buffering for conventional inserts
_kdtgsp_retries 1024 max number of retries in kdtgsp if space returns same block
_kdu_array_depth 16 array update retry recursion depth limits
_kdz_clear_analysis_percent 60 percentage to clear dictionary analysis
_kdz_hcc_flags 0 Miscellaneous HCC flags
_kdz_hcc_track_upd_rids FALSE Enable rowid tracking during updates
_kdz_pcode_flags 0 pcode flags
_kdz_pred_nrows 32767 Number of rows to predicate at a time in kdzt
_kdz_proj_nrows 1024 Number of rows to project at a time in kdzt
_kdzado_postdm_mode 0 kdzado post dm action mode
_kdzf_columnar_cache default Enable Columnar Flash Cache String Mode
_kdzh_mhcc_min_aligned_chunk 0 Number of bytes for MHCC min aligned chunk to acquire
_kdzk_enable_init_trace FALSE Enable kdzk initialization tracing
_kdzk_load_specialized_library 3 Flags for loading HPK specialized library
_kdzk_specialized_library_name HPK specialized library name
_kdzk_trace_level 0 HPK trace level
_kebm_autotask_cont_resource_schedule FALSE Enable/disable container resource schedule
_kebm_autotask_nstrikes 3 kebm # strikes to auto suspend an autotask
_kebm_max_parallel_autotasks AUTO maximum parallel autotask executions per instance
_kebm_nstrikes 3 kebm # strikes to auto suspend an action
_kebm_preshut_act_enabled TRUE Enable/disable MMON Pre-shutdown Action
_kebm_sanity_check_enabled FALSE Enable/disable MMON Action Sanity Check
_kebm_suspension_time 104400 kebm auto suspension time in seconds
_kecap_cache_size 10240 Workload Replay INTERNAL parameter used to set memory usage in Applic
_keep_19907_during_recovery FALSE keep until scn within recovery target check in recovery
_keep_ac_mutables AUTO Application Continuity mutables keep control
_keep_mutables_automatic TRUE Keep mutables automatic
_keep_relocated_source_pdb FALSE Move source pdb to unplugged state after relocation
_keep_remote_column_size FALSE remote column size does not get modified
_kerberos_debug 0 Enable debug trace for Kerberos
_kerberos_per_pdb TRUE Enable per-PDB Kerberos
_kerberos_service_host service host for Kerberos
_kerberos_service_name service name for Kerberos
_kerberos_unique_cache_name FALSE Enable unique file name for Kerberos Credential Cache file
_kes_parse_model 2 SQL Tune/SPA KES Layer Parse Model control parameter
_keusp_max_num_alloc_buf DEFAULT Maximum number of KEUSP buffers in shared memory
_keusp_stream_batch_size DEFAULT Number of KEUSP buffers to flush in a stream batch
_kewm_simulate_oer4031 0 Simulate OER(4031) for one or more Metric Groups
_kewm_trace_sga FALSE Enable/Disable Metrics SGA Allocation Tracing
_key_vector_alternate_dictionary TRUE enables or disables key vector alternate dictionary generation
_key_vector_create_pushdown_threshold 20000 minimum grouping keys for key vector create pushdown
_key_vector_double_enabled TRUE enables or disables key vector support for binary_double
_key_vector_force_alternate_dictionary FALSE stops key vector alternate dictionary from being disabled
_key_vector_inlist_max_size 10240 maximum inlist key vector size (in KB)
_key_vector_inlist_min_values 0 minimum number of inlist values needed to genterate a key vector
_key_vector_join_pushdown_enabled TRUE enables or disables key vector join push down support
_key_vector_max_size 524288 maximum key vector size (in KB)
_key_vector_offload predicate controls key vector offload to cells
_key_vector_predicate_enabled TRUE enables or disables key vector filter predicate pushdown
_key_vector_predicate_threshold 0 selectivity pct for key vector filter predicate pushdown
_key_vector_shared_dgk_ht TRUE allows shared DGK hash table
_key_vector_timestamp_enabled TRUE enables or disables key vector support for timestamp
_kffmap_hash_size 1024 size of kffmap_hash table
_kffmlk_hash_size 512 size of kffmlk_hash table
_kffmof_fprate 1 acceptable false positive rate [1-10000] of the kffmof bloom filter
_kffmof_size 1048576 number of entries of the kffmof opened files bloom filter
_kffmop_chunks 128 number of chunks of kffmop's
_kffmop_hash_size 2048 size of kffmop_hash table
_kffmop_list_check FALSE enable PGA mop list sanity check
_kffmspw_hash_size 128 size of kffmspw_hash table
_kfi_software_patchmap value of patchmap for software
_kfi_version_patchmap pairs of version:patchmap for testing
_kfm_disable_set_fence FALSE disable set fence calls and revert to default (process fence)
_kgh_free_list_min_effort 12 typical number of free list chunks to visit
_kgh_restricted_subheaps 180 number of subheaps in heap restricted mode
_kgh_restricted_trace 0 trace level for heap dump-restricted mode
_kghdsidx_count 1 max kghdsidx count
_kghdsidx_lp_count 1 number of child latches for large pool and shared with Java pool
_kghdsidx_numa_count 1 number of child latches for NUMA pools
_kghdsidx_sp_count 1 number of child latches for shared pool and shared with Java pool
_kghdsidx_streams_count 1 number of child latches for Streams pool
_kgl_4021_assert_on_oso FALSE Raise soft assert on hitting ORA-4021 for Oracle supplied object
_kgl_assert_x_pin FALSE assert if KGL takes an X-pin on PL/SQL
_kgl_automatic_retry_on_deadlock TRUE disable automatic deadlock retry
_kgl_bucket_bitvector TRUE Enable creation of PDB bit vector in KGL Hash Buckets
_kgl_bucket_bitvector_clear TRUE Enable clearing library cache bucket bit vector
_kgl_bucket_count 9 Library cache hash table bucket count (2^_kgl_bucket_count * 256)
_kgl_bypass_options_load 0 disable loading of options for exceptional situations
_kgl_cluster_lock TRUE Library cache support for cluster lock
_kgl_cluster_lock_read_mostly FALSE Library cache support for cluster lock read mostly optimization
_kgl_cluster_pin TRUE Library cache support for cluster pins
_kgl_debug Library cache debugging
_kgl_final_blocker_kill_begin_time 2 time to wait in minutes before start killing blockers
_kgl_fixed_extents TRUE fixed extent size for library cache memory allocations
_kgl_hash_collision FALSE Library cache name hash collision possible
_kgl_heap_size 4096 extent size for library cache heap 0
_kgl_hot_object_copies 0 Number of copies for the hot object
_kgl_iterator_action SKIP Action to take if we dereference in-flux state in kgl iterator
_kgl_kill_final_blocker FALSE controls feature to kill KGL X lock/pin blockers
_kgl_kqr_cap_so_stacks 0 capture stacks for library and row cache state objects
_kgl_large_heap_assert_threshold 524288000 maximum heap size before KGL raises an internal error
_kgl_large_heap_warning_threshold 52428800 maximum heap size before KGL writes warnings to the alert log
_kgl_latch_count 0 number of library cache latches
_kgl_max_hot_cursors_factor 25 Factor to compute max num of cursors that can be marked hot
_kgl_max_wait_time_during_kill 15 max time to wait to get unblocked while killing blockers
_kgl_min_cached_so_count 1 Minimum cached SO count. If > 1 can help find SO corruptions
_kgl_skip_octcode_dlk_retry 65535 OCTCODEs to skip for deadlock retry
_kgl_time_to_wait_for_locks 15 time to wait for locks and pins before timing out
_kglpgmtx_cap_uol_stack FALSE Capture short stack upon mutex get
_kglsim_maxmem_percent 5 max percentage of shared pool size to be used for KGL advice
_kgrk_configs kgrk additional configurations
_kgsb_threshold_size 16777216 threshold size for base allocator
_kgx_latches 1024 # of mutex latches if CAS is not supported.
_kill_controlfile_enqueue_blocker TRUE enable killing controlfile enqueue blocker on timeout
_kill_diagnostics_timeout 60 timeout delay in seconds before killing enqueue blocker
_kill_enqueue_blocker 2 if greater than 0 enables killing enqueue blocker
_kill_java_threads_on_eoc FALSE Kill Java threads and do sessionspace migration at end of call
_kill_session_alert 5 Kill session to alert log
_kill_session_dump FALSE Process dump on kill session immediate
_kill_session_force FALSE override session kill default to force
_kjac_direct_path_enabled TRUE If direct path is enabled for TG
_kjac_force_outcome_current_session FALSE if TRUE, enable to run force outcome on the current session
_kjac_purge_limit 50000 Max number of LTXID_TRANS rows to delete in one purge cycle
_kjac_purge_timeout 3600 LTXID_TRANS purge scheduler timeout
_kjdd_call_stack_dump_enabled FALSE Enables printing of short call stack with the WFG
_kjdd_wfg_dump_cntrl 0 To control the way Wait-For_Graph is dumped
_kjltmaxgt 1000 record latch requests that takes longer than this many us
_kjltmaxht 1000 record latch reqeust that are held longer than this many us
_kjlton FALSE track DLM latch usage on/off
_kkfi_trace FALSE trace expression substitution
_kkpap_cache_plsql_result TRUE cache result of PL/SQL functions for partition pruning
_kkpap_zm_pruning_cache TRUE cache result of recursive zonemap partition pruning query
_kkpod_flush_validation LOW level of validation during partitioned object metadata flush
_kkpod_load_tolerance FULL level of tolerance during partitioned object metadata load
_kkpogpi_nocpy 1 attempt to avoid partition metadata copy in kkpogpi
_kkporesetdn_multiplier 2 multiplier used when partitions are renumbered
_kkporesetdn_threshold 2100000 threshold for partition renumbering as part of online PMOs
_kks_always_check_bind_equivalence FALSE Check bind equivalence every time
_kks_cached_parse_errors 0 KKS cached parse errors
_kks_debug 0 Shared cursor debugging and diagnostics
_kks_max_open_cursors_dup_limit 5 number of duplicate cursors in open cursors that are acceptable
_kks_obsolete_dump_threshold 1 Number of parent cursor obsoletions before dumping cursor
_kks_open_cursors_dump_summary_threshold 100 size to dump open cursors summary on max open cursors exceeded error
_kks_parse_error_warning 100 Parse error warning
_kks_parse_failure_time_period 3600 Parse failure time period (seconds)
_kks_reuse_ful_child_cursor 3 allow reuse of child cursor marked with FUL flag
_kksauc_cud_eval TRUE check remote mapped cursor referring connected user dblink
_kksfra_cap_stacks FALSE capture stacks for setting kksfra
_kksss_simple_ddl_buf_size 0 size of curent sql statement to be dumped in hang analyse report
_kktAllowInsteadOfDDLTriggeronDDL 0 Oracle internal parameter to allow instead of DDL triggers on specifie
_kktTriggerCaching FALSE enable trigger caching
_kokli_cache_size 128 Size limit of ADT Table Lookup Cache
_kokln_current_read FALSE Make all LOB reads for this session 'current' reads
_kolfuseslf FALSE allow kolf to use slffopen
_kpdb_auto_per_diag_snapshot_interval 50 Interval of snapshots before updating sub-op list
_kpdb_auto_per_diag_subop_max 0 Max number of KPDB sub-op to auto diagnose
_kpdb_log_errors 0 log user errors in v$client_errors
_kpdb_perf_diag_subop_list 0 List of KPDB sub-ops to diagnose
_kpdb_perf_diag_subop_max_exec_time 30 Max allowed time (in sec) for KPDB sub-op to complete
_kqdsn_cpu_digits 3 number of cpu digits in scalable sequence
_kqdsn_instance_digits 2 number of instance digits in scalable sequence
_kql_clientlocks_enabled 15 clients allocating DLM memory
_kql_disable_auto_commit FALSE Disable DDL auto commit in the session
_kql_dump_deptable_in_errorstack TRUE disable dependency info for libcache units
_kql_max_hang_time_for_lck1 180 max allowed time for LCK1 to be tied up in dictionary calls
_kql_subheap_trace 0 tracing level for library cache subheap level pins
_kql_verify_dependency_timestamps 0 verify dependency timestamps
_kqr_enable_conservative_logging TRUE log kgl/kqr objects conservativly in redo
_kqr_hot_copy_sample_size 1000000 number of mutex gets between periodic checks for hot objects
_kqr_hot_copy_sleep_limit 500 threshold of mutex sleeps to enable object hot copies
_kqr_max_hot_copies 16 upper limit of object hot copies allowed
_kqr_optimistic_reads TRUE optimistic reading of row cache objects
_kqr_trace_options 0 kqr Trace Options (Default is all enabled)
_kra_cfile_compaction TRUE controlfile record compation
_kra_obsolete_rule TRUE disable or enable obsolete rule
_kra_trace_buffer_size 131072 size of I/O trace buffer
_krb_check_osd_block_endianess TRUE Check OSD Block Endianess
_krb_trace_buffer_size 131072 size of per-process I/O trace buffer
_krbabr_trace_buffer_size 131072 size of I/O trace buffer
_krc_trace_buffer_size 131072 size of I/O trace buffer
_ksb_restart_clean_time 30000 process uptime for restarts
_ksb_restart_policy_times 0, 60, 120, 240 process restart policy times in seconds
_ksd_test_param 999 KSD test parmeter
_ksdx_charset_ratio 0 ratio between the system and oradebug character set
_ksdxdocmd_default_timeout_ms 30000 default timeout for internal oradebug commands
_ksdxdocmd_enabled TRUE if TRUE ksdxdocmd* invocations are enabled
_ksdxw_cini_flg 0 ksdxw context initialization flag
_ksdxw_nbufs 1000 ksdxw number of buffers in buffered mode
_ksdxw_num_pgw 10 number of watchpoints on a per-process basis
_ksdxw_num_sgw 10 number of watchpoints to be shared by all processes
_ksdxw_stack_depth 4 number of PCs to collect in the stack when watchpoint is hit
_ksdxw_stack_readable FALSE dump readable stack when watchpoint is hit
_kse_alt_stack_sig_syms 25 The number of top symbols used for the alternate stack signature
_kse_auto_core FALSE generate core for unexpected SIGSEGV/SIGBUS
_kse_die_timeout 60000 amount of time a dying process is spared by PMON (in centi-secs)
_kse_pc_table_size 256 kse pc table cache size
_kse_signature_entries 0 number of entries in the kse stack signature cache
_kse_signature_limit 7 number of stack frames to cache per kse signature
_kse_snap_ring_disable FALSE set to TRUE or FALSE to disable or enable error logging
_kse_snap_ring_record_min minimize recorded information in error stack history
_kse_snap_ring_record_stack FALSE should error snap ring entries show a short stack trace
_kse_snap_ring_size 100 ring buffer to debug internal error 17090
_kse_snap_ring_suppress 942 1403 List of error numbers to suppress in the snap error history
_kse_ssnt FALSE disables symbol translation in short stacks to make them faster
_kse_trace_int_msg_clear FALSE enables soft assert of KGECLEAERERROR is cleares an interrupt message
_ksfd_fob_pct 0 percentage of FOB state objects allocation
_ksfd_verify_write FALSE verify asynchronous writes issued through ksfd
_ksfdx_tests ksfdx testing - INTERNAL USE ONLY!
_ksfq_combine_cont_write_percentage 80 combine contiguous write capability percentage
_ksfqp_row_count 0 row count of x$ksfqp
_ksgl_ltchs_held_ctxt 8 Average number of latches held per KSGL context
_ksgl_max_dyn_latches 1024 Maximum number of KSGL dynamic latches
_ksi_clientlocks_enabled TRUE if TRUE, DLM-clients can provide the lock memory
_ksi_disable_sopt TRUE if TRUE (default), disable s-optimization for specific row caches
_ksi_pdb_checks TRUE if TRUE (default), do consistency checks on PDB IDs
_ksi_trace KSI trace string of lock type(s)
_ksi_trace_bucket SHARED memory tracing: use ksi-private or rdbms-shared bucket
_ksi_trace_bucket_size LCK1:1048576-REST:81 KSI trace bucket size in bytes (format: "LCK1:<n>-REST:<m>")
92
_ksim_group_ops_req_async_mode auto ksim group membership async op mode
_ksim_group_ops_req_async_procsz 10 ksim group async req batch processing size
_ksim_group_ops_req_async_procsz_dyn_adjustment TRUE ksim group async req processing sz dynamic adjustment
_ksim_group_ops_req_opmode async ksim group join/leave op mode
_ksim_time_monitor auto ksim layer time dynamic monitor and statistics
_ksipc_aspc_enabled FALSE is KSIPC Address Space Support Enabled
_ksipc_cksum_level Configure IPC Checksum level for clients on a per transport basis
_ksipc_common_sl Configure a single SL value for all client/transport combinations
_ksipc_ctrl_threshold_cnt Configure IPC Control Threshold Count Value for clients on a per trans
_ksipc_ctrl_threshold_ms Configure IPC Control Threshold Time (ms) Value for clients on a per t
_ksipc_efchecks 3 Check HCA/OS version for Exafusion
_ksipc_group_sz 1024 Configure KSIPC group size
_ksipc_heap_extent 1048576 KSIPC Heap Extent Size
_ksipc_ipclw_cksum_enable 0 Configure IPCLW cksum
_ksipc_ipclw_conn_dump 0 Configure IPCLW connection dump rate
_ksipc_ipclw_enable_param ipclw parameter enablement
_ksipc_ipclw_library_path over-ride default location of lib ipclw
_ksipc_ipclw_network_diag_ms 0 Configure IPCLW SEND TIMER (in MS)
_ksipc_ipclw_rcvbuf_mb 0 Configure IPCLW RCVBUF SIZE (in MB)
_ksipc_ipclw_spare_param3 ksipc ipclw spare parameter 3
_ksipc_ipclw_spare_param4 ksipc ipclw spare parameter 4
_ksipc_ipclw_spare_param5 ksipc ipclw spare parameter 5
_ksipc_ipclw_spare_param6 ksipc ipclw spare parameter 6
_ksipc_ipclw_spare_param7 ksipc ipclw spare parameter 7
_ksipc_ipclw_spare_param8 ksipc ipclw spare parameter 8
_ksipc_ipclw_wait_diag_ms 0 Configure IPCLW WAIT DIAG TIME (in MS)
_ksipc_ipclw_xrc_conn_diag 0 ksipc xrc transport connection diagnostics
_ksipc_ipclw_xrc_pflags 0 ksipc xrc transport pflags
_ksipc_libipc_path over-ride default location of libipc
_ksipc_loopback_ips KSIPC Loopback IP addresses
_ksipc_mga_segment_size 268435456 KSIPC MGA Segment Size
_ksipc_mode 0 ksipc mode
_ksipc_netintr_timeout ipq.KSMSQ_UDP_TRANS= Specify the timeout for queueing network interrupt to a processon a pe
30
_ksipc_rds_delay_ms 1000 Time(in ms) to wait for rds socket send buffers to be flushed
_ksipc_service_level Configure service level for clients on a per transport basis
_ksipc_service_mask 1 KSIPC Service Mask
_ksipc_skgxp_compat_library_path over-ride default location of lib skgxp compat
_ksipc_skgxp_library_path over-ride default location of lib skgxp
_ksipc_spare_param1 0 ksipc spare param 1
_ksipc_spare_param2 ksipc spare param 2
_ksipc_spare_param3 0 ksipc spare param 3
_ksipc_spare_param4 0 ksipc spare param 4
_ksipc_spare_param5 0 ksipc spare param 5
_ksipc_vnic_attach_limit 512 KSIPC VNIC attach limit
_ksipc_wait_flags 0 tune ksipcwait
_ksipc_window_size Configure IPC Windowing Value for clients on a per transport basis
_ksipclnt_ep_mode 0 KSIPC EP MODE
_ksipcsnsrv Configure Shared Nothing Server Name
_ksm_post_sga_init_notif_delay_secs 0 seconds to delay instance startup at sga initialization (post)
_ksm_pre_sga_init_notif_delay_secs 0 seconds to delay instance startup at sga initialization (pre)
_ksm_shared_pool_stats_minsz 524288 min value for printing stats
_ksm_shared_pool_stats_num_pdb 8 number of pdbs to dump shared pool info for
_ksm_sp_rcr_hits 10 hits to make object recurrent
_ksmb_debug 0 ksmb debug flags
_ksmd_protect_mode off KSMD protect mode for catching stale access
_ksmd_trace 0 ksmd tracing
_ksmg_granule_size 16777216 granule size in bytes
_ksmlsaf 0 KSM log alloc and free
_ksmsq_conn_per_epoch 0 KSMSQ Connections Per Epoch
_ksmsq_hintmaxinst 1024 KSMSQ Hint Max Instances
_ksmsq_hintmaxproc 320 KSMSQ Hint Max Processes
_ksnmon_int_param_1 4 KSNMON integer param 1
_ksnmon_int_param_2 0 KSNMON spare integer param 2
_ksnmon_int_param_3 0 KSNMON spare integer param 3
_ksnmon_int_param_4 0 KSNMON spare integer param 4
_ksnmon_int_param_5 0 KSNMON spare integer param 5
_ksnmon_int_param_6 0 KSNMON spare integer param 6
_ksnmon_max_flow 65535 KSNMON max number of flows monitored
_ksnmon_min_stats_interval_ms 5000 KSNMON min stats report interval in ms
_ksnmon_service_enable_bitmask 2147483647 KSNMON service enable (a bit per service)
_ksnmon_str_param_1 KSNMON spare string param 1
_ksnmon_str_param_2 KSNMON spare string param 2
_kspmx_enabled FALSE KSPMX Is Enabled
_kspmxs_flush_cache_size 1 KSPMXS flush cache size
_kspmxs_latch_freelists 2 Number of managed PMEM latch freelists
_kspmxs_latch_usid_map_size 256 KSPMXS latch usid map size
_kspmxs_max_regions 64 KSPMXS max regions
_kspmxs_max_waits 4 KSPMXS max waits
_kspmxs_txn_freelists 32 Number of PMEM transactions freelists
_kspmxs_upgrade_mutexes 64 KSPMXS upgrade mutex
_kspmxs_usid_map_size 1024 KSPMXS usid map size
_kspmxs_wait_buckets 1024 KSPMXS wait buckets
_kspol_tac_timeout 5 timeouts for TAC registerd by kspol
_ksr_control_dyn_flags 0 KSR dyanamic control flags
_ksr_control_flags 0 KSR control flags
_ksr_unit_test_processes 0 number of ksr unit test processes
_ksrk_dedicated_io_threads_pct 50 percentage of total io threads dedicated for PDBs
_ksrk_max_io_threads_pct 40 percentage of total "processes" the PubSub sub system can use as its i
_ksrk_pdbmax_io_thread_pct 100 Maximum number of IO threads a PDB can use
_ksrk_pga_limit_pct 40 percentage of total PGA that can be used by the bridge
_ksrk_pga_reclaim_pct 50 PGA usage threshold at which bridge starts reclaiming free extents fro
_ksrk_sga_limit_pct 10 percentage of total SGA that can be used by KSRK
_ksrma_enabled AUTO turn ksrma off, make it automatic, or turn on CMI or KSMSQ provider. D
_ksrma_gsm_base_addr Base Address to use for GSM
_kss_callstack_type state object callstack trace type
_kss_quiet TRUE if TRUE access violations during kss dumps are not recorded
_kstrc_archiver disk://localhost KSTRC Backend archiver
_kstrc_bucket_max_size 2097152 Configure the max size of the trace bucket for each KSTRC Operation
_kstrc_max_operations 4096 Configure total max number of KSTRC operations available/in use
_kstrc_service_mask 0 KSTRC Service Mask
_ksu_diag_kill_time 5 number of seconds ksuitm waits before killing diag
_ksu_proc_percent_target 50 dynamic process usage target
_ksu_proc_percent_threshold 70 dynamic process usage threshold
_ksuitm_addon_trccmd command to execute when dead processes don't go away
_ksuitm_dont_kill_dumper FALSE delay inst. termination to allow processes to dump
_ksv_dynamic_flags1 0 ksv dynamic flags 1 - override default behavior
_ksv_max_spawn_fail_limit 5 bg slave spawn failure limit
_ksv_pool_hang_kill_to 0 bg slave pool terminate timeout
_ksv_pool_wait_timeout 600 bg slave pool wait limit
_ksv_slave_exit_timeout 120 slave exit timeout
_ksv_spawn_control_all FALSE control all spawning of background slaves
_ksv_static_flags1 0 ksv static flags 1 - override default behavior
_ksvppktmode 0 ksv internal pkt test
_ksws_alb_block_service FALSE enable ALB Blocking of overloaded service
_ksws_alb_session_age 120 KSWS ALB Minimum age(seconds) of session to consider marking
_ksws_alb_suspend_duration 300 KSWS ALB Suspend Duration Time
_ksws_alb_test_delta_override 0 KSWS ALB total sessions after which service is blocked
_ksws_alb_test_drain_timeout 300 KSWS ALB time in seconds before draining kicks in
_ksws_alb_test_load_balance_frequency 300 KSWS ALB Load Balance Frequency in deci seconds
_ksws_alb_test_load_percent 106 KSWS ALB Load Percentage to trigger marking for draining
_ksws_alb_test_selection_bias 100 KSWS ALB percentage of sessions to target
_ksws_child_service_override FALSE KSWS child service override
_ksws_clb_storm_count 15 KSWS CLB Goodness Changes Counter to trigger posting
_ksws_clb_storm_interval 500 KSWS CLB posting Interval to Listener
_ksws_coloc_control 1 KSWS Colocation control parameter
_ksws_enable_alb TRUE enable ALB metrics processing
_ksws_enable_goodness_for_singleton_primary_with_t TRUE enable goodness for singleton primary with true cache service
c_service
_ksws_fallback_to_root FALSE KSWS Fallback to Root CDB service
_ksws_goodness_control 1 KSWS Goodness Control to Manually override
_ksws_java_patching 0 java patching mode
_ksws_live_migration 1 KSWS Live Migration Feature Control
_ksws_lm_drain TRUE KSWS Live Migration Drain Allowed
_ksws_lm_interval 100 KSWS Live Migration Process Cycle Interval
_ksws_lm_max_time 6000 KSWS Live Migration Max Time To Trigger end
_ksws_modsvc_call_out_enabled TRUE modify service call out enabled
_ksws_perf_control 29 KSWS Performance control parameter
_ksws_perf_tracing 0 KSWS Performance Diagnostics and Monitoring
_ksws_rlb_cpu_busy_scope TRUE KSWS RLB CPU BUSY SCOPE
_ksws_smart 29 KSWS Smart Feature Control
_ksws_smart_clswtime_dbtime_perc_thresh 70 SMART cluster wait time : db time percentage threshold
_ksws_smart_frequency 900 KSWS Smart Publishing Frequency in deci seconds
_ksws_smart_gcwtime_clswtime_perc_thresh 90 SMART gc contention wait time : cluster wait time percentage threshold
_ksws_use_placement_template_attribute FALSE use placement_template attribute
_kswsas_close_pdb_on_lstsvc TRUE Close a PDB when the last user service is stopped
_kswsas_db_svc_mapping Map db service name to different service
_kswsas_drain_kill_batch_size 5 Batch size for killing non-drained sessions
_kswsas_ht_log_size 7 kswsas_ht_log_size
_kswsas_num_jp_slaves 0 Number of slaves for java patching
_kswsas_pdb_auto_close_timeout 600 Close a PDB after the timeout
_ksxp_allow_ksxr_rolling_migration TRUE Allow KSXR operations during rolling migration
_ksxp_compat_flags 0 ksxp compat flags
_ksxp_control_flags 0 modify ksxp behavior
_ksxp_diagmode OFF set to OFF to disable automatic slowsend diagnostics
_ksxp_disable_clss 0 disable CLSS interconnects
_ksxp_disable_dynamic_loading FALSE disable dynamic loadin of lib skgxp
_ksxp_disable_ipc_stats FALSE disable ipc statistics
_ksxp_dump_timeout 20 set timeout for kjzddmp request
_ksxp_dynamic_skgxp_param dynamic skgxp parameters
_ksxp_exa_ip_config 0 ksxp exa ip config
_ksxp_if_config 0 ksxp if config flags
_ksxp_init_stats_bkts 0 initial number arrays for ipc statistics
_ksxp_ipclw_enabled 1 enable ipclw for KSXP
_ksxp_ipclw_ptswinsz 8 KSXP port conn send window
_ksxp_ksmsq_ip_config 0 ksxp ksmsq ip config
_ksxp_lw_post_flags 0 tune ksxp post (lw)
_ksxp_max_stats_bkts 0 max. arrays for ipc statistics
_ksxp_ping_enable TRUE disable dynamic loadin of lib skgxp
_ksxp_ping_polling_time 0 max. arrays for ipc statistics
_ksxp_poll_netintr_timeout 3600 ksxp poll network interrupt timeout in seconds
_ksxp_reaping 50 tune ksxp layer reaping limit
_ksxp_reporting_process LMD0 reporting process for KSXP
_ksxp_save_sockets 0 Limit foreground process's sockets
_ksxp_save_sockets_pattern * Process pattern on which sockets saving is active
_ksxp_send_timeout 300 set timeout for sends queued with the inter-instance IPC
_ksxp_skgxp_ant_options SKGXP ANT options
_ksxp_skgxp_ctx_flags1 0 IPC debug options flags (RAC)
_ksxp_skgxp_ctx_flags1mask 0 IPC debug options flags mask (RAC)
_ksxp_skgxp_dynamic_protocol 4096 IPC protocol override (RAC) (0/-1=*,2=UDP,3=RDS,!0x1000=ipc_X)
_ksxp_skgxp_inets limit SKGXP networks
_ksxp_skgxp_rgn_ports 0 region socket limits (0xFFFFNNXX): F=flags, N=min, X=max
_ksxp_skgxp_spare_param1 ipc ksxp spare parameter 1
_ksxp_skgxp_spare_param2 ipc ksxp spare parameter 2
_ksxp_skgxp_spare_param3 ipc ksxp spare parameter 3
_ksxp_skgxp_spare_param4 ipc ksxp spare parameter 4
_ksxp_skgxpg_last_parameter 27 last defined skgxpg parameter - ksxp
_ksxp_spare_param1 KSXP Spare Parameter 1
_ksxp_stats_mem_lmt 0 limit ipc statistics memory. this parameter is a percentage value
_ksxp_testing 0 KSXP test parameter
_ksxp_unit_test_byte_transformation FALSE enable byte transformation unit test
_ksxp_validate_cnh_life_cycle 0 enable validation of ksxp connection life cycle
_ksxp_wait_flags 0 tune ksxpwait
_ksz_dummy_parameter Internal spare parameter for ksz.c
_ksz_dummy_parameter2 Internal spare parameter2 for ksz.c
_ksz_fake_mga_check_range 10 ksz fake mga status check random range
_ksz_fake_mga_mode FALSE enable ksz fake MGA mode
_ktb_debug_flags 8 ktb-layer debug flags
_ktc_debug 0 for ktc debug
_ktc_latches 0 number of ktc latches
_ktf_copy_mapping_freq HIGH Frequency of copy mappings to each pdb
_ktilm_min_num_dml_trckrs_to_flush_each_flush 100 Min Num of Trackers to Flush in every Flush
_ktilm_min_time_sec_bfr_dml_stat_flush 300 Minimum Time in sec to Wait Before DML STAT FLUSH
_ktilm_pct_of_dml_trckrs_to_flush_each_flush 25 PCT Of Trackers to Flush in every Flush Attempt
_ktilm_uga_off FALSE Disable KTILM UGA cache activity tracking
_ktilmsc_exp 600 expiration time of ktilm segment cache (in second)
_kts_dbg 0 KTS Generic Debug
_ktsl_dbg 0 Debug Securefile space layer features
_ktslj_segext_max_mb 0 segment pre-extension max size in MB (0: unlimited)
_ktslj_segext_retry 5 segment pre-extension retry
_ktslj_segext_warning 10 segment pre-extension warning threshold in percentage
_ktslj_segext_warning_mb 0 segment pre-extension warning threshold in MB
_ktsls_autoshrink_seg_idle_seconds 86400 automatic securefile shrink segment idle seconds
_ktsls_autoshrink_seg_pen_seconds 86400 automatic securefile shrink segment penalty seconds
_ktsls_autoshrink_trickle_mb 1024 automatic securefile shrink trickle mb
_ktspsrch_maxsc 1024 maximum segments supported by space search cache
_ktspsrch_maxskip 5 space search cache rejection skip upper limit
_ktspsrch_scchk 60 cleanout check time of space search cache
_ktspsrch_scexp 60 expiration time of space search cache
_ktst_dbg 0 Kernel Transaction Temporary Sort management Debug
_ktst_rss_max 1000 maximum temp extents to be released across instance
_ktst_rss_min 100 minimum temp extents to be released across instance
_ktst_rss_retry 5 maximum retries of sort segment release
_ktt_tsid_reuse_threshold 60000 tablespace id reuse threshold
_ktte_ts_shrink_group 6 tablespace shrink group
_ktte_ts_shrink_interval 3600 tablespace shrink interval
_kttets_ignore_free_space FALSE Should x$kttets ignore storage free space for max
_kttext_warning 1285 tablespace pre-extension and shrink warning threshold in percentage
_ktu_latches 0 number of KTU latches
_ku_trace none datapump trace parameter
_kxdbio_ctx_init_count 32 initial count of KXDBIO state object
_kxdbio_disable_offload_opcode 0 KXDBIO Disable offload for the set opcodes. Value is a Bitmap of 0
_kxdbio_enable_ds_opcode 0 KXDBIO Enable Dumb storage simulation for the set opcodes.
_kxdbio_hca_loadavg_thresh 74 HCA loadavg threshold at which writes need to get offloaded
_kxdbio_offena_timeout 7200000 kxdbio re-enable offloaded write timeout
_kxdbio_ut_ctl 0 kxdbio unit test controls
_kxfp_flood_control_period 3600 time period within which we control the flood of the root error of ORA
_kxfp_flood_control_times 5 number of times allowed to post the root error of ORA-12801 into the l
_kxs_library_cache_stats TRUE Library cache statistics for shared cursors
_kxscio_cap_stacks FALSE capture location when kxscio is set to null
_large_pool_min_alloc 65536 minimum allocation size in bytes for the large allocation pool
_largepage_retry_max_count 3 Maximum number of retries for largepage allocation
_last_allocation_period 5 period over which an instance can retain an active level1 bitmap
_latch_class_0 latch class 0
_latch_class_1 latch class 1
_latch_class_2 latch class 2
_latch_class_3 latch class 3
_latch_class_4 latch class 4
_latch_class_5 latch class 5
_latch_class_6 latch class 6
_latch_class_7 latch class 7
_latch_classes latch classes override
_latch_miss_stat_sid 0 Sid of process for which to collect latch stats
_latch_pause_count 0 Latch pause count
_latch_pause_mode static Latch pause mode
_latch_wait_list_pri_sleep_secs 1 Time to sleep on latch wait list until getting priority
_lazy_mount_nfs FALSE Mount NFS lazily
_ldap_adaptive_to_no_nested_group_search TRUE LDAP adaptive to no nested group search
_ldap_config_force_sync_up FALSE LDAP configure force sync up
_ldap_config_ssl_for_sasl_md5 TRUE LDAP configure SSL for SASL-DIGEST-MD5
_ldap_no_nested_group_search FALSE LDAP no nested group search
_ldap_password_oneway_auth FALSE Use oneway auth for password based LDAP directory bind
_ldap_reset_user_account_flc TRUE LDAP reset user account lockout counter
_ldap_use_all_direct_groups_only TRUE LDAP use all direct groups only
_ldap_warning_on_multi_shared_mappings FALSE LDAP warning on multiple shared mappings
_ldr_io_size 1048576 size of write IOs used during a load operation
_ldr_pga_lim 0 pga limit, beyond which new partition loads are delayed
_ldr_pga_proc_lim 0 pga proc limit, beyond which new partition loads are delayed
_ldr_tempseg_threshold 8388608 amount to buffer prior to allocating temp segment (extent sizing)
_leader_pdb FALSE enable leader PDB functionality
_leader_pdb_guid GUID of Leader PDB
_leader_pdb_guid_int_app FALSE Use leader PDB GUID in internal application name
_left_nested_loops_random TRUE enable random distribution method for left of nestedloops
_lgwr_delay_slave_write FALSE Enable LGnn write delay for testing
_lgwr_delay_write FALSE Enable LGWR write delay for testing
_lgwr_delay_write_csec 300 If LGWR write delays are enabled, delay each write by this amount
_lgwr_delay_write_interval 10 If LGWR write delays are enabled, delay every Nth write
_lgwr_io_outlier 0 LGWR I/O outlier frequency
_lgwr_io_slaves 0 LGWR I/O slaves
_lgwr_max_ns_wt 1 Maximum wait time for lgwr to allow NetServer to progress
_lgwr_ns_nl_max 1000 Variable to simulate network latency or buffer threshold
_lgwr_ns_nl_min 500 Variable to simulate network latency or buffer threshold
_lgwr_ns_sim_err 0 Variable to simulate errors lgwrns
_lgwr_posts_for_pending_bcasts FALSE LGWR posts commit waiters for pending broadcasts
_lgwr_ta_sim_err 0 Variable to simulate errors lgwr true async
_lgwr_thick_mode_config 1:2:1536:8192:1500 adaptive overlapped writes thick mode configuration
_lgwr_thin_mode_config 1:256:256:100:750 adaptive overlapped writes thin mode configuration
_library_cache_advice TRUE whether KGL advice should be turned on
_library_cache_dump_cooling_period 10 Period to wait (in minutes) before resetting dump count
_library_cache_dump_interval 0 Interval (in seconds) between each dump
_light_work_rule_debug FALSE if TRUE, light work rule debugging is enabled
_lightweight_hdrs TRUE Lightweight headers for redo
_like_with_bind_as_equality FALSE treat LIKE predicate with bind as an equality predicate
_link_to_leader_pdb database link to Leader PDB
_link_ts_force_online TRUE force linked tablespace to be online
_link_ts_name Name of linked tablespace
_listener_registration_retry_secs 60 listener registration retry time (in seconds)
_lm_activate_lms_threshold 100 threshold value to activate an additional lms
_lm_adrm_interval 300 active drm interval in centiseconds
_lm_adrm_options 3 active drm options
_lm_adrm_scan_timeout 50 active drm f2a/flush scan timeout in centisecs
_lm_adrm_time_out 120 active drm timeout in minutes
_lm_asm_enq_hashing TRUE if TRUE makes ASM use enqueue master hashing for fusion locks
_lm_async_da FALSE enable async da requests
_lm_async_pdb_open 0 if TRUE enables asynchronous pdb open in DLM
_lm_batch_compression_threshold 0 GES threshold to start compression on batch messages
_lm_better_ddvictim TRUE GES better deadlock victim
_lm_big_cluster_optimizations TRUE enable certain big cluster optimizations in drm
_lm_broadcast_res enable_broadcast Enable broadcast of highest held mode of resource.
_lm_cache_allocated_res_ratio 50 ratio of cached over allocated resources
_lm_cache_enqueue string of enqueues to cache at the client: separate by |, use DECIMAL
_lm_cache_lvl0_cleanup 0 how often to cleanup level 0 cache res (in sec)
_lm_cache_res_cleanup 25 percentage of cached resources should be cleanup
_lm_cache_res_cleanup_tries 10 max number of batches of cached resources to free per cleanup
_lm_cache_res_options 0 ges resource cache options
_lm_cache_res_skip_cleanup 20 multiple of iniital res cache below which cleanup is skipped
_lm_cache_res_type TMHWDI cache resource: string of lock types(s)
_lm_check_ges_resource 0 GES: additional checks during resource allocation (0|1|2|3)
_lm_checksum_batch_msg 0 GES checksum batch messages
_lm_chk_inv_domenq_ops TRUE enable checks for invalid enqueue operations on domains
_lm_comm_batch_size_option 2 KJC maximum batch size option
_lm_comm_channel msgq GES communication channel type
_lm_comm_direct_return_free_multiple 2 GES Direct Return Free queue multiple
_lm_comm_direct_return_hwm_add 60 GES SO High Water Mark additional buffers
_lm_comm_direct_return_mp_enable TRUE GES Direct Return to DLM mp enable
_lm_comm_direct_return_retnq_trigger 1000 GES Direct Return Queue Size Trigger
_lm_comm_ipclw_connect_trigger 75 GES communication ipclw connect trigger in ms
_lm_comm_ipclw_wait_enable 150 GES communication ipclw wait enable in ms
_lm_comm_ipclw_wait_trigger 100 GES communication ipclw wait trigger in ms
_lm_comm_monitor_pending_sends 0 Pending sends monitoring
_lm_comm_msgq_bufr_multiple 8 MSGQ_DRMQ multiple for maximum buffers
_lm_comm_msgq_busywait 0 busy wait time in microsecond for msgq
_lm_comm_msgq_copy_buffers FALSE MSGQ_DRMQ copy msgs to new buffer
_lm_comm_msgq_fixed_buffers FALSE MSGQ with fixed number of receive buffers
_lm_comm_rcv_msg_history_slots 50 GES communication receive message history slots
_lm_comm_reap_count 1 message reap count for receive
_lm_comm_receive_buffer_multiple 2 Additional receive buffer multiple
_lm_comm_send_proxy_bufr_return_mode 1 Send proxy buffer return mode
_lm_comm_send_proxy_nr_delay 10 Send proxy delay before sending NULLREQ
_lm_comm_send_proxy_send_comp_wait 100 Send proxy wait on send completion
_lm_comm_send_proxy_send_wait 50 Send proxy wait per sends
_lm_comm_send_proxy_tkt_return TRUE Allow send proxy to return tickets
_lm_comm_send_trace_trigger 500 GES communication send trace trigger in ms
_lm_comm_slow_op_loop_threshold 15 GES communication slow operation loop threshold in ms
_lm_comm_slow_op_spx_loop_threshold 30000 GES comm slow spx operation loop threshold in microsec
_lm_comm_slow_op_stat_dump_threshold 5 GES communication slow operation stat dump threshold in sec
_lm_comm_sync_seq_on_send_failure TRUE GES communication sync seq for failed sends after reconfig
_lm_comm_tkts_adaptive TRUE Adpative ticketing enabled
_lm_comm_tkts_adpt_rsv 1 Adpative ticketing reserve multiple
_lm_comm_tkts_calc_period_length 100000 Weighted average calculation interval length (us)
_lm_comm_tkts_max_add 5 Ticket allocation maximum allotments
_lm_comm_tkts_max_periods 10 Max number of periods used in weighted avearage calculation
_lm_comm_tkts_min_decrease_wait 120 Seconds to wait before allowing an allocation decrease
_lm_comm_tkts_min_increase_wait 10 Seconds to wait before allowing an allocation increase
_lm_comm_tkts_mult_factor 1 Ticket allocation multiplication factor
_lm_comm_tkts_nullreq_threshold 1 Null request threshold
_lm_comm_tkts_sub_factor 10 Ticket allocation subtraction factor
_lm_comm_wait_diag_trigger 30 GES communication wait diag trigger in ms
_lm_compression_scheme zlib GES compression scheme
_lm_contiguous_res_count 128 number of contiguous blocks that will hash to the same HV bucket
_lm_da_win_enable TRUE enable da windowing
_lm_da_window 1 number of windows in domain action
_lm_da_window_interval 0 Interval in centiseconds between each domain action window
_lm_db_rank 6 rank of this DB for process priority purposes
_lm_db_ranks ranks of DBs on this node
_lm_dd_ignore_nodd FALSE if TRUE nodeadlockwait/nodeadlockblock options are ignored
_lm_dd_interval 10 dd time interval in seconds
_lm_dd_max_search_time 180 max dd search time per token
_lm_dd_maxdump 50 max number of locks to be dumped during dd validation
_lm_dd_scan_interval 5 dd scan interval in seconds
_lm_dd_search_cnt 3 number of dd search per token get
_lm_default_failure_action 0 default failure action
_lm_deferred_msg_timeout 163 deferred message timeout
_lm_domain_hash_buckets 64 number of buckets for the domains hash table
_lm_drm_banned_objs list of objects not allowed to do drm
_lm_drm_batch_time 10 time in seconds to wait to batch drm requests
_lm_drm_disable 0 disable drm in different level
_lm_drm_disable_kjfc FALSE disable drm at kjfc level
_lm_drm_duration_limit 60 set drm object duration limit (secs time/object size)
_lm_drm_duration_limit_type 1 drm object time limit type (time/size)
_lm_drm_filter_history_window 60 drm filter history window
_lm_drm_filter_history_window_type 1 drm object time limit type (time/size)
_lm_drm_filters 7 enable drm filters
_lm_drm_hiload_percentage 200 drm high load threshold percentage
_lm_drm_lowload_percentage 200 drm low load threshold percentage
_lm_drm_max_banned_objs 10 maximum number of objects not allowed to do drm
_lm_drm_max_requests 100 dynamic remastering maximum affinity requests processed together
_lm_drm_min_interval 600 minimum interval in secs between two consecutive drms
_lm_drm_object_scan TRUE enable/disable object scan to force full table scan always
_lm_drm_pdb_on TRUE only pdb members participate in DRM
_lm_drm_test_duration_limit 5 set drm test duration limit (secs time/object size)
_lm_drm_we_interval 60 drm wait events collection interval in seconds
_lm_drm_we_size 2000 size of drm wait events statistics
_lm_drm_window 0 dynamic remastering bucket window size
_lm_drm_xlatch 0 dynamic remastering forced exclusive latches
_lm_drmopt12 184 enable drm scan optimizations in 12
_lm_dump_null_lock FALSE dump null lock in state dump
_lm_dynamic_lms FALSE dynamic lms invocation
_lm_dynamic_load TRUE dynamic load adjustment
_lm_dynamic_sga_target dynamically adjust for changes in SGA size
_lm_enable_aff_benefit_stats FALSE enables affinity benefit computations if TRUE
_lm_enable_pdb_abort 1 enable pdb abort as default failure action
_lm_enable_translation FALSE tells if KJURN_PDBID should translate using kpdb calls
_lm_enq_iso_enabled TRUE if TRUE enables enqueue isolation
_lm_enq_lock_freelist Number of ges enqueue element freelist
_lm_enq_rcfg TRUE if TRUE enables enqueue reconfiguration
_lm_enqueue_blocker_dump_timeout 120 enqueue blocker dump timeout
_lm_enqueue_blocker_dump_timeout_cnt 30 enqueue blocker dump timeout count
_lm_enqueue_blocker_kill_timeout 0 enqueue blocker kill timeout
_lm_enqueue_freelist 3 Number of enqueue freelist
_lm_enqueue_timeout 360 enqueue suggested min timeout in seconds
_lm_exadata_fence_type TRUE if FALSE disable Exadata fence type
_lm_fdrm_stats FALSE gather full drm statistics
_lm_file_affinity mapping between file id and master instance number
_lm_file_read_mostly mapping between read-mostly file id and master instance number
_lm_free_queue_threshold 0 GES free queue threshold
_lm_freeze_kill_time 30 timeout for killing unfrozen processes in rcfg/drm freeze step
_lm_gcs_rht_alloc_size 4096 gcs rht allocation chunk size
_lm_ges_rht_alloc_size 4096 ges rht allocation chunk size
_lm_ges_rht_mem_pct 15 options to size RHT structures per pdb
_lm_gl_hash_scheme 1 group lock table hashing scheme (0|1|2)
_lm_global_posts TRUE if TRUE deliver global posts to remote nodes
_lm_hash_control 5 bit field controlling the hashing behavior of the lock manager
_lm_hashtable_bkt_high 5 High element threshold in hash table bucket
_lm_hashtable_bkt_low 3 Low element threshold in hash table bucket
_lm_hashtable_bkt_thr 70 Threshold for hash table resizing
_lm_hb_acceptable_hang_condition default list of acceptable hang conditions in heartbeat check
_lm_hb_callstack_collect_time 5 hb diagnostic call stack collection time in seconds
_lm_hb_callstack_collect_time_long 60 extended hb diagnostic call stack collection time in seconds
_lm_hb_cfio_timeout 70 control file io timeout in seconds
_lm_hb_disable_check_list ARC* list of process names to be disabled in heartbeat check
_lm_hb_enable_acl_check TRUE to enable the wait analysis with acceptable condition lists
_lm_hb_exponential_hang_time_factor 2 heartbeat exponential hang time multiplier
_lm_hb_lgio_timeout 70 LGWR io timeout in seconds
_lm_hb_maximum_hang_report_count 20 maximum heartbeat hang report count
_lm_hb_per_proc_behavior default heartbeat behavior
_lm_hb_per_proc_timeout default heartbeat timeout
_lm_hb_timeout_extension heartbeat timeout extension in seconds
_lm_high_load_sysload_percentage 90 high watermark system load percentage
_lm_high_load_threshold 5 high load threshold parameter
_lm_hist_bucket_trigger 500 LM trigger to produce trace bucket dump in ms
_lm_hist_dump_trigger 100 LM trigger to produce diagnostic in ms
_lm_hist_opcode_trigger 0 LM opcode to produce trace bucket dump
_lm_hvenqid4_opt 1 pass setmaster in id4 of HV enqueue name
_lm_hwc_disabled FALSE to disable handle with care behavior
_lm_idle_connection_action kill GES idle connection action
_lm_idle_connection_check TRUE GES idle connection check
_lm_idle_connection_check_interval 140 GES idle connection check interval time
_lm_idle_connection_instance_check_callout TRUE GES idle connection instance check callout
_lm_idle_connection_kill TRUE GES idle connection kill
_lm_idle_connection_kill_max_skips 1 GES idle connection max skip kill request
_lm_idle_connection_load_check TRUE GES idle connection load check
_lm_idle_connection_max_ignore_kill_count 2 GES maximum idle connection kill request ignore count
_lm_idle_connection_quorum_threshold 50 GES idle connection health quorum threshold
_lm_inherited_max_requests 100 maximum inherited affinity dissolve requests processed together
_lm_kill_fg_on_timeout TRUE GES kill fg on IPC timeout
_lm_killproc_timeout 120 lazy domain killproc timeout in seconds
_lm_kjbdomlzdomscn_interval 1 kjbdomlzdomscn() interval time in seconds
_lm_lazy_domain_timeout 600 lazy domain timeout in seconds
_lm_lazy_recovery_member_timeout 300 lazy recovery member detach timeout in seconds
_lm_lhupd_interval 5 load and health update interval
_lm_lmd_waittime 8 default wait time for lmd in centiseconds
_lm_lmon_nowait_latch TRUE if TRUE makes lmon get nowait latches with timeout loop
_lm_lms 0 number of background gcs server processes to start
_lm_lms_hipri_yield_spincount 10 LMS or slaves yield spin count threshold when in hi-pri
_lm_lms_no_yield FALSE if TRUE, LMS will not yield in spin mode
_lm_lms_opt_priority TRUE enable freeslot lms priority optimization
_lm_lms_priority_check_frequency 60000 frequency of LMS priority decisions in milliseconds
_lm_lms_priority_dynamic TRUE enable lms priority modification
_lm_lms_rt_threshold maximum number of real time lms processes on machine
_lm_lms_spin FALSE make lms not sleep
_lm_lms_waittime 3 default wait time for lms in centiseconds
_lm_local_hp_enq TRUE use static file affinity for HP enqueue mastership
_lm_locks 12000 number of enqueues configured for cluster database
_lm_low_load_percentage 75 low watermark percentage for load threshold
_lm_master_weight 1 master resource weight for this instance
_lm_max_lms 0 max. number of background global cache server processes
_lm_max_lms_block_time 5 max blocking time allowed on LMS (sec)
_lm_mp_additional_big_buffers 20 GES MP extra big buffers per pool
_lm_mp_additional_reg_buffers 20 GES MP extra regular buffers per pool
_lm_mp_avail_queue_threshold 0 GES MP avail queue threshold
_lm_mp_bulk_mbuf_free FALSE GES MP bulk free message buffer queues
_lm_mp_bulk_trigger_divisor 2 GES MP bulk free trigger divisor
_lm_mp_expand_big_pool_percent 1 GES MP expand big pool
_lm_mp_expand_reg_pool_percent 5 GES MP expand regular pool
_lm_mp_latch_trigger 4000 GES MP Latch trigger threshold for trace lines
_lm_mp_latch_trigger_soft 40000 GES MP Latch trigger threshold for soft assert
_lm_mp_share_lms_pools TRUE GES MP share LMS pools with critical BGs
_lm_mp_small_lms_pools TRUE GES MP small regular pool for LMS when not sharing
_lm_msg_batch_size 0 GES batch message size
_lm_msg_cleanup_interval 3000 GES message buffer cleanup interval time
_lm_msg_pool_dump_threshold 20000 GES message pool dump threshold in terms of buffer count
_lm_msg_pool_user_callstack_dump FALSE GES message pool call stack dump upon exceeding of threshold
_lm_mwin_req_queue_max_size 4000 maximum size of multiwindow request queue
_lm_new_esm 1 use new enter server mode code
_lm_no_lh_check FALSE skip load and health check at decision points
_lm_no_sync TRUE skip reconfiguration/drm syncr/synca messaging
_lm_node_join_opt FALSE cluster database node join optimization in reconfig
_lm_nodrm_service_pct 95 minimum nonsingleton service access percentage to disable drm
_lm_non_fault_tolerant FALSE disable cluster database fault-tolerance mode
_lm_nonisolated_restype TOTTUL string of resource types banned from enqueue isolation
_lm_num_bnft_stats_buckets 1 number of buckets in the benefit stats hash table
_lm_num_msg_pools_per_type 1 number of GES message pools per type
_lm_num_proc_frz_dump 5 reconfiguration: max number processes to dump in frz
_lm_num_pt_buckets 8192 number of buckets in the object affinity hash table
_lm_num_pt_latches 128 number of latches in the object affinity hash table
_lm_omni_ack_timeout 60 Max time to wait for omni acks before triggering netcheck in secs
_lm_optmode_switch 0 GES: Optmode switching for enqueues (none, manual, stats-driven)
_lm_pdb_domains_enable 7 enable pdb domains in DLM
_lm_pdb_preopen TRUE enable pdb preopen
_lm_pdb_preopen_timeout 1800 pdb preopen timeout in seconds
_lm_pdb_wait_all_gone FALSE pdb domain attach wait until all locks are gone
_lm_pdb_weight_opts 90 options to size RHT structures per pdb
_lm_postevent_buffer_size 256 postevent buffer size
_lm_preregister_css_restype CF enqueue type that requires pre-registration to css
_lm_proactive_rcvinst_opts 3 proactive recovery instance attach options
_lm_proc_freeze_timeout 70 reconfiguration: process freeze timeout
_lm_proc_frz_dump_timeout 500 reconfiguration: process freeze dump timeout (msec)
_lm_process_batching TRUE GES implicit process batching for IPC messages
_lm_process_lock_q_scan_limit 100 limit on scanning process lock queue instead of resource convert lock
_lm_procs 1088 number of client processes configured for cluster database
_lm_psrcfg TRUE enable pseudo reconfiguration
_lm_rac_spare_dp1 0 rac parameter dp1
_lm_rac_spare_dp10 rac parameter dp10
_lm_rac_spare_dp11 0 rac parameter dp11
_lm_rac_spare_dp12 0 rac parameter dp12
_lm_rac_spare_dp13 0 rac parameter dp13
_lm_rac_spare_dp14 0 rac parameter dp14
_lm_rac_spare_dp15 0 rac parameter dp15
_lm_rac_spare_dp16 0 rac parameter dp16
_lm_rac_spare_dp17 0 rac parameter dp17
_lm_rac_spare_dp18 0 rac parameter dp18
_lm_rac_spare_dp19 0 rac parameter dp19
_lm_rac_spare_dp2 100 rac parameter dp2
_lm_rac_spare_dp20 0 rac parameter dp20
_lm_rac_spare_dp21 0 rac parameter dp21
_lm_rac_spare_dp22 0 rac parameter dp22
_lm_rac_spare_dp23 0 rac parameter dp23
_lm_rac_spare_dp24 0 rac parameter dp24
_lm_rac_spare_dp25 0 rac parameter dp25
_lm_rac_spare_dp26 0 rac parameter dp26
_lm_rac_spare_dp27 0 rac parameter dp27
_lm_rac_spare_dp28 0 rac parameter dp28
_lm_rac_spare_dp29 0 rac parameter dp29
_lm_rac_spare_dp3 0 rac parameter dp3
_lm_rac_spare_dp30 0 rac parameter dp30
_lm_rac_spare_dp4 0 rac parameter dp4
_lm_rac_spare_dp5 0 rac parameter dp5
_lm_rac_spare_dp6 rac parameter dp6
_lm_rac_spare_dp7 rac parameter dp7
_lm_rac_spare_dp8 rac parameter dp8
_lm_rac_spare_dp9 rac parameter dp9
_lm_rac_spare_p1 0 rac parameter p1
_lm_rac_spare_p10 rac parameter p10
_lm_rac_spare_p11 0 rac parameter p11
_lm_rac_spare_p12 0 rac parameter p12
_lm_rac_spare_p13 0 rac parameter p13
_lm_rac_spare_p14 rac parameter p14
_lm_rac_spare_p15 rac parameter p15
_lm_rac_spare_p16 rac parameter p16
_lm_rac_spare_p2 0 rac parameter p2
_lm_rac_spare_p3 0 rac parameter p3
_lm_rac_spare_p4 0 rac parameter p4
_lm_rac_spare_p5 0 rac parameter p5
_lm_rac_spare_p6 rac parameter p6
_lm_rac_spare_p7 rac parameter p7
_lm_rac_spare_p8 rac parameter p8
_lm_rac_spare_p9 rac parameter p9
_lm_rcfg_kjcdump_time 60 dlm reconfiguration communication dump interval
_lm_rcfg_timeout 489 dlm reconfiguration timeout
_lm_rcvinst TRUE instance inheritance
_lm_rcvinst_atp_opt TRUE recovery instance optimization for ATP
_lm_rcvinst_sga_threshold 85 recovery buddy SGA threshold
_lm_rcvr_hang_allow_time 70 receiver hang allow time in seconds
_lm_rcvr_hang_cfio_kill FALSE to kill receiver hang at control file IO
_lm_rcvr_hang_check_frequency 10 receiver hang check frequency in seconds
_lm_rcvr_hang_check_system_load FALSE examine system load when check receiver health
_lm_rcvr_hang_kill TRUE to kill receiver hang
_lm_rcvr_hang_systemstate_dump_level 0 systemstate dump level upon receiver hang
_lm_receiver_type 0 receiver thread type performing receive function
_lm_recovery_pdbw_reduction 4 recovery member pdbw reduction
_lm_recovery_set 1 enable recovery set checking for accessing invalid domains
_lm_reloc_use_mhint FALSE if TRUE, AR-/AH-enqueues use mastering hints
_lm_remount_check_interval 100 LM remount check time interval in ms
_lm_req_max_life 36000 maximum life time of request in seconds
_lm_res_hash_bucket 0 number of resource hash buckets
_lm_res_part 128 number of resource partition configured for gcs
_lm_res_tm_hash_bucket 0 number of extra TM resource hash buckets
_lm_resend_open_convert_timeout 30 timeout in secs before resubmitting the open-convert
_lm_resource_behchng 3 GES resource behavior change enabling
_lm_resource_recycle_cnt 4 GES: number of resources to recycle optimization
_lm_ress 6000 number of resources configured for cluster database
_lm_rm_object_bypass TRUE enable read-mostly object bypass for HARIM
_lm_rm_slaves 1 number of remastering slaves
_lm_rs_priority_reset_delay 30 delay from end of reconfig to RS reducing its priority
_lm_send_mode auto GES send mode
_lm_send_queue_batching TRUE GES send queue message batching
_lm_send_queue_length 5000 GES send queue maximum length
_lm_sendproxy_reserve 25 GES percentage of send proxy reserve of send tickets
_lm_share_lock_opt TRUE if TRUE enables share lock optimization
_lm_share_lock_pdbisolation TRUE if TRUE enables share lock optimization with pdb isolation
_lm_share_lock_restype string of enqueue resource types eligible for S-optimisation
_lm_share_opt_async_open_pdb TRUE if TRUE enables s-opt with async open pdb
_lm_single_inst_affinity_lock FALSE enable single instance affinity lock optimization
_lm_singleton_pdb_opt TRUE RAC PDB singleton optimization
_lm_sndq_flush_int 5 send queue flush time interval (ms)
_lm_sp_slave_mode 0 sendproxy thread operation mode
_lm_sp_slaves 0 number of sendproxy threads
_lm_spare_threads 0 number of spare threads to be created by the GPnP master
_lm_spare_undo 0 number of spare undo tablespaces to be created by GPnP master
_lm_sq_batch_factor 2 GES send queue minimum batching factor
_lm_sq_batch_type auto GES send queue batching mechanism
_lm_sq_batch_waittick 3 GES send queue batching waittime in tick
_lm_sq_batch_waittick_worker 10 GES send queue batching waittime for worker in tick
_lm_sync_timeout 163 Synchronization timeout for DLM reconfiguration steps
_lm_throttle_time_interval 60 GES message throttle interval time in sec
_lm_ticket_active_sendback 50 Flow control ticket active sendback threshold
_lm_ticket_check_inject FALSE Inject tickets when flow control tkt leak discoverd
_lm_ticket_cluster_max 10000 GES messaging tickets cluster size maximum
_lm_ticket_cluster_per_inst 1000 GES messaging tickets cluster per instance
_lm_ticket_low_limit_warning 10 lowest number of avail tickets percentage threshold warning
_lm_ticket_min 50 GES messaging tickets per instance minimum
_lm_ticket_sgasize_divisor 50 GES messaging tickets sga size divisor
_lm_ticket_sgasize_max 5000 GES messaging tickets sga size maximum
_lm_tickets 1000 GES messaging tickets
_lm_timed_statistics_level 0 if non zero, it enables timed statistics on lmd and lms
_lm_tkt_leak_check_count 5 Consecutive low NULLACKs to trigger leak check
_lm_tkt_leak_check_seconds 300 Duration of leak check in seconds
_lm_tx_delta 16 TX lock localization delta
_lm_uid_default_lookup_value TRUE returns the default value for uid to id translation
_lm_use_gcr TRUE use GCR module if TRUE
_lm_use_new_defmsgtmo_action TRUE use new defered msg queue timeout action
_lm_use_tx_tsn TRUE use undo tsn affinity master as TX enqueue master
_lm_use_us_timer FALSE Use microsecond timer for LM hist
_lm_validate_pbatch FALSE GES process batch validation
_lm_wait_for_hub_rcv_timeout 300000 read-only insts wait for hub avaliable to recover in millis
_lm_wait_pending_send_queue TRUE GES wait on pending send queue
_lm_watchpoint_kjmddp list of kjmddp fields for memory watchpoint
_lm_watchpoint_maximum 3 GES number of watchpoints
_lm_watchpoint_timeout 3600 GES maximum time in seconds to keep watchpoint
_lm_worker_mode 0 LMS worker thread mode
_lm_worker_threads 0 number of LMS worker threads
_lm_xids 1196 number of transaction IDs configured for cluster database
_lmhb_aggressive_termination FALSE terminate instance immediately when fatal proc timeout exceeded
_lmhb_max_dynamic_hb 10 max number of proc heartbeats that can be dynamically monitored
_lmhb_min_pct_hbcnt 0 minimum heartbeat ticks to not be flagged as hung (percent)
_lmhb_minimum_idle_cpu_pct_for_action 10 minimum idle CPU percentage for resolution action
_lmhb_procstate_dump_cputime_limit 60 hb diagnostic cputime limit for process state dump in secs
_lmhb_procstate_dump_runtime_limit 60 hb diagnostic runtime limit for process state dump in secs
_lmhb_select_final_blkr FALSE selects ultimate non-fatal blocker in hang chain (if present)
_lmn_invalidlkr_enabled TRUE suppl logging for invalid lkr enabled
_lms_rollbacks 0 Maximum number of CR rollbacks per block under LMS server
_load_without_compile none Load PL/SQL or Database objects without compilation
_loader_switch_to_bigdata 0 Allow switching of ORACLE_LOADER to ORACLE_BIGDATA access driver
_lob_use_locator_varying_width FALSE use varying width flag in lob locator
_local_arc_assert_on_wait FALSE Assert whenever local ORL arch waits for space
_local_communication_costing_enabled TRUE enable local communication costing when TRUE
_local_communication_ratio 50 set the ratio between global and local communication (0..100)
_local_hang_analysis_interval_secs 3 the interval at which local hang analysis is run
_lock_get_soft_assert_timeout 900 lock get soft assert timeout in seconds, 0 to disable
_lock_next_constraint_count 3 max number of attempts to lock _NEXT_CONSTRAINT
_lock_ref_constraint_count 50 number of nowait attempts to lock referential constraint
_lock_ref_descendants_count 50 number of nowait attempts to lock ref-partitioning descendants
_lock_ref_descendants_interval 100 sleep interval between ref-partitioning descendants lock attemps
_lockdown_error_ignore_user_type LOCAL User scope for ignoring lockdown error and log metadata
_lockdown_error_logging_mode LOG_WHEN_IGNORE_ERRO Log lockdown error in metadata table
R
_lockdown_exec_skip_invalidation FALSE Skip dependent lib-cache object invalidation upon disabling execution
_lockdown_execution_check FALSE Check if lockdown execution check feature is enabled in PDB
_log_archive_buffers 10 Number of buffers to allocate for archiving
_log_archive_dest_force_async FALSE force async on service destinations
_log_archive_network_redo_size 10 Log archive network redo buffer size used by ARCH
_log_archive_prot_auto_demote FALSE log archive protection auto demotion
_log_archive_strong_auth TRUE log archive security strong auth
_log_archive_trace_pids log archive trace pids parameter
_log_blocks_during_backup TRUE log block images when changed during backup
_log_buffer_coalesce FALSE Coalescing log buffers for log writes
_log_buffers_corrupt FALSE corrupt redo buffers before write
_log_buffers_debug FALSE debug redo buffers (slows things down)
_log_checkpoint_recovery_check 0 # redo blocks to verify after checkpoint
_log_client_ip_address_to_alert FALSE Log Client IP Address to alert file for each login
_log_committime_block_cleanout TRUE Log commit-time block cleanout
_log_deletion_policy mandatory archivelog deletion policy for mandatory/all destination
_log_file_sync_timeout 10 Log file sync timeout (centiseconds)
_log_max_optimize_threads 128 maximum number of threads to which log scan optimization is applied
_log_parallelism_dynamic TRUE Enable dynamic strands
_log_parallelism_max 2 Maximum number of log buffer strands
_log_private_mul 5 Private strand multiplier for log space preallocation
_log_private_parallelism_mul 10 Active sessions multiplier to deduce number of private strands
_log_read_buffer_size 8 buffer size for reading log files
_log_read_buffers 8 Number of log read buffers for media recovery
_log_segment_dump_parameter TRUE Dump KSP on Log Segmentation
_log_segment_dump_patch TRUE Dump Patchinfo on Log Segmentation
_log_silicon_secured_memory TRUE enable silicon secured memory (log)
_log_simultaneous_copies 8 number of simultaneous copies into redo buffer(# of copy latches)
_log_space_errors TRUE should we report space errors to alert log
_log_switch_timeout 0 Maximum number of seconds redos in the current log could span
_log_switch_tracing_iterations 5 no. of iterations to trace after logswitch timeout
_log_switch_tracing_timeout 200 dbwr to trace after logswitch timeout in secs
_log_write_info_size 4096 Size of log write info array
_log_write_worker_post_spinwait 0 How long log write workers spin wait before posting FGs
_log_write_worker_task_prefetch EARLY Log write worker prefetches tasks
_log_write_worker_task_spinwait 0 How long log write workers spin wait for imminent tasks
_log_writer_worker_dlm_hearbeat_update_freq 5000 LGWR worker DLM health-monitoring heartbeat update frequency (ms)
_logminer_parallel_read TRUE LogMiner parallel read
_logout_storm_rate 0 number of processes that can logout in a second
_logout_storm_retrycnt 600 maximum retry count for logouts
_logout_storm_timeout 5 timeout in centi-seconds for time to wait between retries
_long_bcast_ack_warning_threshold 500 threshold for long bcast ack warning messages in ms
_long_log_write_warning_threshold 500 threshold for long log write warning messages in ms
_longops_enabled TRUE longops stats enabled
_longops_per_latch 64 number of longops to allocate per latch
_lookup_versioned_profile FALSE Enable version lookup for lockdown profiles
_lost_write_parallelism_change_tracking 2 Maximum number of lost write change tracking buffers
_low_min_lwt_lt 4 lower minimum low threshold for LWTs
_low_priority_processes Low Priority Process Name Mask
_low_scn_headroom_warning_threshold_days 90 low SCN headroom warning threshold in days
_low_server_threshold 0 low server thresholds
_lowest_priority_processes Lowest Priority Process Name Mask
_lowres_drift_allowed_sec 5 allowed lowres timer drift for VKTM
_lreg_max_update_history 3600 lreg max update history
_lreg_significant_change 3 lreg significant change
_lreg_update_lag_mins 10 lreg update lag (in minutes)
_lrgdbcz6_ignore_restrictions FALSE Temp parameter to ignore app script restrictions for lrgdbcz6
_ltc_trace 0 tracing level for load table conventional
_lthread_cleanup_intv_secs 1 interval for cleaning lightweight threads in secs
_lthread_clnup_hk_wait_secs 3 timeout after hard killing operation for lthread to exit
_lthread_clnup_pmon_softkill_wait_secs 1 wait timeout for PMON between soft kill and hard kill of lthreads
_lthread_clnup_spawner_sk_wait_secs 30 timeout for spawner between soft kill and hard kill of lthreads
_lthread_debug FALSE Enable Debugging mode for lightweight threads
_lthread_enabled TRUE Enable lightweight threads
_lthread_idle_timeout_secs 600 Idle timeout in seconds for LWTs to terminate
_lthread_max_spawn_time_csecs 12000 maximum time interval a spawner will wait for a lthread to get ready
_lthread_spawn_check_intv_ms 10 time interval for a spawner to check for spawnee to get ready
_lthread_step_debugging FALSE Enable Step wise Debugging mode for lightweight threads
_main_dead_process_scan_interval 0 PMON main dead process scan interval (in seconds)
_map_service_name FALSE Map service names between Proxy PDB and Referenced PDB
_mask_user_sql_text FALSE Mask user SQL text in fixed tables and views
_master_direct_sends 63 direct sends for messages from director (DFS)
_mav_refresh_consistent_read TRUE refresh materialized views using consistent read snapshot
_mav_refresh_double_count_prevented FALSE materialized view MAV refreshes avoid double counting
_mav_refresh_opt 0 optimizations during refresh of materialized views
_mav_refresh_unionall_tables 3 # tables for union all expansion during materialized view refresh
_max_aq_persistent_queue_memory 10 max aq persistent queue memory
_max_async_wait_for_catch_up 20 Switchover wait time for async LNS to catch up in seconds
_max_clients_per_emon 8 maximum number of clients per emon
_max_cr_rollbacks 1000 Maximum number of CR rollbacks per block (LMS)
_max_data_transfer_cache_size 536870912 Maximum size of data transfer cache
_max_def_granule_size 67108864 maximum default SGA granule size
_max_defer_gran_xfer_atonce 10 Maximum deferred granules transferred by MMAN atonce
_max_dist_bt_chains 100 maximum number of chains for distributed transaction
_max_dynamic_processes 320 max dynamic processes count
_max_dynamic_sessions 504 max dynamic session count
_max_exponential_sleep 0 max sleep during exponential backoff
_max_filestat_tries 10 maximum number of file stat tries
_max_flashback_shrink_size 1048576 maximum size(in KBs) a datafile can be shrunk with flashback DB
_max_fsu_exptime 7200 Fast Space Usage: Entry expiration time in seconds
_max_fsu_segments 1024 Maximum segments to track for fast space usage
_max_fsu_sgapcent 10 Percentage of shared pool for Fast Space Usage
_max_fsu_stale_time 600 Allowed space usage staleness in seconds
_max_gg_extracts 65535 maximum limit for goldengate extract instances
_max_idle_blocker_types 0 Disable blocker types for MAX_IDLE_BLOCKER_TIME
_max_idle_sess_pcnt 95 session limit percentage to consider idle sessions as blocker
_max_incident_file_size 10G Maximum size (in KB, MB, GB, Blocks) of incident dump file
_max_index_block_lost_writes 10 Maximum allowable occurrences of lost writes on index blocks
_max_io_size 1048576 Maximum I/O size in bytes for sequential file accesses
_max_ios_per_worker 512 Maximum outstanding IOs per io_uring worker
_max_jsimt_autodumps 1 Max jsimt autodumps per day
_max_kcnibr_ranges 1048576 Max number of nonlogged data block ranges
_max_large_io 0 IORM:max number of large I/O's to issue
_max_largepage_alloc_time_secs 10 Maximum number of seconds to spend on largepage allocation
_max_library_cache_dumps 1000 Maximum number of dumps allowed
_max_lns_shutdown_archival_time 30 Maximum time spent by LNS to archive last log during shutdown
_max_log_write_parallelism 1 Maximum parallelism within a log write (auto=0)
_max_lwt_cpu_ratio 0 ratio to determine the maximum CPUs for LWTs
_max_outstanding_log_writes 2 Maximum number of outstanding redo log writes
_max_pdb_services 0 Maximum number of database services allowed inside the PDB
_max_pending_scn_bcasts 9 maximum number of pending SCN broadcasts
_max_physmem_perc_mmt 90 maximum percentage of physical memory for memory_max_target
_max_physmem_perc_sga 80 maximum percentage of physical memory for SGA
_max_physmem_perc_um 90 maximum percentage of physical memory for Unified Memory
_max_protocol_support 10000 Max occurrence protocols supported in a process
_max_queued_report_requests 300 Maximum number of report requests that can be queued in a list
_max_reasonable_scn_rate 32768 Max reasonable SCN rate
_max_remote_tool_requests 10 Maximum number of remote tool requests
_max_report_flushes_percycle 0 Max no of report requests that can be flushed per cycle
_max_row_cache_dumps 1000 Maximum number of dumps allowed
_max_rwgs_groupings 8192 maximum no of groupings on materialized views
_max_services 25000 maximum number of database services
_max_shrink_obj_stats 0 number of segments for which shrink stats will be maintained
_max_shutdown_abort_secs 10 Maximum wait time for shutdown abort in seconds
_max_sleep_holding_latch 4 max time to sleep while holding a latch
_max_small_io 0 IORM:max number of small I/O's to issue
_max_small_page_sga_size 0 Maximum SGA size with small pages
_max_spacebg_msgs_percentage 50 maximum space management interrupt message throttling
_max_spacebg_slaves 1024 maximum space management background slaves
_max_spacebg_tasks 8192 maximum space management background tasks
_max_sql_binds 65535 maximum number of binds allowed in a SQL statement
_max_sql_stmt_length 0 Maximum allowed sql statement length
_max_stmt_tries_sync 2 Maximum number of tries of a statement during Application Sync
_max_string_size_bypass 0 controls error checking for the max_string_size parameter
_max_sys_next_extent 0 Dictionary managed SYSTEM tablespace maximum next extent size in MB (a
_maxrpop_files_inst 4 Maxmimum files rpop works on per instance
_maxrpop_instances 8 Maxmimum rpop file instances
_maxval_job_queue_processes Maximum value of job queue slave processes parameter for the PDB
_maxval_max_idle_blocker_time 0 maximum value of max_idle_blocker_time
_maxval_max_idle_time 0 maximum value of max_idle_time
_mdapi_transform_engine LPX DDL transformation engine
_media_recovery_read_batch 32 media recovery block read batch
_mem_annotation_pr_lev 0 private memory annotation collection level
_mem_annotation_scale 1 memory annotation pre-allocation scaling
_mem_annotation_sh_lev 0 shared memory annotation collection level
_mem_annotation_store FALSE memory annotation in-memory store
_mem_std_extent_size 4096 standard extent size for fixed-size-extent heaps
_memoptimize_write_shrink_minsize TRUE shrinks Ingest Global Area size down to min size
_memoptimize_writes_allow_fk DISABLE enable both foreign key and memoptimize write for tables
_memoptimize_writes_no_wait FALSE enable no wait conventional insert path for memoptimize write
_memoptimize_xmem_pool_size 0 Size of MEMOPTIMIZE buffer pool for standard block size buffers on ext
_memory_adi_bytes_per_alloc 0 bytes per allocation to get memory application data integrity
_memory_adi_clear_versions FALSE enable clearing versions on huge pages
_memory_adi_enabled FALSE enable memory application data integrity
_memory_adi_extend FALSE enable ADI for kgh headers and free memory
_memory_adi_heap_mask 610 enable ADI versioning for these heaps
_memory_adi_module_mask 0 bit mask of modules to enable ADI versioning
_memory_adi_precise_errors FALSE enable precise memory application data integrity errors
_memory_broker_log_stat_entries 5 memory broker num stat entries
_memory_broker_marginal_utility_bc 12 Marginal Utility threshold pct for bc
_memory_broker_marginal_utility_imc 6 Marginal Utility threshold pct for imc
_memory_broker_marginal_utility_sp 7 Marginal Utility threshold pct for sp
_memory_broker_sga_grow_split TRUE if TRUE, allow sga grow to be split between cache and sp
_memory_broker_sga_grow_splitif_size 20 split sga target grow if atleast this many granules.
_memory_broker_sga_shrink_chunk_size 20 if kmgsbshnkbrk set, sga request resize chunk size in granules.
_memory_broker_sga_shrink_chunked TRUE if TRUE, break a large sga shrink request to chunks
_memory_broker_shrink_heaps 15 memory broker allow policy to shrink shared pool
_memory_broker_shrink_imc 15 memory broker allow policy to shrink imc pool
_memory_broker_shrink_java_heaps 900 memory broker allow policy to shrink java pool
_memory_broker_shrink_streams_pool 900 memory broker allow policy to shrink streams pool
_memory_broker_shrink_timeout 60000000 memory broker policy to timeout shrink shared/java pool
_memory_broker_stat_interval 30 memory broker statistics gathering interval for auto sga
_memory_checkinuse_timeintv 30 check inuse time interval
_memory_imm_mode_without_autosga TRUE Allow immediate mode without sga/memory target
_memory_initial_sga_split_perc 60 Initial default sga target percentage with memory target
_memory_management_tracing 0 trace memory management activity
_memory_max_tgt_inc_cnt 0 counts the times checker increments memory target
_memory_mgmt_fail_immreq FALSE always fail immediate mode request
_memory_mgmt_immreq_timeout 150 time in seconds to time out immediate mode request
_memory_nocancel_defsgareq FALSE do not cancel deferred sga reqs with auto-memory
_memory_per_cpu_count 0 memory per cpu count
_memory_sanity_check 0 partial granule sanity check
_merge_monitor_threshold 10000 threshold for pushing information to MERGE monitoring
_messages 640 message queue resources - dependent on # processes & # buffers
_mga_large_page_path large page path
_mga_pid_root_head_count 16 mga pid root head count
_mgd_rcv_handle_orphan_datafiles FALSE Managed recovery handle orphan datafile situation
_midtier_affinity_cluswait_prc_threshold 6 cluster wait precentage threshold to enter affinity
_midtier_affinity_goodness_threshold 2000 goodness gradient threshold to dissolve affinity
_min_autotask_percentage
_min_lwt_lt 10 minimum low threshold for LWTs
_min_spacebg_slaves 2 minimum space management background slaves
_min_sys_percentage
_min_sys_process 2 minimum system processess
_min_time_between_psp0_diag_secs 300 minimum time between PSP0 diagnostic used for flow control
_min_undosegs_for_parallel_fptr 100 minimum undo segments for parallel first-pass recovery
_minact_timeout 180 Configurable interval for minact-scn
_minfree_plus 0 max percentage of block space + minfree before we mark block full
_minimal_stats_aggregation TRUE prohibit stats aggregation at compile/partition maintenance time
_minimum_blocks_to_shrink 0 minimum number freeable blocks for shrink to be present
_minimum_db_flashback_retention 60 Minimum flashback retention
_minimum_extents_to_shrink 1 minimum number freeable extents for shrink to be present
_minmax_spacebg_slaves 2 min-max space management background slaves
_mira_free_unused_buffers TRUE free unused buffers when idle
_mira_mark_archivelog_timeout 60 mira mark archive log as applied timeout
_mira_num_local_buffers 25 Number of local buffers for multi instance media recovery
_mira_num_receive_buffers 25 Number of receive buffers for multi instance media recovery
_mira_preferred_threads_to_recover 0 preferred threads to recover at coordinator instance
_mira_rcv_catchup_buffers 5 Number of buffers to allocate before catch up
_mira_rcv_max_buffers 500 Maximum number of outstanding buffers
_mira_sender_process 2 Number of sender processes
_mirror_redo_buffers FALSE Save buffers for debugging redo corruptions
_mle_compilation_dump_graph_on_crash FALSE dump compilation graphs to the trace file when compilation crashes in
_mle_compilation_errors_are_fatal FALSE failed compilations are fatal for MLE
_mle_compilation_sync FALSE force compilation to be synchronous for MLE
_mle_compile_immediately FALSE force compilation for MLE
_mle_cross_context_statement_cache TRUE enable sharing of parsed statements across MLE contexts.
_mle_enable_compilation TRUE enable runtime compilation for MLE
_mle_enable_compilation_isolates TRUE enable MLE runtime compilation in separate isolates
_mle_enable_mpk strict Enable memory protection keys in MLE.
_mle_enable_recursion TRUE enable recursive/reentrant MLE
_mle_max_heap_size 1000 maximum heap size used by MLE in a session, in MB
_mle_session_statement_cache_size 30 number of statements to cache in MLE per session.
_mmv_query_rewrite_enabled TRUE allow rewrites with multiple MVs and/or base tables
_modify_column_index_unusable FALSE allow ALTER TABLE MODIFY(column) to violate index key length limit
_modify_other_app_object FALSE Parameter to allow modification of another application's object
_modify_protected_profile_parameters List of password parameters allowed to be modified for protected profi
_monitor_sql_stmt_length FALSE Monitor sql statement length
_monitor_workload_interval 24 workload monitoring interval in hours
_mpmt_enabled FALSE MPMT mode enabled
_mpmt_enabled_backgrounds * mpmt enabled backgrounds
_mpmt_fg_enabled FALSE MPMT mode foreground enabled
_mpmt_fthread_mode 0 MPMT - Fthreads Mode for FG/BG/ALL
_mpmt_prefer_enabled TRUE MPMT prefer mode enabled
_mpmt_procs_per_osp 100 max procs per osp
_mpmt_single_process_instance FALSE MPMT - single process instance mode enabled
_mpmt_use_fthread FALSE MPMT - Use Fthreads
_mt_redo_log_record_wakeup_interval 1440 Wake up time in minutes to purge redo log table records
_mt_rfs_flush_header_interval 10 MT flush header interval
_mt_rfs_gap_interval 720 MT Gap limit
_mt_rfs_reap_comp_io_interval 2 MT reap completed IO interval in secs
_mt_rfs_register_lag_seq 24 MT Register Lag Sequence
_mttr_stat_cf_update_freq 120 frequency of update MTTR statistics into controlfile
_multi-statement_pdml_support PDML is multi-statement PDML allowed (remove touch-once restriction)
_multi_instance_pmr TRUE enable multi instance redo apply
_multi_join_key_table_lookup TRUE TRUE iff multi-join-key table lookup prefetch is enabled
_multi_transaction_optimization_enabled TRUE reduce SGA memory use during create of a partitioned table
_multiple_char_set_cdb TRUE Multiple character sets enabled in CDB
_multiple_instance_recovery FALSE use multiple instances for media recovery
_multiple_name_convert_patterns FALSE apply multiple patterns on a name during file_name_convert
_mutex_skip_spin_waiter_count 20 Active waiter count to skip mutex spin
_mutex_spin_count 255 Mutex spin count
_mutex_wait_scheme 2 Mutex wait scheme
_mutex_wait_time 1 Mutex wait time
_mv_access_compute_fresh_data ON mv access compute fresh data
_mv_add_log_placeholder TRUE add log placeholder
_mv_cleanup_orphaned_metadata TRUE cleanup orphaned materialized view metadata
_mv_complete_refresh_conventional FALSE use conventional INSERTs for MV complete refresh
_mv_deferred_no_log_age_val TRUE avoid build deferred MV log age validate
_mv_expression_extend_size 4096 MV expression extend size
_mv_generalized_oj_refresh_opt TRUE enable/disable new algorithm for MJV with generalized outer joins
_mv_master_lock_timeout 3 timeout that mv create/drop waits to lock the master table
_mv_refresh_ana 0 what percent to analyze after complete/PCT refresh
_mv_refresh_costing rule refresh decision based on cost or on rules
_mv_refresh_delta_fraction 10 delta mv as fractional percentage of size of mv
_mv_refresh_enhanced_dml_detection ON_RC enable enhanced detection of DML types from MV log
_mv_refresh_eut TRUE refresh materialized views using EUT(partition)-based algorithm
_mv_refresh_force_parallel_query 0 force materialized view refreshes to use parallel query
_mv_refresh_insert_no_append TRUE materialized view refresh using insert no append
_mv_refresh_new_setup_disabled FALSE materialized view MV refresh new setup disabling
_mv_refresh_no_idx_rebuild FALSE avoid index rebuild as part of the MV refresh
_mv_refresh_pipe_timeout 600 timeout that MV refresh coordinator waits for a job pipe
_mv_refresh_pkfk_data_units_opt auto control MV refresh based on the assumption of PK-FK data units
_mv_refresh_pkfk_relationship_opt TRUE control MV refresh based on the use of PK-FK relationships
_mv_refresh_rebuild_percentage 10 minimum percentage change required in MV to force an indexrebuild
_mv_refresh_selections TRUE create materialized views with selections and fast refresh
_mv_refresh_shrink_log TRUE materialized view refresh shrink MV log
_mv_refresh_truncate_log FALSE materialized view refresh truncate MV log
_mv_refresh_update_analysis TRUE materialized view refresh using update analysis
_mv_refresh_use_hash_sj TRUE use hash_sj hint in queries
_mv_refresh_use_no_merge TRUE use no_merge hint in queries
_mv_refresh_use_stats FALSE pass cardinality hints to refresh queries
_mv_refsched_timeincr 300000 proportionality constant for dop vs. time in MV refresh
_mv_rolling_inv FALSE create/alter mv uses rolling cursor invalidation instead of immediate
_mwin_schedule TRUE Enable/disable Maintenance Window Schedules
_nameservice_consistency_check TRUE NameService Consistency check switch
_nameservice_request_batching TRUE NameService request batching switch
_nanovos_library Nanovos instance object path
_nanovos_name Nanovos instance name
_nanovos_type Nanovos instance type
_nbr_recovery_max_request_size 8 the maximum size in MBs of a request for data blocks
_nbr_recovery_target_bufs 0 the target number of oustanding buffers to maintain
_nbr_recovery_timeout 60 seconds recovery will wait for any invalid block range to arrive
_nchar_imp_cnv TRUE NLS allow Implicit Conversion between CHAR and NCHAR
_nchar_imp_conv TRUE should implicit conversion bewteen clob and nclob be allowed
_ncmb_readahead_enabled 0 enable multi-block readahead for an index scan
_ncmb_readahead_tracing 0 turn on multi-block readahead tracing
_ncomp_shared_objects_dir native compilation shared objects dir
_ndb_enable FALSE Native Database Blockchain Enable
_need_administer_fine_grained_audit_policy_for_fga TRUE Check ADMINISTER FINE GRAINED AUDIT POLICY privilege for administering
_need_administer_redaction_policy_for_redact TRUE Check ADMINISTER REDACTION POLICY privilege for administering REDACT p
_need_administer_row_level_security_policy_for_rls TRUE Check ADMINISTER ROW LEVEL SECURITY POLICY privilege for administering
_need_create_table_privilege_for_redact FALSE Check CREATE TABLE privilege for administering REDACT policy
_nested_loop_fudge 100 nested loop fudge
_nested_mv_fast_oncommit_enabled TRUE nested MV refresh fast on commit allowed
_netldp_common_users_as_local List of common users to be treated as local for network lockdown
_new_initial_join_orders TRUE enable initial join orders based on new ordering heuristics
_new_sort_cost_estimate TRUE enables the use of new cost estimate for sort
_newdev_service_sim FALSE simulate Newdev RDBMS restrictions
_newsort_enabled TRUE controls whether new sorts can be used as system sort
_newsort_ordered_pct 63 controls when new sort avoids sorting ordered input
_newsort_type 0 specifies options for the new sort algorithm
_next_constraint_cache_size 5 size of _NEXT_CONSTRAINT cache
_next_pdbid 3 Hint for the next PDBID to use when creating a new PDB entry
_nineteenth_spare_parameter nineteenth spare parameter - integer
_nineteenth_spare_pdb_parameter nineteenth spare pdb parameter - integer
_ninetieth_spare_parameter ninetieth spare parameter - string
_ninety-eighth_spare_parameter ninety-eighth spare parameter - string
_ninety-fifth_spare_parameter ninety-fifth spare parameter - string
_ninety-first_spare_parameter ninety-first spare parameter - string
_ninety-fourth_spare_parameter ninety-fourth spare parameter - string
_ninety-ninth_spare_parameter ninety-ninth spare parameter - string
_ninety-second_spare_parameter ninety-second spare parameter - string
_ninety-seventh_spare_parameter ninety-seventh spare parameter - string
_ninety-sixth_spare_parameter ninety-sixth spare parameter - string
_ninety-third_spare_parameter ninety-third spare parameter - string
_ninth_spare_parameter ninth spare parameter - integer
_ninth_spare_pdb_parameter ninth spare pdb parameter - integer
_nlj_batching_ae_flag 2 FAE flag type set after restoring to IO batching buffer
_nlj_batching_enabled 1 enable batching of the RHS IO in NLJ
_nlj_batching_misses_enabled 1 enable exceptions for buffer cache misses
_nls_binary TRUE force binary collation
_nls_parameter_sync_enabled TRUE enables or disables updates to v$parameter whenever an alter session s
_no_audit FALSE enable No Audit based on session user
_no_audit_user list of No Audit users
_no_catalog options whose schemas should not be created
_no_objects FALSE no object features are used
_no_or_expansion FALSE OR expansion during optimization disabled
_no_recovery_through_resetlogs FALSE no recovery through this resetlogs operation
_no_small_file FALSE Not to apply new extent scheme for small file temp spaces
_no_snapshot_root_clone FALSE No snapshot clone during Application Root Clone creation
_no_stale_joinback_rewrite FALSE No joinbacks if mv is stale
_node_instcnt_average_interval 1800 node inst count average interval in seconds
_node_instcnt_sample_frequency 60 node inst count average sample frequency in seconds
_node_instcnt_update_frequency 300 node inst count average global update frequency in seconds
_nologging_apply_stall_time 1000 milli-seconds recovery waits after DTC full before changing RCVID
_nologging_block_cleanout_delay 300 Nologging standby: block cleanout delay (seconds)
_nologging_fetch_demote_count 10 Nologging standby fetch demote count
_nologging_fetch_initial_interval 2 seconds recovery waits between issuing fetches for old ranges
_nologging_fetch_retry_interval_cold 1800 Interval before fetch request for older invalid block range
_nologging_fetch_retry_interval_hot 60 Interval before fetch request for recently created invalid block
_nologging_fetch_slv_wt 600 Nologging standby fetch slave wait time
_nologging_kcnbuf_hash_buckets 1024 Number of nologging buffer hash buckets
_nologging_kcnbuf_hash_latches 256 Number of nologging buffer hash latches
_nologging_load_slotsz 1048576 Nologging standby: direct load buffer size
_nologging_mode_override 0 Override the database logging mode; 1=Force, 2=NoForce, 3=LP, 4=DA
_nologging_progress_keep_alive 10 Nologging standby progress keep alive time
_nologging_sdcl_append_wait 200 Nologging standby append sdcl wait time
_nologging_sendbuf_ratio 90 Nologging standby: outstanding send buffer ratio
_nologging_slots 20 Nologging standby: initial buffer count
_nologging_standby_cold_buffer_timeout 500 Centi-seconds recovery will wait for a buffer that is not being sent b
_nologging_standby_dtc_expire 600 The number of seconds a Data Transfer Cache buffer may remain unclaime
_nologging_standby_fetch_disable FALSE controls whether invalid block ranges are fecthed during recovery
_nologging_standby_hot_buffer_timeout 500 Centi-seconds recovery will wait for a buffer being sent by a direct l
_nologging_standby_refetch_disable FALSE controls fetching of pre-existing invalid block ranges during standby
_nologging_txn_cmt_wait 1500 Nologging standby transaction commit wait time
_nologging_txn_history_to_sessions_percent 100 Ratio, as a percentage, of sessions to set X$KCNT max. size
_non_app_cross_con_collection FALSE enable cross container collection for non-application objects
_non_app_ignore_errors TRUE ignore errors during containers() on non-application object
_non_blocking_hard_parse_min_extend_time 2 minimum additional lifetime added to cursor
_nonce_history_buffer_size 0 Size of Nonce History Buffer
_nonfatalprocess_redo_dump_time_limit 3600 time limit, in secs, for diagnostic redo dumps by a non-fatal process
_noseg_for_unusable_index_enabled TRUE no segments for unusable indexes if set to TRUE
_not_waiting_significant_CPU 10 percent of CPU time when not in a wait which is significant
_notification_directive ENABLE enable/disable notification directive$
_notify_crs FALSE notify cluster ready services of startup and shutdown
_ns_max_flush_wt 1 Flush wait time for NetServer to flush oustanding writes
_ns_max_send_delay 15 Data Loss Time Bound for NetServer
_num_longop_child_latches 4 number of child latches for long op array
_num_rlslaves 8 number of rl slaves to clear orls
_num_undostat_intervals 576 number of intervals for undo statistics in SGA
_numa_buffer_cache_stats 0 Configure NUMA buffer cache stats
_numa_shift_enabled TRUE Enable NUMA shift
_numa_shift_value 0 user defined value for numa nodes shift
_numa_trace_level 0 numa trace event
_number_cached_attributes 10 maximum number of cached attributes per instance
_number_cached_group_memberships 2048 maximum number of cached group memberships
_number_group_memberships_per_cache_line 6 maximum number of group memberships per cache line
_number_ksim_group_req_threshold 64 ksim maximum number of group operations requests
_number_of_undo_blocks_to_prefetch 8 number of undo blocks to prefetch
_numgrans_per_file 64 Number of granules per SGA file
_nusa_data_containers list of data containers in the nusa universe
_nusa_metadata_store metadata store in nusa
_nusa_remote_data_containers disk groups with remote access for NUSA
_nvm_asm_dispatchers 1 number of NVM Dispatcher Slaves for ASM
_nvm_dbw_dispatchers 1 number of NVM Dispatcher Slaves for DBWRs
_nvm_dispatcher_bind_policy 1 NVM Dispatcher binding policy
_nvm_dispatchers 1 number of NVM Dispatcher Slaves
_nvmeof_zcopy_enable FALSE Enable Zero Copy for NVMeoF
_obj_ckpt_tracing 0 Enable object checkpoint tracing
_object_activity_control 0 controls tracing for object activity tracking system (OATS)
_object_activity_disable 0 disables some object activity tracking (OATS)
_object_activity_tracking TRUE enable object activity tracking system (OATS)
_object_link_fixed_enabled TRUE object linked views evaluated using fixed table
_object_linked_remote FALSE Enable remote transformation of Object Linked table
_object_number_cache_size 5 Object number cache size
_object_reuse_bast 2 if 1 or higher, handle object reuse
_object_statistics TRUE enable the object level statistics collection
_object_stats_max_entries 3072 Maximum number of entries to be tracked per stat
_objectstore_odm_segment_size 0 Internal variable Swift DLO segment size for ODM object store lib
_obsolete_result_cache_mode MANUAL USERS SHOULD NOT SET THIS! Used for old qksced parameterof result_cach
_odci_aggregate_save_space FALSE trade speed for space in user-defined aggregation
_odci_index_pmo_rebuild FALSE domain index running pmo rebuild
_offline_rollback_segments offline undo segment list
_ofs_read_buffer_size 1031680 OFS read ahead buffer size in bytes
_ofs_write_buffer_size 1048576 OFS write buffer size in bytes
_ogg_online_ddl TRUE ogg online ddl marker
_ogms_home GMS home directory
_olap_adv_comp_stats_cc_precomp 20 do additional predicate stats analysis for AW rowsource
_olap_adv_comp_stats_max_rows 100000 do additional predicate stats analysis for AW rowsource
_olap_aggregate_buffer_size 1048576 OLAP Aggregate max buffer size
_olap_aggregate_flags 0 OLAP Aggregate debug flags
_olap_aggregate_function_cache_enabled TRUE OLAP Aggregate function cache enabled
_olap_aggregate_max_thread_tuples 5000 OLAP Aggregate max thread tuples creation
_olap_aggregate_min_buffer_size 1024 OLAP Aggregate min buffer size
_olap_aggregate_min_thread_status 64 OLAP Aggregate minimum cardinality of dimensions for thread
_olap_aggregate_multipath_hier FALSE OLAP Aggregate Multi-path Hierarhies enabled
_olap_aggregate_statlen_thresh 1024 OLAP Aggregate status array usage threshold
_olap_aggregate_work_per_thread 1024 OLAP Aggregate max work parents
_olap_aggregate_worklist_max 5000 OLAP Aggregate max worklists generated at once
_olap_allocate_errorlog_format %8p %8y %8z %e (%n) OLAP Allocate Errorlog Format
_olap_allocate_errorlog_header Dim Source Ba OLAP Allocate Errorlog Header format
sis
%-8d %-8s %-8b Descr
iption
-------- -------- --
------ -----------
_olap_analyze_max 10000 OLAP DML ANALYZE command max cells to analyze
_olap_continuous_trace_file false OLAP logging definition
_olap_dbgoutfile_echo_to_eventlog FALSE OLAP DbgOutfile copy output to event log (tracefile)
_olap_dimension_corehash_force FALSE OLAP Dimension In-Core Hash Table Force
_olap_dimension_corehash_large 50000 OLAP Dimension In-Core Hash Table Large Threshold
_olap_dimension_corehash_pressure 90 OLAP Dimension In-Core Hash Table Pressure Threshold
_olap_dimension_corehash_size 30 OLAP Dimension In-Core Hash Table Maximum Memory Use
_olap_disable_loop_optimized FALSE Disable LOOP OPTIMIZED directive in OLAP_TABLE
_olap_eif_export_lob_size 2147483647 OLAP EIF Export BLOB size
_olap_lmgen_dim_size 100 Limitmap generator dimension column size
_olap_lmgen_meas_size 1000 Limitmap generator measure column size
_olap_object_hash_class 3 OLAP Object Hash Table Class
_olap_page_pool_expand_rate 20 OLAP Page Pool Expand Rate
_olap_page_pool_hi 50 OLAP Page Pool High Watermark
_olap_page_pool_hit_target 100 OLAP Page Pool Hit Target
_olap_page_pool_low 262144 OLAP Page Pool Low Watermark
_olap_page_pool_pressure 90 OLAP Page Pool Pressure Threshold
_olap_page_pool_shrink_rate 50 OLAP Page Pool Shrink Rate
_olap_parallel_update_server_num 0 OLAP parallel update server count
_olap_parallel_update_small_threshold 1000 OLAP parallel update threshold for number of small pagespaces
_olap_parallel_update_threshold 1000 OLAP parallel update threshold in pages
_olap_row_load_time_precision DEFAULT OLAP Row Load Time Precision
_olap_sesscache_enabled TRUE OLAP Session Cache knob
_olap_sort_buffer_pct 10 OLAP Sort Buffer Size Percentage
_olap_sort_buffer_size 262144 OLAP Sort Buffer Size
_olap_statbool_corebits 20000000 OLAP Status Boolean max incore bits
_olap_statbool_threshold 8100 OLAP Status Boolean CBM threshold
_olap_table_function_statistics FALSE Specify TRUE to output OLAP table function timed statistics trace
_olap_wrap_errors FALSE Wrap error messages to OLAP outfile
_olapi_history_retention FALSE enable olapi history retention
_olapi_iface_object_history 1000 enable olapi interface object history collection
_olapi_iface_object_history_retention FALSE enable olapi interface object history retention
_olapi_iface_operation_history_retention FALSE enable olapi interface operation history retention
_olapi_interface_operation_history 1000 enable olapi interface operation history collection
_olapi_memory_operation_history 1000 enable olapi memory alloc/free history collection
_olapi_memory_operation_history_pause_at_seqno 0 enable olapi memory alloc/free history collection pausing
_olapi_memory_operation_history_retention FALSE enable olapi memory operation history retention
_olapi_session_history 300 enable olapi session history collection
_olapi_session_history_retention FALSE enable olapi session history retention
_old_connect_by_enabled FALSE enable/disable old connect by
_old_extent_scheme FALSE Revert to old extent allocation
_ols_cleanup_task TRUE Clean up unnecessary entries in OLS sessinfo table
_oltp_comp_dbg_scan 0 oltp compression scan debug
_oltp_compress_dbg 0 oltp compression debug
_oltp_compression TRUE oltp compression enabled
_oltp_compression_gain 10 oltp compression gain
_oltp_spill FALSE spill rows for oltp compression if loader pga limit is exceeded
_omf enabled enable/disable OMF
_omni_enqueue_enable 1 Enable Omni Enqueue feature (0 = disable, 1 = enable on ASM (default),
_one-hundred-and-eighteenth_spare_parameter one-hundred-and-eighteenth spare parameter - string
_one-hundred-and-eighth_spare_parameter one-hundred-and-eighth spare parameter - string
_one-hundred-and-eightieth_spare_parameter FALSE one-hundred-and-eightieth spare parameter - boolean
_one-hundred-and-eighty-eighth_spare_parameter FALSE one-hundred-and-eighty-eighth spare parameter - boolean
_one-hundred-and-eighty-fifth_spare_parameter FALSE one-hundred-and-eighty-fifth spare parameter - boolean
_one-hundred-and-eighty-first_spare_parameter FALSE one-hundred-and-eighty-first spare parameter - boolean
_one-hundred-and-eighty-fourth_spare_parameter FALSE one-hundred-and-eighty-fourth spare parameter - boolean
_one-hundred-and-eighty-ninth_spare_parameter FALSE one-hundred-and-eighty-ninth spare parameter - boolean
_one-hundred-and-eighty-second_spare_parameter FALSE one-hundred-and-eighty-second spare parameter - boolean
_one-hundred-and-eighty-seventh_spare_parameter FALSE one-hundred-and-eighty-seventh spare parameter - boolean
_one-hundred-and-eighty-sixth_spare_parameter FALSE one-hundred-and-eighty-sixth spare parameter - boolean
_one-hundred-and-eighty-third_spare_parameter FALSE one-hundred-and-eighty-third spare parameter - boolean
_one-hundred-and-eleventh_spare_parameter one-hundred-and-eleventh spare parameter - string
_one-hundred-and-fifteenth_spare_parameter one-hundred-and-fifteenth spare parameter - string
_one-hundred-and-fifth_spare_parameter one-hundred-and-fifth spare parameter - string
_one-hundred-and-fiftieth_spare_parameter FALSE one-hundred-and-fiftieth spare parameter - boolean
_one-hundred-and-fifty-eighth_spare_parameter FALSE one-hundred-and-fifty-eighth spare parameter - boolean
_one-hundred-and-fifty-fifth_spare_parameter FALSE one-hundred-and-fifty-fifth spare parameter - boolean
_one-hundred-and-fifty-first_spare_parameter FALSE one-hundred-and-fifty-first spare parameter - boolean
_one-hundred-and-fifty-fourth_spare_parameter FALSE one-hundred-and-fifty-fourth spare parameter - boolean
_one-hundred-and-fifty-ninth_spare_parameter FALSE one-hundred-and-fifty-ninth spare parameter - boolean
_one-hundred-and-fifty-second_spare_parameter FALSE one-hundred-and-fifty-second spare parameter - boolean
_one-hundred-and-fifty-seventh_spare_parameter FALSE one-hundred-and-fifty-seventh spare parameter - boolean
_one-hundred-and-fifty-sixth_spare_parameter FALSE one-hundred-and-fifty-sixth spare parameter - boolean
_one-hundred-and-fifty-third_spare_parameter FALSE one-hundred-and-fifty-third spare parameter - boolean
_one-hundred-and-first_spare_parameter one-hundred-and-first spare parameter - string
_one-hundred-and-fortieth_spare_parameter one-hundred-and-fortieth spare parameter - string list
_one-hundred-and-forty-eighth_spare_parameter FALSE one-hundred-and-forty-eighth spare parameter - boolean
_one-hundred-and-forty-fifth_spare_parameter FALSE one-hundred-and-forty-fifth spare parameter - boolean
_one-hundred-and-forty-first_spare_parameter FALSE one-hundred-and-forty-first spare parameter - boolean
_one-hundred-and-forty-fourth_spare_parameter FALSE one-hundred-and-forty-fourth spare parameter - boolean
_one-hundred-and-forty-ninth_spare_parameter FALSE one-hundred-and-forty-ninth spare parameter - boolean
_one-hundred-and-forty-second_spare_parameter FALSE one-hundred-and-forty-second spare parameter - boolean
_one-hundred-and-forty-seventh_spare_parameter FALSE one-hundred-and-forty-seventh spare parameter - boolean
_one-hundred-and-forty-sixth_spare_parameter FALSE one-hundred-and-forty-sixth spare parameter - boolean
_one-hundred-and-forty-third_spare_parameter FALSE one-hundred-and-forty-third spare parameter - boolean
_one-hundred-and-fourteenth_spare_parameter one-hundred-and-fourteenth spare parameter - string
_one-hundred-and-fourth_spare_parameter one-hundred-and-fourth spare parameter - string
_one-hundred-and-nineteenth_spare_parameter one-hundred-and-nineteenth spare parameter - string
_one-hundred-and-ninetieth_spare_parameter FALSE one-hundred-and-ninetieth spare parameter - boolean
_one-hundred-and-ninety-eighth_spare_parameter FALSE one-hundred-and-ninety-eighth spare parameter - boolean
_one-hundred-and-ninety-fifth_spare_parameter FALSE one-hundred-and-ninety-fifth spare parameter - boolean
_one-hundred-and-ninety-first_spare_parameter FALSE one-hundred-and-ninety-first spare parameter - boolean
_one-hundred-and-ninety-fourth_spare_parameter FALSE one-hundred-and-ninety-fourth spare parameter - boolean
_one-hundred-and-ninety-ninth_spare_parameter FALSE one-hundred-and-ninety-ninth spare parameter - boolean
_one-hundred-and-ninety-second_spare_parameter FALSE one-hundred-and-ninety-second spare parameter - boolean
_one-hundred-and-ninety-seventh_spare_parameter FALSE one-hundred-and-ninety-seventh spare parameter - boolean
_one-hundred-and-ninety-sixth_spare_parameter FALSE one-hundred-and-ninety-sixth spare parameter - boolean
_one-hundred-and-ninety-third_spare_parameter FALSE one-hundred-and-ninety-third spare parameter - boolean
_one-hundred-and-ninth_spare_parameter one-hundred-and-ninth spare parameter - string
_one-hundred-and-second_spare_parameter one-hundred-and-second spare parameter - string
_one-hundred-and-seventeenth_spare_parameter one-hundred-and-seventeenth spare parameter - string
_one-hundred-and-seventh_spare_parameter one-hundred-and-seventh spare parameter - string
_one-hundred-and-seventieth_spare_parameter FALSE one-hundred-and-seventieth spare parameter - boolean
_one-hundred-and-seventy-eighth_spare_parameter FALSE one-hundred-and-seventy-eighth spare parameter - boolean
_one-hundred-and-seventy-fifth_spare_parameter FALSE one-hundred-and-seventy-fifth spare parameter - boolean
_one-hundred-and-seventy-first_spare_parameter FALSE one-hundred-and-seventy-first spare parameter - boolean
_one-hundred-and-seventy-fourth_spare_parameter FALSE one-hundred-and-seventy-fourth spare parameter - boolean
_one-hundred-and-seventy-ninth_spare_parameter FALSE one-hundred-and-seventy-ninth spare parameter - boolean
_one-hundred-and-seventy-second_spare_parameter FALSE one-hundred-and-seventy-second spare parameter - boolean
_one-hundred-and-seventy-seventh_spare_parameter FALSE one-hundred-and-seventy-seventh spare parameter - boolean
_one-hundred-and-seventy-sixth_spare_parameter FALSE one-hundred-and-seventy-sixth spare parameter - boolean
_one-hundred-and-seventy-third_spare_parameter FALSE one-hundred-and-seventy-third spare parameter - boolean
_one-hundred-and-sixteenth_spare_parameter one-hundred-and-sixteenth spare parameter - string
_one-hundred-and-sixth_spare_parameter one-hundred-and-sixth spare parameter - string
_one-hundred-and-sixtieth_spare_parameter FALSE one-hundred-and-sixtieth spare parameter - boolean
_one-hundred-and-sixty-eighth_spare_parameter FALSE one-hundred-and-sixty-eighth spare parameter - boolean
_one-hundred-and-sixty-fifth_spare_parameter FALSE one-hundred-and-sixty-fifth spare parameter - boolean
_one-hundred-and-sixty-first_spare_parameter FALSE one-hundred-and-sixty-first spare parameter - boolean
_one-hundred-and-sixty-fourth_spare_parameter FALSE one-hundred-and-sixty-fourth spare parameter - boolean
_one-hundred-and-sixty-ninth_spare_parameter FALSE one-hundred-and-sixty-ninth spare parameter - boolean
_one-hundred-and-sixty-second_spare_parameter FALSE one-hundred-and-sixty-second spare parameter - boolean
_one-hundred-and-sixty-seventh_spare_parameter FALSE one-hundred-and-sixty-seventh spare parameter - boolean
_one-hundred-and-sixty-sixth_spare_parameter FALSE one-hundred-and-sixty-sixth spare parameter - boolean
_one-hundred-and-sixty-third_spare_parameter FALSE one-hundred-and-sixty-third spare parameter - boolean
_one-hundred-and-tenth_spare_parameter one-hundred-and-tenth spare parameter - string
_one-hundred-and-third_spare_parameter one-hundred-and-third spare parameter - string
_one-hundred-and-thirteenth_spare_parameter one-hundred-and-thirteenth spare parameter - string
_one-hundred-and-thirtieth_spare_parameter one-hundred-and-thirtieth spare parameter - string
_one-hundred-and-thirty-eighth_spare_parameter one-hundred-and-thirty-eighth spare parameter - string list
_one-hundred-and-thirty-fifth_spare_parameter one-hundred-and-thirty-fifth spare parameter - string list
_one-hundred-and-thirty-first_spare_parameter one-hundred-and-thirty-first spare parameter - string list
_one-hundred-and-thirty-fourth_spare_parameter one-hundred-and-thirty-fourth spare parameter - string list
_one-hundred-and-thirty-ninth_spare_parameter one-hundred-and-thirty-ninth spare parameter - string list
_one-hundred-and-thirty-second_spare_parameter one-hundred-and-thirty-second spare parameter - string list
_one-hundred-and-thirty-seventh_spare_parameter one-hundred-and-thirty-seventh spare parameter - string list
_one-hundred-and-thirty-sixth_spare_parameter one-hundred-and-thirty-sixth spare parameter - string list
_one-hundred-and-thirty-third_spare_parameter one-hundred-and-thirty-third spare parameter - string list
_one-hundred-and-twelfth_spare_parameter one-hundred-and-twelfth spare parameter - string
_one-hundred-and-twentieth_spare_parameter one-hundred-and-twentieth spare parameter - string
_one-hundred-and-twenty-eighth_spare_parameter one-hundred-and-twenty-eighth spare parameter - string
_one-hundred-and-twenty-fifth_spare_parameter one-hundred-and-twenty-fifth spare parameter - string
_one-hundred-and-twenty-first_spare_parameter one-hundred-and-twenty-first spare parameter - string
_one-hundred-and-twenty-fourth_spare_parameter one-hundred-and-twenty-fourth spare parameter - string
_one-hundred-and-twenty-ninth_spare_parameter one-hundred-and-twenty-ninth spare parameter - string
_one-hundred-and-twenty-second_spare_parameter one-hundred-and-twenty-second spare parameter - string
_one-hundred-and-twenty-seventh_spare_parameter one-hundred-and-twenty-seventh spare parameter - string
_one-hundred-and-twenty-sixth_spare_parameter one-hundred-and-twenty-sixth spare parameter - string
_one-hundred-and-twenty-third_spare_parameter one-hundred-and-twenty-third spare parameter - string
_one-hundredth_spare_parameter one-hundredth spare parameter - string
_oneside_colstat_for_equijoins TRUE sanity check on default selectivity for like/range predicate
_onl_ddl_progress 3 track progress of online ddl
_onl_pmo_wait_query 0 online pmos wait for queries after swapping partitions
_onl_pmo_wait_timeout 0 online pmos wait for queries after swapping partitions timeout
_online_ctas_diag 0 controls dumping diagnostic information for online ctas
_online_ddl_delay 200 centisecond delay for online DDL to allow cursor recompliation
_online_ddl_domain_index_flags 1 flags for domain indexes during online DDLs
_online_ddl_nowait_delay 25 centisecond delay for nowait lock try during online DDL
_online_direct_load 2 Online Direct Load
_online_file_conversion_aiolimit 8 Online datafile move/conversion async I/O limit
_online_file_conversion_batchsize 64 Online datafile move/conversion sync batchsize
_online_patch_disable_stack_check FALSE disable check for function on stack for online patches
_online_pmo_global_index_flags 0 flags for global indexes during partition maintenance DDLs
_online_pmo_global_index_method CLEANUP ONLY Unique global index method for partition maintenance DDLs
_ops_per_semop the exact number of operations per semop system call
_optim_adjust_for_part_skews TRUE adjust stats for skews across partitions
_optim_dict_stats_at_db_cr_upg TRUE enable/disable dictionary stats gathering at db create/upgrade
_optim_enhance_nnull_detection TRUE TRUE to enable index [fast] full scan more often
_optim_new_default_join_sel TRUE improves the way default equijoin selectivity are computed
_optim_peek_user_binds TRUE enable peeking of user binds
_optimize_dvconfig_cloudpdb FALSE Optimize Database Vault setup for cloud PDB
_optimize_tbsquota_ddl TRUE Optimize tablespace quota for user DDL
_optimized_pdb_open_in_cloud FALSE Optimize PDB Open codepath
_optimizefsio Test env file i/o setting
_optimizer_adaptive_cursor_sharing TRUE optimizer adaptive cursor sharing
_optimizer_adaptive_plan_control 0 internal controls for adaptive plans
_optimizer_adaptive_plans_continuous FALSE enable continuously adaptive plans
_optimizer_adaptive_plans_iterative FALSE enable iterative adaptive plans
_optimizer_adaptive_random_seed 0 random seed for adaptive plans
_optimizer_adjust_for_nulls TRUE adjust selectivity for null values
_optimizer_ads_for_pq FALSE use ADS for parallel queries
_optimizer_ads_max_table_count 0 maximum number of tables in a join under ADS
_optimizer_ads_result_cache_life 3600 result cache shelf life for ADS queries
_optimizer_ads_spd_cache_owner_limit 64 Maximum number of directives under an owner in SPD cache
_optimizer_ads_time_limit 0 maximum time limit (seconds) under ADS
_optimizer_ads_use_partial_results TRUE Use partial results of ADS queries
_optimizer_ads_use_result_cache TRUE use result cache for ADS queries
_optimizer_ads_use_spd_cache TRUE use Sql Plan Directives for caching ADS queries
_optimizer_aggr_groupby_elim TRUE group-by and aggregation elimination
_optimizer_allow_all_access_paths TRUE allow all access paths
_optimizer_ansi_join_lateral_enhance TRUE optimization of left/full ansi-joins and lateral views
_optimizer_ansi_rearchitecture TRUE re-architecture of ANSI left, right, and full outer joins
_optimizer_answering_query_using_stats FALSE enable statistics-based query transformation
_optimizer_autostats_job TRUE enable/disable auto stats collection job
_optimizer_aw_join_push_enabled TRUE Enables AW Join Push optimization
_optimizer_aw_stats_enabled TRUE Enables statistcs on AW olap_table table function
_optimizer_band_join_aware TRUE enable the detection of band join by the optimizer
_optimizer_batch_table_access_by_rowid TRUE enable table access by ROWID IO batching
_optimizer_better_inlist_costing ALL enable improved costing of index access using in-list(s)
_optimizer_block_size 8192 standard block size used by optimizer
_optimizer_bushy_cost_factor 100 cost factor for bushy join
_optimizer_bushy_fact_dim_ratio 20 bushy join dimension to fact ratio
_optimizer_bushy_fact_min_size 100000 minimumm fact size for bushy join
_optimizer_bushy_join off enables bushy join
_optimizer_cache_stats FALSE cost with cache statistics
_optimizer_cartesian_enabled TRUE optimizer cartesian join enabled
_optimizer_cbqt_factor 50 cost factor for cost-based query transformation
_optimizer_cbqt_no_size_restriction TRUE disable cost based transformation query size restriction
_optimizer_cbqt_or_expansion ON enables cost based OR expansion
_optimizer_ceil_cost TRUE CEIL cost in CBO
_optimizer_cluster_by_rowid TRUE enable/disable the cluster by rowid feature
_optimizer_cluster_by_rowid_batch_size 100 Sorting batch size for cluster by rowid feature
_optimizer_cluster_by_rowid_batched TRUE enable/disable the cluster by rowid batching feature
_optimizer_cluster_by_rowid_control 129 internal control for cluster by rowid feature mode
_optimizer_coalesce_subqueries TRUE consider coalescing of subqueries optimization
_optimizer_compare_plans_control 0 compare plans controls for testing
_optimizer_complex_pred_selectivity TRUE enable selectivity estimation for builtin functions
_optimizer_compute_index_stats TRUE force index stats collection on index creation/rebuild
_optimizer_connect_by_cb_whr_only FALSE use cost-based transformation for whr clause in connect by
_optimizer_connect_by_combine_sw TRUE combine no filtering connect by and start with
_optimizer_connect_by_cost_based TRUE use cost-based transformation for connect by
_optimizer_connect_by_elim_dups TRUE allow connect by to eliminate duplicates from input
_optimizer_control_shard_qry_processing 65280 control shard query processing
_optimizer_correct_sq_selectivity TRUE force correct computation of subquery selectivity
_optimizer_cost_based_transformation LINEAR enables cost-based query transformation
_optimizer_cost_filter_pred FALSE enables costing of filter predicates in IO cost model
_optimizer_cost_hjsmj_multimatch TRUE add cost of generating result set when #rows per key > 1
_optimizer_cost_model CHOOSE optimizer cost model
_optimizer_cube_join_enabled TRUE enable cube join
_optimizer_db_blocks_buffers 0 optimizer value for _db_blocks_buffers
_optimizer_degree 0 force the optimizer to use the same degree of parallelism
_optimizer_diag_stats TRUE enable/disable populating stats diagnosis tables
_optimizer_dim_subq_join_sel TRUE use join selectivity in choosing star transformation dimensions
_optimizer_disable_strans_sanity_checks 0 disable star transformation sanity checks
_optimizer_distinct_agg_transform TRUE Transforms Distinct Aggregates to non-distinct aggregates
_optimizer_distinct_elimination TRUE Eliminates redundant SELECT DISTNCT's
_optimizer_distinct_placement TRUE consider distinct placement optimization
_optimizer_dsdir_usage_control 0 controls optimizer usage of dynamic sampling directives
_optimizer_dyn_smp_blks 32 number of blocks for optimizer dynamic sampling
_optimizer_eliminate_filtering_join TRUE optimizer filtering join elimination enabled
_optimizer_eliminate_subquery TRUE consider elimination of subquery optimization
_optimizer_enable_density_improvements TRUE use improved density computation for selectivity estimation
_optimizer_enable_extended_stats TRUE use extended statistics for selectivity estimation
_optimizer_enable_plsql_stats TRUE Use statistics of plsql functions
_optimizer_enable_table_lookup_by_nl TRUE consider table lookup by nl transformation
_optimizer_enhanced_filter_push TRUE push filters before trying cost-based query transformation
_optimizer_enhanced_join_elimination TRUE Enhanced(12.2) join elimination
_optimizer_exists_to_any_rewrite TRUE consider exists-to-any rewrite of subqueries
_optimizer_extend_jppd_view_types TRUE join pred pushdown on group-by, distinct, semi-/anti-joined view
_optimizer_extended_cursor_sharing UDO optimizer extended cursor sharing
_optimizer_extended_cursor_sharing_rel SIMPLE optimizer extended cursor sharing for relational operators
_optimizer_extended_stats_usage_control 192 controls the optimizer usage of extended stats
_optimizer_external_table_cache TRUE perform external table cache transform
_optimizer_false_filter_pred_pullup TRUE optimizer false predicate pull up transformation
_optimizer_fast_access_pred_analysis TRUE use fast algorithm to traverse predicates for physical optimizer
_optimizer_fast_pred_transitivity TRUE use fast algorithm to generate transitive predicates
_optimizer_feedback_control controls the optimizer feedback framework
_optimizer_filter_pred_pullup TRUE use cost-based flter predicate pull up transformation
_optimizer_filter_pushdown TRUE enable/disable filter predicate pushdown
_optimizer_fkr_index_cost_bias 10 Optimizer index bias over FTS/IFFS under first K rows mode
_optimizer_force_CBQT force CBQT transformation regardless of cost
_optimizer_force_error_CBQT force assert within a CBQT transformation
_optimizer_force_error_hash force assert if hash of the error message equal to the parameter
_optimizer_force_error_state force assert in init phase, final phase or a candidate state
_optimizer_free_transformation_heap TRUE free transformation subheap after each transformation
_optimizer_full_outer_join_to_outer TRUE enable/disable full outer to left outer join conversion
_optimizer_gather_feedback TRUE optimizer gather feedback
_optimizer_gather_stats_on_conventional_config 0 settings for optimizer online stats gathering on conventional DML
_optimizer_gather_stats_on_conventional_dml FALSE optimizer online stats gathering for conventional DML
_optimizer_gather_stats_on_load TRUE enable/disable online statistics gathering
_optimizer_gather_stats_on_load_all FALSE enable/disable online statistics gathering for nonempty segments
_optimizer_gather_stats_on_load_hist FALSE enable/disable online histogram gathering for loads
_optimizer_gather_stats_on_load_index TRUE enable/disable online index stats gathering for loads
_optimizer_generate_ptf_implied_preds TRUE Generate implied predicates for PTF
_optimizer_generate_transitive_pred TRUE optimizer generate transitive predicates
_optimizer_group_by_placement TRUE consider group-by placement optimization
_optimizer_hll_entry 4096 number of entries in hll hash table
_optimizer_hybrid_fpwj_enabled TRUE enable hybrid full partition-wise join when TRUE
_optimizer_improve_selectivity TRUE improve table and partial overlap join selectivity computation
_optimizer_inmemory_access_path TRUE optimizer access path costing for in-memory
_optimizer_inmemory_autodop TRUE optimizer autoDOP costing for in-memory
_optimizer_inmemory_bloom_filter TRUE controls serial bloom filter for in-memory tables
_optimizer_inmemory_capture_stored_stats TRUE optimizer capture and store statistics for in-memory tables
_optimizer_inmemory_cluster_aware_dop TRUE Affinitize DOP for inmemory objects
_optimizer_inmemory_gen_pushable_preds TRUE optimizer generate pushable predicates for in-memory
_optimizer_inmemory_minmax_pruning TRUE controls use of min/max pruning for costing in-memory tables
_optimizer_inmemory_pruning_ratio_rows 100 in-memory pruning ratio for # rows (% of rows remaining after pruning)
_optimizer_inmemory_quotient 0 in-memory quotient (% of rows in in-memory format)
_optimizer_inmemory_table_expansion TRUE optimizer in-memory awareness for table expansion
_optimizer_inmemory_use_stored_stats AUTO optimizer use stored statistics for in-memory tables
_optimizer_instance_count 0 force the optimizer to use the specified number of instances
_optimizer_interleave_jppd TRUE interleave join predicate pushdown during CBQT
_optimizer_interleave_or_expansion TRUE interleave OR Expansion during CBQT
_optimizer_invalidation_period 18000 time window for invalidation of cursors of analyzed objects
_optimizer_ivf_iteration FALSE return all K rows using IVF multiple iteration
_optimizer_ivf_postfilter_rows 0 number of rows for IVF post-filter
_optimizer_join_elimination_enabled TRUE optimizer join elimination enabled
_optimizer_join_factorization TRUE use join factorization transformation
_optimizer_join_order_control 3 controls the optimizer join order search algorithm
_optimizer_join_sel_sanity_check TRUE enable/disable sanity check for multi-column join selectivity
_optimizer_key_vector_aggr_factor 75 the required aggregation between IJK and DGK
_optimizer_key_vector_payload TRUE enables or disables dimension payloads in vector transform
_optimizer_key_vector_payload_dim_aggs TRUE enables or disables dimension payloading of aggregates in VT
_optimizer_key_vector_pruning_enabled TRUE enables or disables key vector partition pruning
_optimizer_key_vector_use_max_size 1048576 maximum key vector use size (in KB)
_optimizer_max_permutations 300 optimizer maximum join permutations per query block
_optimizer_min_cache_blocks 10 set minimum cached blocks
_optimizer_mjc_enabled TRUE enable merge join cartesian
_optimizer_mode_force TRUE force setting of optimizer mode for user recursive SQL also
_optimizer_multi_level_push_pred TRUE consider join-predicate pushdown that requires multi-level pushdown to
_optimizer_multi_table_outerjoin TRUE allows multiple tables on the left of outerjoin
_optimizer_multicol_join_elimination TRUE eliminate multi-column key based joins
_optimizer_multiple_cenv generate and run plans using several compilation environments
_optimizer_multiple_cenv_report result control what to report in trace file when run in multi-plan mode
_optimizer_multiple_cenv_stmt query control the types of statements that are run in multi-plan mode
_optimizer_native_full_outer_join FORCE execute full outer join using native implementaion
_optimizer_nested_loop_join on favor/unfavor nested loop join
_optimizer_nested_rollup_for_gset 100 number of groups above which we use nested rollup exec for gset
_optimizer_new_join_card_computation TRUE compute join cardinality using non-rounded input values
_optimizer_nlj_hj_adaptive_join TRUE allow adaptive NL Hash joins
_optimizer_non_blocking_hard_parse TRUE enable non-blocking hard parse
_optimizer_null_accepting_semijoin TRUE enables null-accepting semijoin
_optimizer_null_aware_antijoin TRUE null-aware antijoin parameter
_optimizer_or_expansion DEPTH control or expansion approach used
_optimizer_or_expansion_subheap TRUE Use subheap for optimizer or-expansion
_optimizer_order_by_elimination_enabled TRUE Eliminates order bys from views before query transformation
_optimizer_outer_join_to_inner TRUE enable/disable outer to inner join conversion
_optimizer_outer_to_anti_enabled TRUE Enable transformation of outer-join to anti-join if possible
_optimizer_partial_join_eval TRUE partial join evaluation parameter
_optimizer_percent_parallel 101 optimizer percent parallel
_optimizer_performance_feedback OFF controls the performance feedback
_optimizer_proc_rate_level BASIC control the level of processing rates
_optimizer_proc_rate_source DEFAULT control the source of processing rates
_optimizer_purge_stats_iteration_row_count 10000 number of rows to be deleted at each iteration of the stats
_optimizer_push_down_distinct 0 push down distinct from query block to table
_optimizer_push_gby_into_union_all TRUE consider pushing down group-by into union-all branches
_optimizer_push_pred_cost_based TRUE use cost-based query transformation for push pred optimization
_optimizer_random_plan 0 optimizer seed value for random plans
_optimizer_reduce_groupby_key TRUE group-by key reduction
_optimizer_reuse_cost_annotations TRUE reuse cost annotations during cost-based query transformation
_optimizer_rownum_bind_default 10 Default value to use for rownum bind
_optimizer_rownum_pred_based_fkr TRUE enable the use of first K rows due to rownum predicate
_optimizer_save_stats TRUE enable/disable saving old versions of optimizer stats
_optimizer_search_limit 5 optimizer search limit
_optimizer_secure_view_merging TRUE optimizer secure view merging and predicate pushdown/movearound
_optimizer_self_induced_cache_cost FALSE account for self-induced caching
_optimizer_skip_scan_enabled TRUE enable/disable index skip scan
_optimizer_skip_scan_guess FALSE consider index skip scan for predicates with guessed selectivity
_optimizer_sortmerge_join_enabled TRUE enable/disable sort-merge join method
_optimizer_sortmerge_join_inequality TRUE enable/disable sort-merge join using inequality predicates
_optimizer_squ_bottomup TRUE enables unnesting of subquery in a bottom-up manner
_optimizer_star_tran_in_with_clause TRUE enable/disable star transformation in with clause queries
_optimizer_star_trans_min_cost 0 optimizer star transformation minimum cost
_optimizer_star_trans_min_ratio 0 optimizer star transformation minimum ratio
_optimizer_starplan_enabled TRUE optimizer star plan enabled
_optimizer_stats_coll_max_buffer_size 8 max buffer size of statistics collector rowsource
_optimizer_stats_on_conventional_dml_sample_rate 100 sampling rate for online stats gathering on conventional DML
_optimizer_strans_adaptive_pruning TRUE allow adaptive pruning of star transformation bitmap trees
_optimizer_subsume_vw_sq ON consider subsumption of views or subqueries
_optimizer_synopsis_min_size 2 minimal synopsis size (kb)
_optimizer_system_stats_usage TRUE system statistics usage
_optimizer_table_expansion TRUE consider table expansion transformation
_optimizer_trace none optimizer trace parameter
_optimizer_track_hint_usage TRUE enable tracking of optimizer hint usage
_optimizer_transitivity_retain TRUE retain equi-join pred upon transitive equality pred generation
_optimizer_try_st_before_jppd TRUE try Star Transformation before Join Predicate Push Down
_optimizer_undo_changes FALSE undo changes to query optimizer
_optimizer_undo_cost_change 23.1.0 optimizer undo cost change
_optimizer_union_all_gsets TRUE Use Union All Optimization for Grouping Sets
_optimizer_unnest_all_subqueries TRUE enables unnesting of every type of subquery
_optimizer_unnest_corr_set_subq TRUE Unnesting of correlated set subqueries (TRUE/FALSE)
_optimizer_unnest_disjunctive_subq TRUE Unnesting of disjunctive subqueries (TRUE/FALSE)
_optimizer_unnest_scalar_sq TRUE enables unnesting of of scalar subquery
_optimizer_unnest_update_set_subq on enables unnesting of subquery in set for update
_optimizer_use_auto_indexes AUTO Use Auto Index
_optimizer_use_cbqt_star_transformation TRUE use rewritten star transformation using cbqt framework
_optimizer_use_feedback TRUE optimizer use feedback
_optimizer_use_feedback_for_join FALSE optimizer use feedback for join
_optimizer_use_gtt_session_stats TRUE use GTT session private statistics
_optimizer_use_histograms TRUE enable/disable the usage of histograms by the optimizer
_optimizer_use_stats_models FALSE use optimizer statistics extrapolation models
_optimizer_use_stats_on_conventional_config 0 settings for optimizer usage of online stats on conventional DML
_optimizer_use_stats_on_conventional_dml FALSE use optimizer statistics gathered for conventional DML
_optimizer_use_subheap TRUE Enables physical optimizer subheap
_optimizer_use_table_scanrate HADOOP_ONLY Use Table Specific Scan Rate
_optimizer_use_xt_rowid TRUE Use external table rowid
_optimizer_vector_base_dim_fact_factor 200 cost based vector transform base dimension to base fact ratio
_optimizer_vector_cost_adj 100 cost adjustment for vector aggregation processing estimates
_optimizer_vector_fact_dim_ratio 10 cost based vector transform dimension to fact ratio
_optimizer_vector_fact_payload_ratio 20 cost based vector transform payload dimension to fact ratio
_optimizer_vector_index ON consider transformation for vector index (HNSW and IVF
_optimizer_vector_index_covering_columns TRUE use covering columns during vector index transformation
_optimizer_vector_min_fact_rows 10000000 min number of rows required for vector aggregation transform
_optimizer_vector_transformation TRUE perform vector transform
_optimizer_wc_filter_pushdown TRUE enable/disable with clause filter predicate pushdown
_or_expand_nvl_predicate TRUE enable OR expanded plan for NVL/DECODE predicate
_oracle_employee_testing FALSE Switch on all features for the purpose of testing
_oracle_script FALSE Running an Oracle-supplied script
_oracle_script_counter 0 Helper parameter to set the value of _oracle_script counter
_oracle_special_license_1_granted FALSE Oracle internal parameter
_oradbg_pathname path of oradbg script
_oradebug_cmds_at_startup oradebug commands to execute at instance startup
_oradebug_force FALSE force target processes to execute oradebug commands?
_ordered_nested_loop TRUE enable ordered nested loop costing
_ordered_semijoin TRUE enable ordered semi-join subquery
_orph_cln_interval 1200 qmon periodic interval for removed subscriber messages cleanup
_os_nice_high 10 OS high nice level
_os_nice_highest 0 OS highest nice level
_os_nice_low 30 OS low nice level
_os_nice_lowest 39 OS lowest nice level
_os_nice_normal 20 OS normal nice level
_os_sched_high_priority 1 OS high priority level
_os_sched_highest_priority 1 OS highest priority level
_os_sched_low_priority 1 OS low priority level
_os_sched_lowest_priority 1 OS lowest priority level
_os_sched_normal_priority 1 OS normal priority level
_os_sched_use_nice TRUE With this set to TRUE, the scheduling policy will be SCHED_OTHER as a
_oscpurm_bg_shr_scale_factor 4 OSCPURM background share scale factor
_oss_skgxp_udp_dynamic_credit_mgmt OSSLIB set dynamic credit for SKGXP-UDP
_other_wait_event_exclusion exclude event names from _other_wait_threshold calculations
_other_wait_threshold 0 threshold wait percentage for event wait class Other
_outline_bitmap_tree TRUE BITMAP_TREE hint enabled in outline
_override_datafile_encrypt_check FALSE if TRUE, override datafile tablespace encryption cross check
_parallel_adaptive_max_users 4 maximum number of users running with default DOP
_parallel_blackbox_enabled TRUE parallel execution blackbox enabled
_parallel_blackbox_sga TRUE true if blackbox will be allocated in SGA, false if PGA
_parallel_blackbox_size 16384 parallel execution blackbox bucket size
_parallel_broadcast_enabled TRUE enable broadcasting of small inputs to hash and sort merge joins
_parallel_cluster_cache_pct 80 max percentage of the global buffer cache to use for affinity
_parallel_cluster_cache_policy ADAPTIVE policy used for parallel execution on cluster(ADAPTIVE/CACHED)
_parallel_conservative_queuing FALSE conservative parallel statement queuing
_parallel_ctas_enabled TRUE enable/disable parallel CTAS operation
_parallel_default_max_instances 1 default maximum number of instances for parallel query
_parallel_execution_message_align FALSE Alignment of PX buffers to OS page boundary
_parallel_fake_class_pct 0 fake db-scheduler percent used for testing
_parallel_fault_tolerance_enabled FALSE enables or disables fault-tolerance for parallel statement
_parallel_fault_tolerance_threshold 3 total number of faults fault-tolerance will handle
_parallel_fixwrite_bucket 1000 Number of buckets for each round of fix write
_parallel_frz_step_reconfig 0 parallel rs work for freeze step for instance reconfig.
_parallel_heartbeat_snapshot_interval 2 interval of snapshot to track px msging between instances
_parallel_heartbeat_snapshot_max 128 maximum number of historical snapshots archived
_parallel_inmemory_min_time_threshold AUTO threshold above which a plan is a candidate for parallelization for in
_parallel_inmemory_time_unit 1 unit of work used to derive the degree of parallelism for in-memory ta
_parallel_lmd_reconfig 1 parallel lmd work in reconfiguration for enqueues.
_parallel_load_bal_unit 0 number of threads to allocate per instance
_parallel_load_balancing TRUE parallel execution load balanced slave allocation
_parallel_load_publish_threshold 10 diffrence in percentage controlling px load propagation
_parallel_log_write_cleanup TRUE Perform (null) log write cleanup in parallel
_parallel_min_message_pool 491520 minimum size of shared pool memory to reserve for pq servers
_parallel_optimization_phase_for_local FALSE parallel optimization phase when all slaves are local
_parallel_queuing_max_waitingtime parallel statement queuing: max waiting time in queue
_parallel_recovery_stopat 32767 stop at -position- to step through SMON
_parallel_replay_msg_limit 4000 Number of messages for each round of parallel replay
_parallel_scalability 50 Parallel scalability criterion for parallel execution
_parallel_server_idle_time 30000 idle time before parallel query server dies (in 1/100 sec)
_parallel_server_memory_threshold 0 max memory threshold for idle PX server to exit
_parallel_server_resiliency 0 enable resilient execution of parallel query
_parallel_server_sleep_time 1 sleep time between dequeue timeouts (in 1/100ths)
_parallel_slave_acquisition_wait 1 time(in seconds) to wait before retrying slave acquisition
_parallel_statement_queuing FALSE parallel statement queuing enabled
_parallel_syspls_obey_force TRUE TRUE to obey force parallel query/dml/ddl under System PL/SQL
_parallel_time_unit 10 unit of work used to derive the degree of parallelism (in seconds)
_parallel_txn_global FALSE enable parallel_txn hint with updates and deletes
_parallelism_cost_fudge_factor 350 set the parallelism cost fudge factor
_parameter_spfile_sync FALSE SPFILE sync mode
_parameter_table_block_size 2048 parameter table block size
_parquet_max_int_file_size 33554432 Max size of intermediate file in a single write
_parquet_tot_int_file_size 536870912 Total size of intermediate file for export data parquet
_part_layer_performance_trace 0 diagnostic improvements for performence issues
_part_redef_global_index_update TRUE online partition redefinition update global indexes
_partial_comp_enabled TRUE partial table compression enabled
_partial_log_preserve_space TRUE use only required space for partial archive logs
_partial_pwise_join_enabled TRUE enable partial partition-wise join when TRUE
_partition_advisor_srs_active true enables sampling based partitioning validation
_partition_by_con_name FALSE enable partitioning by con$name
_partition_by_expression TRUE allow partition by expression
_partition_cdb_view_enabled TRUE partitioned cdb view evaluation enabled
_partition_key_errmsg_limit 128 limit on the partition key string included in error messages
_partition_key_errtrc_limit 16384 limit on the partition key string written to trace file
_partition_large_extents TRUE Enables large extent allocation for partitioned tables
_partition_read_only TRUE bypass all read only check for partition
_partition_view_enabled TRUE enable/disable partitioned views
_partn_blackbox_size 16384 partitioning blackbox bucket size
_passwordfile_enqueue_timeout 900 password file enqueue timeout in seconds
_path_prefix_create_dir TRUE Create path in file system for CREATE DIRECTORY with PATH_PREFIX
_path_prefix_override_dir Override directory for PATH_PREFIX in PDB
_pbkdf2_sder_count 3 The PBKDF2 count to use for session key derivation
_pct_refresh_double_count_prevented TRUE materialized view PCT refreshes avoid double counting
_pdb_auto_save_state FALSE Save pdb state automatically on state change on a given instance
_pdb_auto_undots_create_off FALSE disable automatic creation of undo tablespace in local undo mode
_pdb_char_set_intconv FALSE Enforce internal_convert for PDB character set conversion
_pdb_clone_preserve_guid FALSE Use same guid for a pdb clone
_pdb_close_force_kill_session 1 Force kill sessions during PDB close
_pdb_close_immediate_kill_batchsize 1000 batch size for killing sessions inside the PDB
_pdb_cluster_database TRUE This parameter can be turned-off when cluster_database is TRUE
_pdb_component_violation_restricted Components allowed to have mismatch between CDB$Root and PDB
_pdb_create_use_sysoper_conn FALSE spread file copy slaves across instances
_pdb_datapatch_violation_restricted TRUE Open pdb in restricted mode for datapatch error violation
_pdb_exclude_tablespace_for_metaclone Internally exclude tablespaces for metadata refresh clones
_pdb_failure_testing 0 Testing failure in pluggable database related operations
_pdb_file_copy_affinitize FALSE spread file copy slaves across instances
_pdb_file_copy_buffers 8 number of buffers to use for pdb file copy
_pdb_first_script FALSE Running a script that is PDB-first/ROOT-last
_pdb_force_cfd FALSE Force DB_CREATE_FILE_DEST path for all datafiles in PDB
_pdb_hash_table_latches 16 number of PDB hash table latches
_pdb_hash_table_size 255 number of buckets in PDB hash table
_pdb_hybrid_read_only FALSE Hybrid read only mode allows CDB common user to patch the PDB
_pdb_ignore_table_clauses TRUE Ignore subset of clauses in CREATE TABLE and ALTER TABLE
_pdb_inherit_cfd FALSE Automatically enable CREATE_FILE_DEST clause in the PDB
_pdb_isolation_class NONE PDB isolation level: NONE, HIGH or MAX
_pdb_ktg_buffer_size 16 KTG buffer size (in KB) to store inmemory traces
_pdb_ldp_cascade 0 pluggable database lockdown profile cascade param
_pdb_lifespan_callout PL SQL Procedure to import lifespan
_pdb_live_replay_bind_table cloud table name to record bind info
_pdb_live_replay_error_table table name to record error info
_pdb_live_replay_sess_table cloud table name to record session info
_pdb_live_replay_stmt_table cloud table name to record statement info
_pdb_live_replay_temp_table table name to record temp info
_pdb_local_undo_tablespace_init_size 100000000 Initial size for undo tablespace
_pdb_lockdown_bypass_sr 0 special run lockdown parameter
_pdb_lockdown_ddl_clauses 0 pluggable database lockdown clauses for statements
_pdb_lockdown_error_message FALSE Enable pdb lockdown specific error message
_pdb_lrg_auto_undots_create FALSE enable automatic creation of undo tablespace in local undo mode
_pdb_mask_cdb_info FALSE Enable masking CDB information within a PDB
_pdb_max_audit_size 0 Default value for MAX_AUDIT_SIZE property in new PDB creation
_pdb_max_diag_size 0 Default value for MAX_DIAG_SIZE property in new PDB creation
_pdb_max_size_discount 10 Discount percentable on PDB Max space usage
_pdb_media_rcv_parallelism 0 PDB media recovery parallelism
_pdb_name_case_sensitive FALSE Keeps PDB name case sensitive
_pdb_oper_trace_threshold 600 PDB operations timing trace threshold
_pdb_oper_trace_threshold_softassert FALSE PDB operations timing threshold soft assert
_pdb_read_only_refresh FALSE allow refresh when pdb is open r/o
_pdb_refresh_apply_master_key_rekey TRUE Apply master rekey marker during pdb refresh
_pdb_refresh_log_info_callout PL SQL Procedure to get log info
_pdb_refresh_quiesce_use_restricted_open FALSE open source in restricted mode during ref clone activation
_pdb_refresh_remote_logs_baseuri Location of archive logs to use for pdb refresh
_pdb_refresh_remote_logs_path Location of archive logs to use for pdb refresh
_pdb_refresh_remote_logs_trackdb Location of json trackdb for scn->seq# mapping
_pdb_refresh_restrict_until_point FALSE restrict until scn/time for pdb refresh
_pdb_refresh_scn_to_seq_exttbl external table name to use convert scn to thread#,seq#
_pdb_refresh_temp_files_autoextend_size 104857600 refreshable clones temp files autoextend size
_pdb_refresh_use_dblink_to_catalog FALSE Use central catalog for pdb refresh
_pdb_refresh_use_local_logs TRUE Use local logs for pdb refresh
_pdb_relocate_read_only_open TRUE Open PDB is read only mode during a PDB Relocate
_pdb_replay_param_allowlist pdb replay parameter allow list
_pdb_replay_param_blocklist pdb replay parameter block list
_pdb_replay_param_mode DISABLED pdb replay parameter mode
_pdb_seed_mcsc FALSE Allow PDB SEED to have different character set than the CDB.
_pdb_service_name_convert service name convert patterns and strings for per PDB clone
_pdb_service_on_root_listener FALSE pdb services on CDB ROOT listeners
_pdb_skiplist_apply_callout PL SQL Procedure name to import skiplist
_pdb_skiplist_redogen_callout PL SQL Procedure name to export skiplist
_pdb_skiplist_rfsgen_callout PL SQL Procedure name to export skiplist in rfs setup
_pdb_small_table_threshold 20 lower threshold level of table size for direct reads in a pdb
_pdb_strict_plugin_compat FALSE Pluggable database strict plugin compatibility
_pdb_transition_clean_bg_delay 0 delay in GEN0 to transition PDB to clean state
_pdb_trigger_user user to execute pdb trigger
_pdb_use_sequence_cache TRUE Use sequence cache in PDB mode
_pdb_vm_max_size PDB SGA maximum virtual memory size
_pdbopen_fixedtablestats FALSE gather fixed table stats at PDB open
_pdc_adaptive FALSE pmem direct commit adaptively determine percent of ORL-only txns
_pdc_adaptive_evaluation_delta 10 pmem direct commit adaptive txn eval. delta
_pdc_adaptive_evaluation_duration 10 pmem direct commit adaptive adaptive eval. duration (percent)
_pdc_adaptive_evaluation_interval 60 pmem direct commit adaptive adaptive eval. interval (in seconds)
_pdc_adaptive_evaluation_margin 5 pmem direct commit adaptive txn evaluation margin
_pdc_adaptive_evaluation_successes 2 pmem direct commit adaptive txn eval. successes
_pdc_concurrency 16 pmem direct commit concurrency
_pdc_file_clear FALSE clear pmem direct commit file when redo thread is opened
_pdc_imu_pct 0 percentage of IMU ORL-only transactions
_pdc_imud_flush TRUE flush an imu txn's downgrade redo immediately
_pdc_inst_bocs 1 number of per-instance persistent memory log buffer bocs
_pdc_max_mirrors 2 max number of pmem direct commit mirrors
_pdc_min_mirrors 2 min number of pmem direct commit file mirrors
_pdc_msrdma TRUE enable pmem direct commit msrdma
_pdc_non_imu_pct 0 percentage of non-IMU ORL-only transactions
_pdc_plb_stealing TRUE enable pmem direct commit plb stealing
_pdc_ptn_unit_size 65536 pmem direct commit file ptn unit size
_pdc_read_full_ptn FALSE read entire pmem direct commit file ptn when resilvering
_pdc_reconfig_interval 30 How long RECO waits before strand file mirror reconfig check (min)
_pdc_remove_all_files 0 remove PMEM strand files during mount
_pdc_resilver TRUE enable resilvering of online log from pmem direct commit file
_pdc_resilver_single FALSE create a single strand lwn during resilvering from pmem
_pdc_simulation FALSE allow a simulated pmem direct commit file
_pdc_test_hook 0 pmem direct commit testing hook
_pdc_txn_time 5 max time in seconds before a txn logs redo only to the online log
_pdc_units_per_ptn 4 pmem direct commit file units per ptn
_pdc_use_partnership_map TRUE enable partnership map for mirror placement
_pdml_gim_sampling 5000 control separation of global index maintenance for PDML
_pdml_gim_staggered FALSE slaves start on different index when doing index maint
_pdml_slaves_diff_part TRUE slaves start on different partition when doing index maint
_percent_flashback_buf_partial_full 50 Percent of flashback buffer filled to be considered partial full
_pga_aggregate_xmem_limit 0 limit of aggregate PGA XMEM memory consumed by the instance
_pga_auto_snapshot_percentage 20 percent growth of PGA memory for additional snapshots
_pga_auto_snapshot_threshold 524288000 bytes of PGA memory in one process to trigger detail snapshot
_pga_in_sga_param1 pga in sga param1
_pga_in_sga_param2 pga in sga param2
_pga_in_sga_param3 pga in sga param4
_pga_in_sga_param4 pga in sga param4
_pga_in_sga_param5 pga in sga param4
_pga_incident_app_usage_perc 75 suppress PGA limit incidents if app use above this percent
_pga_large_extent_size 1048576 PGA large extent size
_pga_limit_check_wait_time 1000000 microseconds to wait for over limit confirmation
_pga_limit_dump_summary TRUE dump PGA summary when signalling ORA-4036
_pga_limit_interrupt_smaller FALSE whether to interrupt smaller eligible processes
_pga_limit_min_req_size 4194304 bytes of PGA usage below which process will not get ORA-4036
_pga_limit_per_process_minimum 3145728 pga_aggregate_limit per-process minimum
_pga_limit_physmem_perc 90 default percent of physical memory for pga_aggregate_limit and SGA
_pga_limit_simulated_physmem_size 0 bytes of physical memory to determine pga_aggregate_limit with
_pga_limit_target_perc 200 default percent of pga_aggregate_target for pga_aggregate_limit
_pga_limit_time_to_interrupt 2 seconds to wait until direct interrupt
_pga_limit_time_until_idle 15 seconds to wait before treating process as idle
_pga_limit_time_until_killed 30 seconds to wait before killing session over limit
_pga_limit_tracing 0 trace pga_aggregate_limit activity
_pga_limit_use_immediate_kill TRUE use immediate kill for sessions over limit
_pga_limit_watch_perc 50 percentage of limit to have processes watch
_pga_limit_watch_size 104857600 bytes of PGA usage at which process will begin watching limit
_pga_max_size 497848320 Maximum size of the PGA memory for one process
_pgactx_cap_stacks FALSE capture stacks for setting pgactx
_pin_time_statistics FALSE if TRUE collect statistics for how long a current pin is held
_pivot_implementation_method CHOOSE pivot implementation method
_pkt_enable FALSE enable progressive kill test
_pkt_pmon_interval 50 PMON process clean-up interval (cs)
_pkt_start FALSE start progressive kill test instrumention
_plan_outline_data TRUE explain plan outline data enabled
_plan_verify_absolute_margin 100000 Absolute performance criterion for evolving plan baselines
_plan_verify_improvement_margin 150 Performance improvement criterion for evolving plan baselines
_plcmnt_template_svc_name service placement template name
_plsql_anon_block_code_type INTERPRETED PL/SQL anonymous block code-type
_plsql_bypass_strict_semantics FALSE Bypass PL/SQL semantics to resolve 2-part name as schema.type after pa
_plsql_cache_enable TRUE PL/SQL Function Cache Enabled
_plsql_dump_buffer_events conditions upon which the PL/SQL circular buffer is dumped
_plsql_icd_arg_dump FALSE Dump arguments to ICD
_plsql_max_frame_count 0 PL/SQL maximum call nesting depth
_plsql_max_stack_size 0 PL/SQL maximum stack size
_plsql_minimum_cache_hit_percent 20 plsql minimum cache hit percentage required to keep caching active
_plsql_native_frame_threshold 4294967294 Allocate PL/SQL native frames on the heap if size exceeds this value
_plsql_nvl_optimize FALSE PL/SQL NVL optimize
_plsql_release_pin_within_call 0 release pin on called unit before top call completes
_plsql_share_instantiation TRUE PL/SQL share kgscc for same SQL executed at multiple locations
_pluggable_database_debug 0 Debug flag for pluggable database related operations
_pmem_exchange_cold_victim_threshold 0 worthy touch count threshold for a victim buffer to be exchanged into
_pmem_small_table_threshold 20 lower threshold of PMEM table size as percentage to PMEM cache for dir
_pmemfs_alloc_dataptrs 1 Set PMEMfs to preallocate inode tree
_pmemfs_enable_spacetracking FALSE Enable PMEMfs Space Accounting Checks
_pmemfs_shrink_level 0 Enable pmemstore shrink
_pmemfs_smallfile_threshold 1024 Block count threshold for metedata
_pmon_cleanup_max_dfs 100 max dfs elements during cleanup
_pmon_dead_blkrs_alive_chk_rate_secs 3 rate to check blockers are alive during cleanup (in seconds)
_pmon_dead_blkrs_max_blkrs 50 max blockers to check during cleanup
_pmon_dead_blkrs_max_cleanup_attempts 5 max attempts per blocker while checking dead blockers
_pmon_dead_blkrs_scan_rate_secs 3 rate to scan for dead blockers during cleanup (in seconds)
_pmon_enable_dead_blkrs TRUE look for dead blockers during PMON cleanup
_pmon_exitnfy_enabled FALSE PMON Exit notification enabled
_pmon_idle_scan_interval 60 PMON idle scan interval (in seconds)
_pmon_incr_slaves 3 PMON cleanup: slave increment
_pmon_load_constants 300,192,64,3,10,10,0 server load balancing constants (S,P,D,I,L,C,M)
,0
_pmon_max_consec_posts 5 PMON max consecutive posts in main loop
_pmon_max_slaves 10 Maximum number of PMON slaves
_pmon_min_slaves 1 Minimum number of PMON slaves
_pmon_mutex_cleanup 1 PMON cleanup: mutex option
_pmon_new_slave_secs 30 PMON cleanup: new slave (in seconds)
_pmon_slave_stop_secs 60 PMON cleanup: slave stop limit (in seconds)
_pmon_slaves_arr_size 160 Array size for PMON slaves
_pmon_trees_per_slave 10 PMON cleanup: trees per slave
_port_internal_gateway 0 port number of Net Listener on Internal Gateway host
_posix_spawn_enabled TRUE posix_spawn enabled
_post_multiple_shared_waiters TRUE Post multiple shared waiters of a latch
_post_run_job_evaluation FALSE Control if jobs should evaluate at end of execution
_post_wait_queues_num_per_class Post Wait Queues - Num Per Class
_pq_numa_working_set_affinity TRUE if TRUE, enable pq slave NUMA affinity
_pqq_debug_txn_act FALSE pq queuing transaction active
_pqq_enabled TRUE Enable Resource Manager based Parallel Statement Queuing
_pqq_pdb_load_publish_threshold 0 difference in percentage controlling PDB load publish
_pre_rewrite_push_pred TRUE push predicates into views before rewrite
_precompute_gid_values TRUE precompute gid values and copy them before returning a row
_pred_move_around TRUE enables predicate move-around
_pred_push_cdb_view_enabled TRUE predicate pushdown enabled for CDB views
_predicate_elimination_enabled TRUE allow predicate elimination if set to TRUE
_predicate_validity_execution FALSE enable execution-time check for predicate validation
_prefer_local_temp FALSE Use Local Temp as preferred default tablespace
_prefered_standby standby db_unique_name prefered for krb operations
_preformat_tempfile_bmbs TRUE Enable preformatting enough bmbs for tempfile
_preplugin_backup enabled enable/disable pre-plugin backup feature
_prescomm FALSE presume commit of IMU transactions
_preshut_action_max_time 5 Maximum Time allowed for Preshut Actions
_prespawn_batch_count 20 prespawn batch count
_prespawn_bg_init_count 0 prespawn background init count
_prespawn_enabled FALSE Is prespawn enabled
_prespawn_fg_init_count 0 prespawn foreground init count
_prespawn_level prespawn level
_prespawn_max_count 50 prespawn max count
_prespawn_min_count 10 prespawn minimum count
_primary_guard_wait_timeout 120 Number of secords for guard wait timeout on primary
_print_inmem_heatmap 0 print inmem ilm heatmap
_print_inmem_srmap 0 print inmem spacereuse map
_print_refresh_schedule false enable dbms_output of materialized view refresh schedule
_print_stat_segment 0 print ilm statistics segment
_priv_for_set_current_schema FALSE ALTER SESSION privilege required for SET CURRENT_SCHEMA
_private_endpoint_sharee FALSE Register the PDB as Reverse Connection Endpoint (RCE) Sharee
_private_endpoint_sharing_mode Sharing Mode for Reverse Connection Endpoint (RCE) Sharees
_private_memory_address Start address of large extent memory segment
_proc_grp_enabled 3 proc-group enabled
_proc_grp_numa_map proc-group map string
_process_allocation_slots 100 process allocation slots
_process_heartbeat_range 3 Process heartbeat range
_process_max_pred_increase 20000 process SO max predicted increase
_process_percent_rampup_end 320 process SO percent rampup end
_process_percent_rampup_start 320 process SO percent rampup start
_process_prediction_failover_buffer 1 process prediction failover buffer
_process_save_prediction FALSE save process prediction for next instance startup
_process_so_max_inc 20000 process SO max inc
_profile_sensitive_users Database Users with restricted password profile
_project_view_columns TRUE enable projecting out unreferenced columns of a view
_projection_pushdown TRUE projection pushdown
_projection_pushdown_debug 0 level for projection pushdown debugging
_prop_old_enabled FALSE Shift to pre 11g propagation behaviour
_propogate_restore_point TRUE Allow shipping of restore point from primary to standby
_protect_frame_heaps FALSE Protect cursor frame heaps
_protect_pga_extents FALSE protection for pga extents
_proxy_connect_after_set_container TRUE Enable proxy connection after set container
_psdclog_enable FALSE Mandatory Cloud Logging of PL/SQL Utility Packages Usages
_psdclog_threshold 10 Threshold for Cloud Logging of PL/SQL Utility Packages Usages
_pseudo_bootstrap FALSE Indicate that pseudo boostrap be done
_pseudo_redo_dump FALSE Convert all internal redo dump to pseudo redo dump
_psr_opt enable feature options for standby pdb recovery
_ptf_enable_objects FALSE enable object types in PTF
_ptf_max_rows 1024 number of rows per row-buffer
_ptn_cache_threshold 1 flags and threshold to control partition metadata caching
_ptt_max_num 16 Maximum number of PTTs per session
_ptt_rec_max_num 200 Maximum number of PTTs per recursive session
_purge_idcs_access_token FALSE Purge IDCS Access Token
_push_join_predicate TRUE enable pushing join predicate inside a view
_push_join_union_view TRUE enable pushing join predicate inside a union all view
_push_join_union_view2 TRUE enable pushing join predicate inside a union view
_pwise_distinct_enabled TRUE enable partition wise distinct
_px_adaptive_dist_bypass_enabled TRUE enable the bypass table queue for adaptive distribution methods
_px_adaptive_dist_bypass_optimization 1 sets optimizations for bypass table queue for ADM
_px_adaptive_dist_method CHOOSE determines the behavior of adaptive distribution methods
_px_adaptive_dist_method_threshold 0 Buffering / decision threshold for adaptive distribution methods
_px_adaptive_dist_nij_enabled ON enable adaptive distribution methods for left non-inner joins
_px_adaptive_offload_percentage 30 percentage for PQ adaptive offloading of granules
_px_adaptive_offload_threshold 10 threshold (GB/s) for PQ adaptive offloading of granules
_px_autodop_pq_overhead TRUE adjust auto dop calculation using pq overhead
_px_back_to_parallel OFF allow going back to parallel after a serial operation
_px_bind_peek_sharing TRUE enables sharing of px cursors that were built using bind peeking
_px_broadcast_fudge_factor 100 set the tq broadcasting fudge factor percentage
_px_buf_subheap_size 4096 buffer subheap size
_px_buffer_ttl 30 ttl for px mesg buffers in seconds
_px_cdb_view_enabled TRUE parallel cdb view evaluation enabled
_px_cdb_view_join_enabled TRUE disable parallelism cap on CDB view
_px_chunk_size 1000000 default size of a chunk for row id granules (in KB)
_px_chunklist_count_ratio 32 ratio of the number of chunk lists to the default DOP per instance
_px_compilation_debug 0 debug level for parallel compilation
_px_compilation_trace 0 tracing level for parallel compilation
_px_concurrent TRUE enables pq with concurrent execution of serial inputs
_px_cpu_autodop_enabled TRUE enables or disables auto dop cpu computation
_px_cpu_operator_bandwidth CPU operator bandwidth in MB/sec for DOP computation
_px_cpu_process_bandwidth 200 CPU process bandwidth in MB/sec for DOP computation
_px_dist_agg_partial_rollup_pushdown ADAPTIVE perform distinct agg partial rollup pushdown for px execution
_px_dp_array_size 32767 Max number of pq processes supported
_px_dump_12805_source TRUE enables or disables tracing of 12805 signal source
_px_dup_proc_check FALSE enable duplicate parallel process check with name service
_px_dynamic_granules TRUE enable dynamic granule generation
_px_dynamic_granules_adjust 10 adjust dynamic granule regeneration
_px_dynamic_opt TRUE turn off/on restartable qerpx dynamic optimization
_px_dynamic_sample_size 50 num of samples for restartable qerpx dynamic optimization
_px_execution_services_enabled TRUE enable service-based constraint of px slave allocation
_px_extended_join_skew_handling TRUE enables extended skew handling for parallel joins
_px_external_table_default_stats TRUE the external table default stats collection enable/disable
_px_filter_parallelized TRUE enables or disables correlated filter parallelization
_px_filter_skew_handling TRUE enable correlated filter parallelization to handle skew
_px_flood_ctrl_time 900 parallel flood control time in seconds
_px_freelist_latch_divisor 2 Divide the computed number of freelists by this power of 2
_px_gim_factor 100 weighted autodop global index maintenance factor
_px_granule_alignment 1024 default size of a rowid range granule (in KB)
_px_granule_batch_size 26 maximum size of a batch of granules
_px_granule_randomize TRUE enables or disables randomization of parallel scans rowid granules
_px_granule_size 1000000 default size of a rowid range granule (in KB)
_px_groupby_pushdown FORCE perform group-by pushdown for parallel query
_px_hold_time 0 hold px at execution time (unit: second)
_px_hybrid_TSM_HWMB_load TRUE Enable Hybrid Temp Segment Merge/High Water Mark Brokered load method
_px_hybrid_partition_execution_enabled TRUE enable parallel hybrid partition execution
_px_hybrid_partition_skew_threshold 10 partitions bigger than threshold times average size are skewed
_px_increase_join_frag_size TRUE increase join message fragment size
_px_index_sampling_objsize TRUE parallel query sampling for index create based on object size
_px_io_process_bandwidth 200 IO process bandwidth in MB/sec for computing DOP
_px_io_system_bandwidth 0 total IO system bandwidth in MB/sec for computing DOP
_px_join_skew_handling TRUE enables skew handling for parallel joins
_px_join_skew_minfreq 30 sets minimum frequency(%) for skewed value for parallel joins
_px_join_skew_null_handling TRUE enables null skew handling improvement for parallel outer joins
_px_join_skew_ratio 10 sets skew ratio for parallel joins
_px_join_skew_sampling_percent 0 Sets sampling percentage for skew handling sampling queries
_px_join_skew_sampling_time_limit 50 Sets execution time limit for skew handling sampling queries
_px_join_skew_use_histogram TRUE Enables retrieval of skewed values from histogram when possible
_px_join_skewed_values_count 0 force join skew handling with specified skewed values count
_px_kxib_tracing 0 turn on kxib tracing
_px_load_balancing_policy UNIFORM parallel load balancing policy
_px_load_factor 300 weighted autodop load factor
_px_load_monitor_threshold 10000 threshold for pushing information to load slave workload monitor
_px_load_publish_interval 200 interval at which LMON will check whether to publish PX load
_px_loc_msg_cost 1000 CPU cost to send a PX message via shared memory
_px_max_granules_per_slave 100 maximum number of rowid range granules to generate per slave
_px_max_map_val 32 Maximum value of rehash mapping for PX
_px_max_message_pool_pct 40 percentage of shared pool for px msg buffers range [5,90]
_px_message_compression TRUE enable compression of control messages for parallel query
_px_min_granules_per_slave 13 minimum number of rowid range granules to generate per slave
_px_min_ndv_per_slave_perc_func 2 mininum NDV of TQ keys needed per slave for parallel percentile
_px_minus_intersect TRUE enables pq for minus/interect operators
_px_net_msg_cost 10000 CPU cost to send a PX message over the internconnect
_px_nlj_bcast_rr_threshold 10 threshold to use broadcast left random right distribution for NLJ
_px_no_granule_sort FALSE prevent parallel partition granules to be sorted on size
_px_no_stealing FALSE prevent parallel granule stealing in shared nothing environment
_px_nss_planb TRUE enables or disables NSS Plan B reparse with outline
_px_numa_stealing_enabled TRUE enable/disable PQ granule stealing across NUMA nodes
_px_numa_support_enabled FALSE enable/disable PQ NUMA support
_px_object_sampling 200 parallel query sampling for base objects (100000 = 100%)
_px_object_sampling_enabled TRUE use base object sampling when possible for range distribution
_px_object_sampling_multiplier 2 number of samples to send to QC per slave is DOP * prmixsm
_px_onepass_slave_acquisition TRUE enable/disable one pass slave acquisition for parallel execution
_px_oneslave_per_instance_parse TRUE send parse to one slave per instance
_px_overhead_exec_ctrlmesg 4 pq overhead on sending one control message during execution (in micros
_px_overhead_init_endpoints 4 pq overhead on setting up one end point during initialization (in micr
_px_overhead_init_slavealloc 1000 pq overhead on allocating per slave during initialization (in microsec
_px_overhead_teardown 600 pq overhead on setting up one end point during initialization (in micr
_px_parallel_spawn_min_count 2 PQ parallel spawn min threshold count
_px_parallelize_expression TRUE enables or disables expression evaluation parallelization
_px_parallelize_non_native_datatype TRUE enable parallelization for non-native datatypes
_px_partial_rollup_pushdown ADAPTIVE perform partial rollup pushdown for parallel execution
_px_partition_load_dist_threshold 64 # of load slave to # of partition ratio to switch distribution
_px_partition_load_skew_handling OFF enable partition load skew handling
_px_partition_load_skew_threshold 3 partition loads bigger than threshold times average are skewed
_px_partition_scan_enabled TRUE enables or disables parallel partition-based scan
_px_partition_scan_threshold 64 least number of partitions per slave to start partition-based scan
_px_partition_skew_threshold 80 percentage of table size considered as threshold for skew determinatio
_px_proactive_slave_alloc_threshold 8 parallel proactive slave allocation threshold/unit
_px_proactive_slave_release 1 early release of producer slaves of final DFO
_px_proc_constrain TRUE reduce parallel_max_servers if greater than (processes - fudge)
_px_pwg_enabled TRUE parallel partition wise group by enabled
_px_pwise_wif_enabled TRUE enable parallel partition wise window function
_px_pwmr_enabled TRUE parallel partition wise match recognize enabled
_px_replication_enabled TRUE enables or disables replication of small table scans
_px_reuse_server_groups MULTI enable/disable reusing of server groups that are already acquired
_px_round_robin_rowcnt 1000 round robin row count to enq to next slave
_px_rownum_pd TRUE turn off/on parallel rownum pushdown optimization
_px_scalable_gby_invdist TRUE scalable PX plan for GBY w/ inverse distribution functions
_px_scalable_invdist TRUE enable/disable px scalable plan for inverse distribution functions
_px_scalable_invdist_mcol TRUE enable/disable px plan for percentile functions on multiple columns
_px_send_timeout 300 IPC message send timeout value in seconds
_px_shared_hash_join FALSE enable/disable shared hash join
_px_single_server_enabled TRUE allow single-slave dfo in parallel query
_px_slave_parse_first_with_outline_hints TRUE Enable/Disable trying outlined plan first
_px_split_batches_per_slave 7 number of split granules per slave for exadoop
_px_split_multi_msg TRUE use multiple messages to send batch of split granules
_px_split_use_single_list TRUE use single list for split granules
_px_tq_memcpy_threshold 100 threshold for PQ TQ to use memcpy for packing columns
_px_tq_rowhvs TRUE turn on intra-row hash valueing sharing in TQ
_px_trace none px trace parameter
_px_ual_serial_input TRUE enables new pq for UNION operators
_px_wif_dfo_declumping CHOOSE NDV-aware DFO clumping of multiple window sorts
_px_wif_extend_distribution_keys TRUE extend TQ data redistribution keys for window functions
_px_wif_min_ndv_per_slave 2 mininum NDV of TQ keys needed per slave for scalable WiF PX
_px_window_skew_handling TRUE enable window function skew handling
_px_window_skew_sample_size 1000 window function skew sample size
_px_xt_granule_sampling_ratio 200 range table queue object sampling ratio for external table
_px_xtgranule_size 10000 default size of a external table granule (in KB)
_qa_control 0 Oracle internal parameter to control QA
_qa_lrg_type 0 Oracle internal parameter to specify QA lrg type
_qc_oracle_script_counter TRUE QC sends _oracle_script parameter as counter
_qesma_access_count 1 controls scan count collection for X$QESMA_ACCESS_COUNT table
_qesma_bo_lru_sz 25 size of base object LRU list for QESMA session cache
_qesma_mvob_lru_sz 25 size of MVOB LRU list for QESMA session cache
_qesma_mvob_pin_lru_sz 5 size of MVOB pin LRU list for QESMA session cache
_qesma_rt_parallel_check 1 verify qesma metadata at runtime for parallel execution
_qesmasc_trc 0 tracing for QESMA session cache
_qkgl_crit_pct_threshold 80 Queue KGL critical percentage allocation threshold
_qksfgi_disable_action_mask 0 disable fine-grained cursor invalidation actions
_qksfgi_disable_oct_mask 0 disable fine-grained cursor invalidation for certain oct
_qksfgi_dix_val FALSE controls action of fine-grained cursor invalidation for DROP INDEX
_qksfgi_dynamic_partitions enable partition bind SQLIDs for
_qksfgi_feature_level 0 controls the feature level for fine-grained cursor invalidation
_qkslvc_47510_sys 1 enable project 47510 for internal users
_qkslvc_47510_test 0 enable project 47510 for testing
_qkslvc_diag_flags 0 diagnostic flags for qkslvc
_qkslvc_extended_bind_sz 1 controls error checking for the max_string_size parameter
_quantified_path_pattern_maximum_upper_bound maximum upper bound allowed for SQL PGQ quantified path pattern
_quarantine_enabled TRUE quarantine: enable
_quarantine_max_mem 1 quarantine: max amount of memory
_quarantine_max_objs 10000 quarantine: max number of objects
_quarantine_per_hour 60 quarantine: limit per hour
_query_cost_rewrite TRUE perform the cost based rewrite with materialized views
_query_execution_cache_max_size 131072 max size of query execution cache
_query_execution_time_limit 0 Query execution time limit in seconds
_query_mmvrewrite_maxcmaps 20 query mmv rewrite maximum number of cmaps per dmap in query disjunct
_query_mmvrewrite_maxdmaps 10 query mmv rewrite maximum number of dmaps per query disjunct
_query_mmvrewrite_maxinlists 5 query mmv rewrite maximum number of in-lists per disjunct
_query_mmvrewrite_maxintervals 5 query mmv rewrite maximum number of intervals per disjunct
_query_mmvrewrite_maxpreds 10 query mmv rewrite maximum number of predicates per disjunct
_query_mmvrewrite_maxqryinlistvals 500 query mmv rewrite maximum number of query in-list values
_query_mmvrewrite_maxregperm 512 query mmv rewrite maximum number of region permutations
_query_on_physical TRUE query on physical
_query_rewrite_1 TRUE perform query rewrite before&after or only before view merging
_query_rewrite_2 TRUE perform query rewrite before&after or only after view merging
_query_rewrite_drj FALSE mv rewrite and drop redundant joins
_query_rewrite_expression TRUE rewrite with cannonical form for expressions
_query_rewrite_extended_cursor_sharing TRUE allow extended cursor sharing for MV query rewrite
_query_rewrite_fpc TRUE mv rewrite fresh partition containment
_query_rewrite_fudge 90 cost based query rewrite with MVs fudge factor
_query_rewrite_jgmigrate TRUE mv rewrite with jg migration
_query_rewrite_maxdisjunct 257 query rewrite max disjuncts
_query_rewrite_or_error FALSE allow query rewrite, if referenced tables are not dataless
_query_rewrite_setopgrw_enable TRUE perform general rewrite using set operator summaries
_query_rewrite_use_on_query_computation TRUE query rewrite use on query computation
_query_rewrite_user_bind_peeking TRUE allow user bind peeking for MV query rewrite
_query_rewrite_vop_cleanup TRUE prune frocol chain before rewrite after view-merging
_queue_buffer_max_dump_len 65536 max number of bytes to dump to trace file for queue buffer dump
_rac_dbtype_reset FALSE RAC database type reset from CRS
_rac_propagate_last_rba TRUE Propagate last written log redo address in RAC for log mining
_radm_enabled TRUE Data Redaction
_rbr_ckpt_tracing 0 Enable reuse block range checkpoint tracing
_rc_sys_obj_enabled TRUE result cache enabled for Sys Objects
_rce_dblink_hostname_transform FALSE Transform RCE database link to add hostname
_rce_dns_suffix suffix for RCE DNS Proxy based DNS resolution
_rcfg_disable_verify TRUE if TRUE disables verify at reconfiguration
_rcfg_parallel_fixwrite TRUE if TRUE enables parallel fixwrite at reconfiguration
_rcfg_parallel_replay TRUE if TRUE enables parallel replay and cleanup at reconfiguration
_rcfg_parallel_verify FALSE if TRUE enables parallel verify at reconfiguration
_rdbms_compatibility 19.0 default RDBMS compatibility level
_rdbms_internal_fplib_enabled FALSE enable CELL FPLIB filtering within rdbms
_rdbms_internal_fplib_raise_errors FALSE enable reraising of any exceptions in CELL FPLIB
_rdbms_min_compatibility 19.0 default mininum RDBMS compatibility level
_rds_congestion_timeout 0 Configure RDS Congestion timer (us)
_rds_congestion_type Configure RDS Congestion type
_re_fast_sql_operator all enables fast boxable sql operator
_re_independent_expression_cache_size 20 defines max number of compiled cached expressions for iee
_re_max_sql_op_cache_lmt 7 maximun sql operator cache limit
_re_num_complex_operator 1000 defines max number of compiled complex operator per ruleset-iee
_re_num_rowcache_load 2 defines max number of complex operators loaded with row cache
_re_result_cache_keysiz 20 defines max number key for result cache hash table
_re_result_cache_size 20 defines max number of cached elements for result cache
_read_delay_threshold 4294967294 delay in read i/o completion threshold (in seconds)
_read_mostly_enable_logon FALSE Read mostly/ Read only instances enable non-privileged logons
_read_mostly_instance FALSE indicates this is a read_mostly instance
_read_mostly_instance_qa_control 0 internal parameter to control read mostly instance QA
_read_mostly_lock_mitigation TRUE Read Mostly Lock mitigation support
_read_mostly_slave_timeout 20 Time to wait on read mostly node when hub not available
_read_only_slave_timeout 30 Time to wait on read only node when hub not available
_read_only_violation_dump_to_trace FALSE read-only violation dump to trace files
_read_only_violation_max_count 500 read-only violation array max count
_read_only_violation_max_count_per_module 100 read-only violation array per module max count
_read_optimized_table_lookup TRUE enables read-optimized table lookup
_readable_standby_sync_interval 0 readable standby recovery global sync interval
_readable_standby_sync_timeout 10 readable standby query scn sync timeout
_reader_farm_isolation_enable FALSE Reader Farm instances isolation enable
_reader_farm_isolation_time_threshold 200 reader farm isolation time threshold
_real_time_apply_sim 0 Simulation value with real time apply
_realfree_heap_max_size 32768 minimum max total heap size, in Kbytes
_realfree_heap_mode 0 mode flags for real-free heap
_realfree_heap_pagesize 65536 hint for real-free page size in bytes
_realfree_pq_heap_pagesize 65536 hint for pq real-free page size in bytes
_reclaim_lob_index_scan_limit 0 limit lob index scanning during lob space-reclaim
_reco_network_timeout 10 RECO read/send timeout value
_reco_populate_mode 1 Mode of RECO protocol execution
_reco_sessions_max_percentage 50 allowed RECO sessions as a percentage of total sessions allowed
_reconfiguration_opt_level 493 reconfiguration optimization level
_record_module_name TRUE Record module name in BEGIN action
_recoverable_recovery_batch_percent 50 Recoverable recovery batch size (percentage of buffer cache)
_recoverable_recovery_max_influx_buffers 100000 Recoverable recovery number of influx buffers limit
_recovery_asserts FALSE if TRUE, enable expensive integrity checks
_recovery_percentage 50 recovery buffer cache percentage
_recovery_read_limit 1024 number of recovery reads which can be outstanding
_recovery_skip_cfseq_check FALSE allow media recovery even if controlfile seq check fails
_recovery_test_kdivs 0 If not 0, Throw error in kdivs_hnsw_scan_get_rids
_recovery_verify_writes FALSE enable thread recovery write verify
_recursive_imu_transactions FALSE recursive transactions may be IMU
_recursive_with_branch_iterations 7 Expected number of iterations of the recurive branch of RW/CBY
_recursive_with_control 0 control different uses/algorithms related to recursive with
_recursive_with_max_recursion_level 0 check for maximum level of recursion instead of checking for cycles
_recursive_with_parallel TRUE Enable/disable parallelization of Recursive With
_recursive_with_using_temp_table FALSE Enable the use of CDT for serial execution of Recursive With
_recycle_con_cache_size 5 Recycle con# cache size
_redef_on_statement FALSE Use on-statement refresh in online redefinition
_redo_compatibility_check FALSE general and redo/undo compatibility sanity check
_redo_encryption_cipher_mode XTS default redo encryption block cipher mode
_redo_generation_max_kbytes_sec 0 redo generation maximum KB/s
_redo_indexes_apply DISABLE utilize redo range indexes in recovery
_redo_log_check_backup 10 time interval in minutes between wakeups to check backup of redo logs
_redo_log_debug_config 0 Various configuration flags for debugging redo logs
_redo_log_key_reuse_count 0 Determines the number of redo logs sharing the same redo log key
_redo_log_record_life 168 Life time in hours for redo log table records
_redo_read_from_memory TRUE Enable reading redo from in-memory log buffer
_redo_transport_async_mode 0 redo transport ASYNC process mode
_redo_transport_compress_all TRUE Is ASYNC LNS compression allowed?
_redo_transport_evict_threshold 10 Threshold beyond which a slower ASYNC connection will be evicted
_redo_transport_max_kbytes_sec 0 redo transport maximum KB/s
_redo_transport_min_kbytes_sec 0 redo transport minimum KB/s
_redo_transport_redo_log_management redo log management
_redo_transport_resource_management FALSE Redo transport resource management
_redo_transport_sanity_check 0 redo transport sanity check bit mask
_redo_transport_stall_time 360 use parameter DATA_GUARD_MAX_IO_TIME
_redo_transport_stall_time_long 3600 use parameter DATA_GUARD_MAX_LONGIO_TIME
_redo_transport_stream_test TRUE test stream connection?
_redo_transport_stream_writes TRUE Stream network writes?
_redo_transport_vio_size_req 1048576 VIO size requirement
_redo_write_coalesce_all_threshold 0 Redo write coalescing threshold (all strands) in bytes
_redo_write_coalesce_slave_threshold 0 Redo write coalescing threshold (slave strands) in bytes
_redo_write_sync_single_io TRUE enable sync I/O for single redo write
_reduce_sby_log_scan TRUE enable log scan optimization
_ref_cons_sql_enforcement TRUE disable extended/data ref constraint SQL enforcement
_refclone_redirect FALSE statement redirection in Refreshable Clone
_refclone_source_connect_string connect string for redirection in refreshable clone
_refresh_clone_adg TRUE allows a refreshable clone to function as an ADG
_reg_cache_status FALSE Enables or disabled caching
_region_name gsm region name
_release_insert_threshold 5 maximum number of unusable blocks to unlink from freelist
_reliable_block_sends TRUE if TRUE, no side channel on reliable interconnect
_relocate_pdb FALSE Relocate PDB to another RAC instance after it is closed in the current
_relocation_commit_batch_size 8 ASM relocation commit batch size
_remessage_dbwrs 0 DBWR wait and remessage time - in cs
_remote_asm remote ASM configuration
_remote_awr_enabled FALSE Enable/disable Remote AWR Mode
_remote_extproc_agent FALSE enable/disable remote extproc agent
_remote_http_port 0 HTTP port number registered with remote listener
_remote_sv_sequence 4 0 disables smart sv optimization, 1 enables it only in director instan
_remove_aggr_subquery TRUE enables removal of subsumed aggregated subquery
_remove_exf_component TRUE enable/disable removing of components EXF and RUL during upgrade
_remove_hostname_from_module FALSE If enabled then remove hostname, set only application as module
_rep_base_path base path for EM reports in database
_replace_virtual_columns TRUE replace expressions with virtual columns
_report_capture_cycle_time 60 Time (in sec) between two cycles of report capture daemon
_report_capture_dbtime_percent_cutoff 50 100X Percent of system db time daemon is allowed over 10 cycles
_report_capture_recharge_window 10 No of report capture cycles after which db time is recharged
_report_capture_timeband_length 1 Length of time band (in hours) in the reports time bands table
_report_request_ageout_minutes 60 Time (in min) after which a report request is deleted from queue
_request_boundaries 3 request boundaries mode
_request_deferral_enabled FALSE enable request deferral
_request_deferral_timeout_sec 0 request deferral timeout
_reset_increase_lmd_process TRUE set to true to allow reset of _increase_lmd_process changes
_reset_increase_lms_process TRUE set to true to allow reset of _increase_lms_process changes
_resource_exhaustion_warning_thresholds 655361281 thresholds and frequency of actions related to resource exhaustion
_resource_exhaustion_warnings 0 enable warnings/crash when certain finite resources are used up
_resource_includes_unlimited_tablespace FALSE Whether RESOURCE role includes UNLIMITED TABLESPACE privilege
_resource_manager_always_off FALSE disable the resource manager always
_resource_manager_plan resource mgr top plan for internal use
_restore_block0 on restore block0
_restore_create_directory TRUE automatically create directory during restore
_restore_delayed_write FALSE restore datafiles with delayed write option
_restore_maxopenfiles 8 restore assumption for maxopenfiles
_restore_spfile restore spfile to this location
_restrict_become_user TRUE become user functionality restricted
_restrict_db_link_user_entries 10000 Maximum number of entries per db link user
_restrict_link_local_address TRUE Restrict Link Local IP addresses for Outbound Communication
_restrict_local_user_dml TRUE Restrict Local user's ability to update sensitive tables
_restrict_operator_access FALSE Restrict Cloud Operator access to customer PDBs
_restrict_pdb_gv FALSE restrict GV$ in a PDB
_result_cache_auto_blocklist_epsilon 10000 How much better blocklisted objects must be to be unblocklisted
_result_cache_auto_blocklist_frequency 40000 Frequency of autoblocklist checks in units of RC invalidations
_result_cache_auto_blocklist_threshold 1000 Threshold of ratio of ROs created to used before blocklisting
_result_cache_auto_broadcast_threshold 10000 Threshold of RAC round trip times before blocklisting
_result_cache_auto_dml_monitoring_duration 15 result cache auto dml monitoring duration
_result_cache_auto_dml_monitoring_slots 4 result cache auto dml monitoring slot
_result_cache_auto_dml_threshold 16 result cache auto dml threshold
_result_cache_auto_dml_trend_threshold 20 result cache auto dml trend threshold
_result_cache_auto_execution_threshold 1 result cache auto execution threshold
_result_cache_auto_ignore_list 0 object numbers that will never be auto blocklisted
_result_cache_auto_size_threshold 100 result cache auto max size allowed
_result_cache_auto_time_distance 300 result cache auto time distance
_result_cache_auto_time_threshold 1000 result cache auto time threshold
_result_cache_black_list cache_id's not allowed to use the result cache
_result_cache_block_size 4096 result cache block size
_result_cache_copy_block_count 1 blocks to copy instead of pinning the result
_result_cache_determ_salt FALSE Use deterministic salt for result cache?
_result_cache_deterministic_plsql FALSE result cache deterministic PLSQL functions
_result_cache_do_recycle_period 300 Timeout value for DOs added through invalidation
_result_cache_global TRUE Are results available globally across RAC?
_result_cache_global_send TRUE Is global send conditional in RAC?
_result_cache_history_size 0 memory used to track PL/SQL function history
_result_cache_latch_count 4 number of result cache latches
_result_cache_latch_free_reads NEVER latch free reads
_result_cache_load_rate 1 Simulated global load rate (bytes per 1/100 sec)
_result_cache_object_black_list 0 object numbers not allowed to use the result cache
_result_cache_per_pdb TRUE Is service result cache per pdb
_result_cache_timeout 1 maximum time (sec) a session waits for a result
_result_cache_use_hash_table TRUE whether to use hash table for object tracking
_result_cache_white_list users allowed to use result cache
_resumable_critical_alert 0 raise critical alert for resumable failure
_retry_file_copy TRUE Enable retry for file copy in Create PDB
_reuse_dropped_pdbid_time 180 Time in seconds to wait before reusing a dropped PDB ID
_reuse_index_loop 5 number of blocks being examine for index block reuse
_reuse_object_number_delay 0 delay in days before reusing object numbers
_reuse_object_numbers 7 reuse object numbers
_reuse_object_numbers_qa 0 reuse object numbers testing
_reuse_object_numbers_reserve_days 60 number of days worth of obj# to maintain in recycle table
_rf_blocks_per_entity 5 number of blocks per entity
_right_outer_hash_enable TRUE Right Outer/Semi/Anti Hash Enabled
_rm_atp_cpu_cnt_scale 1 Scaling factor for cpu count in ATP
_rm_base_data_dg_sz 125566976 Base DATA disk group size for ADBS
_rm_cell_cpu_scale 0 Scaling factor for storage cell cpu usage
_rm_cluster_interconnects interconnects for RAC use (RM)
_rm_exadata_disable_dbcpurm FALSE Disable the Exadata DB cpu resource manager feature
_rm_exadata_fcsize_unit 1099511627776 PDB usage size unit for flash cache for Exadata
_rm_exadata_partition_fc FALSE Partition flash cache for Exadata
_rm_exadata_pdb_cpu_cnt FALSE Use PDB CPU cnt for Exadata smart scan
_rm_exadata_pdb_cpu_cnt_mult 1 Multiplication factor for PDB cpu count
_rm_exadata_pdb_fcsz_scale 0 Scale factor for PDB FC size
_rm_exadata_pdb_mult_storage 1 Multiplier of PDB storage count for Exadata throughput-based IORM limi
_rm_force_caging Force Instance Caging
_rm_numa_sched_enable TRUE Is Resource Manager (RM) related NUMA scheduled policy enabled
_rm_numa_simulation_cpus 0 number of cpus for each pg for numa simulation in resource manager
_rm_numa_simulation_pgs 0 number of PGs for numa simulation in resource manager
_rm_schedstat_off FALSE Disable Linux schedstat
_rm_sgllim 0 Single CPU limit control
_rm_superlong_threshold 300000 DBRM kskrunstatechk superlong threshold
_rm_tolerance_lwt 5 RM tolerance for LWT to report consumed cpu
_rman_client_wait_time 10 maximum time to wait for the client
_rman_io_priority 3 priority at which rman backup i/o's are done
_rman_restore_db_master_key_sync_source CONTROL_FILE RMAN restore DB master key sync source
_rman_roundrobin_placement Numa round robin placement for RMAN procs
_rman_space_bitmap_blocks 1 control backup and restore of space bitmap blocks
_rmt_for_table_redef_enabled TRUE Use Rowid Mapping Table for table redef
_rmv_dynamic_priority TRUE enable rmv priority modification
_roi_first_open_wait 120 duration of ROI first open wait for RWI open
_rollback_segment_count 0 number of undo segments
_rollback_segment_initial 1 starting undo segment number
_rollback_stopat 0 stop at -position to step rollback
_rolling_patchlevel This parameter is no longer used
_rolling_vsnnum Mimic given vsnnum during test
_rond_test_mode 0 rac one node test mode
_root_clone_skip_trigger TRUE Skip trigger in Application Root Clone
_root_clone_state_from_root TRUE Application Root Clone's state comes from Application Root
_router_accept_mappings TRUE enable validation against target PDB's accepted mappings
_router_allow_locked_target_user FALSE Allow queries even if Target user status is locked
_router_current_user TRUE enable routing current username to remote PDB via SQLNet
_router_ddl_redirect FALSE Redirect DDL opcodes from Router PDB to Target PDB
_router_pdb FALSE enable router PDB functionality
_row_cache_cursors 20 number of cached cursors for row cache management
_row_cache_dump_cooling_period 10 Period to wait (in minutes) before resetting dump count
_row_cache_dump_interval 0 Interval (in seconds) between each dump
_row_cr TRUE enable row cr for all sql
_row_locking always row-locking
_row_shipping_explain FALSE enable row shipping explain plan support
_row_shipping_threshold 100 row shipping column selection threshold
_rowlen_for_chaining_threshold 1000 maximum rowlen above which rows may be chained across blocks
_rowsets_cdb_view_enabled TRUE rowsets enabled for CDB views
_rowsets_enabled TRUE enable/disable rowsets
_rowsets_max_enc_rows 64 maximum number of encoded rows in a rowset
_rowsets_max_rows 256 maximum number of rows in a rowset
_rowsets_target_maxsize 524288 target size in bytes for space for a rowset
_rowsets_use_encoding TRUE allow/disallow use of encoding with rowsets
_rowsets_use_work_heap_buffer TRUE allow/disallow use of work heap buffer for values for rowsets
_rowsource_execution_statistics FALSE if TRUE, Oracle will collect rowsource statistics
_rowsource_profiling_statistics TRUE if TRUE, Oracle will capture active row sources in v$active_session_hi
_rowsource_statistics_sampfreq 128 frequency of rowsource statistic sampling (must be a power of 2)
_rowsrc_trace_level 0 Row source tree tracing level
_rq_shm_max_size 1024 maximum size of an RQuery shared memory segement (in KB)
_rsrc_cpu_count CPU Count for allocating resources.
_rta_sync_wait_timeout 10 RTA sync wait timeout
_rtabnd_update_offload TRUE RFS process offload RTA boundary update
_rtaddm_trigger_args comma-separated list of numeric arguments for RT addm trigger
_rtaddm_trigger_enabled FALSE To enable or disable Real-Time ADDM automatic trigger
_rtc_infeasible_threshold 25 Redo Transport Compression infeasible threshold
_rule_max_dnfp_cnt 1024 Rules max dnf piece count
_runtime_index_key_length_check 1 allow runtime checking of index key length
_runtime_limit_parallel_fptr 60 run-time limit for for parallel first-pass recovery
_saga_afterlra_interval 300 qmon periodic interval for after saga processing
_saga_afterlra_option enabled option for after saga processing
_saga_clear_interval 86400 qmon periodic interval for processing saga clearing job
_saga_timeout_interval 3600 qmon periodic interval for processing saga timeout
_saga_timeout_operation_type rollback operation type when a saga expires
_sage_block_checking FALSE enable block checking of blocks returned by smartscan
_sample_rows_per_block 4 number of rows per block used for sampling IO optimization
_save_afns_on_subset_pdb_creation FALSE Use one reserved AFN for skipped tablespaces on pdb subset
_sbt_proxy_copy_buffer_size 0 Internal variable SBT library restore read ahead buffer size
_scalar_type_lob_storage_threshold 4000 threshold for VARCHAR2, NVARCHAR2, and RAW storage as BLOB
_scatter_gcs_resources FALSE if TRUE, gcs resources are scattered uniformly across sub pools
_scatter_gcs_shadows FALSE if TRUE, gcs shadows are scattered uniformly across sub pools
_sched_delay_max_samples 4 scheduling delay maximum number of samples
_sched_delay_measurement_sleep_us 1000 scheduling delay mesurement sleep us
_sched_delay_os_tick_granularity_us 16000 os tick granularity used by scheduling delay calculations
_sched_delay_sample_collection_thresh_ms 200 scheduling delay sample collection duration threshold ms
_sched_delay_sample_interval_ms 1000 scheduling delay sampling interval in ms
_scheduler_capture_dropped_obj_nums TRUE Capture dropped object numbers for scheduler jobs
_scheduler_cjq0_buffer_size 1024 buffer size (in KB) for scheduler IMT for CJQ process
_scheduler_inmemory_trace_timeout 600 Timeout for scheduler internal operations
_scheduler_jnnn_buffer_size 32 buffer size (in KB) for scheduler IMT for JNNN processes
_scheduler_ora_buffer_size 32 buffer size (in KB) for scheduler IMT for ORA processes
_schema_max_string_size 0 control schema-level max_string_size
_scn_wait_interface_max_backoff_time_secs 600 max exponential backoff time for scn wait interface in kta
_scn_wait_interface_max_timeout_secs 2147483647 max timeout for scn wait interface in kta
_sdiag_crash NONE sql diag crash
_search_space_from_beginning 2147483647 search free space from the beginning of a tablespace
_sec_enable_test_rpcs FALSE Whether to enable the test RPCs
_second_spare_parameter second spare parameter - integer
_second_spare_pdb_parameter second spare pdb parameter - integer
_securefile_log_num_latches 0 Maximum number of open descriptors for securefile log
_securefile_log_shared_pool_size 0 Size of securefile log buffer pool from SGA
_securefile_shrink_enable_nowaitlck FALSE Enable Securefile Shrink NOWAIT row locking
_securefile_shrink_linked_list_limit 100 Size limit on Securefile Lob Shrink state Linked list
_securefile_timers FALSE collect kdlu timers and accumulate per layers
_securefiles_bgtimeout 0 securefiles segment background invocation timeout
_securefiles_breakreten_retry 5 segment retry before dishonoring retention
_securefiles_bulkclnout TRUE securefiles segment bulk clnout optization
_securefiles_bulkinsert FALSE securefiles segment insert only optization
_securefiles_concurrency_estimate 12 securefiles concurrency estimate
_securefiles_dealloc_cfs 0 securefiles deallocate directly to CFS
_securefiles_fg_retry 100 segment retry before foreground waits
_securefiles_forceflush FALSE securefiles force flush before allocation
_securefiles_memory_percentofSGA 8 securefiles memory as percent of SGA
_securefiles_min_retention_override securefiles override retention min seconds
_securefiles_spcutl FALSE securefiles segment utl optimization
_seed_root_undo_ratio 30 Ratio of PDB$SEED to ROOT undo size, expressed as a percentage
_selectivity_for_srf_enabled FALSE enable/disable selectivity for storage reduction factor
_selfjoin_mv_duplicates TRUE control rewrite self-join algorithm
_selftune_checkpoint_write_pct 3 Percentage of total physical i/os for self-tune ckpt
_selftune_checkpointing_lag 300 Self-tune checkpointing lag the tail of the redo log
_sem_per_semid the exact number of semaphores per semaphore set to allocate
_send_ast_to_foreground AUTO if TRUE, send ast message to foreground
_send_close_with_block TRUE if TRUE, send close with block even with direct sends
_send_requests_to_pi TRUE if TRUE, try to send CR requests to PI buffers
_sensitive_common_as_local FALSE treat common user as local user for sensitive data handling
_sensitive_common_users list of common users to be treated as local
_sensitive_fixed_invalidate Invalidate sensitive policy fixed object dependent cursors
_sensitive_fixed_restrict FALSE Restrict access to fixed table rows for both local and common user
_sequence_scale_extend FALSE Force sequence creation with scale extend
_sequence_scale_noextend FALSE Force sequence creation with scale noextend
_sequence_scalev2_feature AUTO Inmemory Sequence Scalev2 flags
_serial_direct_read auto enable direct read in serial
_serial_log_write_worker_io FALSE Serialize log write worker I/O
_serial_recovery FALSE force serial recovery or parallel recovery
_serializable FALSE serializable
_serialize_lgwr_sync_io FALSE Serialize LGWR SYNC local and remote io
_service_cleanup_timeout 30 timeout to peform service cleanup
_service_internal_gateway service name registered with Net Listener on Internal Gateway
_sess_sign_num_pools 16 session signature: number of pools
_sess_template_all_overflow FALSE session template: put all attributes into overflow
_sess_template_cache_buckets 128 session template: number of cache buckets
_sess_template_enabled TRUE session template: enabled
_sess_template_max_cache_size 5 session template: max cache size (in 1/100% of SGA)
_sess_template_new_lists 16 session template: number of new lists
_sess_template_purge_time_mins 60 session template: purge time (in minutes)
_session_allocation_latches 4 one latch per group of sessions
_session_aware_replay TRUE Enable session aware replay
_session_cached_instantiations 60 Number of pl/sql instantiations to cache in a session.
_session_context_size 10000 session app context size
_session_idle_bit_latches 0 one latch per session or a latch per group of sessions
_session_limit_percent_cap 25 session limit percent cap
_session_max_pred_increase 20000 session SO max predicted increase
_session_modp_list 2 send session's modified parameter list to client
_session_page_extent 2048 Session Page Extent Size
_session_percent_rampup_end 504 session SO percent rampup end
_session_percent_rampup_start 504 session SO percent rampup start
_session_prediction_failover_buffer 1 session prediction failover buffer
_session_preserve_logon_container FALSE preserve the logon container id in the session
_session_save_prediction FALSE save session prediction for next instance startup
_session_so_max_inc 20000 session SO max inc
_session_wait_history 10 enable session wait history collection
_set_con_data_share FALSE Use set container for data share connections
_set_container_service DEFAULT set container service
_seventeenth_spare_parameter seventeenth spare parameter - integer
_seventeenth_spare_pdb_parameter seventeenth spare pdb parameter - integer
_seventh_spare_parameter seventh spare parameter - integer
_seventh_spare_pdb_parameter seventh spare pdb parameter - integer
_seventieth_spare_parameter seventieth spare parameter - integer
_seventieth_spare_pdb_parameter seventieth spare pdb parameter - boolean
_seventy-eighth_spare_parameter seventy-eighth spare parameter - integer
_seventy-fifth_spare_parameter seventy-fifth spare parameter - integer
_seventy-first_spare_parameter seventy-first spare parameter - integer
_seventy-fourth_spare_parameter seventy-fourth spare parameter - integer
_seventy-ninth_spare_parameter seventy-ninth spare parameter - integer
_seventy-second_spare_parameter seventy-second spare parameter - integer
_seventy-seventh_spare_parameter seventy-seventh spare parameter - integer
_seventy-sixth_spare_parameter seventy-sixth spare parameter - integer
_seventy-third_spare_parameter seventy-third spare parameter - integer
_sf_default_enabled TRUE enable 12g securefile default
_sga_alloc_slaves_term_timeout_secs 120 Termination timeout in secs for SA** slaves
_sga_clear_dump FALSE Allow dumping encrypted blocks in clear for debugging
_sga_early_trace 0 sga early trace event
_sga_grow_batch_size 2147483648 Dynamic SGA grow batch size
_sga_heap_chunk_alignment FALSE force SGA heap chunk alignment
_sga_heap_chunk_alignment_disabled FALSE force SGA heap chunks not to be aligned
_sga_shrink_allow FALSE Allow SGA shrink operation
_shadow_lost_write_found 118 Specify shadow lost write error handling
_shadow_lost_write_tracing 0 Enable new lost write tracing
_shard_allow_stale_read TRUE allow reading stale data during recovery
_shard_bddl_test_mode 0 shard BDDL test mode
_shard_cached_sessions 0 session cache size for cross shard SQLs
_shard_ddl_policy ASYNC DDL execution mode for shards
_shard_enable_cr_async_ddl TRUE SNR enable cross-region readonly async-DDL
_shard_enable_serialized_ddl TRUE enable workload-serialized DDL in Oracle Sharding Replication
_shard_foll_io_timeout_us 1000000 shard repl queue wait times in microseconds
_shard_hb_loss 0 SNR heartbeat loss timeout, csecs
_shard_lcr_cksum TRUE enable native sharding replication lcr checksum
_shard_max_num_raft_logfile 10 maximum number of raft log file
_shard_native_repl_rf5 FALSE SNR parameter to enable RF=5
_shard_raft_log_retention_time_mins Raft log retention time in minutes
_shard_raft_logfile_blksize 4096 SNR default logfile block size
_shard_raft_partial_copy_block_count 256 number of blocks to read/write during partial copy
_shard_raft_write_timeout 100000 io timeout before a follower write forced in us
_shard_reco_txn_test_mode 0 shard txn recovery test mode
_shard_repl_enable_xa FALSE SNR enable XA transactions
_shard_repl_max_iobuf 256 max number of snr io buffers
_shard_repl_queue_wait_us 1000 shard repl queue wait times in microseconds
_shard_size_lcrs_per_transaction 100000 number of lcrs per SNR transaction
_shard_sql_use_chunk_ids 0 Shard SQL use chunk ids
_shard_test_compatible override compatible value for testing
_shard_test_knclp_cap 0 override knclp_cap value for testing
_shardgroup_name gsm shardgroup name
_sharding_lockdown FALSE Oracle internal parameter
_shardspace_name gsm shardspace name
_share_drcp_proxy_sessions TRUE Enable Disable Proxy Session Sharing DRCP
_shared_io_pool_buf_size 1048576 Shared IO pool buffer size
_shared_io_pool_debug_trc 0 trace kcbi debug info to tracefile
_shared_io_pool_size 0 Size of shared IO pool
_shared_io_set_value FALSE shared io pool size set internal value - overwrite zero user size
_shared_iop_max_size 134217728 maximum shared io pool size
_shared_pool_lru_bufs 200 shared pool lru effort buffer size
_shared_pool_max_size 0 shared pool maximum size when auto SGA enabled
_shared_pool_max_sz 0
_shared_pool_minsize_on FALSE shared pool minimum size when auto SGA enabled
_shared_pool_reserved_min_alloc 4400 minimum allocation size in bytes for reserved area of shared pool
_shared_pool_reserved_pct 7 percentage memory of the shared pool allocated for the reserved area
_shared_server_load_balance 0 shared server load balance
_shared_server_num_queues 2 number of shared server common queues
_shared_server_sizing_coeff 1000 Shared server sizing coefficient
_shared_servers_performance 0 Tradeoff shared servers resource usage for performance
_shared_spfile_check parameter to validate shared spfile
_shd_atomic_move 0 Use atomic move
_shd_reptype 0 replication type of the databse and pool
_shmprotect 0 allow mprotect use for shared memory
_short_stack_timeout_ms 30000 short stack timeout in ms
_show_login_pdb_sessions FALSE return logon pdb container id from v$session
_shrd_que_tm_processes 1 number of sharded queue Time Managers to start
_shrd_que_tm_statistics_duration 0 Shaded queue statistics collection window duration
_shrunk_aggs_disable_threshold 60 percentage of exceptions at which to switch to full length aggs
_shrunk_aggs_enabled TRUE enable use of variable sized buffers for non-distinct aggregates
_shutdown_abort_detach_wait_msec 3000 Max wait time for processes to detach from SGA at shutdown
_shutdown_abort_timeout_mins 0 minutes for shutdown operation to wait for completion before initiatin
_shutdown_completion_timeout_mins 60 minutes for shutdown operation to wait for sessions to complete before
_shutdown_immediate_timeout 3600 seconds before killing sessions for shutdown immediate
_shutdown_sync_enable TRUE if TRUE, shutdown sync is issued before shutdown normal
_side_channel_batch_size 240 number of messages to batch in a side channel message (DFS)
_side_channel_batch_timeout 6 timeout before shipping out the batched side channelmessages in second
_side_channel_batch_timeout_ms 500 timeout before shipping out the batched side channelmessages in millis
_simple_view_merging TRUE control simple view merging performed by the optimizer
_simulate_dax_storage DISABLE Simulate log on DAX storage
_simulate_disk_sectorsize 0 Enables skgfr to report simulated physical disk sector size
_simulate_io_wait 0 Simulate I/O wait to test segment advisor
_simulate_logical_sectorsize 0 Enables skgfr to report simulated logical disk sector size
_simulate_mem_transfer FALSE simulate auto memory sga/pga transfers
_simulated_log_write_usecs 0 Simulated latency of log writes (usecs)
_simulator_bucket_mindelta 8192 LRU bucket minimum delta
_simulator_internal_bound 10 simulator internal bound percent
_simulator_lru_rebalance_sizthr 5 LRU list rebalance threshold (size)
_simulator_lru_rebalance_thresh 10240 LRU list rebalance threshold (count)
_simulator_lru_scan_count 8 LRU scan count
_simulator_pin_inval_maxcnt 16 maximum count of invalid chunks on pin list
_simulator_reserved_heap_count 4096 simulator reserved heap count
_simulator_reserved_obj_count 1024 simulator reserved object count
_simulator_sampling_factor 2 sampling factor for the simulator
_simulator_upper_bound_multiple 2 upper bound multiple of pool size
_single_process FALSE run without detached processes
_singleton_service_goodness_disabled TRUE singleton srvc goodness
_siop_flashback_scandepth 20 Shared IO pool flashback io completion scan depth
_siop_init_mem_gradually TRUE will cause shared io pool in small chunks
_siop_perc_of_bc_x100 625 percentange * 100 of cache to transfer to shared io pool
_sixteenth_spare_parameter sixteenth spare parameter - integer
_sixteenth_spare_pdb_parameter sixteenth spare pdb parameter - integer
_sixth_spare_parameter sixth spare parameter - integer
_sixth_spare_pdb_parameter sixth spare pdb parameter - integer
_sixtieth_spare_parameter sixtieth spare parameter - integer
_sixtieth_spare_pdb_parameter sixtieth spare pdb parameter - boolean
_sixty-eighth_spare_parameter sixty-eighth spare parameter - integer
_sixty-eighth_spare_pdb_parameter sixty-eighth spare pdb parameter - boolean
_sixty-fifth_spare_parameter sixty-fifth spare parameter - integer
_sixty-fifth_spare_pdb_parameter sixty-fifth spare pdb parameter - boolean
_sixty-first_spare_parameter sixty-first spare parameter - integer
_sixty-first_spare_pdb_parameter sixty-first spare pdb parameter - boolean
_sixty-fourth_spare_parameter sixty-fourth spare parameter - integer
_sixty-fourth_spare_pdb_parameter sixty-fourth spare pdb parameter - boolean
_sixty-ninth_spare_parameter sixty-ninth spare parameter - integer
_sixty-ninth_spare_pdb_parameter sixty-ninth spare pdb parameter - boolean
_sixty-second_spare_parameter sixty-second spare parameter - integer
_sixty-second_spare_pdb_parameter sixty-second spare pdb parameter - boolean
_sixty-seventh_spare_parameter sixty-seventh spare parameter - integer
_sixty-seventh_spare_pdb_parameter sixty-seventh spare pdb parameter - boolean
_sixty-sixth_spare_parameter sixty-sixth spare parameter - integer
_sixty-sixth_spare_pdb_parameter sixty-sixth spare pdb parameter - boolean
_sixty-third_spare_parameter sixty-third spare parameter - integer
_sixty-third_spare_pdb_parameter sixty-third spare pdb parameter - boolean
_size_of_log_table 100 modifying this hidden parameter, will modify the sizeof the v$gcr_log
_skgxp_ant_options SKGXP ANT options (oss)
_skgxp_ctx_flags1 0 IPC debug options flags (oss)
_skgxp_ctx_flags1mask 0 IPC debug options flags mask (oss)
_skgxp_dynamic_protocol 0 IPC protocol override (!0/-1=*,2=UDP,3=RDS,0x1000=ipc_X)
_skgxp_gen_ant_off_rpc_timeout_in_sec 30 VRPC request timeout when ANT disabled
_skgxp_gen_ant_ping_misscount 3 ANT protocol ping miss count
_skgxp_gen_rpc_no_path_check_in_sec 5 ANT ping protocol miss count
_skgxp_gen_rpc_timeout_in_sec 300 VRPC request timeout when ANT enabled
_skgxp_inets limit SKGXP networks (oss)
_skgxp_min_rpc_rcv_zcpy_len 0 IPC threshold for rpc rcv zcpy operation (default = 0 - disabled)
_skgxp_min_zcpy_len 0 IPC threshold for zcpy operation (default = 0 - disabled)
_skgxp_reaping 1000 tune skgxp OSD reaping limit
_skgxp_rgn_ports 0 region socket limits (0xFFFFNNXX): F=flags, N=min, X=max
_skgxp_spare_param1 ipc oss spare parameter 1
_skgxp_spare_param2 ipc oss spare parameter 2
_skgxp_spare_param3 ipc oss spare parameter 3
_skgxp_spare_param4 ipc oss spare parameter 4
_skgxp_spare_param5 ipc oss spare parameter 5
_skgxp_udp_ach_reaping_time 120 time in minutes before idle ach's are reaped
_skgxp_udp_ack_delay 0 Enables delayed acks
_skgxp_udp_enable_dynamic_credit_mgmt 0 Enables dynamic credit management
_skgxp_udp_hiwat_warn 1000 ach hiwat mark warning interval
_skgxp_udp_interface_detection_time_secs 60 time in seconds between interface detection checks
_skgxp_udp_keep_alive_ping_timer_secs 300 connection idle time in seconds before keep alive is initiated. min: 3
_skgxp_udp_lmp_mtusize 0 MTU size for UDP LMP testing
_skgxp_udp_lmp_on FALSE enable UDP long message protection
_skgxp_udp_timed_wait_buffering 1024 diagnostic log buffering space (in bytes) for timed wait (0 means unbu
_skgxp_udp_timed_wait_seconds 5 time in seconds before timed wait is invoked
_skgxp_udp_use_tcb TRUE disable use of high speek timer
_skgxp_zcpy_flags 0 IPC zcpy options flags
_skgxpg_last_parameter 27 last defined skgxpg parameter - oss
_skip_acfs_checks FALSE Override checking if on an ACFS file system
_skip_adding_plsql_negative_dep FALSE If enabled then skip adding plsql negative dependency
_skip_app_object_check FALSE Skip application object checks
_skip_app_unconverted_check FALSE Skip application unconverted check
_skip_assume_msg TRUE if TRUE, skip assume message for consigns at the director
_skip_cursor_syspriv_rechecks FALSE skip re-authorization of session cached cursors
_skip_fixed_dependency_load_during_drop FALSE skip load of fixed object dependency during drop
_skip_multiple_svc_netname_convert_patterns FALSE skip apply multiple patterns on a network name during serv
_skip_oradism_check FALSE Switch on all features for the purpose of testing
_skip_pdb_ddl_replay FALSE Skip Common DDL replay
_skip_pdb_recovery_if_keystore_not_open FALSE Skip PDB recovery when the PDB's keystore is not open
_skip_pdbid PDBIDs to be skipped during init of kpdblist from control file
_skip_pset_col_chk 0 skip validation of partition set keys in DML
_skip_sequence_cache_close_immediate FALSE Skip sequence cache flush on pdb shutdown immediate
_skip_trstamp_check TRUE Skip terminal recovery stamp check
_skip_unconverted_change_vector FALSE Skip apply of a CV that has no endian conversion function
_skip_upg_prechecks_on_pdb_open FALSE Skip upgrade prechecks on PDB open
_skip_view_dependent_invalidation FALSE Skip dependent object invalidation for view
_skippriv_emailserver_credential FALSE Skip execute privilege check on scheduler email server credential
_slave_mapping_enabled TRUE enable slave mapping when TRUE
_slave_mapping_group_size 0 force the number of slave group in a slave mapper
_slave_mapping_skew_handling TRUE enables skew handling for slave mapping plans
_slave_mapping_skew_ratio 2 maximum skew before slave mapping is disabled
_slow_kill_on_pdb_close_immediate FALSE Kill sessions gradually on pdb close immediate
_slow_kill_rate_on_pdb_close_immediate 5 Rate of killing sessions gradually on pdb close immediate
_small_table_threshold 12335 lower threshold level of table size for direct reads
_smart_scan_object_size_threshold 100 lower threshold of object size in MB for smartscan offload
_smm_advice_enabled TRUE if TRUE, enable v$pga_advice
_smm_advice_log_size 0 overwrites default size of the PGA advice workarea history log
_smm_auto_cost_enabled TRUE if TRUE, use the AUTO size policy cost functions
_smm_auto_max_io_size 248 Maximum IO size (in KB) used by sort/hash-join in auto mode
_smm_auto_min_io_size 56 Minimum IO size (in KB) used by sort/hash-join in auto mode
_smm_bound 0 overwrites memory manager automatically computed bound
_smm_control 0 provides controls on the memory manager
_smm_freeable_retain 5120 value in KB of the instance freeable PGA memory to retain
_smm_isort_cap 102400 maximum work area for insertion sort(v1)
_smm_low_mem_bound_diag_threshold 0 low memory bound threshold to trigger diagnostic dump
_smm_max_size 243090 maximum work area size in auto mode (serial)
_smm_max_size_static 243090 static maximum work area size in auto mode (serial)
_smm_min_size 1024 minimum work area size in auto mode
_smm_px_max_size 1215488 maximum work area size in auto mode (global)
_smm_px_max_size_static 1215488 static maximum work area size in auto mode (global)
_smm_retain_size 0 work area retain size in SGA for shared server sessions (0 for AUTO)
_smm_trace 0 Turn on/off tracing for SQL memory manager
_smon_internal_errlimit 100 limit of SMON internal errors
_smon_ofd_sleep_interval 300 smon sleep internval for undo ofd test
_smon_sort_management 0 Control SMON or SMCO process sort segment management message
_smon_undo_seg_rescan_limit 10 limit of SMON continous undo segments re-scan
_smtp_auth_failure_logging FALSE Cloud Logging of SMTP Authentication Failures
_smtp_usage_disallowed_users List of users disallowed from using UTL_SMTP inside the PDB
_smu_debug_mode 0 <debug-flag> - set debug event for testing SMU operations
_smu_error_simulation_site 0 site ID of error simulation in KTU code
_smu_error_simulation_type 0 error type for error simulation in KTU code
_smu_timeouts comma-separated *AND double-quoted* list of AUM timeouts: mql, tur, se
_snapshot_recovery_enabled TRUE enable/disable snapshot recovery
_so_percent_lower_bound_final 80 SO percent lower bound final
_so_percent_lower_bound_strt 60 SO percent lower bound start
_so_percent_upper_bound_final 90 SO percent upper bound final
_so_percent_upper_bound_strt 70 SO percent upper bound start
_sort_elimination_cost_ratio 0 cost ratio for sort eimination under first_rows mode
_sort_multiblock_read_count 2 multi-block read count for sort
_sort_spill_threshold 0 force sort to spill to disk each time this many rows are received
_sort_sync_min_spill_threshold 90 controls the mininum spill size for synchronized spill (in percent)
_sort_sync_min_spillsize 262144 controls the size of mininum run size for synchronized spill (in kb)
_space_align_size 1048576 space align size
_space_diag_test 0 Exercise space management diagnostics
_space_objd_mismatch 1 Control objd mismatch diagnostics
_spacebg_sync_segblocks TRUE to enable/disable segmon driver
_spacereuse_track_memlimit 10 Percentage of shared pool for use by spacereuse tracking
_spadr NO _SPADR
_spare_ksp_ktucts1 0 spare duality view directive ksp parameter
_spare_test_parameter 0 Spare test parameter
_sparse_backing_file AVM specifies sparse backing file
_spawn_diag_opts 0 thread spawn diagnostic options
_spawn_diag_thresh_secs 30 thread spawn diagnostic minimal threshold in seconds
_spec_replace_locks_body TRUE Lock body when replacing a package specification
_spfdc OFF SPFDC
_spfei SPFEI
_spfile_comment_validation_mode DISABLE Validate parameter comment format
_spfoc OFF SPFOC
_spin_count 2000 Amount to spin waiting for a latch
_split_app_current_state TRUE Use _CURRENT_STATE_CDB object to sync CDB-wide apps
_split_file_copy TRUE Enable block-level parallelism for file copy in Create PDB
_split_partition_target_timeout 600 set splitpartitionset wait timeout
_spr_max_rules 10000 maximum number of rules in sql spreadsheet
_spr_push_pred_refspr TRUE push predicates through reference spreadsheet
_spr_use_AW_AS TRUE enable AW for hash table in spreadsheet
_sql_alias_scope TRUE Use only SQL name resolution for a column whose alias matches that of
_sql_analysis TRUE enable SQL analysis for reporting in plan
_sql_analyze_enable_auto_txn FALSE SQL Analyze Autonomous Transaction control parameter
_sql_analyze_parse_model 2 SQL Analyze Parse Model control parameter
_sql_compatibility 0 sql compatability bit vector
_sql_connect_capability_override 0 SQL Connect Capability Table Override
_sql_connect_capability_table SQL Connect Capability Table (testing only)
_sql_diag_repo_origin all duarations where sql diag repository are retained
_sql_diag_repo_retain retain sql diag repository to cursor or not
_sql_error_mitigation_control 0 internal controls for auto error mitigation
_sql_error_mitigation_patch_ems_threshold 2 Threshold of upgrading from EMS to FMS patches
_sql_error_mitigation_patch_validation_interval 30 Minimum interval (days) to revalidate auto SQL patches
_sql_error_mitigation_repeat_wait 86400 minimum wait time (seconds) between repeated mitigations
_sql_error_mitigation_retention 53 Auto error mitigation diagnostic tables retention period (weeks)
_sql_error_mitigation_time_limit 600 maximum time limit (seconds) for error mitigation
_sql_hash_debug 0 Hash value of the SQL statement to debug
_sql_history_buffers 50 Min number of sql query history buffers to be monitored
_sql_hvshare_debug 1 control hash value sharing debug level
_sql_hvshare_threshold 0 threshold to control hash value sharing across operators
_sql_model_unfold_forloops RUN_TIME specifies compile-time unfolding of sql model forloops
_sql_ncg_mode OFF Optimization mode for SQL NCG
_sql_plan_directive_mgmt_control 67 controls internal SQL Plan Directive management activities
_sql_plan_management_comp_metric 3 controls metric used in comparing performance of plans in SPM
_sql_plan_management_control 0 controls various internal SQL Plan Management algorithms
_sql_show_expreval FALSE show expression evalution as shared hash producer in plan
_sqlexec_aggregation_settings 0 runtime settings for aggregation
_sqlexec_bitmap_options 0 settings for bitmap count distinct optimizations
_sqlexec_bitmap_sparse_size 100 maximum number of sparse bitmap values
_sqlexec_cache_aware_hash_aggr_enabled TRUE enable/disable cache aware hash aggregation
_sqlexec_cache_aware_hash_join_enabled TRUE enable/disable cache aware hash join
_sqlexec_disable_hash_based_distagg_tiv FALSE disable hash based distinct aggregation in TIV for gby queries
_sqlexec_distagg_optimization_settings 0 settings for distinct aggregation optimizations
_sqlexec_encoding_aware_hj_enabled TRUE enable/disable encoding aware hash join
_sqlexec_encoding_aware_hj_min_compression_ratio 8 minimum compression ratio to leverage encoding for HJ probe
_sqlexec_hash_aggr_small_mem_blocks 2 hash aggregation small initial memory footprint number of blocks
_sqlexec_hash_based_distagg_enabled TRUE enable hash based distinct aggregation for gby queries
_sqlexec_hash_based_distagg_ser_civ_enabled TRUE enable hash based distinct aggregation in serial/CIV queries
_sqlexec_hash_based_distagg_ssf_enabled TRUE enable hash based distinct aggregation for single set gby queries
_sqlexec_hash_based_set_operation_enabled TRUE enable/disable hash based set operation
_sqlexec_hash_join_uses_xmem FALSE enable/disable xmem PGA for hash join areas
_sqlexec_hash_rollup_enabled TRUE enable hash rollup
_sqlexec_join_group_aware_hj_enabled TRUE enable/disable join group aware hash join
_sqlexec_join_group_aware_hj_unencoded_rowsets_tol 50 minimum number of unencoded rowsets processed before adaptation
erated
_sqlexec_pwiseops_with_binds_enabled TRUE enable partition wise execution in the presence of bind variables in i
_sqlexec_pwiseops_with_sqlfuncs_enabled TRUE enables partition wise operations even in the presence of functions ov
_sqlexec_reorder_wif_enabled TRUE enable re-ordering of window functions
_sqlexec_sort_uses_xmem TRUE enable/disable xmem PGA for sort areas
_sqlexec_use_delayed_unpacking TRUE enable/disable the usage of delayed unpacking
_sqlexec_use_kgghash3 TRUE use CRC-based hash function
_sqlexec_use_rwo_aware_expr_analysis TRUE enable/disable the usage of row vector aware expression analysis
_sqlexec_window_function_settings 63 execution settings for window functions
_sqlmon_all_rows_numpdb_threshold 10 Return 100% of rows if active PDB count is below this cutoff.
_sqlmon_binds_xml_format default format of column binds_xml in [G]V$SQL_MONITOR
_sqlmon_conitr_row_cache_size 50 Cache size for rows from keomnRefreshCacheFromPdbSwitchCbk()
_sqlmon_entry_cutoff_end_time 0 Cutoff end time offset (in seconds) for monitored entries during scan
_sqlmon_entry_cutoff_start_time 3600 Cutoff start time offset (in seconds) for monitored entries during sca
_sqlmon_max_active_idle 0 Time (in sec) after which a SQL Monitor entry can be reclaimed
_sqlmon_max_plan 80 Maximum number of plans entry that can be monitored. Defaults to 20 pe
_sqlmon_max_planlines 1000 Number of plan lines beyond which a plan cannot be monitored
_sqlmon_max_recent_rows_per_pdb 0 Max rows fetched from PDB during scan of [G]V$RECENT_SQL_MONITOR
_sqlmon_recent_query_max_time 2 Time limit for CDB-optimized scan of [G]V$RECENT_SQL_MONITOR
_sqlmon_recycle_time 5 Minimum time (in s) to wait before a plan entry can be recycled
_sqlmon_threshold 5 CPU/IO time threshold before a statement is monitored. 0 is disabled
_sqlset_hash_max_size 100000 Max size of hash table used when loading into a SQL set
_sqltune_category_parsed DEFAULT Parsed category qualifier for applying hintsets
_srvntfn_job_deq_timeout 60 srvntfn job deq timeout
_srvntfn_jobsubmit_interval 3 srvntfn job submit interval
_srvntfn_max_concurrent_jobs 20 srvntfn max concurrent jobs
_srvntfn_max_job_time 180 srvntfn max time per job
_srvntfn_q_msgcount 50 srvntfn q msg count for job exit
_srvntfn_q_msgcount_inc 100 srvntfn q msg count increase for job submit
_sscr_dir Session State Capture and Restore DIRectory object
_sscr_osdir Session State Capture and Restore OS DIRectory
_sta_control 0 SQL Tuning Advisory control parameter
_stack_guard_level 0 stack guard level
_standard_varchar_storage FALSE controls storage format for extended VARCHAR2 and NVARCHAR2 data type
_standby_auto_flashback TRUE Standby automatic flashback when primary flashed back
_standby_causal_heartbeat_timeout 2 readable standby causal heartbeat timeout
_standby_flush_mode SLFLUSH standby flush mode
_standby_implicit_rcv_timeout 3 minutes to wait for redo during standby implicit recovery
_standby_newkey_keystore_location Location of keystore on standby having new key
_standby_switchover_timeout 120 Number of secords for standby switchover enqueue timeout
_standby_temp_file_management AUTO tempfile management on standby databases
_start_service_on_logon TRUE Start tp or tpurgent service on logging into pdb in ADBS
_stat_aggs_one_pass_algorithm FALSE enable one pass algorithm for variance-related functions
_statement_redirect_host statement redirect host
_statement_redirect_routing_function statement redirect routing function
_static_backgrounds static backgrounds
_statistics_based_srf_enabled TRUE enable/disable the use of statistics for storage reduction factor
_stats_encryption_enabled FALSE Enable statistics encryption on sensitive data
_step_down_limit_in_pct 20 step down limit in percentage
_streams_pool_max_size 0 streams pool maximum size when auto SGA enabled
_strict_dml_data_link FALSE Enable strict semantics for DML into [Extended] Data Link
_strict_redaction_semantics TRUE Strict Data Redaction semantics
_strict_utl_http_smtp FALSE Enforce strict URL checks on UTL_HTTP and UTL_SMTP Packages
_subname_for_object_patching subname used to create a duplicate object for patching
_subquery_pruning_cost_factor 20 subquery pruning cost factor
_subquery_pruning_enabled TRUE enable the use of subquery predicates to perform pruning
_subquery_pruning_flags 0 subquery pruning flags
_subquery_pruning_mv_enabled FALSE enable the use of subquery predicates with MVs to perform pruning
_subquery_pruning_reduction 50 subquery pruning reduction factor
_subseg_debug 0 KTSV Subseg Debug
_subseg_key 0 KTSV Subseg Key
_subseg_kotscan 0 KTSV Subseg Key Organized Table SCAN
_subseg_quiesce_threshold 10240 KTSV threshold size for loading to new subseg in MB
_suffix_for_object_patching suffix used to create a duplicate object for patching
_super_shared_conversion_threshold 320 conversion threshold limit for supershared mode
_super_shared_enable FALSE enable super shared mode for latches
_super_shared_max_exclusive_conversions 4 Maximum consecutive exclusive conversions to convert a super shared la
_suppress_identifiers_on_dupkey FALSE supress owner index name err msg
_suppress_migration_errors TRUE Suppress migration errors during Application Sync
_suppress_pg_population FALSE If true, all graph populations are suppressed
_suspend_4031_timeout 14400 sga timeout in seconds for 4031
_suspend_4036_timeout 14400 pga timeout in seconds for 4036
_suspended_session_timeout 300 Timeout to kill suspended sess aft switchover
_sv_waiters_cap 4294967294 max. amount of waiters allowed per enhancement.
_swat_ver_mv_knob 0 Knob to control MV/REWRITE behavior
_switch_current_scan_scn TRUE switch current uses scan scn
_switchover_through_cascade TRUE Enable switchover through farsync
_switchover_timeout 0 Switchover timeout in minutes
_switchover_to_standby_option OPEN_ALL_IGNORE_SESS option for graceful switchover to standby
IONS
_switchover_to_standby_switch_log FALSE Switchover to standby switches log for open redo threads
_swrf_metric_frequent_mode FALSE Enable/disable SWRF Metric Frequent Mode Collection
_swrf_mmon_dbfus TRUE Enable/disable SWRF MMON DB Feature Usage
_swrf_mmon_flush TRUE Enable/disable SWRF MMON FLushing
_swrf_mmon_metrics TRUE Enable/disable SWRF MMON Metrics Collection
_swrf_on_disk_enabled TRUE Parameter to enable/disable SWRF
_swrf_test_action 0 test action parameter for SWRF
_swrf_test_dbfus FALSE Enable/disable DB Feature Usage Testing
_symbol_no_translation FALSE disable symbol tranlations in call stacks
_sync_app_pdb_first_open FALSE sync application PDB automatically on first open
_sync_error_handler error handler function for Application Sync
_sync_primary_wait_time 5 wait time for alter session sync with primary
_synchronous_rewrap_rac_ts_keys FALSE if TRUE, synchronously rewrap TS keys in all nodes in MK rekey
_synonym_repoint_tracing FALSE whether to trace metadata comparisons for synonym repointing
_sys_logon_delay 1 The failed logon delay for the database instance
_sysaux_test_param 1 test parameter for SYSAUX
_system_api_interception_debug FALSE enable debug tracing for system api interception
_system_index_caching 0 optimizer percent system index caching
_system_memory_simulate FALSE system memory simulation mode, TRUE for hugetlbfs simulation
_system_parse_limit_seconds 120 System cursor parse time limit (seconds)
_system_partition_with_default FALSE allow default partition for system partitioned tables
_system_state_cputime_limit 4294967294 cputime limit for system state dump
_system_state_runtime_limit 4294967294 runtime limit for system state dump
_system_trig_enabled TRUE are system triggers enabled
_tabdict_background_update TRUE enable tabdict update in the background
_table_cache_data_share FALSE Table Cache for Data Share
_table_func_pred_pushdown FALSE enable table function predicate pushdown
_table_lookup_prefetch_size 40 table lookup prefetch vector size
_table_lookup_prefetch_thresh 2 table lookup prefetch threshold
_table_scan_cost_plus_one TRUE bump estimated full table scan and index ffs cost by one
_tablespaces_per_transaction 10 estimated number of tablespaces manipulated by each transaction
_target_action_name list of Target Action Names
_target_log_write_size 0 Write size (in blocks) for overlapped redo writes
_target_log_write_size_percent_for_poke 100 Ask LGWR to write if strand has this % of target write size blocks
_target_log_write_size_spinwait 0 Use a spin wait and not a sleep in waiting for target write size
_target_log_write_size_timeout 0 Maximum timeout (msecs) to wait for overlapped redo writes
_target_module_name list of Target Module Names
_target_offload FALSE enable target offload functionality
_target_offload_algorithm random algorithm for choosing target for offload
_target_offload_pdb target pdb ocid for offload
_target_offload_svcpattern target svc pattern for offload
_target_rba_max_lag_percentage 81 target rba max log lag percentage
_tcpinfo_statistics_save_atexit FALSE TCP Info Statistics Save At Exit
_tdb_debug_mode 16 set debug mode for testing transportable database
_temp_tran_block_threshold 100 number of blocks for a dimension before we temp transform
_temp_tran_cache TRUE determines if temp table is created with cache option
_temp_undo_disable_adg FALSE is temp undo disabled on ADG
_temp_undo_disable_refresh_clone FALSE is temp undo disabled on refreshable clone PDB
_temp_undo_optimal_extents 0 optimal number of extents for temp undo
_tempfile_monitor_interval 3600 tempfile monitor interval in seconds
_tempspace_prereuse_exts 1024 minimum temp extents to reuse/steal proactively
_tempspace_tsenq_timeout 600 amount of time(in seconds) to wait for acquiring TS enq
_tenth_spare_parameter tenth spare parameter - integer
_tenth_spare_pdb_parameter tenth spare pdb parameter - integer
_test_flashback_shrink 0 test flashback datafile shrink feature
_test_hm_extent_map FALSE heatmap related - to be used by oracle dev only
_test_ksusigskip 5 test the function ksusigskip
_test_offload_pdb_sga_init FALSE Test offload of PDB SGA creation
_test_param_1 25 test parmeter 1 - integer
_test_param_10 test parameter 10 - string param
_test_param_10_bi 10 test parameter 10 - bigint param
_test_param_10_i test parameter 10 - int param
_test_param_11_base 3 test parameter 11 base
_test_param_11_dep 0_STARTUP, 1_STARTUP test parameter 11 dependent
, 2_STARTUP
_test_param_12 0 test parameter 12 - int param
_test_param_13 FALSE test parmeter 13 - boolean
_test_param_14 test parmeter 14 - string list
_test_param_15 50 test parmeter 15 - integer
_test_param_16 500 test parmeter 16 - integer
_test_param_17 0 test parmeter 17 - integer - NOUSRMOD
_test_param_2 test parameter 2 - string
_test_param_3 test parameter 3 - string
_test_param_4 test parameter 4 - string list
_test_param_4_1 test parameter 4_1 - nonsys mod. string list
_test_param_5 25 test parmeter 5 - deprecated integer
_test_param_6 0 test parmeter 6 - size (ub8)
_test_param_7 100, 1100, 2100, 310 test parameter 7 - big integer list
0, 4100
_test_param_8 20 test parameter 8 - cdb tests
_test_param_9 test parameter 9 - umbrella param
_test_param_9_1 0 test parameter 9_1 - cascade param1
_test_param_9_2 0_startup test parameter 9_2 - cascade param2
_test_param_9_3 1_startup, 2_startup test parameter 9_3 - cascade param3
, 3_startup
_test_param_pdb_spare test parameter pdb spare
_test_param_spare test parameter spare
_test_trans_hnsw_vector_scan FALSE Test Parameter for kdivs transaction tests
_test_trans_hnsw_vector_scan_user_id 0 Test Parameter for kdivs transaction tests
_test_xmem_alloc_size 0 unit test xmem alloc size
_text_batch_num 32 Text number of batches
_text_batch_size 8 Text batch size in Mb
_text_datastore_access FALSE Oracle Text alternate datastore default settings
_text_estat_purge 30 Text event stats purge interval in days
_text_event_sizing 3 Text event sizing level
_text_maintenance auto Text default maintenance setting
_tgtt_single_segment FALSE Whether to use single segment for trans GTTs
_third_spare_parameter third spare parameter - integer
_third_spare_pdb_parameter third spare pdb parameter - integer
_thirteenth_spare_parameter thirteenth spare parameter - integer
_thirteenth_spare_pdb_parameter thirteenth spare pdb parameter - integer
_thirtieth_spare_parameter thirtieth spare parameter - integer
_thirtieth_spare_pdb_parameter thirtieth spare pdb parameter - string
_thirty-eighth_spare_parameter thirty-eighth spare parameter - integer
_thirty-eighth_spare_pdb_parameter thirty-eighth spare pdb parameter - string
_thirty-fifth_spare_parameter thirty-fifth spare parameter - integer
_thirty-fifth_spare_pdb_parameter thirty-fifth spare pdb parameter - string
_thirty-first_spare_parameter thirty-first spare parameter - integer
_thirty-first_spare_pdb_parameter thirty-first spare pdb parameter - string
_thirty-fourth_spare_parameter thirty-fourth spare parameter - integer
_thirty-fourth_spare_pdb_parameter thirty-fourth spare pdb parameter - string
_thirty-ninth_spare_parameter thirty-ninth spare parameter - integer
_thirty-ninth_spare_pdb_parameter thirty-ninth spare pdb parameter - string
_thirty-second_spare_parameter thirty-second spare parameter - integer
_thirty-second_spare_pdb_parameter thirty-second spare pdb parameter - string
_thirty-seventh_spare_parameter thirty-seventh spare parameter - integer
_thirty-seventh_spare_pdb_parameter thirty-seventh spare pdb parameter - string
_thirty-sixth_spare_parameter thirty-sixth spare parameter - integer
_thirty-sixth_spare_pdb_parameter thirty-sixth spare pdb parameter - string
_thirty-third_spare_parameter thirty-third spare parameter - integer
_thirty-third_spare_pdb_parameter thirty-third spare pdb parameter - string
_thread_state_change_timeout_pnp 1800 Thread state change timeout for PnP instance (in sec)
_threaded_execution FALSE Threaded Execution Mode Internal
_threshold_alerts_enable 1 if 1, issue threshold-based alerts
_time_based_rcv_ckpt_target 180 time-based incremental recovery checkpoint target in sec
_time_based_rcv_hdr_update_interval 180 time-based incremental recovery file header update interval in sec
_time_threshold_to_reboot_mmon_slv 86400 Time threshold to reboot MMON slave processes
_timemodel_collection TRUE enable timemodel collection
_timeout_actions_enabled TRUE enables or disables KSU timeout actions
_timer_precision 10 VKTM timer precision in milli-sec
_timetravel_lwscn_check_override FALSE override low water mark scn comparision
_tkh_in_fsc_per_ts 5 Max tkh records stored in FSC per table space
_total_large_extent_memory 0 Total memory for allocating large extents
_touch_sga_pages_during_allocation FALSE touch SGA pages during allocation
_tq_dump_period 0 time period for duping of TQ statistics (s)
_trace_buffer_wait_timeouts 0 trace buffer busy wait timeouts
_trace_buffers ALL:256 trace buffer sizes per process
_trace_dump_all_procs FALSE if TRUE on error buckets of all processes will be dumped to the curren
_trace_dump_client_buckets TRUE if TRUE dump client (ie. non-kst) buckets
_trace_dump_cur_proc_only FALSE if TRUE on error just dump our process bucket
_trace_dump_static_only FALSE if TRUE filter trace dumps to always loaded dlls
_trace_events trace events enabled at startup
_trace_files_public FALSE Create publicly accessible trace files
_trace_kqlidp FALSE trace kqlidp0 operation
_trace_ktds FALSE Trace block reuse
_trace_ktfs FALSE Trace ILM Stats Tracking
_trace_ktfs_mem FALSE Debug memleak
_trace_logging_from_root FALSE true if object store write is allowed from root
_trace_logging_uri object store uri where trace is uploaded
_trace_navigation_scope global enabling trace navigation linking
_trace_pin_time FALSE trace how long a current pin is held
_trace_pool_size trace pool size in bytes
_trace_processes ALL enable KST tracing in process
_trace_suppress suppresses matching trace for a given substring(prefix)
_trace_suppress_disable FALSE Disable trace suppress feature
_trace_temp FALSE Trace Tempspace Management
_trace_virtual_columns FALSE trace virtual columns exprs
_track_app_list List of applications to track statement level replay timing
_track_app_sync FALSE Track statement level sync timing for this PDB
_track_metrics_memory TRUE Enable/disable Metrics Memory Tracking
_track_space_reuse FALSE SpaceReuse Tracking
_track_space_reuse_rac FALSE SpaceReuse Tracking Enable in RAC
_transaction_auditing TRUE transaction auditing records generated in the redo log
_transaction_recovery_servers 0 max number of parallel recovery slaves that may be used
_transient_logical_clear_hold_mrp_bit FALSE clear KCCDI2HMRP flag during standby recovery
_true_cache_aff_hash_latches 16 True Cache affinity table latches
_true_cache_block_fetch_abort_timeout 20000 True Cache block fetch abort time out in centiseconds
_true_cache_block_fetch_latency_histogram TRUE Enable True Cache block fetch latency histogram
_true_cache_block_fetch_latency_limit 5000 True Cache block fetch latency in usec considered too large
_true_cache_block_fetch_latency_trace FALSE Enable True Cache block fetch latency trace
_true_cache_block_fetch_timeout 300 True Cache block fetch time out in centiseconds
_true_cache_chore_mask 3 True Cache health chore mask
_true_cache_dest True Cache destinations server list
_true_cache_disable_caps 0 True Cache disabled capabilities mask
_true_cache_disc_time 86400 True Cache disconnect time
_true_cache_fault_tolerance_degree HIGH True Cache Fault tolerance degree
_true_cache_flt_dict_lmt 350 True Cache Fault tolerance dictionary prefetch limit
_true_cache_flt_max_cache_threshold_percent 10 True Cache max percent of pool size upto which fault tolerance can cac
_true_cache_flt_min_cache_threshold_percent 5 True Cache minimum percent of pool size that fault tolerance can cache
_true_cache_flt_min_db_cache_sz 3221225472 True Cache minimum db_cache_size for HA mode to kick in
_true_cache_flt_min_sga_tgt 0 True Cache minimum sga_target for HA mode to kick in
_true_cache_flt_minactscn_apply 1 True Cache Fault tolerance minact scn applicability
_true_cache_flt_tracing 0 True Cache Fault tolerance tracing and debugging
_true_cache_heartbeat_interval 60 True Cache heartbeat interval
_true_cache_lad_max_failure 20 True Cache max LAD failures
_true_cache_lad_nettimeout 30 True Cache LAD net timeout time
_true_cache_lad_reopen 15 True Cache LAD reopen time
_true_cache_latch_less_htab FALSE Latchless affinity hash table access
_true_cache_link_object_queue FALSE True Cache to link buffers to object queue or not
_true_cache_max_block_fetch_requests 1024 True Cache maximum outstanding block fetch requests
_true_cache_max_payload 1048576 True Cache max batch payload size
_true_cache_max_unapplied_logs 10 True Cache max unapplied log files
_true_cache_num_batch_requests 4 True Cache number of request to batch
_true_cache_num_dsndr_process 1 True Cache number of data send process
_true_cache_num_fch_process 1 True Cache number of data request process
_true_cache_payload_size 65536 True Cache RMI payload size
_true_cache_pdb_disc_time 3600 True Cache PDB disconnect time
_true_cache_preallocate_num_request 1024 True Cache number of request to preallocate
_true_cache_prewarm_enable TRUE Enable TRUE CACHE prewarming. If disabled on primary, all True Cachere
_true_cache_prewarm_tracing 0 Enable TRUE CACHE prewarm tracing
_true_cache_primary_cleanout TRUE Enable primary block cleanout for True Cache
_true_cache_pw_collect_pct 100 Percent of Cache to scan to collect TRUE CACHE prewarm blocks
_true_cache_pw_helpers 0 Number of processes TRUE CACHE prewarm should use to prefetch
_true_cache_pw_prefetch_count 128 Number of blocks TRUE CACHE prewarm should prefetch at a time
_true_cache_restart_timeout_secs 600 True Cache restart timeout
_true_cache_send_buffer 2 True Cache send buffer size
_true_cache_simulated_caps 1 True Cache simulated capabilities mask
_true_cache_temp_file_ext 10 True Cache default temp file extend
_true_cache_temp_file_size 100 True Cache default temp file size
_true_cache_wait_pdbopen 0 True Cache wait for PDB open at startup
_truncate_optimization_enabled TRUE do truncate optimization if set to TRUE
_tsenc_obfuscate_key NONE Encryption key obfuscation in memory
_tsenc_tracing 0 Enable TS encryption tracing
_tsm_connect_string TSM test connect string
_tsm_disable_auto_cleanup 1 Disable TSM auto cleanup actions
_tsq_shared_enabled TRUE Enable shared mode on tsq
_tstz_localtime_bypass FALSE Should TTC not convert to LocalTime to preserve Timestamp with Timezon
_ttc_annotations_level 0 enable ttc annotations
_tts_allow_charset_mismatch FALSE allow plugging in a tablespace with an incompatible character set
_tune_kctncv_diff_limit 134217728 Self-tune kctvncv diff limit for MTTR
_twelfth_spare_parameter twelfth spare parameter - integer
_twelfth_spare_pdb_parameter twelfth spare pdb parameter - integer
_twentieth_spare_parameter twentieth spare parameter - integer
_twentieth_spare_pdb_parameter twentieth spare pdb parameter - integer
_twenty-eighth_spare_parameter twenty-eighth spare parameter - integer
_twenty-eighth_spare_pdb_parameter twenty-eighth spare pdb parameter - string
_twenty-fifth_spare_parameter twenty-fifth spare parameter - integer
_twenty-fifth_spare_pdb_parameter twenty-fifth spare pdb parameter - string
_twenty-first_spare_parameter twenty-first spare parameter - integer
_twenty-first_spare_pdb_parameter twenty-first spare pdb parameter - string
_twenty-fourth_spare_parameter twenty-fourth spare parameter - integer
_twenty-fourth_spare_pdb_parameter twenty-fourth spare pdb parameter - string
_twenty-ninth_spare_parameter twenty-ninth spare parameter - integer
_twenty-ninth_spare_pdb_parameter twenty-ninth spare pdb parameter - string
_twenty-second_spare_parameter twenty-second spare parameter - integer
_twenty-second_spare_pdb_parameter twenty-second spare pdb parameter - string
_twenty-seventh_spare_parameter twenty-seventh spare parameter - integer
_twenty-seventh_spare_pdb_parameter twenty-seventh spare pdb parameter - string
_twenty-sixth_spare_parameter twenty-sixth spare parameter - integer
_twenty-sixth_spare_pdb_parameter twenty-sixth spare pdb parameter - string
_twenty-third_spare_parameter twenty-third spare parameter - integer
_twenty-third_spare_pdb_parameter twenty-third spare pdb parameter - string
_two-hundred-and-eighteenth_spare_parameter FALSE two-hundred-and-eighteenth spare parameter - boolean
_two-hundred-and-eighth_spare_parameter FALSE two-hundred-and-eighth spare parameter - boolean
_two-hundred-and-eleventh_spare_parameter FALSE two-hundred-and-eleventh spare parameter - boolean
_two-hundred-and-fifteenth_spare_parameter FALSE two-hundred-and-fifteenth spare parameter - boolean
_two-hundred-and-fifth_spare_parameter FALSE two-hundred-and-fifth spare parameter - boolean
_two-hundred-and-first_spare_parameter FALSE two-hundred-and-first spare parameter - boolean
_two-hundred-and-fourteenth_spare_parameter FALSE two-hundred-and-fourteenth spare parameter - boolean
_two-hundred-and-fourth_spare_parameter FALSE two-hundred-and-fourth spare parameter - boolean
_two-hundred-and-nineteenth_spare_parameter FALSE two-hundred-and-nineteenth spare parameter - boolean
_two-hundred-and-ninth_spare_parameter FALSE two-hundred-and-ninth spare parameter - boolean
_two-hundred-and-second_spare_parameter FALSE two-hundred-and-second spare parameter - boolean
_two-hundred-and-seventeenth_spare_parameter FALSE two-hundred-and-seventeenth spare parameter - boolean
_two-hundred-and-seventh_spare_parameter FALSE two-hundred-and-seventh spare parameter - boolean
_two-hundred-and-sixteenth_spare_parameter FALSE two-hundred-and-sixteenth spare parameter - boolean
_two-hundred-and-sixth_spare_parameter FALSE two-hundred-and-sixth spare parameter - boolean
_two-hundred-and-tenth_spare_parameter FALSE two-hundred-and-tenth spare parameter - boolean
_two-hundred-and-third_spare_parameter FALSE two-hundred-and-third spare parameter - boolean
_two-hundred-and-thirteenth_spare_parameter FALSE two-hundred-and-thirteenth spare parameter - boolean
_two-hundred-and-twelfth_spare_parameter FALSE two-hundred-and-twelfth spare parameter - boolean
_two-hundred-and-twentieth_spare_parameter FALSE two-hundred-and-twentieth spare parameter - boolean
_two-hundredth_spare_parameter FALSE two-hundredth spare parameter - boolean
_two_pass TRUE enable two-pass thread recovery
_two_pass_reverse_polish_enabled TRUE uses two-pass reverse polish alg. to generate canonical forms
_two_phase_rac_rolling_prepare_timeout 60 Prepare callback timeout for 2-Phase Rac Rolling in Seconds
_txeventq_dqlog_upd_chk TRUE Check the number of rows updated in the dequeue log
_txeventq_init_cache_startup 1 TxEventQ cache initialization on startup
_txeventq_lwm_msg_state_correction TRUE Enable correction of wrong message state for lwm advancement
_txeventq_raise_critical_error 8 Parameter to control raising critical error on failures
_txeventq_test_flags 0 TxEventQ test flags
_txn_commit_tracking_bg_interval 10000 KTCTI BG job interval
_txn_commit_tracking_minact_max_wait 10 KTCTI minact wait max wait time sec
_txn_commit_tracking_partition_capacity 20000 maximum partition size for commit_scn_log$
_txn_commit_tracking_test_flags 0 KTCTI test flags
_txn_control_trace_buf_size 4096 size the in-memory buffer size of txn control
_txn_max_quarantines 3 Max number of transaction that can be quarantined
_txn_notifications_sga_limit 10000000 Maximum notification private journal memory use per transaction
_txn_spare1 0 transaction spare variable1
_txn_spare2 0 transaction spare variable2
_txn_spare3 0 transaction spare variable3
_txn_timehouse_query_timeout 60 flashback query timeout value for a Timehouse table
_txn_timetravel_commit_scn 0 Time Travel DDL commit scn
_txn_timetravel_commit_time Time Travel commit timestamp
_txn_timetravel_custdb_alter_table FALSE Time Travel Customer DB allow ALTER TABLE
_txn_timetravel_ddl_xid Time Travel DDL XID
_txn_timetravel_instance 0 Enable time travel instance
_txn_trace_bucket_size 16384 Txn layer trace bucket size
_txn_trace_buckets Status of transaction layer buckets
_ub4_audit_sessionid FALSE Generate ub4 audit session id
_uga_cga_large_extent_size 262144 UGA/CGA large extent size
_ultrafast_latch_statistics TRUE maintain fast-path statistics for ultrafast latches
_um_huge_page_min_pct 60 Min percent of shared memory in UM backed by large pages
_umf_remote_enabled FALSE Enable remote UMF operations
_umf_remote_target_dblink UMF Remote Target DBLink for Flushing
_umf_test_action 0 test action parameter for UMF
_undo_autotune TRUE enable auto tuning of undo_retention
_undo_block_compression TRUE enable undo block compression
_undo_debug_mode 0 debug flag for undo related operations
_undo_debug_usage 0 invoke undo usage functions for testing
_undo_ofd_enabled TRUE enable ordered offline drop of undo segments for datafile shrink
_undo_ofd_excess 10 percent of excess undo segments to offline or drop
_undo_ofd_reserve 30 percent of excess undo segments to keep online
_undo_retention_time_limit 3600 undo retention time limit in seconds
_undo_tbs_slave_percent 0 Percentage of redo slaves for undo tablespace
_undotbs_regular_tables FALSE Create regular tables in undo tablespace
_undotbs_stepdown_pcent 75 Undo Tablespace small allocation step down percentage
_unified_audit_policy_disabled FALSE Disable Default Unified Audit Policies on DB Create
_unified_audit_trail_skip_delete_on_purge FALSE Skip the delete against Unified Audit Trail (UAT) during purge
_unified_memory_heap_mask 0 enable use of unified memory for these heaps
_unified_memory_pga_lim_pct 40 Percentage of pga limit in Unified Memory
_unified_memory_private_pct 20 Percentage of private memory in Unified Memory
_unified_memory_shared_pct 80 Percentage of shared memory in Unified Memory
_unified_pdb_shared_pct 60 UM Shared memory percent for a PDB
_unified_pga_alloc_wait_timeout 10000 UM allocation wait timeout
_unified_pga_block_size 262144 Unified PGA internal block size
_unified_pga_gran_free_timeout 3000 Granule free timeout
_unified_pga_gran_leak_timeout 180000 Granule leak timeout
_unified_pga_list_count 16 Unified PGA internal list count
_unified_pga_max_pool_size 0 max size in bytes of the unified pga pool
_unified_pga_pool_size 0 size in bytes of the unified pga pool
_union_rewrite_for_gs YES_GSET_MVS expand queries with GSets into UNIONs for rewrite
_uniq_cons_sql_enforcement TRUE disable extended data unique constraint SQL enforcement
_unnest_subquery TRUE enables unnesting of complex subqueries
_unused_block_compression TRUE enable unused block compression
_update_datafile_headers_with_space_information FALSE user requested update of datafile headers of locally managed datafiles
_upddel_dba_hash_mask_bits 0 controls masking of lower order bits in DBA
_upgrade_capture_noops TRUE do not skip capturing noops during upgrade
_upgrade_optim TRUE Upgrade optimization enabled
_upgrade_pdb_on_open TRUE Enable upgrading a PDB automatically on open
_usd_preload_blks 4 USD preload block count for prefetch
_usd_recent_read TRUE Allow to scan recent USD blocks
_use_adaptive_log_file_sync TRUE Adaptively switch between post/wait and polling
_use_aes128_redo_encryption FALSE If true, use AES128 encryption for redo
_use_best_fit FALSE use best fit to allocate space
_use_cached_asm_free_space FALSE Should x$kttets use cached ASM free space info
_use_column_stats_for_function TRUE enable the use of column statistics for DDP functions
_use_dynamic_shares 1 use dynamic shares
_use_external_data_cache TRUE Allow usage of external data cache
_use_fallocate_for_mga FALSE MGA fallocate enabled
_use_fips_mode FALSE Enable use of crypographic libraries in FIPS mode
_use_futex_ipc FALSE use futex ipc
_use_hugetlbfs_for_SGA FALSE Enable HugeTLBFS usage for SGA
_use_hugetlbfs_per_granule FALSE Enable file per granule with HugeTLBFS
_use_hybrid_encryption_mode FALSE Enable platform optimized encryption in hybrid mode
_use_ism TRUE Enable Shared Page Tables - ISM
_use_ism_for_pga TRUE Use ISM for allocating large extents
_use_kradc_fetch FALSE if TRUE, use kradc per process sync block fetch
_use_large_pages_for_mga FALSE MGA largepage enabled
_use_nosegment_indexes FALSE use nosegment indexes in explain plan
_use_pdb_parselock TRUE use PDB level parselock on ADG
_use_platform_compression_lib TRUE Enable platform optimized compression implementation
_use_platform_encryption_lib TRUE Enable platform optimized encryption implementation
_use_platform_hash_function TRUE control use of platform specific hash function
_use_pseudo_policy TRUE use pseudo policy for sensitive data handling
_use_realfree_heap TRUE use real-free based allocator for PGA memory
_use_seq_process_cache TRUE whether to use process local seq cache
_use_shared_capture FALSE Enable GoldenGate Extracts to use Shared Capture Service
_use_single_log_writer ADAPTIVE Use a single process for redo log writing
_use_stored_fgd TRUE Enable use of stored fine-grained delta for invalidations
_use_text_large_pages TRUE Use large pages for text if available
_use_vector_post TRUE use vector post
_use_zero_copy_io TRUE Should network vector IO interface be used for data transfer
_user_defined_sharding 0 enable user-defined sharding
_user_dual_pw User defaults to dual password lookup regardless of rollover status
_ut_fast_lrg_prediction FALSE use short interval for session SO prediction
_utl32k_mv_query FALSE utl32k.sql is compiling a materialized view query
_utlfile_buffer_putline FALSE Utl_File Buffer PUT_LINE
_utlfile_dirpath FALSE return Utl_File Accessible
_utlmmig_table_stats_gathering TRUE enable/disable utlmmig table stats gathering at upgrade
_uts_disable_client_ip_trace FALSE Disables the printing of client IP address in trace files
_uts_enable_alltrc_stats FALSE Enables accounting of trace data in incident and cdmp trace files
_uts_first_segment_retain TRUE Should we retain the first trace segment
_uts_first_segment_size 0 Maximum size (in bytes) of first segments
_uts_inc_inmem_trace 0 Controls UTS in-memory tracing during an active incident
_uts_trace_buffer_size 0 Trace disk buffer size
_uts_trace_disk_threshold 1073741824 Trace disk threshold parameter
_uts_trace_files_nopurge FALSE Sets trace files to not get purged
_uts_trace_segment_size 0 Maximum size (in bytes) of a trace segment
_uts_trace_segments 5 Maximum number of trace segments
_uxt_cloud_delete_on_drop_table TRUE Delete cloud files on drop of updatable external table
_uxt_credential credential name used for updatable external table data
_uxt_diag_flags 0 flags to enable diagnostics for updatable external tables
_uxt_uri_prefix URI prefix for updatable external tables
_validate_flashback_database FALSE Scan database to validate result of flashback database
_validate_metric_groups FALSE Enable/disable SGA Metric Structure validation
_validate_readmem_redo HEADER_ONLY validate redo blocks read from in-memory log buffer
_vault_based_password_auth TRUE Used to enable or disable vault based pwd authentication
_vector_accuracy_report_sample_size 25 vector accuracy report sample size
_vector_aggregation_max_size 0 max size of vector aggregation space
_vector_autogrow_sga_percent 70 Vector max memory size as SGA percent
_vector_debug 0 IMA vector memory debug
_vector_dense_accum_max 100 vector group by dense accumulator space max
_vector_distance_metric_default COSINE vector distance metric
_vector_encoding_mode MANUAL enable vector encoding(OFF/MANUAL/AUTO)
_vector_hnsw_cancel_ingest_task_retry 5 Vector HNSW index cancel ingest task retries
_vector_hnsw_cancel_ingest_task_timeout 5 Vector HNSW index cancel ingest task timout in sec
_vector_hnsw_enable_heuristic TRUE If true, the heuristic neighbor selection is enabled in HNSW
_vector_hnsw_force_seq_ingestion FALSE If true, the HNSW is loaded sequentially
_vector_hnsw_load_batch_size 500 Vector HNSW index ingestion batch size
_vector_hnsw_mem_overestimate_percent 10 Vector HNSW index memory overestimate percentage
_vector_hnsw_sparse_threshold 5000000 Vector HNSW index sparse bitset usage threshold
_vector_hnsw_stats_cache_enable TRUE Vector HNSW index statistics collection with cache
_vector_hnsw_stats_cache_mem_percent 5 Vector HNSW index statistics collection memory percentage
_vector_hnsw_stats_enable_accmap FALSE Enable/disable the neighbor graph accuracy map usage
_vector_hnsw_verification_lvl 0 Vector HNSW index verification level
_vector_index_calibration_dvsz 5000 Data vector batch size used for calibrating vector indexes
_vector_index_cleanup_build BACKGROUND Vector index build cleanup
_vector_index_cleanup_inline TRUE Vector index inline cleanup
_vector_index_compute_statistics TRUE enable/disable vector index compute statistics
_vector_index_ddl_deadlock_prevention_timeout 15000000 vector index deadlock prevention timeout usec
_vector_index_disable_directload FALSE disable direct load operations on tables with vector indexes
_vector_index_disable_pmop FALSE disable partition management operations on tables with vector indexes
_vector_index_dist_txn_support TRUE vector support dist txn with hnsw index
_vector_index_elastic_memory 0 vector index hnsw elastic memory flags
_vector_index_flush_batch_size 1024 vector index private journal array flush size
_vector_index_hnsw_buffer_lvector FALSE Vector HNSW index buffer lvectors
_vector_index_hnsw_checkpoint_enable TRUE vector hnsw index checkpoints enable
_vector_index_hnsw_checkpoint_rac_duplication TRUE vector hnsw index reload using checkpoints in rac duplication
_vector_index_hnsw_checkpoint_refresh AUTO specifies checkpoint creation policy during index refresh
_vector_index_hnsw_checkpoint_reload_enable TRUE vector hnsw index reload using checkpoints enable
_vector_index_hnsw_checkpoint_snapshot_threshold 5 vector hnsw index checkpoint snapshot threshold number
_vector_index_hnsw_cursor_invalidation 31 vector index hnsw cursor invalidation flags
_vector_index_hnsw_dist_enable TRUE vector distributed hnsw index enable
_vector_index_hnsw_dist_rac_disable_index_ktsjq_re 3 vector index hnswd rac disable index ktsjq retries
tries
_vector_index_hnsw_dist_rac_leader_stepdown_tout_m 5 vector index hnswd rac leader stepdown multiplier
ultiplier
_vector_index_hnsw_dist_rac_rcfg_index_open_graph_ 60 vector index hnswd rac rcfg index poll reply wait
reply_wait
_vector_index_hnsw_dist_rac_rcfg_index_poll_reply_ 60 vector index neighbor graph refresh rac poll reply wait
wait
_vector_index_hnsw_dist_rac_rcfg_poll_nap_time_bet 30 vector index hnswd rac rcfg poll nap time between epochs
ween_epochs
_vector_index_hnsw_dist_rac_rebuild_rcfg_threshold 3 vector index hnswd rac rebuild rcfg threshold
_vector_index_hnsw_dist_rac_reconfig 1 vector index hnsw dist rac reconfig
_vector_index_hnsw_dist_rac_reconfig_dbg 0 vector index hnsw dist rac reconfig dbg
_vector_index_hnsw_dist_rac_redist_rcfg_threshold 25 vector index hnswd rac redist rcfg threshold
_vector_index_hnsw_dist_rac_redistribute_poll_loca 16 vector index hnswd rac redistribute poll localq size
l_q_size
_vector_index_hnsw_dist_rac_redistribute_poll_retr vector index neighbor graph refresh rac poll retry count
y_count
_vector_index_hnsw_dist_redist_info_wait 180 vector index neighbor graph send redist info reply wait
_vector_index_hnsw_dist_repopulation_enable FALSE vector distributed hnsw repopulation enable
_vector_index_hnsw_dist_stubs_enable FALSE vector distributed hnsw index stubs enable
_vector_index_hnsw_distribution_unit_boundary_esti 0 vector distributed hnsw index distribution unit boundary estimate
mate
_vector_index_hnsw_distribution_unit_memory_limit 16 vector distributed hnsw index distribution unit memory limit
_vector_index_hnsw_dml_trigger_mode 3 vector index neighbor graph dml triger mode
_vector_index_hnsw_enable_local_hnsw_rac TRUE Enable/disable local HNSW vector index on RAC
_vector_index_hnsw_included_columns_enable TRUE HNSW index included columns enabled
_vector_index_hnsw_local_enable FALSE Enable/Disable local HNSW index
_vector_index_hnsw_optimizations 1 Vector index HNSW optimizations
_vector_index_hnsw_parallel_build_index_flag 0 vector hnsw parallel build index flag
_vector_index_hnsw_quiesce_readers_enable TRUE vector hnsw index refcount wait enable
_vector_index_hnsw_rac_duplication TRUE Duplicate HNSW in-memory on all instances
_vector_index_hnsw_rac_poll_interval 30 Duplicate HNSW in-memory on RAC Poll timeout
_vector_index_hnsw_rac_poll_interval_short 1 Duplicate HNSW in-memory on RAC short Poll timeout
_vector_index_hnsw_rac_retry_count 10 Duplicate HNSW in-memory on RAC retry count
_vector_index_hnsw_range_predicated_sql_max_bind 500 vector distributed hnsw index range predicated sql rpi max binds
_vector_index_hnsw_refresh_rac_poll_retry_count vector index neighbor graph refresh rac poll retry count
_vector_index_hnsw_refresh_recovery_mode 1 vector index neighbor graph refresh recovery mode
_vector_index_hnsw_repop_retry_count 3 vector index neighbor graph repopulate create table retry count
_vector_index_hnsw_repopulate_threshold_count 100000 vector index neighbor graph repopulate threshold count
_vector_index_hnsw_scalar_quantization_enabled TRUE HNSW vector index scalar quantization enable
_vector_index_hnsw_snapshot_rac_enable TRUE vector index neighbor graph snapshot rac enable
_vector_index_hnsw_snapshot_threshold_count 10000 vector index neighbor graph snapshot threshold count
_vector_index_hnsw_stats_refresh_threshold 100 vector index neighbor graph stats refresh snapshot threshold
_vector_index_hnsw_test_flags 0 vector hnsw index test
_vector_index_internal_table_drop_retry_interval 100 vector hnsw index internal table drop retry interval
_vector_index_ivf_alert_threshold 10000 Threshold on the number of non-null vectors for creating vector indexe
_vector_index_ivf_batched_journal_apply FALSE Enable batch inserts from the IVF (re)build journal
_vector_index_ivf_centroid_partition_target_size 200 The target partition size for centroid partition table
_vector_index_ivf_centroids_in_large_pool TRUE Populate inmemory centroids in large pool for the IVF vector index
_vector_index_ivf_covering_columns TRUE Enable covering columns for IVF index to be used in queries
_vector_index_ivf_covering_columns_partitioned_tab TRUE IVF index covering columns from partitioned table enabled
le
_vector_index_ivf_deterministic_centroids FALSE Enable deterministic centroids creation for vector IVF index
_vector_index_ivf_disk_format 1 On-disk compress format for vector index
_vector_index_ivf_enable_local_index TRUE enable/disable vector index local index
_vector_index_ivf_flashcache_format 1 Flashcache compress format for vector index
_vector_index_ivf_im_centroids_in_dmls TRUE Use inmemory centroids in dmls that maintain IVF vector index
_vector_index_ivf_im_centroids_in_queries TRUE Use inmemory centroids in queries that use IVF vector index
_vector_index_ivf_init_model_arg 0 The argument for initializing the model of a vector index partition
_vector_index_ivf_init_model_method 1 Method to initialize the model for a newly added vector index partitio
_vector_index_ivf_initrans 0 The setting of INITRANS for creating centroid partition table
_vector_index_ivf_journal_replay_iteration 3 vector ivf index journal replay iteration
_vector_index_ivf_local_index_rewrite_level 3 vector index local index rewrite level
_vector_index_ivf_local_min_rows_scan 10240 the minimal number of rows to be scanned in local IVF queries
_vector_index_ivf_partition_algorithm 1 Partitioning method for creating centroid partition table
_vector_index_ivf_partition_number 0 The number of partitions for creating centroid partition table
_vector_index_ivf_partition_size AUTO The preferred partition size for the IVF centroid partition table
_vector_index_ivf_pctfree 0 Physcial attribute PCTFREE for creating vector index
_vector_index_ivf_populate_im_centroids TRUE Populate inmemory centroids for the IVF vector index
_vector_index_ivf_sample_size 0 vector ivf index sample size
_vector_index_ivf_test_flags 0 IVF vector index test
_vector_index_journaling TRUE enable/disable vector index journaling
_vector_index_minact_max_wait 10 vector index minact max wait time sec
_vector_index_neighbor_graph_refresh AUTO vector index neighbor graph refresh mode
_vector_index_online_build_enable TRUE vector index online build enable
_vector_index_online_catchup_iterations 5 vector index online catchup iteration count
_vector_index_online_catchup_timeout 0 vector index online catchup timeout percentage
_vector_index_online_dml_threshold_count 1000 vector index online build dml drain threshold count
_vector_index_online_local_rebuild_enable TRUE local vector index online rebuild enable
_vector_index_online_rebuild_enable TRUE vector index online rebuild enable
_vector_index_parallel_degree_limit 0 Parallel degree limit for creating a vector index
_vector_index_parallel_dml DISABLED PDML configuration for vector indexes
_vector_index_partition_staleness_threshold 2 vector index partition staleness threshold
_vector_index_quiesce_readers_timeout 300 vector index refcount wait timeout
_vector_index_scan_extra_monitor_hint vector index scan extra monitor hint
_vector_index_scan_use_monitor_hint FALSE enable/disable vector index scan monitor hint
_vector_index_space_grow_percent 3 Percentage of space to be grown at a time for Private Journal using ba
_vector_index_space_grow_threshold 80 Percentage of space utilization threshold to reach before calling the
_vector_index_stats_use_enabled FALSE Enable/Disable use of vector index stats
_vector_index_test_flags 0 vector index journaling test flags
_vector_index_time_staleness_factor 90 vector index time staleness factor (percentage)
_vector_index_use_mm_for_stats TRUE Enable/Disable use of MM optimization for vector index stats
_vector_journal_fxt_tab_size 100 vector journal fixed table size
_vector_memory_64k_percent 10 percentage of vector memory area for 64k pools
_vector_operations_control 0 control different uses/algorithms related to vector transform
_vector_private_journal_maxexts 1000 Max number of extents from 1MB pool per vector PJ
_vector_query_capture_area_size 100 Memory budget allowed for vector query capture feature
_vector_query_capture_interval 1 Sampling interval for query vector capture in seconds
_vector_query_capture_retention_days 7 Query vectors will be stored till retention period
_vector_serialize_temp_threshold 1000 threshold for serializing vector transform temp table writes
_vendor_lib_loc Vendor library search root directory
_verify_db_blocks_after_encrypt FALSE if TRUE, decrypt each block after encryption to verify encrypt
_verify_encrypted_tablespace_keys TRUE if TRUE, verify encryption key signature for data files
_verify_fg_log_checksum FALSE LGWR verifies redo checksums generated by foreground processes
_verify_flashback_redo TRUE Verify that the redo logs needed for flashback are available
_verify_undo_quota FALSE TRUE - verify consistency of undo quota statistics
_very_large_object_threshold 500 upper threshold level of object size for direct reads
_virtual_column_access_control TRUE require VPD/RAS protection for virtual columns derived from protected
_virtual_column_overload_allowed TRUE overload virtual columns expression
_vkrm_schedule_interval 10 VKRM scheduling interval
_vktm_assert_thresh 30 soft assert threshold VKTM timer drift
_wait_breakup_threshold_csecs 600 Wait breakup threshold (in centiseconds)
_wait_breakup_time_csecs 300 Wait breakup time (in centiseconds)
_wait_for_busy_session 10 Wait time before killing active sessions during switchover
_wait_for_sync TRUE wait for sync on commit MUST BE ALWAYS TRUE
_wait_outlier_detection_enable OFF Enable wait outlier detection module?
_wait_outlier_dump_flags 0 Wait Outlier Dump Flags
_wait_outlier_event_names Wait events to watch for outliers
_wait_outlier_lambda_x1000 1500 Lambda (in thousands) to compute outliers
_wait_outlier_min_waits 10 Minimum waits required to enable wait outliers detection
_wait_outlier_num_outliers 600 Max number of outliers tracked
_wait_samples_max_sections 40 Wait Samples maximum sections
_wait_samples_max_time_secs 120 Wait Samples maximum time in seconds
_wait_stats_cpus_per_set 16 Wait event stats: number of cpus per set
_wait_tracker_interval_secs 10 Wait Tracker number of seconds per interval
_wait_tracker_num_intervals 0 Wait Tracker number of intervals
_wait_yield_hp_mode yield Wait Yield - High Priority Mode
_wait_yield_mode yield Wait Yield - Mode
_wait_yield_sleep_freq 100 Wait Yield - Sleep Frequency
_wait_yield_sleep_time_msecs 1 Wait Yield - Sleep Time (in milliseconds)
_wait_yield_yield_freq 20 Wait Yield - Yield Frequency
_walk_insert_threshold 0 maximum number of unusable blocks to walk across freelist
_watchpoint_on FALSE is the watchpointing feature turned on?
_wcr_control 0 Oracle internal test WCR parameter used ONLY for testing!
_wcr_grv_cache_size 65535 Oracle internal: Set the replay cache size for WRR$_REPLAY_DATA.
_wcr_seq_cache_size 65535 Oracle internal: Set the replay cache size for WRR$_REPLAY_SEQ_DATA.
_wcr_test_action 0 Oracle internal test WCR parameter used for test actions
_widetab_comp_enabled TRUE wide table compression enabled
_windowfunc_optimization_settings 0 settings for window function optimizations
_with_subquery OPTIMIZER WITH subquery transformation
_worker_threads 0 Number of worker threads
_workload_attributes session workload attributes
_workspace_memory_threshold 10 Percentage of PGA consumption before workspace migration to disk
_write_clones 3 write clones flag
_write_renamed_datafile_name FALSE print renamed datafile names to alert log
_xa_internal_retries 600 number of internal retries for xa transactions
_xa_parameters Exascale parameters
_xds_max_child_cursors 100 Maximum number of XDS user-specific child cursors
_xengem_devname DEFAULT override default VM GEM device name used by skgvm
_xengem_diagmode OFF set to OFF to disable VM GEM support and functionalities
_xengem_enabled TRUE Enable OVM GEM support
_xpl_peeked_binds_log_size 8192 maximum bytes for logging peeked bind values for V$SQL_PLAN (0 = OFF)
_xpl_trace 0 Explain Plan tracing parameter
_xs_cleanup_task TRUE Triton Session Cleanup
_xs_dispatcher_only FALSE XS dispatcher only mode
_xs_logon_grant FALSE Create session privilege is required for RAS direct logon user to logi
_xs_max_retries_lib_lock 30 Maximum number of retries to get lib lock
_xs_sidp_allow_sha1 TRUE XS SIDP allow use of SHA1
_xsolapi_auto_materialization_bound 20 OLAP API lower bound for auto materialization.
_xsolapi_auto_materialization_type PRED_AND_RC OLAP API behavior for auto materialization
_xsolapi_build_trace FALSE OLAP API output build info to trace file
_xsolapi_debug_output SUPPRESS OLAP API debug output disposition
_xsolapi_densify_cubes TABULAR OLAP API cube densification
_xsolapi_dimension_group_creation OVERFETCH OLAP API symmetric overfetch
_xsolapi_dml_trace OLAP API output dml commands and expressions to trace file
_xsolapi_fetch_type PARTIAL OLAP API fetch type
_xsolapi_fix_vptrs TRUE OLAP API Enable vptr fixing logic in shared server mode
_xsolapi_generate_with_clause FALSE OLAP API generates WITH clause?
_xsolapi_hierarchy_value_type unique OLAP API hierarchy value type
_xsolapi_load_at_process_start NEVER When to load OLAP API library at server process start
_xsolapi_materialization_rowcache_min_rows_for_use 1 OLAP API min number of rows required to use rowcache in query material
_xsolapi_materialize_sources TRUE OLAP API Enable source materialization
_xsolapi_metadata_reader_mode DEFAULT OLAP API metadata reader mode
_xsolapi_odbo_mode FALSE OLAP API uses ODBO mode?
_xsolapi_opt_aw_position TRUE OLAP API enables AW position and count optimization?
_xsolapi_optimize_suppression TRUE OLAP API optimizes suppressions?
_xsolapi_precompute_subquery TRUE OLAP API precomputes subqueries?
_xsolapi_remove_columns_for_materialization TRUE OLAP API removes columns for materialization?
_xsolapi_set_nls TRUE OLAP API sets NLS?
_xsolapi_share_executors TRUE OLAP API share executors?
_xsolapi_source_trace FALSE OLAP API output Source definitions to trace file
_xsolapi_sql_all_multi_join_non_base_hints OLAP API multi-join non-base hints
_xsolapi_sql_all_non_base_hints OLAP API non-base hints
_xsolapi_sql_auto_dimension_hints FALSE OLAP API enable automatic dimension hints
_xsolapi_sql_auto_measure_hints TRUE OLAP API enable automatic measure hints
_xsolapi_sql_dimension_hints OLAP API dimension hints
_xsolapi_sql_enable_aw_join TRUE OLAP API enables AW join?
_xsolapi_sql_enable_aw_qdr_merge TRUE OLAP API enables AW QDR merge?
_xsolapi_sql_hints OLAP API generic hints
_xsolapi_sql_measure_hints OLAP API measure hints
_xsolapi_sql_minus_threshold 1000 OLAP API SQL MINUS threshold
_xsolapi_sql_optimize TRUE OLAP API enable optimization
_xsolapi_sql_prepare_stmt_cache_size 16 OLAP API prepare statement cache size
_xsolapi_sql_remove_columns TRUE OLAP API enable remove unused columns optimizations
_xsolapi_sql_result_set_cache_size 32 OLAP API result set cache size
_xsolapi_sql_symmetric_predicate TRUE OLAP API enable symmetric predicate for dimension groups
_xsolapi_sql_top_dimension_hints OLAP API top dimension hints
_xsolapi_sql_top_measure_hints OLAP API top measure hints
_xsolapi_sql_use_bind_variables TRUE OLAP API enable bind variables optimization
_xsolapi_stringify_order_levels FALSE OLAP API stringifies order levels?
_xsolapi_support_mtm FALSE OLAP API MTM mapping classes supported?
_xsolapi_suppression_aw_mask_threshold 1000 OLAP API suppression AW mask threshold
_xsolapi_suppression_chunk_size 4000 OLAP API suppression chunk size
_xsolapi_use_models TRUE OLAP API uses models?
_xsolapi_use_olap_dml TRUE OLAP API uses OLAP DML?
_xsolapi_use_olap_dml_for_rank TRUE OLAP API uses OLAP DML for rank?
_xt_coverage none external tables code coverage parameter
_xt_def_compression_ratio 4 Default compression ratio for external table data files
_xt_enable_columnar_fetch TRUE Enable external table columnar fetch
_xt_http_wscl FALSE Use KGWSCL for HTTP requests
_xt_hybrid_addl_hidden_column FALSE enable additional hidden columns for external/hybrid table
_xt_legacy_debug_flags 0 Debug flags for ORACLE_LOADER and ORACLE_DATAPUMP
_xt_load_data_share FALSE Use External Table to read during cache load
_xt_pred_pushdown FALSE enable external table predicate pushdown
_xt_preproc_timeout 100 external table preprocessor timeout
_xt_sampling_scan_granules ON Granule Sampling for Block Sampling of External Tables
_xt_sampling_scan_granules_min_granules 1 Minimum number of granules to scan for granule sampling
_xt_table_hidden_column FALSE enable hidden columns for external table
_xt_trace none external tables trace parameter
_xtbigdata_max_buffersize 10240 maximum size of IO Buffers for exadoop external tables (in KB)
_xtbuffer_size 0 buffer size in KB needed for populate/query operation
_xtts_allow_pre10 FALSE allow cross platform for pre10 compatible tablespace
_xtts_set_platform_info FALSE set cross platform info during file header read
_zonemap_auto_candidate_table_min_size 5000 Minimum size for a table to be candidate for an automatic zonemap
_zonemap_auto_clustering_ratio 50 Data clustering ratio in percent for automatic zonemap columns
_zonemap_control 0 control different uses/algorithms related to zonemaps
_zonemap_refresh_within_load TRUE Control the refresh of basic zonemaps during/after data load
_zonemap_staleness_tracking 1 control the staleness tracking of zonemaps via trigger
_zonemap_usage_tracking TRUE Control the capture of zonemap usage statistics
_zonemap_use_enabled TRUE enable the use of zonemaps for IO pruning
adg_account_info_tracking LOCAL ADG user account info tracked in standby(LOCAL) or in Primary(GLOBAL)
adg_redirect_dml FALSE Enable DML Redirection from ADG
alert_log_max_size 1048576000 Alert-log maximum total size
allow_global_dblinks FALSE LDAP lookup for DBLINKS
allow_group_access_to_sga FALSE Allow read access for SGA to users of Oracle owner group
allow_legacy_reco_protocol TRUE Should the database allow the legacy RECO protocol
allow_rowid_column_type FALSE Allow creation of rowid column
allow_weak_crypto TRUE Allow weak crypto usage in DBMS_CRYPTO
approx_for_aggregation FALSE Replace exact aggregation with approximate aggregation
approx_for_count_distinct FALSE Replace count distinct with approx_count_distinct
approx_for_percentile NONE Replace percentile_* with approx_percentile
aq_tm_processes 1 number of AQ Time Managers to start
archive_lag_target 0 Maximum number of seconds of redos the standby could lose
asm_diskgroups disk groups to mount automatically
asm_diskstring disk set locations for discovery
asm_io_processes 20 number of I/O processes per domain in the ASM IOSERVER instance
asm_power_limit 1 number of parallel relocations for disk rebalancing
asm_preferred_read_failure_groups preferred read failure groups
asm_unified_audit_destination SYSTEMLOG Configuring ASM Unified Audit Destination
asm_unified_audit_level BASIC Configuring ASM Unified Audit Level
audit_file_dest /u01/app/oracle/prod Directory in which auditing files are to reside
uct/23.0.0/dbhome_1/
rdbms/audit
audit_sys_operations FALSE enable sys auditing
audit_syslog_level Syslog facility and level
audit_trail NONE enable system auditing
auto_start_pdb_services FALSE Automatically start all PDB services on PDB Open
autotask_max_active_pdbs 2 Setting for Autotask Maximum Maintenance PDBs
awr_pdb_autoflush_enabled TRUE Enable/Disable AWR automatic PDB flushing
awr_pdb_max_parallel_slaves 10 maximum concurrent AWR PDB MMON slaves per instance
awr_snapshot_time_offset 0 Setting for AWR Snapshot Time Offset
background_core_dump partial Core Size for Background Processes
background_dump_dest /u01/app/oracle/prod Detached process dump directory
uct/23.0.0/dbhome_1/
rdbms/log
backup_tape_io_slaves FALSE BACKUP Tape I/O slaves
bitmap_merge_area_size 1048576 maximum memory allow for BITMAP MERGE
blank_trimming FALSE blank trimming semantics parameter
blockchain_table_max_no_drop maximum idle retention minutes for blockchain tables
blockchain_table_retention_threshold 16 maximum retention without TABLE RETENTION privilege
buffer_pool_keep Number of database blocks/latches in keep buffer pool
buffer_pool_recycle Number of database blocks/latches in recycle buffer pool
calendar_fiscal_year_start Start of fiscal year
cdb_cluster FALSE if TRUE startup in CDB Cluster mode
cdb_cluster_name CDB Cluster name
cell_offload_compaction ADAPTIVE Cell packet compaction strategy
cell_offload_decryption TRUE enable SQL processing offload of encrypted data to cells
cell_offload_parameters Additional cell offload parameters
cell_offload_plan_display AUTO Cell offload explain plan display
cell_offload_processing TRUE enable SQL processing offload to cells
cell_offloadgroup_name Set the offload group name
circuits max number of circuits
client_prefetch_rows 0 Client prefetch rows value
client_result_cache_lag 3000 client result cache maximum lag in milliseconds
client_result_cache_size 0 client result cache max size in bytes
client_statistics_level TYPICAL Client Statistics Level
clonedb FALSE clone database
clonedb_dir CloneDB Directory
cloud_table_commit_threshold 0 export threshold (row count) for buffered cloud table
cluster_database FALSE if TRUE startup in cluster database mode
cluster_interconnects interconnects for RAC use
commit_logging transaction commit log write behaviour
commit_point_strength 1 Bias this node has toward not preparing in a two-phase commit
commit_wait transaction commit log wait behaviour
commit_write transaction commit log write behaviour
common_user_prefix Enforce restriction on a prefix of a Common User/Role/Profile name
compatible 23.6.0 Database will be completely compatible with this software version
connection_brokers ((TYPE=DEDICATED)(BR connection brokers specification
OKERS=2)(CONNECTIONS
=2000)), ((TYPE=EMON
)(BROKERS=1))
container_data ALL which containers should data be returned from?
containers_parallel_degree 65535 Parallel degree for a CONTAINERS() query
control_file_record_keep_time 7 control file record keep time in days
control_files /u01/app/oracle/orad control file names list
ata/CDB26AI/controlf
ile/o1_mf_nr8gjx0r_.
ctl, /u01/app/oracle
/fast_recovery_area/
CDB26AI/controlfile/
o1_mf_nr8gjx3t_.ctl
control_management_pack_access DIAGNOSTIC+TUNING declares which manageability packs are enabled
core_dump_dest /u01/app/oracle/diag Core dump directory
/rdbms/cdb26ai/cdb26
ai/cdump
cpu_count 4 maximum number of CPUs
cpu_min_count 4 minimum number of CPUs required
create_bitmap_area_size 8388608 size of create bitmap buffer for bitmap index
create_stored_outlines create stored outlines for DML statements
cursor_bind_capture_destination memory+disk Allowed destination for captured bind variables
cursor_invalidation IMMEDIATE default for DDL cursor invalidation semantics
cursor_sharing EXACT cursor sharing mode
cursor_space_for_time FALSE use more memory in order to get faster execution
data_guard_max_io_time 240 maximum I/O time before process considered hung
data_guard_max_longio_time 240 maximum long I/O time before process considered hung
data_guard_sync_latency 0 Data Guard SYNC latency
data_transfer_cache_size 0 Size of data transfer cache
db_16k_cache_size 0 Size of cache for 16K buffers
db_2k_cache_size 0 Size of cache for 2K buffers
db_32k_cache_size 0 Size of cache for 32K buffers
db_4k_cache_size 0 Size of cache for 4K buffers
db_8k_cache_size 0 Size of cache for 8K buffers
db_big_table_cache_percent_target 0 Big table cache target size in percentage
db_block_buffers 0 Number of database blocks cached in memory
db_block_checking FALSE header checking and data and index block checking
db_block_checksum TYPICAL store checksum in db blocks and check during reads
db_block_size 8192 Size of database block in bytes
db_cache_advice ON Buffer cache sizing advisory
db_cache_size 0 Size of DEFAULT buffer pool for standard block size buffers
db_create_file_dest /u01/app/oracle/orad default database location
ata
db_create_online_log_dest_1 online log/controlfile destination #1
db_create_online_log_dest_2 online log/controlfile destination #2
db_create_online_log_dest_3 online log/controlfile destination #3
db_create_online_log_dest_4 online log/controlfile destination #4
db_create_online_log_dest_5 online log/controlfile destination #5
db_domain example.com directory part of global database name stored with CREATE DATABASE
db_file_multiblock_read_count 128 db block to be read each IO
db_file_name_convert datafile name convert patterns and strings for standby/clone db
db_files 200 max allowable # db files
db_flash_cache_file flash cache file for default block size
db_flash_cache_size 0 flash cache size for db_flash_cache_file
db_flashback_log_dest Separate creation directory for flashback database logs
db_flashback_log_dest_size 0 Size limit of separate creation directory for flashback da
db_flashback_retention_target 1440 Maximum Flashback Database log retention time in minutes.
db_index_compression_inheritance NONE options for table or tablespace level compression inheritance
db_keep_cache_size 0 Size of KEEP buffer pool for standard block size buffers
db_lost_write_protect AUTO enable lost write detection
db_name cdb26ai database name specified in CREATE DATABASE
db_performance_profile Database performance category
db_recovery_auto_rekey ON enable automatic tablespace rekey recovery
db_recovery_file_dest /u01/app/oracle/fast default database recovery file location
_recovery_area
db_recovery_file_dest_size 15521021952 database recovery files size limit
db_recycle_cache_size 0 Size of RECYCLE buffer pool for standard block size buffers
db_securefile PREFERRED permit securefile storage during lob creation
db_ultra_safe OFF Sets defaults for other parameters that control protection levels
db_unique_name cdb26ai Database Unique Name
db_unrecoverable_scn_tracking TRUE Track nologging SCN in controlfile
db_writer_processes 1 number of background database writer processes to start
dbnest_enable NONE database Nest enable
dbnest_pdb_fs_conf PDB Filesystem configuration
dbwr_io_slaves 0 DBWR I/O slaves
ddl_lock_timeout 0 timeout to restrict the time that ddls wait for dml lock
debug_log_max_size 1048576000 Debug-log maximum total size
default_credential default credential session parameter
default_sharing metadata Default sharing clause
deferred_segment_creation TRUE defer segment creation to first insert
dg_broker_config_file1 /u01/app/oracle/prod data guard broker configuration file #1
uct/23.0.0/dbhome_1/
dbs/dr1cdb26ai.dat
dg_broker_config_file2 /u01/app/oracle/prod data guard broker configuration file #2
uct/23.0.0/dbhome_1/
dbs/dr2cdb26ai.dat
dg_broker_start FALSE start Data Guard broker (DMON process)
diagnostic_dest /u01/app/oracle diagnostic base directory
diagnostics_control IGNORE controls response when 'enabling diagnostics' privilege is absent
directory_prefixes_allowed Allowed prefixes for directory paths created inside the PDB
disable_pdb_feature 0 Disable features
disk_asynch_io TRUE Use asynch I/O for random access devices
dispatchers (PROTOCOL=TCP) (SERV specifications of dispatchers
ICE=cdb26aiXDB)
distributed_lock_timeout 60 number of seconds a distributed transaction waits for a lock
dml_locks 2216 dml locks - one for each table modified in a transaction
dnfs_batch_size 4096 Max number of dNFS asynch I/O requests queued per session
drcp_connection_limit 0 DRCP connection limit
drcp_dedicated_opt NO Turn on/off dedicated optimization for DRCP
dst_upgrade_insert_conv TRUE Enables/Disables internal conversions during DST upgrade
enable_automatic_maintenance_pdb TRUE Enable/Disable Automated Maintenance for Non-Root PDB
enable_ddl_logging FALSE enable ddl logging
enable_dnfs_dispatcher FALSE Enable DNFS Dispatcher
enable_goldengate_replication FALSE goldengate replication enabled
enable_imc_with_mira FALSE enable IMC with multi instance redo apply
enable_per_pdb_drcp FALSE Turn on/off per PDB DRCP
enable_pluggable_database TRUE Enable Pluggable Database
enabled_PDBs_on_standby * List of Enabled PDB patterns
encrypt_new_tablespaces CLOUD_ONLY whether to encrypt newly created tablespaces
error_message_details ON print additional explanatory error details
event debug event control - default null string
external_keystore_credential_location external keystore credential location
fal_client FAL client
fal_server FAL server list
fast_start_io_target 0 Upper bound on recovery reads
fast_start_mttr_target 0 MTTR target in seconds
fast_start_parallel_rollback LOW max number of parallel recovery slaves that may be used
file_mapping FALSE enable file mapping
fileio_network_adapters Network Adapters for File I/O
filesystemio_options none IO operations on filesystem files
fixed_date fixed SYSDATE value
forward_listener forward listener
gcs_server_processes 0 number of background gcs server processes to start
global_names FALSE enforce that database links have same name as remote database
global_txn_processes 1 number of background global transaction processes to start
group_by_position_enabled FALSE enable/disable group by position
hash_area_size 131072 size of in-memory hash work area
heartbeat_batch_size 5 Number of heartbeats to be sent in a batch
heat_map OFF ILM Heatmap Tracking
hi_shared_memory_address 0 SGA starting address (high order 32-bits on 64-bit platforms)
hs_autoregister TRUE enable automatic server DD updates in HS agent self-registration
http_proxy http_proxy
hybrid_read_only FALSE Hybrid read only mode allows CDB common user to patch the PDB
identity_provider_config Identity Provider Configuration
identity_provider_type NONE Identity Provider Type
ifile include file in init.ora
ignore_session_set_param_errors Ignore errors during alter session param set
inmemory_adg_enabled TRUE Enable IMC support on ADG
inmemory_automatic_level OFF Enable Automatic In-Memory management
inmemory_clause_default Default in-memory clause for new tables
inmemory_deep_vectorization TRUE In-Memory Deep Vectorization Enabled
inmemory_expressions_usage ENABLE Controls which In-Memory Expressions are populated in-memory
inmemory_force DEFAULT Force tables to be in-memory or not
inmemory_graph_algorithm_execution DEFAULT Controls the fall-back action of graph algorithm execution if in-memor
inmemory_max_populate_servers 2 maximum inmemory populate servers
inmemory_optimized_arithmetic DISABLE Controls whether or not DSBs are stored in-memory
inmemory_optimized_date DISABLE Enables feature to accelerate date queries
inmemory_prefer_xmem_memcompress Prefer to store tables with given memcompress levels in xmem
inmemory_prefer_xmem_priority Prefer to store tables with given priority levels in xmem
inmemory_query ENABLE Specifies whether in-memory queries are allowed
inmemory_size 0 size in bytes of in-memory area
inmemory_trickle_repopulate_servers_percent 1 inmemory trickle repopulate servers percent
inmemory_virtual_columns MANUAL Controls which user-defined virtual columns are stored in-memory
inmemory_xmem_size 0 size in bytes of in-memory xmem area
instance_abort_delay_time 0 time to delay an internal initiated abort (in seconds)
instance_groups list of instance group names
instance_mode READ-WRITE indicates whether the instance read-only or read-write or read-mostly
instance_name cdb26ai instance name supported by the instance
instance_number 0 instance number
instance_type RDBMS type of instance to be executed
instant_restore FALSE instant repopulation of datafiles
iorm_limit_policy RM_PLAN Policy used to compute Exadata IORM limit
ipddb_enable FALSE Enable IPD/DB data collection
java_jit_enabled TRUE Java VM JIT enabled
java_max_sessionspace_size 0 max allowed size in bytes of a Java sessionspace
java_pool_size 0 size in bytes of java pool
java_restrict none Restrict Java VM Access
java_soft_sessionspace_limit 0 warning limit on size in bytes of a Java sessionspace
job_queue_processes 80 maximum number of job queue slave processes
json_behavior control json behaviors
json_expression_check off enable/disable JSON query statement check
kafka_config_file KSR pub/sub external message bus(KGMPS) CONFIGuration file
large_pool_size 0 size in bytes of large pool
ldap_directory_access NONE RDBMS's LDAP access option
ldap_directory_sysauth no OID usage parameter
license_max_sessions 0 maximum number of non-system user sessions allowed
license_max_users 0 maximum number of named users that can be created in the database
license_sessions_warning 0 warning level for number of non-system user sessions
listener_networks listener registration networks
load_without_compile none Load PL/SQL or Database objects without compilation
lob_signature_enable FALSE enable lob signature
local_listener local listener
lock_name_space lock name space used for generating lock names for standby/clone datab
lock_sga FALSE Lock entire SGA in physical memory
lockdown_errors RAISE Mode to ignore or raise PDB lockdown error
lockfree_reservation ON enable/disable lockfree reservation
log_archive_config log archive config
log_archive_dest archival destination text string
log_archive_dest_1 archival destination #1 text string
log_archive_dest_10 archival destination #10 text string
log_archive_dest_11 archival destination #11 text string
log_archive_dest_12 archival destination #12 text string
log_archive_dest_13 archival destination #13 text string
log_archive_dest_14 archival destination #14 text string
log_archive_dest_15 archival destination #15 text string
log_archive_dest_16 archival destination #16 text string
log_archive_dest_17 archival destination #17 text string
log_archive_dest_18 archival destination #18 text string
log_archive_dest_19 archival destination #19 text string
log_archive_dest_2 archival destination #2 text string
log_archive_dest_20 archival destination #20 text string
log_archive_dest_21 archival destination #21 text string
log_archive_dest_22 archival destination #22 text string
log_archive_dest_23 archival destination #23 text string
log_archive_dest_24 archival destination #24 text string
log_archive_dest_25 archival destination #25 text string
log_archive_dest_26 archival destination #26 text string
log_archive_dest_27 archival destination #27 text string
log_archive_dest_28 archival destination #28 text string
log_archive_dest_29 archival destination #29 text string
log_archive_dest_3 archival destination #3 text string
log_archive_dest_30 archival destination #30 text string
log_archive_dest_31 archival destination #31 text string
log_archive_dest_4 archival destination #4 text string
log_archive_dest_5 archival destination #5 text string
log_archive_dest_6 archival destination #6 text string
log_archive_dest_7 archival destination #7 text string
log_archive_dest_8 archival destination #8 text string
log_archive_dest_9 archival destination #9 text string
log_archive_dest_state_1 enable archival destination #1 state text string
log_archive_dest_state_10 enable archival destination #10 state text string
log_archive_dest_state_11 enable archival destination #11 state text string
log_archive_dest_state_12 enable archival destination #12 state text string
log_archive_dest_state_13 enable archival destination #13 state text string
log_archive_dest_state_14 enable archival destination #14 state text string
log_archive_dest_state_15 enable archival destination #15 state text string
log_archive_dest_state_16 enable archival destination #16 state text string
log_archive_dest_state_17 enable archival destination #17 state text string
log_archive_dest_state_18 enable archival destination #18 state text string
log_archive_dest_state_19 enable archival destination #19 state text string
log_archive_dest_state_2 enable archival destination #2 state text string
log_archive_dest_state_20 enable archival destination #20 state text string
log_archive_dest_state_21 enable archival destination #21 state text string
log_archive_dest_state_22 enable archival destination #22 state text string
log_archive_dest_state_23 enable archival destination #23 state text string
log_archive_dest_state_24 enable archival destination #24 state text string
log_archive_dest_state_25 enable archival destination #25 state text string
log_archive_dest_state_26 enable archival destination #26 state text string
log_archive_dest_state_27 enable archival destination #27 state text string
log_archive_dest_state_28 enable archival destination #28 state text string
log_archive_dest_state_29 enable archival destination #29 state text string
log_archive_dest_state_3 enable archival destination #3 state text string
log_archive_dest_state_30 enable archival destination #30 state text string
log_archive_dest_state_31 enable archival destination #31 state text string
log_archive_dest_state_4 enable archival destination #4 state text string
log_archive_dest_state_5 enable archival destination #5 state text string
log_archive_dest_state_6 enable archival destination #6 state text string
log_archive_dest_state_7 enable archival destination #7 state text string
log_archive_dest_state_8 enable archival destination #8 state text string
log_archive_dest_state_9 enable archival destination #9 state text string
log_archive_duplex_dest duplex archival destination text string
log_archive_format %t_%s_%r.dbf archival destination format
log_archive_max_processes 4 maximum number of active ARCH processes
log_archive_min_succeed_dest 1 minimum number of archive destinations that must succeed
log_archive_trace 0 Establish archive operation tracing level
log_buffer 8486912 redo circular buffer size
log_checkpoint_interval 0 # redo blocks checkpoint threshold
log_checkpoint_timeout 1800 Maximum time interval between checkpoints in seconds
log_checkpoints_to_alert FALSE log checkpoint begin/end to alert file
log_file_name_convert logfile name convert patterns and strings for standby/clone db
long_module_action TRUE Use longer module and action
main_workload_type OLTP Main workload type
mandatory_user_profile Enforce Mandatory Password Profile for multitenant database
max_auth_servers 25 Maximum size of auth pool
max_columns STANDARD maximum number of columns allowed in table or view
max_datapump_jobs_per_pdb AUTO maximum number of concurrent Data Pump Jobs per PDB
max_datapump_parallel_per_job AUTO maximum number of parallel processes per Data Pump Job
max_dispatchers max number of dispatchers
max_dump_file_size 1G Maximum size (in bytes) of dump file
max_idle_blocker_time 0 maximum idle time for a blocking session in minutes
max_idle_time 0 maximum session idle time in minutes
max_iops 0 MAX IO per second
max_mbps 0 MAX MB per second
max_pdbs 254 max number of pdbs allowed in CDB or Application ROOT
max_saga_duration 86400 default value for max saga duration
max_shared_servers max number of shared servers
max_string_size STANDARD controls maximum size of VARCHAR2, NVARCHAR2, and RAW types in SQL
memoptimize_pool_size 0 Size of cache for imoltp buffers
memoptimize_write_area_size 0 changes memoptimize write area size
memoptimize_writes HINT write data to IGA without memoptimize_write hint
memory_max_size 0 Maximum memory size
memory_max_target 0 Max size for Memory Target
memory_size 0 Target memory size
memory_target 0 Target size of Oracle SGA and PGA memory
mfa_duo_api_host MFA Duo API Host
mfa_oma_iam_domain_url MFA Oracle Mobile Authenticator IAM Domain Url
mfa_sender_email_displayname MFA Sender Email Displayname
mfa_sender_email_id MFA Sender Email Id
mfa_smtp_host MFA SMTP Host
mfa_smtp_port 587 MFA SMTP Port
min_auth_servers 1 Minimum size of auth pool
mle_prog_languages all Enable Multilingual Engine
multishard_query_data_consistency strong consistency setting for multishard queries
multishard_query_partial_results not allowed enable partial results for multishard queries
native_blockchain_features Native block chain enable/disable
nls_calendar NLS calendar system name
nls_comp BINARY NLS comparison
nls_currency NLS local currency symbol
nls_date_format NLS Oracle date format
nls_date_language NLS date language name
nls_dual_currency Dual currency symbol
nls_iso_currency NLS ISO currency territory name
nls_language AMERICAN NLS language name
nls_length_semantics BYTE create columns using byte or char semantics by default
nls_nchar_conv_excp FALSE NLS raise an exception instead of allowing implicit conversion
nls_numeric_characters NLS numeric characters
nls_sort NLS linguistic definition name
nls_territory AMERICA NLS territory name
nls_time_format time format
nls_time_tz_format time with timezone format
nls_timestamp_format time stamp format
nls_timestamp_tz_format timestamp with timezone format
noncdb_compatible FALSE Non-CDB Compatible
object_cache_max_size_percent 10 percentage of maximum size over optimal of the user session's object c
object_cache_optimal_size 51200000 optimal size of the user session's object cache in bytes
ofs_threads 4 Number of OFS threads
olap_page_pool_size 0 size of the olap page pool in bytes
one_step_plugin_for_pdb_with_tde FALSE Facilitate one-step plugin for PDB with TDE encrypted data
open_cursors 300 max # cursors per session
open_links 4 max # open links per session
open_links_per_instance 4 max # open links per instance
optimizer_adaptive_plans TRUE controls all types of adaptive plans
optimizer_adaptive_reporting_only FALSE use reporting-only mode for adaptive optimizations
optimizer_adaptive_statistics FALSE controls all types of adaptive statistics
optimizer_capture_sql_plan_baselines FALSE automatic capture of SQL plan baselines for repeatable statements
optimizer_capture_sql_quarantine FALSE enable automatic creation/update of sql quarantine configuration
optimizer_cross_shard_resiliency FALSE enables resilient execution of cross shard queries
optimizer_dynamic_sampling 2 optimizer dynamic sampling
optimizer_features_enable 23.1.0 optimizer plan compatibility parameter
optimizer_ignore_hints FALSE enables the embedded hints to be ignored
optimizer_ignore_parallel_hints FALSE enables embedded parallel hints to be ignored
optimizer_index_caching 0 optimizer percent index caching
optimizer_index_cost_adj 100 optimizer index cost adjustment
optimizer_inmemory_aware TRUE optimizer in-memory columnar awareness
optimizer_mode ALL_ROWS optimizer mode
optimizer_real_time_statistics FALSE optimizer real time statistics on conventional DML
optimizer_secure_view_merging optimizer secure view merging and predicate pushdown/movearound
optimizer_session_type NORMAL Controls Auto Index
optimizer_use_invisible_indexes FALSE Usage of invisible indexes (TRUE/FALSE)
optimizer_use_pending_statistics FALSE Control whether to use optimizer pending statistics
optimizer_use_sql_plan_baselines TRUE use of SQL plan baselines for captured sql statements
optimizer_use_sql_quarantine TRUE enable use of sql quarantine
os_authent_prefix ops$ prefix for auto-logon accounts
os_roles FALSE retrieve roles from the operating system
outbound_dblink_protocols ALL Outbound DBLINK Protocols allowed
parallel_adaptive_multi_user FALSE enable adaptive setting of degree for multiple user streams
parallel_degree_limit CPU limit placed on degree of parallelism
parallel_degree_policy MANUAL policy used to compute the degree of parallelism (MANUAL/LIMITED/AUTO/
parallel_execution_message_size 16384 message buffer size for parallel execution
parallel_force_local FALSE force single instance execution
parallel_instance_group instance group to use for all parallel operations
parallel_max_servers 80 maximum parallel query servers per instance
parallel_min_degree 1 controls the minimum DOP computed by Auto DOP
parallel_min_percent 0 minimum percent of threads required for parallel query
parallel_min_servers 8 minimum parallel query servers per instance
parallel_min_time_threshold AUTO threshold above which a plan is a candidate for parallelization (in se
parallel_servers_target 32 instance target in terms of number of parallel servers
parallel_threads_per_cpu 1 number of parallel execution threads per CPU
paranoid_concurrency_mode FALSE Enable strictly durable query data gets
pdb_file_name_convert PDB file name convert patterns and strings for create cdb/pdb
pdb_lockdown pluggable database lockdown profile
pdb_os_credential pluggable database OS credential to bind
pdb_template PDB template
pdc_file_size 4198400 size (in bytes) of the pmem direct commit file
permit_92_wrap_format FALSE allow 9.2 or older wrap format in PL/SQL
pga_aggregate_limit 4978638848 limit of aggregate PGA memory for the instance or PDB
pga_aggregate_target 2489319424 Target size for the aggregate PGA memory consumed by the instance
pkcs11_library_location PKCS#11 library location for Transparent Data Encryption
plscope_settings IDENTIFIERS:NONE plscope_settings controls the compile time collection, cross reference
plsql_ccflags PL/SQL ccflags
plsql_code_type INTERPRETED PL/SQL code-type
plsql_debug FALSE PL/SQL debug
plsql_function_dynamic_stats PREFERENCE Perform Dynamic Sampling for PL/SQL functions
plsql_implicit_conversion_bool FALSE PL/SQL: Implicit conversion for boolean
plsql_optimize_level 2 PL/SQL optimize level
plsql_v2_compatibility FALSE PL/SQL version 2.x compatibility flag
plsql_warnings DISABLE:ALL PL/SQL compiler warnings settings
pmem_filestore Persistent Memory Filestore list
pre_page_sga TRUE pre-page sga for process
priority_txns_high_wait_target 2147483647 Auto abort wait for high pri txns
priority_txns_medium_wait_target 2147483647 Auto abort wait for medium pri txns
priority_txns_mode ROLLBACK Modes for Priority Transactions feature
private_temp_table_prefix ORA$PTT_ Private temporary table prefix
processes 320 user processes
processor_group_name Name of the processor group that this instance should run in.
query_rewrite_enabled TRUE allow rewrite of queries using materialized views if enabled
query_rewrite_integrity enforced perform rewrite using materialized views with desired integrity
rdbms_server_dn RDBMS's Distinguished Name
read_only FALSE Restrict WRITE operations in user session
read_only_open_delayed FALSE if TRUE delay opening of read only files until first access
recovery_parallelism 0 number of server processes to use for parallel recovery
recyclebin on recyclebin processing
redo_transport_user Data Guard transport user when using password file
remote_dependencies_mode TIMESTAMP remote-procedure-call dependencies mode parameter
remote_listener remote listener
remote_login_passwordfile EXCLUSIVE password file usage parameter
remote_os_roles FALSE allow non-secure remote clients to use os roles
remote_recovery_file_dest default remote database recovery file location for refresh/relocate
replication_dependency_tracking TRUE tracking dependency for Replication parallel propagation
resource_limit TRUE master switch for resource limit
resource_manage_goldengate FALSE goldengate resource manager enabled
resource_manager_cpu_allocation 0 Resource Manager CPU allocation
resource_manager_cpu_scope INSTANCE_ONLY scope of CPU resource management
resource_manager_plan resource mgr top plan
result_cache_auto_blocklist ON whether to run the auto blocklisting algorithm
result_cache_execution_threshold 2 minimum executions before a PL/SQL function is cached
result_cache_integrity TRUSTED result cache deterministic PLSQL functions
result_cache_max_result 5 maximum result size as percent of cache size
result_cache_max_size 37748736 maximum amount of memory to be used by the cache
result_cache_max_temp_result 5 maximum temp per result as percent of total temp for result cache
result_cache_max_temp_size 377487360 maximum amount of temp space to be used
result_cache_mode MANUAL result cache operator usage mode
result_cache_remote_expiration 0 maximum life time (min) for any result using a remote object
resumable_timeout 0 set resumable_timeout
rman_restore_file_storage_metadata FALSE restore file's storage metadata
rollback_segments undo segment list
run_addm_for_awr_report NONE types of AWR snapshots for which ADDM can be run inside AWR report
saga_hist_retention 43200 default value for retention of completed sagas
saga_msg_framework classic_queue Queue type used in SAGA infrastructure
scheduler_follow_pdbtz FALSE Make scheduler objects follow PDB TZ
sec_max_failed_login_attempts 3 maximum number of failed login attempts on a connection
sec_protocol_error_further_action (DROP,3) TTC protocol error continue action
sec_protocol_error_trace_action TRACE TTC protocol error action
sec_return_server_release_banner FALSE whether the server retruns the complete version information
serial_reuse disable reuse the frame segments
service_names cdb26ai.example.com service names supported by the instance
session_cached_cursors 50 Number of cursors to cache in a session.
session_exit_on_package_state_error FALSE Request session to exit when PL/SQL package state is discarded
session_max_open_files 10 maximum number of open files allowed per session
sessions 504 user and system sessions
sga_max_size 7465861120 max total SGA size
sga_min_size 0 Minimum, guaranteed size of PDB's SGA
sga_target 0 Target size of SGA
shadow_core_dump partial Core Size for Shadow Processes
shard_apply_max_memory_size 0 SNR Apply max memory size in bytes
shard_enable_raft_follower_read FALSE enable read from follower replications units in a shard
shard_queries_restricted_by_key FALSE add shard key predicates to the query
shard_raft_logfile_size 1073741824 size of raft log file in byte
shared_memory_address 0 SGA starting address (low order 32-bits on 64-bit platforms)
shared_pool_reserved_size 73987522 size in bytes of reserved area of shared pool
shared_pool_size 0 size in bytes of shared pool
shared_server_sessions max number of shared server sessions
shared_servers 1 number of shared servers to start up
shrd_dupl_table_refresh_rate 60 duplicated table refresh rate (in seconds)
skip_unusable_indexes TRUE skip unusable indexes if set to TRUE
smtp_out_server utl_smtp server and port configuration parameter
soda_behavior control soda behaviors
sort_area_retained_size 0 size of in-memory sort work area retained between fetch calls
sort_area_size 65536 size of in-memory sort work area
spatial_vector_acceleration TRUE enable spatial vector acceleration
spfile /u01/app/oracle/prod server parameter file
uct/23.0.0/dbhome_1/
dbs/spfilecdb26ai.or
a
sql92_security TRUE require select privilege for searched update/delete
sql_error_mitigation on enables automatic error mitigation
sql_history_enabled FALSE SQL Query History is enabled when TRUE
sql_trace FALSE enable SQL trace
sql_transpiler OFF Enable SQL transpiler
sqltune_category DEFAULT Category qualifier for applying hintsets
ssl_wallet ssl_wallet
standby_db_preserve_states NONE Preserve state cross standby role transition
standby_file_management MANUAL if auto then files are created/dropped automatically on standby
standby_parse_limit_seconds 300 Standby parse time limit (seconds)
standby_pdb_source_file_dblink database link to standby source files
standby_pdb_source_file_directory standby source file directory location
star_transformation_enabled FALSE enable the use of star transformation
statement_redirect_service statement redirect service
statistics_level TYPICAL statistics level
streams_pool_size 0 size in bytes of the streams pool
sysdate_at_dbtimezone FALSE use DB timezone while computing sysdate and systimestamp value
tablespace_encryption MANUAL_ENABLE Tablepsace encryption in hybrid ADG
tablespace_encryption_default_algorithm AES256 default tablespace encryption block cipher mode
tablespace_encryption_default_cipher_mode XTS default tablespace encryption block cipher mode
tape_asynch_io TRUE Use asynch I/O requests for tape devices
target_pdbs 13 Parameter is a hint to adjust certain attributes of the CDB
tde_configuration Per-PDB configuration for Transparent Data Encryption
tde_key_cache FALSE Enable caching of TDE intermediate key
temp_undo_enabled FALSE is temporary undo enabled
thread 0 Redo thread to mount
threaded_execution FALSE Threaded Execution Mode
time_at_dbtimezone off use DB timezone when computing current time
timed_os_statistics 0 internal os statistic gathering interval in seconds
timed_statistics TRUE maintain internal timing statistics
timezone_version_upgrade_integrity enforced perform DST upgrade leveraging constraints with desired integrity
timezone_version_upgrade_online FALSE enable/disable time zone version upgrade online
trace_enabled TRUE enable in memory tracing
tracefile_content_classification DEFAULT enable output of trace record security label prefix
tracefile_identifier trace file custom identifier
transaction_recovery ENABLED Transaction recovery is enabled when set to ENABLED
transactions 554 max. number of concurrent active transactions
transactions_per_rollback_segment 5 number of active transactions per rollback segment
true_cache FALSE Enable True Cache
true_cache_config True cache config
txn_auto_rollback_high_priority_wait_target 2147483647 Auto abort wait for high pri txns
txn_auto_rollback_medium_priority_wait_target 2147483647 Auto abort wait for medium pri txns
txn_auto_rollback_mode ROLLBACK Modes for Priority Transactions feature
txn_priority HIGH Priority of a transaction in a session
undo_management AUTO instance runs in SMU mode if TRUE, else in RBU mode
undo_retention 900 undo retention in seconds
undo_tablespace UNDOTBS1 use/switch undo tablespace
unified_audit_common_systemlog Syslog facility and level for only common unified audit records
unified_audit_systemlog Syslog facility and level for Unified Audit
unified_audit_trail_exclude_columns NONE Exclude columns from unified_audit_trail
uniform_log_timestamp_format TRUE use uniform timestamp formats vs pre-12.2 formats
use_dedicated_broker NONE Use dedicated connection broker
use_large_pages TRUE Use large pages if available (TRUE/FALSE/ONLY)
user_dump_dest /u01/app/oracle/prod User process dump directory
uct/23.0.0/dbhome_1/
rdbms/log
vector_index_neighbor_graph_reload RESTART specifies whether HNSW reload is enabled
vector_memory_size 1073741824 size in bytes of vector memory area
vector_query_capture ON Specifies whether vector query capture is enabled
wallet_root wallet root instance initialization parameter
workarea_size_policy AUTO policy used to size SQL working areas (MANUAL/AUTO)
xml_client_side_decoding true enable/disable xml client-side decoding
xml_db_events enable are XML DB events enabled
xml_handling_of_invalid_chars raise_error Handle invalid chars during xmlelement
xml_params Parameters to alter xml behavior
[oracle@onpdb ~]$
[oracle@onpdb ~]$
[oracle@onpdb ~]$
[oracle@onpdb ~]$ ora params
NAME VALUE DESCRIPTION
-------------------------------------------------- -------------------- ----------------------------------------------------------------------
DBFIPS_140 FALSE Enable use of crypographic libraries in FIPS mode, public
_4030_dump_bitvec 4095 bitvec to specify dumps prior to 4030 error
_4031_dump_bitvec 67194879 bitvec to specify dumps prior to 4031 error
_4031_dump_interval 300 Dump 4031 error once for each n-second interval
_4031_max_dumps 100 Maximum number of 4031 dumps for this process
_4031_sga_dump_interval 3600 Dump 4031 SGA heapdump error once for each n-second interval
_4031_sga_max_dumps 10 Maximum number of SGA heapdumps
_AllowMultInsteadofDDLTrigger 0 Oracle internal parameter to allow multiple instead of DDL triggers
_EnableDDLTtriggerTracing FALSE enable ddl trigger tracing
_EnableShadowTypes FALSE enable shadow types
_ILM_FILTER_TIME 0 Upper filter time for ILM block compression
_ILM_FILTER_TIME_LOWER 0 Lower filter time for ILM block compression
_ILM_POLICY_NAME FALSE User specified ILM policy name
_NUMA_bind_mode default Numa bind mode
_NUMA_float_spawner FALSE float process spawner
_NUMA_instance_mapping Not specified Set of nodes that this instance should run on
_NUMA_pool_reservation_trace FALSE Show NUMA pool reservations at startup
_NUMA_pool_size Not specified aggregate size in bytes of NUMA pool
_PX_use_large_pool FALSE Use Large Pool as source of PX buffers
_REMOVE_INACTIVE_STANDBY_TDE_MASTER_KEY FALSE Remove Inactive Standby TDE Master Key
_REMOVE_STDBY_OLD_KEY_AFTER_CHECKPOINT_SCN TRUE Remove standby old key after checkpoint SCN
_STFForceTranslateOracleSQL FALSE if TRUE translation profile will translate Oracle SQL statements
_STFTranslateDynamicSQL FALSE if TRUE translation profile will translate dynamic SQL statements
_VIEW_DICTIONARY_ACCESSIBILITY FALSE View Dictionary Accessibility Support
__asm_max_connected_clients 3 The high water mark value for connected clients
__bct_last_dba_buffer_size 0 Last running dynamically resized dba buffer size, in bytes
__cnf 100 CNF
__data_transfer_cache_size 0 Actual size of data transfer cache
__datamemory_area_size 1073741824 Actual total size in bytes of inmemory area
__db_16k_cache_xmem_size_metadata 0 Size of extended cache metadata for 16k buffer pool
__db_2k_cache_xmem_size_metadata 0 Size of extended cache metadata for 2k buffer pool
__db_32k_cache_xmem_size_metadata 0 Size of extended cache metadata for 32k buffer pool
__db_4k_cache_xmem_size_metadata 0 Size of extended cache metadata for 4k buffer pool
__db_8k_cache_xmem_size_metadata 0 Size of extended cache metadata for 8k buffer pool
__db_cache_size 5150605312 Actual size of DEFAULT buffer pool for standard block size buffers
__db_cache_xmem_size_metadata 0 Size of extended memory metadata of DEFAULT buffer pool for standard b
__db_keep_cache_xmem_size_metadata 0 Size of extended cache metadata of KEEP buffer pool for standard block
__db_pmem_direct_map_size_metadata 0 Size of PMEM memory metadata of DEFAULT buffer pool for standard block
__db_recycle_cache_xmem_size_metadata 0 Size of extended memory metadata of recycle buffer pool for standard b
__dg_broker_service_names service names for broker use
__inmemory_ext_roarea 0 Actual size in bytes of inmemory ro extension area
__inmemory_ext_rwarea 0 Actual size in bytes of inmemory rw extension area
__inmemory_size 0 unused inmemory size dummy param for compatibility
__java_pool_size 0 Actual size in bytes of java pool
__kstrc_qa_credentials KSTRC credentials for QA mode
__large_pool_size 16777216 Actual size in bytes of large pool
__latch_test_param 0 latch test parameter
__maintenance_is_planned 0 Is maintenance scheduled soon?
__memoptimize_xmem_pool_size_metadata 0 Size of extended cache metadata of MEMOPTIMIZE buffer pool for standar
__oracle_base /u01/app/oracle ORACLE_BASE
__persistent_cl2_slave_size 0 Actual size of slave cluster flash cache for default block size
__pga_aggregate_target 2499805184 Current target size for the aggregate PGA memory consumed
__pre_update_rolling_rrp_compatibility pre update rrp enabled bug list
__previous_rolling_rrp_compatibility previous rrp enabled bug list
__reload_lsnr 0 reload listener
__rolling_list_int_param_spare1 list spare param 1
__rolling_list_int_param_spare2 list spare param 2
__rolling_list_string_param_spare3 default string list spare param 3
__rolling_rrp_boolean_param_spare1 FALSE spare boolean param 1
__rolling_rrp_compatibility rrp enabled bug list
__rolling_rrp_compatibility_homogeneity_check Enabled bugs are same in cluster
__rolling_rrp_disabled list of explicitly disabled rrp
__rolling_rrp_exceptions Exception rrp bug list
__rolling_rrp_int_spare1 0 Int spare param 1
__rolling_rrp_int_spare2 0 Int spare param 2
__rolling_rrp_intent_to_rollback FALSE Record intent to rollback
__rolling_rrp_last_enable_version 23.1.0 VSNNUM where enable_all changed param
__rolling_rrp_previous_last_enable_version previous last_enable param value
__rolling_rrp_simulate_binary_rrp 0 Test param to simulate binary RRP
__rolling_rrp_simulate_binary_rrp_with_cb 0 Test param to simulate binary RRP with callback
__rolling_rrp_simulate_one_off_rrp Test param to simulate rrp one-off list
__rolling_rrp_string_spare1 string spare param 1
__rolling_rrp_string_spare2 string spare param 2
__sess_template_test_attrs FALSE session template: include test attributes
__sga_current_size 0 Current size for PDB SGA
__sga_target 7465861120 Actual size of SGA
__shared_io_pool_size 134217728 Actual size of shared IO pool
__shared_pool_size 1056964608 Actual size in bytes of shared pool
__streams_pool_size 0 Actual size in bytes of streams pool
__unified_pga_pool_size 0 Actual size in bytes of unified pga pool
__wait_test_param 0 wait test parameter
_abort_on_mrp_crash FALSE abort database instance when MRP crashes
_abort_recovery_on_join FALSE if TRUE, abort recovery on join reconfigurations
_ac_enable_dscn_in_rac FALSE Enable Dependent Commit SCN tracking
_ac_strict_SCN_check FALSE enforce strict SCN check for AC replay across DG failover
_accept_versions List of parameters for rolling operation
_aco_disable_options 0 ACO feature disable options
_actgrp_spawn_offload FALSE action group spawn offload
_action_oldpasswd_logon_during_rollover NONE Action on logon using old password during gradual password rollover
_active_dgpdb TRUE active PDB dataguard
_active_dgpdb_qscn_count 100 active PDB dataguard query SCN service max count
_active_instance_count 1024 number of active instances in the cluster database
_active_session_idle_limit 5 active session idle limit
_active_session_legacy_behavior FALSE active session legacy behavior
_active_standby_fast_reconfiguration TRUE if TRUE optimize dlm reconfiguration for active/standby OPS
_adaptive_direct_read TRUE Adaptive Direct Read
_adaptive_direct_write TRUE Adaptive Direct Write
_adaptive_fetch_enabled TRUE enable/disable adaptive fetch in parallel group by
_adaptive_log_file_sync_high_switch_freq_threshold 3 Threshold for frequent log file sync mode switches (per minute)
_adaptive_log_file_sync_poll_aggressiveness 0 Polling interval selection bias (conservative=0, aggressive=100)
_adaptive_log_file_sync_sampling_count 128 Evaluate post/wait versus polling every N writes
_adaptive_log_file_sync_sampling_time 3 Evaluate post/wait versus polling every N seconds
_adaptive_log_file_sync_sched_delay_window 60 Window (in seconds) for measuring average scheduling delay
_adaptive_log_file_sync_use_polling_threshold 200 Ratio of redo synch time to expected poll time as a percentage
_adaptive_log_file_sync_use_postwait_threshold 50 Percentage of foreground load from when post/wait was last used
_adaptive_log_file_sync_use_postwait_threshold_agi 1001 Permille of foreground load from when post/wait was last used
ng
_adaptive_scalable_log_writer_disable_worker_thres 50 Percentage of overlap across multiple outstanding writes
hold
_adaptive_scalable_log_writer_enable_worker_aging 999900 Per million of redo gen rate when LGWR workers were last used
_adaptive_scalable_log_writer_enable_worker_thresh 200 Increase in redo generation rate as a percentage
old
_adaptive_scalable_log_writer_evaluation_fraction 100 Serial/parallel log writer evaluation fraction (in 10000ths)
_adaptive_scalable_log_writer_evaluation_interval 15 Serial/parallel log writer evaluation interval (in seconds)
_adaptive_scalable_log_writer_sampling_count 128 Evaluate single versus scalable LGWR every N writes
_adaptive_scalable_log_writer_sampling_time 3 Evaluate single versus scalable LGWR every N seconds
_adaptive_window_consolidator_enabled TRUE enable/disable adaptive window consolidator PX plan
_add_backup_diag_metablock 4 control creation of diag metablock
_add_col_optim_enabled TRUE Allows new add column optimization
_add_nullable_column_with_default_optim TRUE Allows add of a nullable column with default optimization
_add_stale_mv_to_dependency_list TRUE add stale mv to dependency list
_add_trim_for_nlssort TRUE add trimming for fixed char semantics
_addm_auto_actions_enabled TRUE determines if ADDM can automatically implement its recommendations
_addm_auto_enable TRUE governs whether ADDM gets run automatically after every AWR snapshot
_addm_skiprules comma-separated list of ADDM nodes to skip
_addm_version_check TRUE governs whether ADDM checks the input AWR snapshot version
_adg_adt_redirect_apply_lag_threshold 12000 Maximum centi-seconds of apply lag threshold
_adg_adt_redirect_catchup_wait_time 12000 Maximum centi-seconds for standby to catch up
_adg_auto_close_pdb TRUE ADG recovery auto close PDB upon PDB drop/unplug/rename marker
_adg_count_beyond_limit 0 Count the total number of objects if beyond redo marker length.
_adg_defer_segstat TRUE Defer the segment statistics update on standby.
_adg_distributed_lockmaster FALSE standby runs under ADG distributed lockmaster mode
_adg_influx_qscn_gap 0 maximum time gap between influx scn and qscn update in seconds
_adg_instance_recovery TRUE enable ADG instance recovery
_adg_objectlock_attempts 2 Maximum attempts for objectlock get on ADG
_adg_objectlock_maxnum 1000 The maximum limit of the objectlock number on ADG
_adg_objectlock_timeout 0 timeout for objectlock get on ADG in centiseconds
_adg_parselock_holder_throttle_timeout 10 number of seconds ADG parse lock holders timeout on long waits
_adg_parselock_timeout 0 timeout for parselock get on ADG in centiseconds
_adg_parselock_timeout_sleep 100 sleep duration after a parselock timeout on ADG in milliseconds
_adg_redirect_upd_to_primary_max_retries 500 max retries for ADT redirect to Primary from ADG
_adjust_literal_replacement FALSE If TRUE, we will adjust the SQL/PLUS output
_adr_migrate_runonce TRUE Enable/disable ADR Migrate Runonce action
_advanced_index_compression_cmp_options 0 advanced index compression cmp options
_advanced_index_compression_opt_options 0 advanced index compression opt options
_advanced_index_compression_options 0 advanced index compression options
_advanced_index_compression_options_value 0 advanced index compression options2
_advanced_index_compression_recmp_crsz 10 advanced index compression limit recomp cr
_advanced_index_compression_recmp_cusz 90 advanced index compression limit recomp cu
_advanced_index_compression_recmp_nprg 10 advanced index compression limit recomp pu
_advanced_index_compression_trace 0 advanced index compression trace
_advanced_index_compression_tst_options 0 advanced index compression tst options
_advanced_index_compression_umem_options 2147483647 advanced index compression umem options
_afd_disable_fence FALSE Disable AFD fencing
_affected_row_threshold_for_dst_upgrade_using_dml 100 affected row threshold for DST upgrade using DML
_affinity_on TRUE enable/disable affinity at run time
_age_block_batch_timeout_ms 1000 timeout before shipping out the batched age blockmessages in milliseco
_aged_out_cursor_cache_time 300 number of seconds an aged out session cached cursor stay in cache
_aggregation_optimization_settings 0 settings for aggregation optimizations
_ahub_data_file_loc AHub Data File Location
_aiowait_timeouts 100 Number of aiowait timeouts before error is reported
_alert_expiration 604800 seconds before an alert message is moved to exception queue
_alert_message_cleanup 1 Enable Alert Message Cleanup
_alert_message_purge 1 Enable Alert Message Purge
_alert_post_background 1 Enable Background Alert Posting
_alert_segment_size 50 Alert-log segment size in MBs (1024*1024)
_alert_segment_textfile TRUE Alert-log text-file also to be segmented
_alert_segments_max 20 Alert-log max segments to retain, 0 for unlimited
_all_shared_dblinks treat all dblinks as shared
_all_sync_restrict_list List of applications to ignore in all sync
_alloc_perm_as_free FALSE allocate permanent chunks as freeable
_allocate_creation_order FALSE should files be examined in creation order during allocation
_allocate_flashback_buffer FALSE Allocate flashback buffer at mount time even if flashback is off
_allocation_update_interval 3 interval at which successful search in L1 should be updated
_allow_abs_path_dir TRUE Allow absolute path for CREATE DIRECTORY
_allow_alertlog_write TRUE Allow writing to alert/debug log inside the PDB
_allow_cell_smart_scan_attr TRUE Allow checking smart_scan_capable Attr
_allow_cg_via_connect_string TRUE Allow consumer group to be specified via connect string
_allow_common_user_dblink TRUE Allow common user for fixed user database link inside the PDB
_allow_commutativity TRUE allow for commutativity of +, * when comparing expressions
_allow_compatibility_adv_w_grp FALSE allow advancing DB compatibility with guaranteed restore points
_allow_connected_user_dblink TRUE Allow connected user database link usage inside the PDB
_allow_convert_to_standby FALSE allow convert to standby to go through
_allow_cross_endian_dictionary FALSE Allow cross-endian data dictionary
_allow_cross_version_ddl 0 allow cross version DDL execution
_allow_ddl_in_fga_handler FALSE Allow DDLs inside FGA handler(for QA use only)
_allow_drop_snapshot_standby_grsp FALSE Allow dropping snapshot standby guaranteed restore point
_allow_drop_ts_with_grp FALSE Allow drop Tablespace with guaranteed restore points
_allow_error_simulation FALSE Allow error simulation for testing
_allow_fallback_to_dbkey FALSE if TRUE, allow fallback to dbkey
_allow_fga_mixed_mode FALSE write FGA records to fga_log$
_allow_file_1_offline_error_1245 FALSE don't signal ORA-1245 due to file 1 being offline
_allow_imc_adaptive_grow TRUE if TRUE, allow imc to grow adaptively in broker's auto tuning.
_allow_imc_adaptive_shrink TRUE if TRUE, allow imc to shrink adaptively in broker's auto tuning.
_allow_insert_with_update_check FALSE Allow INSERT as statement_types when update_check is FALSE
_allow_level_without_connect_by FALSE allow level without connect by
_allow_modify_lockdown FALSE Allow restricted operations like set lockdown inside the PDB
_allow_operator_access FALSE Allow cloud operator to access local user objects
_allow_privileged_session_dblink_conn FALSE Allow privileged session for dblink connection
_allow_read_only_corruption FALSE allow read-only open even if database is corrupt
_allow_resetlogs_corruption FALSE allow resetlogs even if it will cause corruption
_allow_same_cdb_refresh_switchover TRUE allow refresh switchover in one cdb
_allow_self_signed_cert FALSE Allow Self Signed Certificate for Outbound Communication
_allow_snr_cr FALSE allow cross-region SNR sharding deployment
_allow_snr_rac FALSE allow SNR sharding deployment with RAC databases
_allow_synonym_for_credential TRUE Allow public/private synonym for scheduler credential
_allow_sysosenv_context FALSE Allow OS Environment Variable Application Context
_allow_system_wallet TRUE Allow Usage of SYSTEM Wallet Path for Outbound Communication
_allow_terminal_recovery_corruption FALSE Finish terminal recovery even if it may cause corruption
_allow_traditional_audit_configuration FALSE allow traditional audit configuration
_allow_triggers_on_vpd_table FALSE Allow triggers on VPD protected table in DML
_allow_unenc_ts_without_tde_master_key FALSE if TRUE, allow unencrypted tablespace creation even when master key is
_allow_user$_col_update NONE List of user$ columns which are allowed to be updated
_allow_xdb_anonymous_logon FALSE Allow XDB anonymous logon
_allowed_pvf_owners List of schemas allowed to own password verification function
_alter_adg_redirect_behavior none Alter ADG's Redirection behavior
_alter_table_modify_column_nop_flags 1 Alter table modify column NOP flags
_alter_upgrade_signature_only FALSE alter table upgrade only sets signature
_alter_user_no_x_lock FALSE Refrain from taking X-lock for ALTER USER
_alternate_iot_leaf_block_split_points TRUE enable alternate index-organized table leaf-block split-points
_alternate_verifier Use alternate user's verifier.
_always_anti_join CHOOSE always use this method for anti-join when possible
_always_semi_join CHOOSE always use this method for semi-join when possible
_always_star_transformation FALSE always favor use of star transformation
_always_vector_transformation FALSE always favor use of vector transformation
_analyze_comprehensive FALSE Analyze comprehensive mode
_and_pruning_enabled TRUE allow partition pruning based on multiple mechanisms
_ansi_join_mv_rewrite_enabled TRUE enable/disable ansi join mv rewrite
_app_container_debug 0 Enable Debug tracing in Application container
_app_default_containers FALSE containers_default and container_map enabled by default on MDL applica
_app_ignore_errors TRUE ignore errors during containers() on application object
_app_replay_silent_errors FALSE silently ignore all errors during application sync
_appcont_error_convert ON Control if error should be converted
_application_purge_enabled TRUE Is an application purge allowed
_application_script FALSE Running an application script
_apppdb_multi_slave_sync FALSE Multiple slaves used during Application sync
_appqos_cdb_setting 0 QoSM CDB Performance Class Setting
_appqos_po_multiplier 1000 Multiplier for PC performance objective value
_appqos_qt 10 System Queue time retrieval interval
_approx_cnt_distinct_gby_pushdown choose perform group-by pushdown for approximate distinct count query
_approx_cnt_distinct_optimization 0 settings for approx_count_distinct optimizations
_approx_perc_sampling_err_rate 2 error rate percentage of approximate percentile using sampling
_approx_percentile_optimization 0 settings for approx_percentile optimization
_aps_flush_enabled FALSE Enable/Disable APS Flushing functionality
_apx_root_directory APX APX default root directory
_aq_Txn_ht_sz 1024 Message cache Txn Hash table size
_aq_addpt_batch_size 1 Add PT batch Size
_aq_bufop_svc_create 1 create queue service for buffered operations
_aq_ddl_lck_timeout 90 AQ DDL lock timeout
_aq_deq_flowcontrol 0 Deq flow control
_aq_dly_bkt 60 Delay Bucket Size
_aq_dq_prefetch_Siz 5 AQ PT DQ prefech Size
_aq_dqblocks_in_cache 0 deq blocks in cache
_aq_droppt_batch_size 5 Drop PT batch Size
_aq_free_list_pools 10 state object and transaction memory pools
_aq_init_shards 5 Minimum enqueue shards per queue at an instance
_aq_ipc_max_slave 10 maximum number of slaves for knlpipcm
_aq_latency_absolute_threshold 300 Absolute threshold greater than average latency
_aq_latency_relative_threshold 100 Relative threshold of average latency
_aq_lb_cycle 120 Time(seconds) between consecutive AQ load balancing efforts
_aq_lb_garbage_col_interval 600 AQ LB garbage collect interval
_aq_lb_stats_collect_cycle 45 Time(seconds) between consecutive AQ load statistics collection
_aq_lb_subht_bkt_ltch 32 AQ LB subscriber ht bucket latches
_aq_lb_subht_elm_ltch 128 AQ LB subscriber ht element latches
_aq_lookback_size 60 AQ PT Look Back Size
_aq_max_pdb_close_msg 1 Max Number of AQ Recovery Messages when pdb is closed
_aq_max_scan_delay 1500 Maximum allowable scan delay for AQ indexes and IOTs
_aq_opt_background_enabled TRUE AQ: OPT Operations Background enabled
_aq_opt_enabled TRUE AQ: OPT Operations enabled
_aq_opt_fudge_factor 500 AQ: OPT Fudge Factor for pre-fretching
_aq_opt_list_oper_latches 8 OPT subshard operation latches
_aq_opt_min_evict_memory 0 AQ: OPT LWM memory for eviction to stop
_aq_opt_preevict_dop 3 AQ: OPT Background: PreEvict Degree Of Parallelism
_aq_opt_prefetch_dop 3 AQ: OPT Background: Prefetch Degree Of Parallelism
_aq_opt_prefetch_horizon 60 AQ: OPT horizon for pre-fretching
_aq_opt_stat_window 21600 AQ: OPT Subscriber Statistics Window Size
_aq_opt_stop_stat FALSE AQ: OPT Stop Collection of Subscriber Statistics
_aq_pt_processes 10 Partition background processes
_aq_pt_shrink_frequency 60 PT shrink window Size
_aq_pt_statistics_window 60 PT statistics sample window Size
_aq_qt_prefetch_Size 5 AQ PT QT prefech Size
_aq_queue_global_service AQ queue global service
_aq_retry_timeouts 0 retry timeouts
_aq_scramble_deq 0 Scrambled Deq
_aq_scrambled_deqlog 1 scrambled deqlog
_aq_shard_bitmap_child_latches 32 Bitmap child latches
_aq_shard_child_latches 512 Shard child latches
_aq_shard_prty_latches 16 Shard priority child latches
_aq_shard_retry_child_latches 32 Retry child latches
_aq_shard_sub_child_Elem_latches 1024 Subscriber Element child latches
_aq_shard_sub_child_latches 512 Subscriber child latches
_aq_shard_txn_child_latches 128 Txn child latches
_aq_stop_backgrounds FALSE Stop all AQ background processes
_aq_streaming_threshold 10485760 large payload threshold size
_aq_subshard_Size 20000 Sub Shard Size
_aq_subshards_per_dqpartition 1 SubShards Per Deq Partition
_aq_subshards_per_qpartition 1 SubShards Per Q Partition
_aq_tm_deqcountinterval 0 dequeue count interval for Time Managers to cleanup DEQ IOT BLOCKS
_aq_tm_processes_dump_interval 12 Time(minutes) between consecutive Dumps in alert log
_aq_tm_scanlimit 0 scan limit for Time Managers to clean up IOT
_aq_tm_statistics_duration 0 statistics collection window duration
_aq_truncpt_batch_size 1 Trunc PT batch Size
_aq_uncached_stats 0 Uncached Stats
_aq_x_mode 1 AQ - cross mode
_aq_x_msg_size 32768 AQ cross single message buffer size
_aqsharded_cache_limit 0 Limit for cached enqueue/dequeue operations
_aqsharded_cache_policy_lowmem 0 AQ: caching policy in low memory
_aqsharded_cached_hint 0 sharded queue cached hint
_aqsharded_enq_fresh_ptn_reload TRUE start enqueueing to a fresh partition on reload
_aqsharded_lowmem_timeout 1000 sharded queue low mem timeout (in centiseconds)
_aqsharded_reload_tune 2 sharded queue tune reload behaviour
_arch_comp_dbg_scan 0 archive compression scan debug
_arch_comp_dec_block_check_dump 1 decompress archive compression blocks for checking and dumping
_arch_compress_checksums FALSE enable/disable row checksums for archive compressed blocks
_arch_compression TRUE archive compression enabled
_arch_io_slaves 0 ARCH I/O slaves
_array_cdb_view_enabled TRUE array mode enabled for CDB views
_array_update_vector_read_enabled FALSE Enable array update vector read
_ash_disk_filter_ratio 10 Ratio of the number of in-memory samples to the number of samples actu
_ash_disk_write_enable TRUE To enable or disable Active Session History flushing
_ash_dummy_test_param 0 Oracle internal dummy ASH parameter used ONLY for testing!
_ash_eflush_trigger 66 The percentage above which if the in-memory ASH is full the emergency
_ash_enable TRUE To enable or disable Active Session sampling and flushing
_ash_min_mmnl_dump 90 Minimum Time interval passed to consider MMNL Dump
_ash_progressive_flush_interval 300 ASH Progressive Flush interval in secs
_ash_sample_all FALSE To enable or disable sampling every connected session including ones w
_ash_sampling_interval 1000 Time interval between two successive Active Session samples in millise
_ash_size 1048618 To set the size of the in-memory Active Session History buffers
_asm_access auto ASM File access mechanism
_asm_access_assume_local FALSE Assume IOS client is in the same cluster as IOS
_asm_acd_chunks 1 initial ACD chunks created
_asm_admin_with_sysdba FALSE Does the sysdba role have administrative privileges on ASM?
_asm_allocation_secondary_tolerance 1 Per-partner secondary tolerance for allocation
_asm_allow_appliance_dropdisk_noforce FALSE Allow DROP DISK/FAILUREGROUP NOFORCE on ASM Appliances
_asm_allow_appliance_offlineonline FALSE Allow OFFLINE/ONLINE DISK/FAILUREGROUP on ASM Appliances
_asm_allow_dangerous_unprotected_volumes FALSE Disable checking for unprotected volumes in mirrored disk groups
_asm_allow_dgname_special_chars FALSE Enable the use of special characters in diskgroup names
_asm_allow_foreign_siteguids Disable checking for foreign siteguid on a given node
_asm_allow_lvm_resilvering TRUE Enable disk resilvering for external redundancy
_asm_allow_older_clients FALSE Allow older clients to connect to the ASM server
_asm_allow_only_raw_disks TRUE Discovery only raw devices
_asm_allow_prepare_split TRUE Allow database prepare and split in non-appliance mode
_asm_allow_small_memory_target FALSE Allow a small memory_target for ASM instances
_asm_allow_system_alias_rename FALSE if system alias renaming is allowed
_asm_allow_unsafe_reconnect TRUE attempt unsafe reconnect to ASM
_asm_allowdegeneratemounts FALSE Allow force-mounts of DGs w/o proper quorum
_asm_appliance_config_file Appliance configuration file name
_asm_appliance_disable_fg_check FALSE Disable failure group check
_asm_appliance_ignore_oak FALSE Ignore OAK appliance library
_asm_appliance_slot_from_path FALSE Get appliance disk slot from disk path
_asm_asmb_exa_rcvto 30 Receive timeout for ASMB in exadata env in seconds
_asm_asmb_max_wait_timeout 6 timeout before processes are signaled with network interrupt
_asm_asmb_rcvto 10 Receive timeout for ASMB in seconds
_asm_async_scrub_reap_wait 100000 Async scrubbing reaping IO wait in microseconds
_asm_ate_conversion_batch_size 1024 ATE conversion batch size
_asm_audit_sp_param ASM audit spare parameter
_asm_ausize 1048576 allocation unit size
_asm_auto_online_interval auto online interval
_asm_automatic_rezone TRUE automatically rebalance free space across zones
_asm_avoid_pst_scans TRUE Avoid PST Scans
_asm_bdbmr_max_ent_inprgrs 2000 Limit of BADFDA7A entries in progress of recovery
_asm_blksize 4096 metadata block size
_asm_br_listener_port 51521 Bitrotter listener port for testing purpose
_asm_brfuzz_ios_lsnrport 0 IOS listener port for fuzzing with Bitrotter
_asm_buffer_overlap_tracer FALSE Enables kfioBufOverlapTracer
_asm_cancel_alert_time 600 Wait time for I/O cancel alert message (in seconds)
_asm_cancel_delta 75000 Delta timeout for blocking big writes in milliseconds
_asm_cclient_cleanup_timeout 300 timeout before cleaning up remote cluster clients
_asm_check_for_misbehaving_cf_clients FALSE check for misbehaving CF-holding clients
_asm_checksum_migration_chunk_size 128 Number of asm metadata blocks for checksum migration in one batch
_asm_compatibility 23.1 default ASM compatibility level
_asm_dba_batch 500000 ASM Disk Based Allocation Max Batch Size
_asm_dba_spcchk_thld 100000 ASM Disk Based Allocation Space Check Threshold
_asm_dba_threshold 0 ASM Disk Based Allocation Threshold
_asm_dbmsdg_nohdrchk FALSE dbms_diskgroup.checkfile does not check block headers
_asm_dependency_under_cfenqueue TRUE Send dependency request if holding CF enqueue
_asm_diag_dead_clients FALSE diagnostics for dead clients
_asm_direct_con_expire_time 120 Expire time for idle direct connection to ASM instance
_asm_disable_amdu_dump FALSE Disable AMDU dump
_asm_disable_async_msgs FALSE disable async intra-instance messaging
_asm_disable_dangerous_failgroup_checking FALSE Disable checking for dubious failgroup configurations
_asm_disable_exadata_hard_appliance_check FALSE Disable Hard Appliance Mode Check during Diskgroup Creation
_asm_disable_failgroup_count_checking FALSE Disable checking for failure group count
_asm_disable_failgroup_size_checking FALSE Disable checking for failure group size
_asm_disable_multiple_instance_check FALSE Disable checking for multiple ASM instances on a given node
_asm_disable_patch_compat FALSE disable DG patch compatibility checks
_asm_disable_proact_client_cleanup FALSE disable proactive client cleanup
_asm_disable_profilediscovery FALSE disable profile query for discovery
_asm_disable_pstcard FALSE Disable pst cardinality layout checks
_asm_disable_request_tracer TRUE Disable kfioRqTracer
_asm_disable_smr_creation FALSE Do Not create smr
_asm_disable_ufg_dump FALSE disable terminated umbilicus diagnostic
_asm_disable_ufgmemberkill FALSE disable ufg member kill
_asm_disable_vtoc_check FALSE Disable vtoc/sector 0 check
_asm_disable_vxn_map_messages FALSE disable using vxn map messages
_asm_disk_repair_time 14400 seconds to wait before dropping a failing disk
_asm_diskerr_traces 2 Number of read/write errors per disk a process can trace
_asm_diskgroup_renew_timeout 20 timeout FENC will give former ASMB group owner to renew
_asm_diskgroups2 disk groups to mount automatically set 2
_asm_diskgroups3 disk groups to mount automatically set 3
_asm_diskgroups4 disk groups to mount automatically set 4
_asm_dump_split_pw 10 Seconds to wait before requesting dump of split pending writes
_asm_dynamic_timeout_interval 20 Dynamic timeout update intervals of 3 seconds
_asm_emulate_nfs_disk FALSE Emulate NFS disk test event
_asm_emulmax 10000 max number of concurrent disks to emulate I /O errors
_asm_emultimeout 0 timeout before emulation begins (in 3s ticks)
_asm_enable_batch_scrub TRUE Allow scrubbing verification to run in batch mode
_asm_enable_kfios FALSE Enable KFIOS module
_asm_enable_kfks FALSE Enable KFKS module
_asm_enable_lostwrite_scrub TRUE Allow lost write detection in scrubbing
_asm_enable_map_share TRUE Enable ASM extent map share
_asm_enable_multiple_asmb TRUE Allow the ASM client to have multiple ASMB background processes
_asm_enable_parity_scrub FALSE Allow scrubbing parity files
_asm_enable_parityfile_creation TRUE Enable parity files creation
_asm_enable_proxy_read_stats FALSE Enable ASM Proxy Read Stats
_asm_enable_proxy_read_validation FALSE Enable ASM Proxy Read Validation
_asm_enable_proxy_reads TRUE Enable ASM Proxy Reads
_asm_enable_pstreloc_on_rm FALSE Enable pst layout relocation on rolling migration
_asm_enable_repair_lostwrite_scrub FALSE Allow repairing lost write in scrubbing
_asm_enable_vfreloc_on_rm FALSE Enable voting file relocation on rolling migration
_asm_enable_xrov FALSE Enable XROV capability
_asm_evenread 2 ASM Even Read level
_asm_evenread_alpha 0 ASM Even Read Alpha
_asm_evenread_alpha2 0 ASM Even Read Second Alpha
_asm_evenread_faststart 0 ASM Even Read Fast Start Threshold
_asm_fail_random_rx FALSE Randomly fail some RX enqueue gets
_asm_fd_cln_idle_sess_twait 60000000 Idle session time wait to run ASM FD cleanup
_asm_fd_cln_on_fg TRUE ASM stale FD cleanup on foregrounds
_asm_fob_tac_frequency 9 Timeout frequency for FOB cleanup
_asm_force_parity_extent_check FALSE Force parity extent integrity check
_asm_force_paritycheck_rebalance FALSE Force parity extent integrity check during rebalance
_asm_force_proxy_reads FALSE Force ASM Proxy Reads
_asm_force_quiesce FALSE Force diskgroup quiescing
_asm_force_vam FALSE force VAM for external redundancy
_asm_formatpstau TRUE Format PST AU before use during relocation
_asm_frag_threshold 50 Percentage threshold before disk/diskgroup is deemed fragmented
_asm_global_dump_level 267 System state dump level for ASM asserts
_asm_hard_check TRUE H.A.R.D. check buffer before write operation
_asm_hbeatiowait 120 number of secs to wait for PST Async Hbeat IO return
_asm_hbeatwaitquantum 2 quantum used to compute time-to-wait for a PST Hbeat check
_asm_healthcheck_timeout 180 seconds until health check takes action
_asm_identify_advisory_locks 2 enables ASM file identify advisory locks
_asm_idn_processes 0 number of global open processes
_asm_imbalance_tolerance 3 hundredths of a percentage of inter-disk imbalance to tolerate
_asm_instlock_quota 0 ASM Instance Lock Quota
_asm_ios_network_domains 0 number of domains in ASM IOSERVER instance
_asm_ios_network_processes 0 number network processes per domain in ASM IOSERVER instance
_asm_iosconnect_timeout 0 Time (in 3secs multiples) before db gives up on connecting to IOS
_asm_iosfailover_freq 3 Frequency limit after which db gives up on failing over to IOS
_asm_iosfailover_timeout 5 Time window within which db tries to failover to IOS
_asm_iostat_latch_count 31 ASM I/O statistics latch count
_asm_iowp_max_async 0 maximum async IOs per IO worker process
_asm_kfdpevent 0 KFDP event
_asm_kill_unresponsive_clients TRUE kill unresponsive ASM clients
_asm_libraries ufs library search order for discovery
_asm_log_scale_rebalance FALSE Rebalance power uses logarithmic scale
_asm_lsod_bucket_size 67 ASM lsod bucket size
_asm_max_aux_cods 5 maximum number of auxiliary cods in sparse disk groups
_asm_max_clients 1000 maximum number of clients this IOS instance can service
_asm_max_cod_strides 10 maximum number of COD strides
_asm_max_connected_clients 3 The high water mark value for connected clients
_asm_max_kfsg_free_heap_perc 10 Max percentage of SGA memory reserved for kfsga free heap
_asm_max_kfsg_free_heap_size 524288000 Max buffer size reserved for kfsga free heap
_asm_max_occupied 90 Maximum percentage of disk occupied to check for fragmentation
_asm_max_parallelios 256 Maximum simultaneous outstanding IOs
_asm_max_redo_buffer_size 2097152 asm maximum redo buffer size
_asm_maxio 1048576 Maximum size of individual I/O request
_asm_min_compatibility 19.0 default mininum ASM compatibility level
_asm_min_occupied 75 Minimum percentage of disk occupied to check for fragmentation
_asm_netp_factor 0 number of network processes per net
_asm_netp_iosize 0 maximum io size
_asm_network_timeout 1 Keepalive timeout for ASM network connections
_asm_networks ASM network subnet addresses
_asm_no_shared_maplock FALSE No Shared MapLocks
_asm_node_number ASM node number
_asm_node_site_guid ASM site GUID of node
_asm_nodekill_escalate_time 180 secs until escalating to nodekill if fence incomplete
_asm_noevenread_diskgroups List of disk groups having even read disabled
_asm_oda_type ODA Type
_asm_odapremchk TRUE Check premature storage for ODA
_asm_offline_wait_timeout 300 Timeout for offline wait
_asm_offload_all FALSE Offload all write operations to Exadata cells, when supported
_asm_ownerid_trace_timeout 3600 ownerid tracing threshold in seconds
_asm_partner_target_disk_part 8 target maximum number of disk partners for repartnering
_asm_partner_target_fg_rel 4 target maximum number of failure group relationships for repartnering
_asm_preopen_mincnt 100 Minimum number of files to trigger preopen in DBW
_asm_preopen_workers 4 Number of workers for DBW preopen
_asm_primary_load 1 Number of cycles/extents to load for non-mirrored files
_asm_primary_load_cycles TRUE True if primary load is in cycles, false if extent counts
_asm_procs_trace_diskerr 5 Number of processes allowed to trace a disk failure
_asm_proxy_online_restart 0 Allow patching while ADVM volumes are online
_asm_proxy_startwait 60 Maximum time to wait for ASM proxy connection
_asm_pst_rsinfo 0 file redundancies to consider during PST liveness checks
_asm_pstonpartners TRUE Select ideal PST disks following partnership
_asm_quorum_hb TRUE Allow Quorum Disk Heartbeat
_asm_random_zone FALSE Random zones for new files
_asm_read_cancel DYNAMIC Read cancel timeout in milliseconds
_asm_read_cancel_back_out 5000 Time period in milliseconds when no reads are issued to a disk after a
_asm_read_cancel_dynamic_delta 20 Dynamic read timeout delta to multiply with median wait time
_asm_read_cancel_timeout_limit 15000 Timeout limit for dynamic read timeout update
_asm_read_cancel_timeout_min 5000 Minimum wait time for dynamic read timeout
_asm_rebalance_estimates_process TRUE Perform rebalance estimates in ARB-A process
_asm_rebalance_plan_size 120 maximum rebalance work unit
_asm_rebalance_rate_alpha 0 ASM Rebalance Rate Alpha
_asm_rebalance_rate_alpha2 0 ASM Rebalance Rate Fast Start Alpha
_asm_rebalance_rate_faststart 10 ASM Rebalance Rate Fast Start Intervals
_asm_rebalance_rate_interval 9000 Interval in millisec when to update rebalance rate
_asm_rebalance_secondary_tolerance 1 Per-partner secondary tolerance for rebalance
_asm_rebalance_space_errors 1000 number of out of space errors allowed before aborting rebalance
_asm_reloc_cic FALSE Allow relocation during rolling migration
_asm_reloc_restart_timeout 600 csecs before signaling ORA-15424 when waiting for orphans
_asm_relocation_async_lock_count 128 limit of asynchronous map locks during relocation
_asm_relocation_ignore_hard_failure 0 ignore HARD for relocation
_asm_relocation_scheme alloc_p2 alloc_s3 re ASM allocation / relocation scheme
b_p2 reb_s1 bal_p2 b
al_s3 prep_p2 prep_s
3
_asm_relocation_trace FALSE enable extent relocation tracing
_asm_remote_client_timeout 300 timeout before killing disconnected remote clients
_asm_repairquantum 60 quantum (in 3s) used to compute elapsed time for disk drop
_asm_reserve_slaves TRUE reserve ASM slaves for CF txns
_asm_resyncCkpt 6000 time in centiseconds to resync before flushing checkpoint
_asm_root_directory ASM ASM default root directory
_asm_runtime_capability_volume_support FALSE runtime capability for volume support returns supported
_asm_scrub_async TRUE Enable asynchronous scrubbing
_asm_scrub_disable_cod FALSE Disable scrubbing COD
_asm_scrub_limit AUTO ASM disk scrubbing power
_asm_scrub_max_cod_wait 5 Number of minutes to delay scrub COD recovery
_asm_scrub_strict FALSE Enable strict scrubbing mode
_asm_scrub_unmatched_dba 1024 Scrub maximum number of blocks with unmatched DBA
_asm_secondary_load 10000 Number of cycles/extents to load for mirrored files
_asm_secondary_load_cycles FALSE True if secondary load is in cycles, false if extent counts
_asm_serialize_volume_rebalance FALSE Serialize volume rebalance
_asm_shadow_cycle 3 Inverse shadow cycle requirement
_asm_shared_pool_latch_timeout 30 seconds before terminating inst if ASMB is waiting for shared pool lat
_asm_showpdb_asmtbl FALSE Allow asm table values to be shown in pdb
_asm_skip_cod_recovery_diskgroups ASM disk groups for which COD recovery is disabled
_asm_skip_dbfile_ios FALSE Skip I/Os to database files (do only ASM metadata I/O)
_asm_skip_diskval_check FALSE skip client side discovery for disk revalidate
_asm_skip_rename_check FALSE skip the checking of the clients for s/w compatibility for rename
_asm_skip_resize_check FALSE skip the checking of the clients for s/w compatibility for resize
_asm_slow_client_timeout_percentage 50 Percentage of the write cancel timeout to detect slow client.
_asm_ssd_max_timeout_limit 2400 Maximum timeout limit in secs for sysdump during ufg hang
_asm_storagemaysplit FALSE PST Split Possible
_asm_stripesize 131072 ASM file stripe size
_asm_stripewidth 8 ASM file stripe width
_asm_sync_rebalance FALSE Rebalance uses sync I/O
_asm_tcp_user_timeout 1 TCP_USER_TIMEOUT in minutes
_asm_trace_limit_timeout 30000 Time-out in milliseconds to reset the number of traces per disk and th
_asm_ufg_nw_wait_timeout 10 seconds to start health check on unresponsive clients
_asm_usd_batch 64 ASM USD Update Max Batch Size
_asm_wait_time 18 Max/imum time to wait before asmb exits
_asm_write_badfdata_in_contentcheck FALSE Write BADFDA7A in content check
_asm_write_cancel AUTO Write timeout in milliseconds
_asm_write_cancel_dynamic_delta 30 Dynamic write timeout delta to multiply with median wait time
_asm_write_cancel_timeout_limit 90000 Timeout limit for dynamic write timeout update
_asm_write_cancel_timeout_min 15000 Minimum wait time for dynamic write timeout
_asm_write_cancel_timeout_percentage 30 Percentage of the write timeout to wait before optional offline
_asm_xrov_cachelgio 1 ADVM cache large IO
_asm_xrov_nstats 0 Specify number of IOs before stats
_asm_xrov_nvios 24 Specify number of VIO processes
_asm_xrov_rsnmod 2 Specify 'reason' mode
_asm_xrov_single FALSE Enable single issues of IOs
_asm_zero_power_limit allow setting zero power limit
_asmsid asm ASM instance id
_assert_encrypted_tablespace_blocks TRUE if TRUE, assert encrypted tablespace blocks must be encrypted
_assert_invalidation 0 assert on invalidation of an object
_assert_single_current_buffer FALSE if TRUE, check and assert only one current buffer
_assm_auto_tracing_threshold 0 ASSM threshold to start space search tracing
_assm_default TRUE ASSM default
_assm_examination_blocks_threshold 8196 ASSM get space number of fuzzy blocks to examine
_assm_examination_enable_sla FALSE ASSM get space enable examination limits
_assm_examination_time_threshold 60 ASSM get space examination time threshold in seconds
_assm_force_fetchmeta FALSE enable metadata block fetching in ASSM segment scan
_assm_high_gsp_threshold 11024 Number of blocks rejected before growing segment
_assm_l1cleanout_throttle_time 3 L1 bitmap block cleanout throttle time in seconds
_assm_latency_sampling_frequency 0 ASSM Latency sampling frequency in seconds
_assm_low_gsp_threshold 10000 Number of blocks rejected before collecting stats
_assm_segment_extension_percent 100 Percent of full blocks after which segment is extended
_assm_segment_repair_bg TRUE ASSM Segment repair: bg enable
_assm_segment_repair_fg 0 ASSM Segment repair: fg
_assm_segment_repair_maxblks 4294967294 ASSM Segment repair: Max blocks per slave
_assm_segment_repair_timelimit 60 ASSM Segment repair: Max time in seconds per slave
_assm_space_cache_hb_expire 3 Seconds after which higher order bitmaps expire from space cache
_assm_space_cache_max_segments 1024 ASSM Maximum Segments to Track
_assm_test_force_rej 0 assm min number of blocks to cbk-reject
_assm_test_force_rej2 0 assm min number of blocks to kdt-reject
_assm_test_reentrant_gsp FALSE assm test reentrant gsp
_async_recovery_claims TRUE if TRUE, issue recovery claims asynchronously
_async_recovery_reads TRUE if TRUE, issue recovery reads asynchronously
_async_rta_broadcast FALSE asynchronously broadcast RTA boundary
_async_scn_sync OFF Asynchronous SCN Sync Setting
_async_ts_threshold 1 check tablespace thresholds asynchronously
_atp_block_size_default TRUE ATP setting block size to 8K
_audit_operator_access FALSE enable audit of Cloud Operator access
_auto_assign_cg_for_sessions FALSE auto assign CGs for sessions
_auto_bmr enabled enable/disable Auto BMR
_auto_bmr_bg_time 3600 Auto BMR Process Run Time
_auto_bmr_fc_time 60 Auto BMR Flood Control Time
_auto_bmr_file_header TRUE Enable Auto BMR for file header fix
_auto_bmr_max_rowno 1024 x$krbabrstat Max number of rows
_auto_bmr_noretry_window 1800 Auto BMR NoRetry Window
_auto_bmr_pub_timeout 10 Auto BMR Publish Timeout
_auto_bmr_req_timeout 60 Auto BMR Requester Timeout
_auto_bmr_sess_threshold 30 Auto BMR Request Session Threshold
_auto_bmr_sys_threshold 100 Auto BMR Request System Threshold
_auto_clustering FALSE enable auto clustering related processing
_auto_clustering_sqlset SQL tuning set for auto clustering processing
_auto_compression DISABLE CDB-level auto compression parameter
_auto_db_lost_write_protect_fsfo_lag_limit_percent 67 FastStartFailoverLagLimit percent for auto lost write protection
_auto_db_lost_write_protect_max_lag_secs 60 Max apply lag in seconds for auto lost write protection
_auto_dismount_on_pdb_close FALSE Enable implicit PDB dismount on PDB close
_auto_export_preplugin_backup TRUE auto export pre-plugin backup
_auto_im_batch_size 10 Auto IM batch size
_auto_im_cache_join_opt FALSE Enable Autonomous Cached Join Optimization
_auto_im_join_group FALSE Enable Autonomous Inmemory Join group
_auto_im_max_perf_candidates 3 Auto IM Max Performance Candidates Per AutoIM cycle
_auto_im_monitor_interval 1440 Auto IM Monitor Interval
_auto_im_optimized_arithmetic FALSE Enable Autonomous Inmemory Optimized Arithmetic
_auto_im_perf_threshold 10 Auto IM performance threshold
_auto_im_play_area 10 Auto IM play area
_auto_im_rac_enabled TRUE Enable Auto IM on RAC
_auto_im_task_mode 0 Enables Auto IM auto task to run in various modes
_auto_im_vector_gby_opt FALSE Enable Autonomous Vector Group By Optimization
_auto_manage_asm_diskgroup_power_limit_max Maximum ASM diskgroup power limit value
_auto_manage_asm_diskgroup_power_limit_min Minimum ASM diskgroup power limit value
_auto_manage_enable_offline_check TRUE periodically check for OFFLINE disks and attempt to ONLINE
_auto_manage_enable_smart_rebalance TRUE OFFLINE instead of DROP disk(s) when free space is not enough for reba
_auto_manage_exadata_disks TRUE Automate Exadata disk management
_auto_manage_infreq_tout 0 TEST: Set infrequent timeout action to run at this interval, unit is s
_auto_manage_ioctl_bufsz 8192 oss_ioctl buffer size, to read and respond to cell notifications
_auto_manage_max_num_cells_offline 65535 Max. number of offline cells allowed
_auto_manage_max_online_tries 3 Max. attempts to auto ONLINE an ASM disk
_auto_manage_num_pipe_msgs 1000 Max. number of out-standing msgs in the KXDAM pipe
_auto_manage_num_tries 2 Num. tries before giving up on a automation operation
_auto_manage_online_tries_expire_time 86400 Allow Max. attempts to auto ONLINE an ASM disk after lapsing this time
_auto_manage_power_limit_adjustment_disabled FALSE Disable ASM diskgroup power limit adjustment
_auto_manage_remount_eligible_dg TRUE Periodically check for dismounte DGs, but they have in CRSthe attribu
_auto_manage_smart_rebalance_grace_period_in_min 0 Number of minutes waited after ASM diskgroup free space increases and
_auto_manage_smart_rebalance_space_threshold 0 Percentage of ASM diskgroup free space required for rebalance
_auto_mv_enabled FALSE enable/disable Auto MV logic in the sql access advisor
_auto_rcv_pdb_open 1 enable automatic recovery during pdb open
_auto_rekey_during_mrcv TRUE enable automatic rekey during media recovery (deprecated)
_auto_start_on_connect_services List of new services to start on connect in a PDB
_auto_temp_shrink_pdb_floor 0 auto temp tablespace shrink pdb floor
_autocomp_allow_fudge 120 Auto optimize allow mode fudge factor in seconds
_autocomp_allow_purgetime 2419200 Time buffer for purging allow auto optimize observation data
_autocomp_enable_thres 20 DML activity threshold to switch from allow to enable autocomp
_autocomp_inact_pct 98 Sub-segment data inactivity percentage threshold
_autocomp_move_max_mb 128 KDZADO UFC batch size
_autocomp_observation_period 604800 Auto optimize allow mode observation period in seconds
_autocomp_rowstore 0 KDZADO rowstore
_autocomp_rowstore_quiesce_thres 500 KDZADO rowstore quiesce threshold
_autoconf_mv_rewrite_metadata TRUE enable/disable mv metadata auto config logic
_automatic_maintenance_test 0 Enable AUTOTASK Test Mode
_automemory_broker_interval 3 memory broker statistics gathering interval for auto memory
_autoptn_config DBMS_AUTO_PARTITION flags
_autoptn_costing FALSE DBMS_AUTO_PARTITION is compiling query for cost estimates
_autoptn_flags 0 DBMS_AUTO_PARTITION flags
_autoptn_translate_table_name DBMS_AUTO_PARTITION table name translation
_autoptn_workload_id 0 DBMS_AUTO_PARTITION workload id
_autosts_capture_control 3 internal controls for auto STS capture
_autosts_long_interval 0 Auto STS long flush interval
_autosts_retention_interval 31 Auto STS retention interval
_autosts_short_interval 300 Auto STS short flush interval
_autotask_max_window 480 Maximum Logical Maintenance Window Length in minutes
_autotask_min_window 15 Minimum Maintenance Window Length in minutes
_autotask_test_action 0 test action parameter for AUTOTASK
_autotask_test_name N/A Name of current Autotask Test (or test step)
_autotbs_management_enabled FALSE allow automatic tablespace management
_autotbs_quota_override FALSE Override Auto TableSpace During Tablespace Quota DDLs
_autotune_gtx_idle_time 600 idle time to trigger auto-shutdown a gtx background process
_autotune_gtx_interval 5 interval to autotune global transaction background processes
_autotune_gtx_threshold 60 auto-tune threshold for degree of global transaction concurrency
_aux_dfc_keep_time 1440 auxiliary datafile copy keep time in minutes
_aux_storage_size 0 Auxillary storage for PDB.
_available_core_count 0 number of cores for this instance
_avoid_scn_growth 1 enable scn growth optimizations
_awr_adg_flush_method SYSTEM_DEFINED AWR ADG Flush Method
_awr_cdbperf_threshold 21 Setting for AWR CDBPERF Threshold
_awr_colored_app_enabled FALSE Enable/Disable AWR Colored Application functionality
_awr_corrupt_mode FALSE AWR Corrupt Mode
_awr_data_masking FALSE Enable/Disable AWR data masking functionality
_awr_disabled_flush_tables Disable flushing of specified AWR tables
_awr_disabled_purge_tables Disable purging of specified AWR tables
_awr_enable_pdb_snapshots TRUE Enable/Disable AWR PDB level snapshots
_awr_flush_threshold_metrics TRUE Enable/Disable Flushing AWR Threshold Metrics
_awr_flush_workload_metrics FALSE Enable/Disable Flushing AWR Workload Metrics
_awr_hub_autoimp_inline FALSE Enable/Disable AutoIMP in the same session handling requests
_awr_hub_consumer_group ORA$AUTOTASK Setting of Hub Consumer Group
_awr_hub_num_conc_imp 2 Setting for the number of concurrent IMP tasks at a Hub Server
_awr_incremental_flush_enabled TRUE Enable/Disable AWR automatic incremental flushing
_awr_max_registrations 1024 maximum number of registered dbids in AWR
_awr_metrics_use_mmnl FALSE Use MMNL or other background process for AWR metrics
_awr_mmon_cpuusage TRUE Enable/disable AWR MMON CPU Usage Tracking
_awr_mmon_deep_purge_all_expired FALSE Allows deep purge to purge AWR data for all expired snapshots
_awr_mmon_deep_purge_extent 7 Set extent of rows to check each deep purge run
_awr_mmon_deep_purge_interval 7 Set interval for deep purge of AWR contents
_awr_mmon_deep_purge_numrows 5000 Set max number of rows per table to delete each deep purge run
_awr_overflow_enabled FALSE Enable/Disable AWR Overflow functionality
_awr_partition_interval 0 Setting for AWR Partition Interval
_awr_pdb_registration_enabled FALSE Parameter to enable/disable AWR PDB Registration
_awr_report_gen_method ADVANCED AWR Report Generation Method
_awr_report_group_select AWR Report Select Groups
_awr_restrict_mode FALSE AWR Restrict Mode
_awr_snapshot_level BESTFIT Set Default AWR snapshot level
_awr_sql_child_limit 200 Setting for AWR SQL Child Limit
_awr_sqltext_redaction FALSE Enable/Disable AWR SQL Text Redaction
_awr_warehouse_enabled TRUE Enable/Disable AWR warehouse functionality
_awrextr_include_sqlmon FALSE Enable/disable including SQLMon data in AWR Extract
_b_tree_bitmap_plans TRUE enable the use of bitmap plans for tables w. only B-tree indexes
_ba_cf_trace_buffer_size 131072 size of per-process I/O KBC trace buffer
_ba_container_filesystem_ausize 4194304 allocation unit size for Backup Appliance containers
_ba_max_containers 0 maximum number of Backup Appliance containers
_ba_max_groups 0 maximum number of Backup Appliance container groups
_ba_max_seg_bytes 4000 maximum number of bytes per array segment
_ba_timeouts_enabled TRUE enable timeouts
_background_process_opts 0 Misc BG procs parameter
_backup_align_write_io TRUE align backup write I/Os
_backup_appliance_enabled FALSE Backup Appliance Enabled
_backup_automatic_retry 10 automatic retry on backup write errors
_backup_block0 default backup block0
_backup_bool_spare1 FALSE backup bool spare1
_backup_bool_spare2 FALSE backup bool spare2
_backup_bool_spare3 FALSE backup bool spare3
_backup_bool_spare4 FALSE backup bool spare4
_backup_compress FALSE turn on backup compression always
_backup_disk_bufcnt 0 number of buffers used for DISK channels
_backup_disk_bufsz 0 size of buffers used for DISK channels
_backup_disk_io_slaves 0 BACKUP Disk I/O slaves
_backup_dynamic_buffers TRUE dynamically compute backup/restore buffer sizes
_backup_encrypt_opt_mode 4294967294 specifies encryption block optimization mode
_backup_file_bufcnt 0 number of buffers used for file access
_backup_file_bufsz 0 size of buffers used for file access
_backup_int_spare1 4294967294 backup int spare1
_backup_int_spare2 4294967294 backup int spare2
_backup_int_spare3 4294967294 backup int spare3
_backup_int_spare4 4294967294 backup int spare4
_backup_interrupt_wait_time 1000 specifies interrupt wait time in centi seconds
_backup_io_pool_size 1048576 memory to reserve from the large pool
_backup_kgc_bz2_bufsz 0 specifies buffer size to be used by BZ2 compression
_backup_kgc_bz2_niters 0 specifies number of iterations done by BZ2 compression
_backup_kgc_bz2_type 0 specifies type used by BZ2 compression
_backup_kgc_bzip2_blksiz 9 specifies buffer size to be used by BZIP2 compression
_backup_kgc_lzo_bufsz 262144 specifies buffer size to be used by LZO compression
_backup_kgc_medium_scheme DEFAULT specifies medium compression scheme
_backup_kgc_scheme ZLIB specifies compression scheme
_backup_kgc_zlib_complevel 1 specifies compression (performance) level for ZLIB compression
_backup_kgc_zlib_memlevel 8 specifies memory level for ZLIB compression
_backup_kgc_zlib_windowbits 15 specifies window size for ZLIB compression
_backup_kgc_zstd_bufsz 262144 specifies buffer size to be used by ZSTD compression
_backup_kgc_zstd_complevel 3 specifies compression (performance) level for ZSTD compression
_backup_kgc_zstd_high_complevel 14 specifies compression (performance) level for ZSTD compression
_backup_ksfq_bufcnt 0 number of buffers used for backup/restore
_backup_ksfq_bufmem_max 268435456 maximum amount of memory (in bytes) used for buffers for backup/restor
_backup_ksfq_bufsz 0 size of buffers used for backup/restore
_backup_max_gap_size 4294967294 largest gap in an incremental/optimized backup buffer, in bytes
_backup_max_wallet_session 50 specifies maximum wallet session for backup
_backup_min_ct_unused_optim 2097152 mimimun size in bytes of change tracking to apply unused space optimuz
_backup_seq_bufcnt 0 number of buffers used for non-DISK channels
_backup_seq_bufsz 0 size of buffers used for non-DISK channels
_backup_text_spare1 backup text spare1
_backup_text_spare2 backup text spare2
_backup_text_spare3 backup text spare3
_backup_text_spare4 backup text spare4
_bct_auto_ctf_shrink FALSE allow change tracking file shrink on resize
_bct_bitmaps_per_file 8 number of bitmaps to store for each datafile
_bct_buffer_allocation_max 1073741824 maximum size of all change tracking buffer allocations, in bytes
_bct_buffer_allocation_min_extents 1 mininum number of extents to allocate per buffer allocation
_bct_buffer_allocation_size 2097152 size of one change tracking buffer allocation, in bytes
_bct_chunk_size 0 change tracking datafile chunk size, in bytes
_bct_crash_reserve_size 262144 change tracking reserved crash recovery SGA space, in bytes
_bct_dba_buffer_reap_threshold 2000 threshold for reaping changes per strand at a time
_bct_ext_alo_count 320 extent granule size to use during ctf resize
_bct_ext_min_count 320 min extents to allocate in change tracking file
_bct_file_block_size 0 block size of change tracking file, in bytes
_bct_file_extent_size 0 extent size of change tracking file, in bytes
_bct_fixtab_file change tracking file for fixed tables
_bct_health_check_interval 0 CTWR health check interval (seconds), zero to disable
_bct_imt_suppress_charset_validation 3 blockchain/immutable table character validation level
_bct_min_switch_freq 43200 Min time interval between bitmap switches in seconds
_bct_mrp_timeout 5 CTWR MRP wait timeout (seconds), zero to wait forever
_bct_public_dba_buffer_dynresize 2 allow dynamic resizing of public dba buffers, zero to disable
_bct_public_dba_buffer_dynresize_delay 3600 control frequency of dynamic resizing of public dba buffers
_bct_public_dba_buffer_maxsize 0 max buffer size permitted for public dba buffers, in bytes
_bct_public_dba_buffer_size 0 total size of all public change tracking dba buffers, in bytes
_bct_wait_before_trace_dump 120 seconds after which BCT would dump traces for debugging
_bctab_max_system_chains 1024 blockchain table's maximum number of system chains
_bctab_optimize_commit_performance FALSE optimize blockchain table commit performance
_beirut_timeout_minutes 10 beirut wait timeout in minutes
_bequeath_via_broker FALSE Bequeath connections via broker
_bg_dgpdb_rcv_parallelism 0 BG DGPDB recovery parallelism
_bg_spawn_diag_opts 0 background processes spawn diagnostic options
_big_scn_test_mode 2 testing mode for BigSCN
_bigdata_external_table TRUE enables use of ORACLE_HIVE and ORACLE_HDFS access drivers
_bigdata_offload_flag FALSE BigDataSQL offload flag
_bigram_dependency_percentage 5 Bigram dependency percentage
_bind_undotbs DISABLED Bind to undo tbs according to size
_bitmap_or_improvement_enabled TRUE controls extensions to partition pruning for general predicates
_block_change_tracking_file file location for broker to reenable BCT
_block_corruption_track_limit 1000 block corruption track limit
_block_dump_assert FALSE Encrypted block dump assert
_block_level_offload_high_lat_thresh 40000 High Latency Threshold for Block Level Offload operations
_block_sample_readahead_prob_threshold 10 controls readahead value during block sampling
_blockchainHeapSize 0 Set the heap size in bytes for blockchain
_blockchainTracing 0 Set tracing for blockchain
_blockchain_forced_off NOT_SET force off blockchain
_blockchain_immutable_table blockchain/immutable table behavior
_blockchain_txn_apis_enabled TRUE If true, the txn layer blockchain API'S kick in
_blockchain_txn_test_lvl 0 blockchain txn test lvl
_blockhm_flush_period 3600 Block heat map background flush period
_blocking_sess_graph_cache_size blocking session graph cache size in bytes
_blocks_per_cache_server 1 number of consecutive blocks per global cache server
_bloom_extent_size 0 bloom filter extent size in bytes
_bloom_filter_debug 0 debug level for bloom filtering
_bloom_filter_enabled TRUE enables or disables bloom filter
_bloom_filter_multi_bit FALSE Multi-bit bloom filter
_bloom_filter_ratio 35 bloom filter filtering ratio
_bloom_filter_setops_enabled TRUE Allow bloom filter to be pushed through set operations
_bloom_filter_size 0 bloom filter vector size (in KB)
_bloom_folding_density 16 bloom filter folding density lower bound
_bloom_folding_enabled TRUE Enable folding of bloom filter
_bloom_folding_min 0 bloom filter folding size lower bound (in KB)
_bloom_max_size 262144 maximum bloom filter size (in KB)
_bloom_max_wait_time 50 bloom filter wait time upper bound (in ms)
_bloom_minmax_enabled TRUE enable or disable bloom min max filtering
_bloom_predicate_enabled TRUE enables or disables bloom filter predicate pushdown
_bloom_predicate_offload TRUE enables or disables bloom filter predicate offload to cells
_bloom_pruning_enabled TRUE Enable partition pruning using bloom filtering
_bloom_pruning_setops_enabled TRUE Allow bloom pruning to be pushed through set operations
_bloom_pushing_folding_density 4 bloom filter pushing folding density lower bound pushing to sage
_bloom_pushing_max 512 bloom filter pushing size upper bound (in KB)
_bloom_pushing_total_max 20971520 bloom filter combined pushing size upper bound (in KB)
_bloom_rm_filter FALSE remove bloom predicate in favor of zonemap join pruning predicate
_bloom_serial_filter ON enable serial bloom filter on exadata
_bloom_sm_enabled TRUE enable bloom filter optimization using slave mapping
_bloom_use_shared_pool FALSE use shared pool for bloom filter
_bloom_wait_on_rac FALSE enables bloom filter (with hash hash distribution) wait on RAC
_boc_mode AUTO Broadcast-on-commit mode
_boc_rdma_wait_time 0 BOC RDMA busy wait time (microseconds)
_bps_sanity_checks FALSE enable BPS sanity checks
_branch_tagging TRUE enable branch tagging for distributed transaction
_broadcast_scn_mode 1 broadcast-on-commit scn mode
_broadcast_scn_wait_timeout 10 broadcast-on-commit scn wait timeout in centiseconds
_broker_imc_max_utilstep 95 max util percentage for imc by bg auto tuning.
_bsln_adaptive_thresholds_enabled TRUE Adaptive Thresholds Enabled
_bt_mmv_query_rewrite_enabled TRUE allow rewrites with multiple MVs and base tables
_buddy_instance 1 buddy instance control
_buddy_instance_num_read_buffers 4 Num of Read Buffers to scan everytime in Buddy Instance feature
_buddy_instance_scan_phase_threshold 3 Threshold (in secs) to let RMS0 construct the recovery set
_buddy_instance_start_rba_timeout 9 Time-out for re-computing Start RBA in Buddy Instance feature
_buffer_busy_wait_timeout 100 buffer busy wait time in centiseconds
_buffer_requests_to_drain 5 Buffer for requests to drain before planned failover
_buffered_message_spill_age 300 Buffered message spill age
_buffered_publisher_flow_control_threshold 0 Flow control threshold for buffered publishers except capture
_bufq_stop_flow_control FALSE Stop enforcing flow control for buffered queues
_build_deferred_mv_skipping_mvlog_update TRUE DEFERRED MV creation skipping MV log setup update
_bump_highwater_mark_count 0 how many blocks should we allocate per free list on advancing HWM
_bwr_for_flushed_pi TRUE if TRUE, generate a BWR for a flushed PI
_bypass_sensitive_context FALSE bypass sensitive handling for specific SYS_CONTEXT() parameters
_bypass_srl_for_so_eor FALSE bypass SRL for S/O EOR logs
_bypass_xplatform_error FALSE bypass datafile header cross-platform-compliance errors
_c3_external_scn_rejection_threshold_hours 4464 Lag in hours between max allowed SCN and an external SCN
_cache_fusion_pipelined_updates TRUE Configure smart fusion block transfer
_cache_fusion_pipelined_updates_enable Enable smart fusion block transfer
_cache_lobs_pga_limit 75 Set the percentage limit in the PGA aggregate use to create LOBs in ca
_cache_orl_during_open ALL cache online logs
_cache_stats_monitor FALSE if TRUE, enable cache stats monitoring
_capability_simulate Simulate the capabilities for testing
_capture_buffer_size 65536 To set the size of the PGA I/O recording buffers
_capture_pgadep 0 capture statements at this pgadep
_capture_publisher_flow_control_threshold 0 Flow control threshold for capture publishers
_case_sensitive_logon TRUE case sensitive logon enabled
_catalog_foreign_restore FALSE catalog foreign file restore
_catalog_soft_assert_diag FALSE Soft assert with diag info for catalog app
_causal_standby_wait_timeout 20 Causal standby wait timeout
_cdb_compatible TRUE CDB Compatible
_cdb_cross_container 65535 Debug flag for cross container operations
_cdb_disable_pdb_limit FALSE CDB Compatible
_cdb_fleet_sync_timeout 10 Time in minutes to wait for sync of stub entry in CDB Fleet
_cdb_init_batch_size 100 Batch size for reading pdb info during CDB mount
_cdb_port 0 Port number for CDB Servlet
_cdb_rac_affinity TRUE rac affinity for parallel cdb operations
_cdb_special_old_xplan FALSE display old-style plan for CDB special fixed table
_cdb_spfile_inherit FALSE Inherit CDB Spfile enabled/disabled in a PDB
_cdb_svlt_use_tcps FALSE Use TCPS for CDB Servlet
_cdb_view_no_skip_migrate FALSE do not skip OPEN MIGRATE PDBs from results of CONTAINERS()
_cdb_view_no_skip_restricted FALSE do not skip RESTRICTED mode PDBs from results of CONTAINERS()
_cdb_view_parallel_degree 65535 Parallel degree for a CDB view query
_cdb_view_prefetch_batch_size 200 Batch Size for Prefetch for a CDB view query
_cdb_view_rc_shelflife 30 Result Cache Shelflife for a CDB view query
_cdb_view_recursive_px_enabled TRUE enable parallelism of recursive SQL under CONTAINERS()
_cdb_view_serial_ok FALSE is serial OK for cross-container
_cdc_subscription_owner Change Data Capture subscription_owner
_cdmp_diagnostic_level 2 cdmp directory diagnostic level
_cell_fast_file_create TRUE Allow optimized file creation path for Cells
_cell_fast_file_restore TRUE Allow optimized rman restore for Cells
_cell_file_format_chunk_size 0 Cell file format chunk size in MB
_cell_index_scan_enabled TRUE enable CELL processing of index FFS
_cell_iot_scan_enabled TRUE enable CELL processing of IOT FFS
_cell_materialize_all_expressions FALSE Force materialization of all offloadable expressions on the cells
_cell_materialize_virtual_columns TRUE enable offload of expressions underlying virtual columns to cells
_cell_metadata_compression AUTO Cell metadata compression strategy
_cell_object_expiration_hours 24 flashcache object expiration timeout
_cell_offload_capabilities_enabled 1 specifies capability table to load
_cell_offload_complex_processing TRUE enable complex SQL processing offload to cells
_cell_offload_expressions TRUE enable offload of expressions to cells
_cell_offload_grand_total TRUE allow offload of grand total aggregations
_cell_offload_hybrid_processing TRUE enable hybrid SQL processing offload to cells
_cell_offload_hybridcolumnar TRUE Query offloading of hybrid columnar compressed tables to exadata
_cell_offload_predicate_reordering_enabled FALSE enable out-of-order SQL processing offload to cells
_cell_offload_sys_context TRUE enable offload of SYS_CONTEXT evaluation to cells
_cell_offload_timezone TRUE enable timezone related SQL processing offload to cells
_cell_offload_vector TRUE Query offloading of vector operators to exadata
_cell_offload_vector_groupby TRUE enable SQL processing offload of vector group by
_cell_offload_vector_groupby_external TRUE enable cell offload of vector group by with external tables
_cell_offload_vector_groupby_fact_key TRUE enable cell offload of vector group by with fact grouping keys
_cell_offload_vector_groupby_force FALSE force offload of vector group by
_cell_offload_vector_groupby_withnojoin TRUE allow offload of vector group by without joins
_cell_offload_virtual_columns TRUE enable offload of predicates on virtual columns to cells
_cell_range_scan_enabled TRUE enable CELL processing of index range scans
_cell_storidx_minmax_enabled TRUE enable Storage Index Min/Max optimization on the cells
_cell_storidx_mode EVA Cell Storage Index mode
_cell_trace_size 0 max trace size in bytes shipped back to server per filtering task
_cellcache_clause_default Default cellcache clause for new tables
_cellcache_default_flags 2 Default flags based on cellcache_clause_default
_cellcache_default_new FALSE Force cellcache on new tables
_cenv_check_for_internal_pdb_switch FALSE do compilation env check while in internal PDB switch
_cgs_allgroup_poll_time 20000 CGS DBALL group polling interval in milli-seconds
_cgs_big_group_enabled FALSE big group membership support
_cgs_clscevents_dumpinterval 600 cgs clsce events statistics dump interval in seconds
_cgs_combine_css_events 31 CGS registration flags for CSS event combining
_cgs_comm_readiness_check 1 CGS communication readiness check
_cgs_dball_group_registration local CGS DBALL group registration type
_cgs_dbgroup_poll_time 600 CGS DB group polling interval in milli-seconds
_cgs_health_check_in_reconfig FALSE CGS health check during reconfiguration
_cgs_memberkill_from_rim_instance FALSE allow a RIM instance to issue a CSS member kill
_cgs_msg_batch_size 4096 CGS message batch size in bytes
_cgs_msg_batching TRUE CGS message batching
_cgs_node_kill_escalation TRUE CGS node kill escalation to CSS
_cgs_node_kill_escalation_wait 0 CGS wait time to escalate node kill to CSS in seconds
_cgs_os_level_connection_check 1 allow OS level connection and interface check
_cgs_os_level_connection_dynamicthread TRUE allow oraping to spawn more threads than the default.
_cgs_os_level_connection_reqno 0 number of ping rqst to process at once, threads created
_cgs_publish_netinfo_collect_event_chm rcfg-half-timeout,rc enable cgs publish collect_netinfo event to event stream for CHM
fg-timeout,rcfg-done
,idleconn-half-timeo
ut,idleconn-timeout-
imr,idleconn-cln,rcf
g-begin,rcfg-pngchkd
one,rcfg-memchg
_cgs_publish_netinfo_collect_event_chmjf TRUE enable cgs publish collect_netinfo event to event stream for CHM with
_cgs_publish_netinfo_collect_event_chmjf_batchsz 0 batch size of cgs events publishing to CHM in json format via clsce ev
_cgs_publish_netinfo_collect_event_haip TRUE enable cgs publish collect_netinfo event to event stream for HAIP
_cgs_query_net_interface SCLSI api to query network interface
_cgs_reconfig_extra_wait 3 CGS reconfiguration extra wait time for CSS in seconds
_cgs_reconfig_poll_time 20 CGS polling interval during reconfig in milli-seconds
_cgs_reconfig_timeout 0 CGS reconfiguration timeout interval
_cgs_send_timeout 300 CGS send timeout value
_cgs_support_rim_disc TRUE rim instance disconnect and reconnect event support
_cgs_ticket_sendback 50 CGS ticket active sendback percentage threshold
_cgs_tickets 1000 CGS messaging tickets
_cgs_zombie_member_kill_wait 20 CGS zombie member kill wait time in seconds
_change_vector_buffers 1 Number of change vector buffers for media recovery
_change_vector_read_sample_ratio 0 Sample ratio of change vector read timestamp on ADG
_check_block_after_checksum FALSE check block before write irrespective of db_block_checking
_check_block_new_invariant_for_flashback FALSE check block new invariant for flashback
_check_column_length TRUE check column length
_check_pdbid_in_redo FALSE Enable checking of pluggable database ID in redo
_check_ts_threshold 0 check tablespace thresholds
_child_read_ahead_dba_check FALSE if TRUE, assert child read ahead dba to be continuous of parent
_chunk_pruning_enabled TRUE enable chunk based partition pruning in sharding
_cleanout_shrcur_buffers TRUE if TRUE, cleanout shrcur buffers
_cleanup_file_copy TRUE Enable file cleanup in Create PDB
_cleanup_rollback_entries 100 no. of undo entries to apply per transaction cleanup
_cleanup_timeout 150 timeout value for PMON cleanup
_cleanup_timeout_flags 0 flags for PMON cleanup timeout
_clear_buffer_before_reuse FALSE Always zero-out buffer before reuse for security
_clear_preserved_buffers TRUE Clear preserved buffers before DB reopen after switchover
_clear_srl_during_so 2 Enable/Disable clearing SRLs during switchover
_cli_cachebktalloc 100 Percentage of memory to allocate
_client_enable_auto_unregister FALSE enable automatic unregister after a send fails with timeout
_client_features_tracking_enable TRUE track client feature uage
_client_ntfn_cleanup_interval 2400 interval after which dead client registration cleanup task repeats
_client_ntfn_max_cleanup_interval 7200 max limit for cleanup interval
_client_ntfn_pinginterval 75 time between pings to unreachable notification clients
_client_ntfn_pingretries 6 number of times to ping unreachable notification clients
_client_ntfn_pingtimeout 30000 timeout to connect to unreachable notification clients
_client_result_cache_bypass FALSE bypass the client result cache
_client_result_cache_ramthreshold client_result_cache_ramthreshold
_client_result_set_threshold client_result_set_threshold
_client_tstz_error_check TRUE Should Client give error for suspect Timestamp with Timezone operation
_clone_during_split TRUE if TRUE, clone buffer during index split
_clone_one_pdb_recovery FALSE Recover ROOT and only one PDB in clone database
_close_cached_open_cursors FALSE close cursors cached by PL/SQL at each commit
_close_deq_by_cond_curs FALSE Close Dequeue By Condition Cursors
_cloud_domain internal domain name used for cloud deployments
_cloud_mandatory_profile_setup FALSE Mandatory Profile Setup for Multitenant Cloud Environment
_cloud_migration_mode FALSE Enable special migration mode to tweak sql statements
_cloud_name gsm cloud name
_cloud_operator_user list of Cloud Operator users
_cloud_service_sim 0 simulate cloud services in Database
_cloud_service_type cloud service type
_cloud_service_version Cloud Service Version
_cloud_session_svc_params FALSE Set service specific parameters in cloud session
_cloud_table_commit_time_limit 0 export threshold (time) for buffered cloud table
_cloud_table_read_size 10485760 READSIZE parameter for for external tables used by cloud tables
_cloud_table_reject_limit 0 REJECT LIMIT parameter for external tables used by cloud tables
_cloud_trace 0 send supported trace file types to the cloud
_cloud_trace_bucket_fill_percent 50 cloud trace bucket fill threshold
_cloud_trace_bucket_size 10485760 cloud trace bucket size
_cloud_trace_temp_table cloud tracing temp table
_cloudops_common_users List of common users to be treated as Cloud Ops
_cloudops_sensitive_masking OFF Mask sensitive information in customer PDBs from Cloud Ops
_cloudsql_jg_enabled FALSE enable JG granulation support
_cloudsql_offload_enabled TRUE enable CloudSQL cell offload support
_cluster_database_instances 1 number of instances to use for sizing cluster db SGA structures
_cluster_flash_cache_slave_file cluster flash cache slave file for default block size
_cluster_flash_cache_slave_size 0 cluster flash cache slave file size for default block size
_cluster_instances_number 4 number of instances to calculate number of resource buckets
_cluster_library clss cluster library selection
_clusterwide_global_transactions TRUE enable/disable clusterwide global transactions
_collapse_wait_history FALSE collapse wait history
_collect_tempundo_stats TRUE Collect Statistics v$tempundostat
_collect_undo_stats TRUE Collect Statistics v$undostat
_column_compression_factor 0 Column compression ratio
_column_elimination_off FALSE turn off predicate-only column elimination
_column_level_stats OFF Turn column statistics collection on or off
_column_stats_flush_interval 60 column-level statistics flush to disk interval
_column_stats_max_entries_per_stat 5 column-level statistics max entries saved per stat type
_column_stats_mem_limit 10 percentage of the max shared pool column-level statistics can use - in
_column_tracking_level 53 column usage tracking
_commit_tracking_fxt_tab_size 360 commit tracking fixed table size
_common_data_view_enabled TRUE common objects returned through dictionary views
_common_directory_access ALLOW Manage access to common directory objects inside the PDB
_common_directory_access_mode ALL Access mode for common directory objects inside the PDB
_common_user_prefix C## Enforce restriction on a prefix of a Common User/Role/Profile name
_compilation_call_heap_extent_size 16384 Size of the compilation call heaps extents
_complex_view_merging TRUE enable complex view merging
_component_timing Oracle parameter used for component tracking and timing
_composite_interval_partition_creation_opt_enabled TRUE when creating interval/auto list partitions, defer subpartition segmen
_compression_above_cache 0 number of recompression above cache for sanity check
_compression_advisor 0 Compression advisor
_compression_chain 90 percentage of chained rows allowed for Compression
_compression_compatibility 23.6.0 Compression compatibility
_con_map_sql_enforcement TRUE disable container map SQL enforcement
_con_number_reuse_threshold 2147483647 CON# begin reuse threshold
_concurrency_chosen 10 what is the chosen value of concurrency
_connect_by_use_union_all TRUE use union all for connect by
_connect_string_settings_after_logon_triggers 0 set connect string session settings after logon triggers
_connect_string_settings_unalterable 0 make connect string session settings unalterable
_connection_broker_error_new_limit 100 connection broker error limit for new connections
_connection_broker_handout_accept FALSE connection broker accepts prior to handout
_connection_broker_host localhost connection broker host for listen address
_connstr_test_param 0 connect string workload behavior spare param
_consensus_follower_election_timeout 12000 consensus follower's election timeout
_consensus_leader_heartbeat_interval 6000 consensus leader's heartbeat interval
_consensus_leader_maximum_heartbeats consensus leader's maximum heartbeats
_consensus_queue_maximum_elements 10 consensus queue maximum elements
_consensus_slaves_maximum_count 5 consensus slaves maximum count
_containers_dop_use_remote FALSE should dop take into account PDBs open on a remote instance
_containers_multiple_ptn_key TRUE enable multiple partition keys for container views
_containers_remote FALSE enable containers query to use database link
_controlfile_auto_convert_behaviour AUTO_CONVERT controlfile auto convert behavior for a mixed platform dataguard.
_controlfile_autobackup_delay 300 time delay (in seconds) for performing controlfile autobackups
_controlfile_backup_copy_check TRUE enable check of the copied blocks during controlfile backup copy
_controlfile_block_corruption_keep_records 4294967294 block corruption records to keep
_controlfile_block_size 0 control file block size in bytes
_controlfile_cache_bpb 4 Control file cache buffers per bucket
_controlfile_cache_bpp 32 Control file cache buckets per pool
_controlfile_cache_recvrbsz 4096 Control file cache recv ring buffer size
_controlfile_cache_sendrbsz 4096 Control file cache send ring buffer size
_controlfile_cache_size 8388608 Size of control file cache in blocks
_controlfile_cache_timer 600 Control file cache buffers per bucket
_controlfile_cell_flash_caching 3 Flash cache hint for control file accesses
_controlfile_enable_rdma_read TRUE enable controlfile rdma read
_controlfile_enqueue_dump FALSE dump the system states after controlfile enqueue timeout
_controlfile_enqueue_holding_time 120 control file enqueue max holding time in seconds
_controlfile_enqueue_holding_time_tracking_size 0 control file enqueue holding time tracking size
_controlfile_enqueue_timeout 900 control file enqueue timeout in seconds
_controlfile_section_init_size control file initial section size
_controlfile_section_max_expand control file max expansion rate
_controlfile_split_brain_check FALSE Check for a split-brain in distributed lock manager domain
_controlfile_update_check LOW controlfile update sanity check
_controlfile_validate_on_search FALSE Validate control file blocks on search
_controlfile_verify_on_mount FALSE Verify control file blocks on header error during mount
_convert_set_to_join FALSE enables conversion of set operator to join
_coord_message_buffer 0 parallel recovery coordinator side extra message buffer size
_corrupted_rollback_segments corrupted undo segment list
_cost_equality_semi_join TRUE enables costing of equality semi-join
_cp_del_free_sess TRUE connection pool: delete free sessions when at PDB limit
_cp_del_free_sess_limit_secs 1 connection pool: delete free sessions time limit (in seconds)
_cp_num_hash_latches connection pool number of hash latches
_cpu_count_startup 0 Startup number of CPUs for this instance
_cpu_eff_thread_multiplier CPU effective thread multiplier
_cpu_to_io 0 divisor for converting CPU cost to I/O cost
_cpu_util_adj_force 1 force cpu util adjustment
_cpu_util_adj_target 0 cpu utilization adjustment target
_cputime_limit_parallel_fptr 60 CPU-time limit for for parallel first-pass recovery
_cr_grant_global_role TRUE if TRUE, grant lock for CR requests when block is in global role
_cr_grant_local_role AUTO turn 3-way CR grants off, make it automatic, or turn it on
_cr_grant_only FALSE if TRUE, grant locks when possible and do not send the block
_cr_multiblock_grant_only FALSE if TRUE, grant locks for multiblock read when possible and do not send
_cr_rollbacks 0 Maximum number of CR rollbacks per block under CR server
_cr_server_log_flush TRUE if TRUE, flush redo log before serving a CR buffer
_cr_trc_buf_size 8192 size of cr trace buffer
_crash_domain_on_exception 0 allow domain to exit for exceptions in any thread
_create_idx_from_constraint FALSE allow trigger to create index from constraint
_create_pdb_disable_mirror_reads FALSE Disable mirror reads during create pdb
_create_pdb_flashback_barrier FALSE force flashback barrier for create pdb
_create_sensitive_credential FALSE Create scheduler credential as sensitive for cloud environment
_create_stat_segment 0 create ilm statistics segment
_create_table_in_any_cluster FALSE allow creation of table in a cluster not owned by the user
_cross_con_collection TRUE enable cross container collection
_cross_con_remove_pushed_preds FALSE remove pushed predicates from query fetching across containers
_cross_con_row_count FALSE use actual row count for cross container views
_cross_region_refclone TRUE Enable cross region refreshable clones for Cloud links
_crs_2phase bypass crs 2phase
_cstats_enabled FALSE Core stat monitoring enabled
_ctas_numfrags_hint 0 Hint for number of partition fragments to be loaded in a CTAS
_ctc_no_pdb_shrink_check 0 Disable PDB shrink check for background cleanup operations
_ctex_fk_copy_mode 1 Create table for exchange Copy mode for referential constraints
_cu_reorg_base_delay 8 Base delay value for (M)HCC Reorganization
_cu_reorg_max_retries 2 Maximum retries for (M)HCC Reorganization
_cu_reorg_threshold 95 Deleted row threshold for (M)HCC Reorganization eligibility
_cu_row_locking 0 CU row level locking
_current_session_at_dbtimezone FALSE Set default session timezone to PDB timezone
_current_time_at_dbtimezone FALSE use DB timezone when computing current time
_cursor_bind_capture_area_size 400 maximum size of the cursor bind capture area
_cursor_bind_capture_interval 900 interval (in seconds) between two bind capture for a cursor
_cursor_cache_time 900 number of seconds a session cached cursor stay in cache.
_cursor_db_buffers_pinned 2134 additional number of buffers a cursor can pin at once
_cursor_diagnostic_node_agedout_count 100 Number of cursor-sharing diagnostic nodes to retain before reuse
_cursor_features_enabled 8194 Shared cursor features enabled bits.
_cursor_obsolete_threshold 8192 Number of cursors per parent before obsoletion.
_cursor_plan_enabled TRUE enable collection and display of cursor plans
_cursor_plan_hash_version 1 version of cursor plan hash value
_cursor_plan_unparse_enabled TRUE enables/disables using unparse to build projection/predicates
_cursor_reload_failure_threshold 20 Number of failed reloads before marking cursor unusable
_cursor_runtimeheap_memlimit 5242880 Shared cursor runtime heap memory limit
_cursor_stats_enabled TRUE Enable cursor stats
_cursor_stats_purge_threshold 0 Cursor stats purge threshold in minutes
_cvw_enable_weak_checking TRUE enable weak view checking
_cvw_examine_tables_in_from_list_subqry TRUE examine tables in from list subqueries
_data_access_stats FALSE Track data access queries to collect stats
_data_access_stats_depth 0 Tracks data access query depth to collect stats
_data_guard_redo_statistics 31 Enable/Disable redo statistics
_data_guard_val_redo 65537 Enable/Disable redo validation
_data_link_remote FALSE transform data link to use database link
_data_transfer_cache_bc_perc_x100 500 Percentange * 100 of buffer cache to transfer to data transfer cache
_data_warehousing_scan_buffers TRUE if TRUE, enable data warehousing scan buffers
_data_warehousing_scan_flash_buffers FALSE if TRUE, enable data warehousing scan flash buffers
_data_warehousing_serial_scan TRUE if TRUE, enable data warehousing serial scans
_database_role PRIMARY current role to set parameter values automatically based on role
_datafile_cow FALSE Use copy on write snapshot for the renamed file
_datafile_create_min_wait_time 0 Minimum wait time for standby during data file creation
_datafile_create_wait_time 0 Wait time for standby during data file creation
_datafile_open_errors_crash_instance TRUE datafile open errors crash instance
_datafile_write_errors_crash_instance TRUE datafile write errors crash instance
_datamemory_area_size 1073741824 total size in bytes of in-memory area
_datamemory_favor_empty_granules_for_shrink 2 Datamemory favor empty granules during shrink
_datapump_bypass_tstz_check FALSE Bypass Data Pump TSTZ version checking during import.
_datapump_compressbas_buffer_size 0 specifies buffer size for BASIC compression algorithm
_datapump_conv_pga_lim 0 pga limit for Data Pump conventional path bind array size
_datapump_gather_stats_on_load FALSE Gather table statistics during Data Pump load rather thanimporting sta
_datapump_hide_cdb_warning FALSE Hide Data Pump warning for CDB$ROOT and PDB$SEED
_datapump_inherit_svcname TRUE Inherit and propagate service name throughout job
_datapump_metadata_buffer_size 131072 specifies buffer size for metadata file I/O
_datapump_net_transfer_size 0 data pump direct path network unload transfer size
_datapump_tabledata_buffer_size 262144 specifies buffer size for table data file I/O
_db_16k_cache_xmem_size 0 Size of 16k buffer pool on extended cache
_db_16k_flash_cache_file flash cache file for 16k block size
_db_16k_flash_cache_size 0 flash cache size for _db_16k_flash_cache_file
_db_2k_cache_xmem_size 0 Size of 2k buffer pool on extended memory
_db_2k_flash_cache_file flash cache file for 2k block size
_db_2k_flash_cache_size 0 flash cache size for _db_2k_flash_cache_file
_db_32k_cache_xmem_size 0 Size of 32k buffer pool on extended memory
_db_32k_flash_cache_file flash cache file for 32k block size
_db_32k_flash_cache_size 0 flash cache size for _db_32k_flash_cache_file
_db_4k_cache_xmem_size 0 Size of 4k buffer pool on extended cache
_db_4k_flash_cache_file flash cache file for 4k block size
_db_4k_flash_cache_size 0 flash cache size for _db_4k_flash_cache_file
_db_8k_cache_xmem_size 0 Size of 8k buffer pool on extended cache
_db_8k_flash_cache_file flash cache file for 8k block size
_db_8k_flash_cache_size 0 flash cache size for _db_8k_flash_cache_file
_db_active_prewarm_expiration 240 active prewarming file expiration interval
_db_active_prewarm_interval 60 active prewarming interval
_db_active_prewarm_spare1 0 active prewarming spare
_db_active_prewarm_spare2 0 active prewarming spare 2
_db_aging_cool_count 1 Touch count set when buffer cooled
_db_aging_freeze_cr FALSE Make CR buffers always be too cold to keep in cache
_db_aging_hot_criteria 2 Touch count which sends a buffer to head of replacement list
_db_aging_stay_count 0 Touch count set when buffer moved to head of replacement list
_db_aging_touch_time 3 Touch count which sends a buffer to head of replacement list
_db_always_check_system_ts TRUE Always perform block check and checksum for System tablespace
_db_block_adjcheck TRUE adjacent cache buffer checks - low blkchk overwrite parameter
_db_block_adjchk_level 0 adjacent cache buffer check level
_db_block_align_direct_read TRUE Align Direct Reads
_db_block_bad_write_check FALSE enable bad write checks
_db_block_buffers 683520 Number of database blocks cached in memory: hidden parameter
_db_block_cache_history_lru FALSE buffer header tracing for lru operations
_db_block_cache_protect false protect database blocks (for debugging only)
_db_block_cache_protect_internal 0 protect database blocks (for internal use only)
_db_block_check_for_debug FALSE Check more and dump block before image for debugging
_db_block_check_objtyp TRUE check objd and typ on cache disk read
_db_block_chunkify_ncmbr FALSE chunkify noncontig multi block reads
_db_block_corruption_recovery_threshold 30 threshold number of block recovery attempts
_db_block_do_full_mbreads FALSE do full block read even if some blocks are in cache
_db_block_hash_buckets 2097152 Number of database block hash buckets
_db_block_hash_latches 16384 Number of database block hash latches
_db_block_header_guard_level 0 number of extra buffer headers to use as guard pages
_db_block_hi_priority_batch_size 0 Fraction of writes for high priority reasons
_db_block_iterations_for_rm 2000 number of blocks to reduce every iteration for RM
_db_block_known_clean_pct 2 Initial Percentage of buffers to maintain known clean
_db_block_lru_latches 36 number of lru latches
_db_block_max_cr_dba 6 Maximum Allowed Number of CR buffers per dba
_db_block_max_scan_pct 40 Percentage of buffers to inspect when looking for free
_db_block_med_priority_batch_size 0 Fraction of writes for medium priority reasons
_db_block_numa 1 Number of NUMA nodes
_db_block_prefetch_fast_longjumps_enabled TRUE Batched IO enable fast longjumps
_db_block_prefetch_limit 0 Prefetch limit in blocks
_db_block_prefetch_override 0 Prefetch force override in blocks
_db_block_prefetch_private_cache_enabled TRUE Batched IO enable private cache
_db_block_prefetch_quota 10 Prefetch quota as a percent of cache size
_db_block_prefetch_skip_reading_enabled TRUE Batched IO enable skip reading buffers
_db_block_prefetch_wasted_threshold_perc 2 Allowed wasted percent threshold of prefetched size
_db_block_scandepth_for_rm 20 number of blocks to reduce every iteration for RM
_db_block_table_scan_buffer_size 4194304 Size of shared table scan read buffer
_db_block_temp_redo FALSE generate redo for temp blocks
_db_block_trace_protect FALSE trace buffer protect calls
_db_block_vlm_check FALSE check for mapping leaks (debugging only)
_db_block_vlm_leak_threshold 4 threshold for allowable mapping leaks
_db_blocks_per_hash_latch Number of blocks per hash latch
_db_bt_cache_only_readmostly_obj_on_roi FALSE if TRUE, ABTC only caches read mostly objects on ROI
_db_buffer_cache_percent 75 Buffer cache percent of sga
_db_cache_advice_hash_latch_multiple 16 cache advisory hash latch multiple
_db_cache_advice_max_size_factor 2 cache advisory maximum multiple of current size to similate
_db_cache_advice_sample_factor 4 cache advisory sampling factor
_db_cache_advice_sanity_check FALSE cache simulation sanity check
_db_cache_advice_size_submultiple 10 cache advisory size submultiple
_db_cache_block_read_stack_trace 0 dump short call stack for block reads
_db_cache_block_read_stack_trace_where1 0 dump short call stack for block reads just for where1
_db_cache_block_read_stack_trace_where2 0 dump short call stack for block reads just for where2
_db_cache_block_read_stack_trace_where3 0 dump short call stack for block reads just for where3
_db_cache_crx_check FALSE check for costly crx examination functions
_db_cache_max_sz 0
_db_cache_min_sga_perc 0 Make db_cache_size min this percentage of sga_target
_db_cache_miss_check_les FALSE check LEs after cache miss
_db_cache_mman_latch_check FALSE check for wait latch get under MMAN ops in kcb
_db_cache_numa_tol_enable 10 Enable/disable numa imbalance in cache granules
_db_cache_numa_tolerance 5 Allow this much numa imbalance in cache granules
_db_cache_pmem_confidence_try 0 DB Cache PMEM buffer promote attempts for greater confidence
_db_cache_pmem_promotion_touch_rate_reset_interval 300 DB Cache PMEM promotion touch rate reset interval in sec
_db_cache_pmem_promotion_touch_rate_threshold_time 30 DB Cache PMEM promotion touch rate threshold time in sec
_db_cache_pmem_touch_rate_compare_per 95 DB Cache PMEM buffer touch rate additive percentage when comparingagai
_db_cache_pmemp_len 10000 DB Cache PMEM promotion list max length
_db_cache_pre_warm TRUE Buffer Cache Pre-Warm Enabled : hidden parameter
_db_cache_process_cr_pin_max 2147483647 maximum number of cr pins a process may have
_db_cache_read_temp_as_cur_on_standby TRUE if TRUE, read temp space blocks as current on standby
_db_cache_silicon_secured_memory TRUE enable silicon secured memory
_db_cache_wait_debug 0 trace new kslwaits
_db_cache_xmem_promotion_algo_chosen 38 DB Cache Xmem/Pmem promotion algo
_db_cache_xmem_size 0 Size of extended memory data area for buffer cache DEFAULT pool
_db_change_notification_enable TRUE enable db change notification
_db_check_cell_hints FALSE
_db_disable_temp_encryption FALSE Disable Temp Encryption for Spills
_db_discard_lost_masterkey FALSE discard lost masterkey handles
_db_dump_from_disk_and_efc 0 dump contents from disk and efc
_db_dw_scan_adaptive_cooling FALSE if TRUE, enable adaptive DW scan cooling
_db_dw_scan_max_shadow_count 5 DW Scan adaptive cooling max shadow count
_db_dw_scan_obj_cooling_factor 500 DW Scan object cooling factor to cool all temperatures
_db_dw_scan_obj_cooling_interval 100 DW Scan object cooling interval in number of scans, seconds, or pct of
_db_dw_scan_obj_cooling_policy CACHE_SIZE DW scan objtect cooling policy
_db_dw_scan_obj_warming_increment 1000 DW Scan object warming increment when an object is scanned
_db_fast_obj_check FALSE enable fast object drop sanity check
_db_fast_obj_ckpt TRUE enable fast object checkpoint
_db_fast_obj_truncate TRUE enable fast object truncate
_db_file_direct_io_count 1048576 Sequential I/O buf size
_db_file_exec_read_count 128 multiblock read count for regular clients
_db_file_format_io_buffers 32 Block formatting I/O buf count
_db_file_noncontig_mblock_read_count 11 number of noncontiguous db blocks to be prefetched
_db_file_optimizer_read_count 8 multiblock read count for regular clients
_db_file_secondary_prewarm_read TRUE enable pre-warm reads to secondary data file during move/rekey
_db_flash_cache_disable_write_batchsize 4096 Flash cache disable writes processing batchsize
_db_flash_cache_encryption FALSE Set _db_flash_cache_encryption to enable flash cache encryption
_db_flash_cache_force_replenish_limit 8 Flash cache force replenish lower limit in buffers
_db_flash_cache_hint_to_cell_flash_cache DDL whether db flash cache should pass hint to cell flash cache
_db_flash_cache_keep_limit 80 Flash cache keep buffer upper limit in percentage
_db_flash_cache_max_latency 400 Flash cache maximum latency allowed in 10 milliseconds
_db_flash_cache_max_outstanding_writes 32 Flash cache maximum outstanding writes allowed
_db_flash_cache_max_read_retry 10 Flash cache max read retry
_db_flash_cache_max_slow_io 3 Flash cache maximum slow io allowed
_db_flash_cache_slow_io_adjustment_interval 3600 Decrement interval
_db_flash_cache_write_limit 6 Flash cache write buffer upper limit in percentage
_db_flashback_iobuf_size 1 Flashback IO Buffer Size
_db_flashback_log_min_size 16777216 Minimum flashback database log size in bytes
_db_flashback_log_min_total_space 0 Minimum flashback database log total space in bytes
_db_flashback_num_iobuf 64 Flashback Number of IO buffers
_db_full_caching TRUE enable full db implicit caching
_db_full_db_cache_diff_pct 5 Cache at least this % larger than DB size for full db caching
_db_generate_dummy_masterkey FALSE if TRUE, use old havior and generate dummy master key
_db_handles 3200 System-wide simultaneous buffer operations
_db_handles_cached 10 Buffer handles cached each process
_db_hot_block_tracking FALSE track hot blocks for hash latch contention
_db_imoltp_hashidx_force_nonctg 0 kcbw imoltp hash index force non contig granules
_db_index_block_checking TRUE index block checking override parameter
_db_initial_cachesize_create_mb 256 size of cache created at startup
_db_keep_cache_xmem_size 0 Size of KEEP buffer pool for standard block size buffers on extended m
_db_l2_tracing 0 flash cache debug tracing
_db_large_dirty_queue 25 Number of buffers which force dirty queue to be written
_db_link_sources_tracking TRUE enable/disable database link source tracking
_db_lost_write_checking 2 Enable scn based lost write detection mechanism
_db_lost_write_corrupt_block FALSE allow corruption for lost write
_db_lost_write_protect_timer_interval_secs 60 Lost write protection periodic tasks interval in seconds
_db_lost_write_tracing FALSE Enable _db_lost_write_checking tracing
_db_minimum_auxsize_percent 0 min percent of aux buffers to be maintained before using aux2
_db_move_hot_buffers_for_granule_eviction TRUE if TRUE, enable movement of hot buffers for granule eviction
_db_mttr_advice ON MTTR advisory
_db_mttr_partitions 0 number of partitions for MTTR advisory
_db_mttr_sample_factor 64 MTTR simulation sampling factor
_db_mttr_sim_target MTTR simulation targets
_db_mttr_sim_trace_size 256 MTTR simulation trace size
_db_mttr_trace_to_alert FALSE dump trace entries to alert file
_db_noarch_disble_optim FALSE Image redo logging (NOARCHIVEMODE)
_db_num_evict_waitevents 16384 number of evict wait events
_db_num_gsm 0 database number in gsm dbpool
_db_nvm_promotion_deferred_tchcnt 195 touch count threshold which allows deferred background based nvm buffe
_db_obj_cnt_for_file_ckpt 1000000 object count after that go for file checkpoint
_db_obj_enable_ksr TRUE enable ksr in object checkpoint/reuse
_db_obj_to_file_for_file_ckpt 10000 object to file ratio after that go for file checkpoint
_db_open_links 0 Max allowed open dblinks for a pdb.
_db_percent_hot_default 50 Percent of default buffer pool considered hot
_db_percent_hot_keep 0 Percent of keep buffer pool considered hot
_db_percent_hot_recycle 0 Percent of recycle buffer pool considered hot
_db_percpu_create_cachesize 2 size of cache created per cpu in deferred cache create
_db_pmem_auto_resize_interval 10 PMEM auto resize interval in minutes
_db_pmem_direct_map_size 0 Size of direct mappable PMEM buffer cache
_db_prefetch_histogram_statistics FALSE maintain prefetch histogram statistics in x$kcbprfhs
_db_recovery_temporal_file_dest default database recovery temporal file location
_db_recycle_cache_xmem_size 0 Size of Recycle buffer pool for standard block size buffers on extende
_db_replay_security_config Database Replay Security Configuration
_db_required_percent_fairshare_usage 10 percent of fairshare a processor group should always use
_db_row_overlap_checking TRUE row overlap checking override parameter for data/index blocks
_db_shadow_lost_write_protect NOT_SET alter shadow lost write detection for PDB
_db_todefer_cache_create TRUE buffer cache deferred create
_db_writer_chunk_writes 0 Number of writes DBWR should wait for
_db_writer_coalesce_area_size 15597376 Size of memory allocated to dbwriter for coalescing writes
_db_writer_coalesce_encrypted_buffers TRUE Coalecsing for encrypted buffers
_db_writer_coalesce_write_limit 131072 Limit on size of coalesced write
_db_writer_flush_imu TRUE If FALSE, DBWR will not downgrade IMU txns for AGING
_db_writer_histogram_statistics FALSE maintain dbwr histogram statistics in x$kcbbhs
_db_writer_max_writes 0 Max number of outstanding DB Writer IOs
_db_writer_nomemcopy_coalesce FALSE Enable DBWR no-memcopy coalescing
_db_writer_verify_writes FALSE Enable lost write detection mechanism
_db_xmem_cache_encryption TRUE Set _db_xmem_cache_encryption to enable XMEM cache encryption
_db_xmem_hot_switch_criteria 195 Xmem/Pmem buffer touch count which makes this buffer candidate of swit
_dbcomp_maxdump 100 Maximum # of dumped blocks per datafile
_dbcomp_msg_ver 1 database block compare message version
_dbfs_modify_implicit_fetch TRUE DBFS Link allows implicit fetch on modify - only on SecureFiles
_dbfs_symlink_path_prefix TRUE disallow symbolic link creation in dbfs outside path_prefix
_dbg_proc_startup FALSE debug process startup
_dbg_scan 0 generic scan debug
_dblink_drain_method REQEND DBLink drain method
_dblink_healthcheck FALSE Enable check for health of database link
_dblink_internal_gateway FALSE database link goes through Internal Gateway
_dblink_multiple_address_transform FALSE Enable multiple address transformation
_dblink_rce_dns_proxy FALSE Enable RCE DNS Proxy for database link
_dblink_topology TRUE Enable topology-driven database links
_dbms_shared_pool_allow_hot_oso TRUE restrict markhot or unmarkhot
_dbms_sql_security_level 1 Security level in DBMS_SQL
_dbms_vector_trace FALSE dbms_vector tracing enable
_dbmsumf$$1x UMF Configuration
_dbmsumf$$2x UMF Configuration
_dbmsumf$$3x UMF Configuration
_dbmsumf$$nn UMF Configuration
_dbmsumf$$p UMF Configuration
_dbnest_enable NONE dbNest enable
_dbnest_pdb_fs_conf PDB Filesystem configuration
_dbnest_pdb_fs_type DEFAULT PDB FS Type
_dbnest_pdb_network_ip PDB network ip configuration
_dbnest_pdb_scm_conf PDB SCM configuration
_dbnest_pdb_scm_level STRICT1 PDB SCM Level
_dbnest_resource_opts 0 dbNest - resource options
_dbnest_skip_fed_root TRUE Fed root is skipped so CDB nest is root of all pdbs
_dbnest_stage_dir Staging directory configuration
_dbop_enabled 1 Any positive number enables automatic DBOP monitoring. 0 is disabled
_dbopen_breakpoint none ALTER DATABASE OPEN codepath breakpoint
_dbpool_name gsm database pool name
_dbreplay_feature_control Database Replay Feature Control
_dbreplay_mpk_key Database Replay Package Key
_dbrm_dynamic_threshold 17302504 DBRM dynamic threshold setting
_dbrm_num_runnable_list 0 Resource Manager number of runnable list per NUMA node
_dbrm_quantum DBRM quantum
_dbrm_runchk 30000 DBRM kskrunstatechk thresholds
_dbrm_short_wait_us 300 Resource Manager short wait length
_dbwr_async_io TRUE Enable dbwriter asynchronous writes
_dbwr_flashlock_shrink_limit 0 limit to shrink le to flash lock per dbwr iteration
_dbwr_nowrite_assert_interval 7200 dbwriter assert interval after no write seconds
_dbwr_nwp_assert_interval 1800 dbwriter no write permission assert interval after no write seconds
_dbwr_scan_interval 300 dbwriter scan interval
_dbwr_stall_write_detection_interval 900 dbwriter stall write detection interval
_dbwr_tracing 0 Enable dbwriter tracing
_dd_validate_remote_locks TRUE GES deadlock detection validate remote locks
_dde_flood_control_init TRUE Initialize Flood Control at database open
_ddlapply_enable FALSE DDL VIA APPLY Enable
_dead_process_scan_interval 60 PMON dead process scan interval (in seconds)
_deadlock_diagnostic_level 2 automatic deadlock resolution diagnostics level
_deadlock_record_to_alert_log TRUE record resolved deadlocks to the alert log
_deadlock_resolution_incidents_always FALSE create incidents when resolving any deadlock?
_deadlock_resolution_incidents_enabled TRUE create incidents during deadlock resolution
_deadlock_resolution_level 1 automatic deadlock resolution level
_deadlock_resolution_min_wait_timeout_secs 60 the minimum wait timeout required for deadlock resolution
_deadlock_resolution_signal_process_thresh_secs 60 the amount of time given to process a deadlock resolution signal
_debug_segment_size 50 Debug-log segment size in MBs (1024*1024)
_debug_segment_textfile TRUE Debug-log text-file also to be segmented
_debug_segments_max 20 Debug-log max segments to retain, 0 for unlimited
_default_encrypt_alg 0 default encryption algorithm
_default_ini_trans_index 0 Default value of INI_TRANS enforced by DWCS lockdown for indexes
_default_ini_trans_table 0 Default value of INI_TRANS enforced by DWCS lockdown for tables
_default_non_equality_sel_check TRUE sanity check on default selectivity for like/range predicate
_default_oracle_fs_type ofs default file system type for an oracle file system
_default_pct_free 0 Default value of PCT_FREE enforced by DWCS lockdown
_default_pdb_filecopy_dop 0 default pdb file copy degree of parallelism
_default_service 1 Run default service in various modes
_defer_eor_orl_arch_for_so TRUE defer EOR ORL archival for switchover
_defer_log_boundary_ckpt TRUE defer media recovery checkpoint at log boundary
_defer_log_count 100 Number of log boundaries media recovery checkpoint lags behind
_defer_rcv_during_sw_to_sby FALSE Defer recovery during switchover to standby
_defer_rcv_pdb_attach TRUE Defer PDB domain attach in instance recovery
_defer_rewrap_controlfile_key_history FALSE if TRUE, defer rewrap control file TS keys under next PDB open
_defer_sga_alloc_chunk_size 1073741824 Chunk size for defer sga allocation
_defer_sga_enabled FALSE Enable deferred shared memory allocation for SGA
_defer_sga_min_spsz_at_startup 53687091200 Minimum shared pool size at startup with deferred sga enabled
_defer_sga_min_total_defer_segs_sz 107374182400 Minimum total deferred segs size for defer sga allocation
_defer_sga_test_alloc_intv 0 SA** sleeps for N secs before allocating a deferred segment
_defer_while_patching 0 Session should be deferred if patching is secheduled
_deferred_constant_folding_mode DEFAULT Deferred constant folding mode
_deferred_log_dest_is_valid TRUE consider deferred log dest as valid for log deletion (TRUE/FALSE)
_deferred_seg_in_seed TRUE Enable Deferred Segment Creation in Seed
_del_qsvc_last_bufsub_drop FALSE delete queue service on last buffered subscriber drop
_delay_index_maintain TRUE delays index maintenance until after MV is refreshed
_delete_ghost_data FALSE Test delete ghost data
_deq_execute_reset_time 30 deq execute reset time
_deq_ht_child_latches 8 deq ht child latches
_deq_ht_max_elements 100000 deq ht max elements
_deq_large_txn_size 25000 deq large txn size
_deq_log_array_size 10000 deq log array size
_deq_max_fetch_count 10 deq max fetch count
_deq_maxwait_time 0 Change wait times between dequeue calls
_desired_readmem_rate 90 The desired percentage of redo reading from memory
_df_hist_offl_override FALSE Allow update of keep offline bit in datafile history record
_dg_broker_trace_level data guard broker trace level
_dg_cf_check_timer 15 Data Guard controlfile check timer
_dg_corrupt_redo_log 0 Corrupt redo log validation during archivals
_dgb_dgpdb_appst DGPDBs with apply state off
_dgpdb_cf_retention 10080 number of minutes to keep the control file copy made during role chang
_dgpdb_file_name_convert datafile name convert patterns and strings for per PDB standby
_dgpdb_pcf_cf_apply_time 600 DGPDB pcf to cf mark apply time in seconds
_dgpdb_pcf_cf_sync_time 43200 DGPDB pcf to cf sync time in seconds
_dgpdb_rc_notify_check_interval 5 number of minutes between attempts to send role change notifications t
_dgpdb_standby_controlfile_name dgpdb_stdby_cf_pdbid a name template with three %u's for DGPDB standby controlfile
_%u_%u_%u.cf
_diag_adl_dyn_alloc TRUE Enable Diag Alert Dynamic Allocation
_diag_adr_auto_purge TRUE Enable/disable ADR MMON Auto Purging
_diag_adr_enabled TRUE Parameter to enable/disable Diag ADR
_diag_adr_test_param 0 Test parameter for Diagnosability
_diag_adr_trace_dest /u01/app/oracle/diag diagnosability trace directory path
/rdbms/cdb26ai/cdb26
ai/trace
_diag_alert_log_enable_attention_prefix TRUE Enable/Disable attention prefix for alert log entries
_diag_alert_root_annotate FALSE Enable annotation for alert log entries from root
_diag_arb_before_kill FALSE dump diagnostics before killing unresponsive ARBs
_diag_attn_log_enable_fc TRUE Enable/Disable attention log flood control
_diag_attn_log_format_error Attention Log Error Entry format
_diag_attn_log_format_standard Attention Log Standard Entry format
_diag_backward_compat TRUE Backward Compatibility for Diagnosability
_diag_cc_enabled TRUE Parameter to enable/disable Diag Call Context
_diag_cdb_logging short Format for CDB Annotation
_diag_conf_cap_enabled TRUE Parameter to enable/disable Diag Configuration Capture
_diag_crashdump_level 10 parameter for systemstate dump level, used by DIAG during crash
_diag_css_lock_wait_retry_count 100 DIAG process kjzm lock wait retry count
_diag_css_lock_wait_timeout 5 DIAG process kjzm lock wait timeout centisecs
_diag_daemon TRUE start DIAG daemon
_diag_dd_global_blockers_dump FALSE if TRUE enables Global blockers dump
_diag_dde_async_age_limit 300 diag dde async actions: message age limit (in seconds)
_diag_dde_async_cputime_limit 300 diag dde async actions: action cputime limit (in seconds)
_diag_dde_async_mode 1 diag dde async actions: dispatch mode
_diag_dde_async_msg_capacity 1024 diag dde async actions: message buffer capacity
_diag_dde_async_msgs 50 diag dde async actions: number of preallocated message buffers
_diag_dde_async_process_rate 5 diag dde async actions: message processing rate - per loop
_diag_dde_async_runtime_limit 900 diag dde async actions: action runtime limit (in seconds)
_diag_dde_async_slaves 5 diag dde async actions: max number of concurrent slave processes
_diag_dde_enabled TRUE enable DDE handling of critical errors
_diag_dde_fc_enabled TRUE Parameter to enable/disable Diag Flood Control
_diag_dde_fc_implicit_time 0 Override Implicit Error Flood Control time parameter
_diag_dde_fc_macro_time 0 Override Macro Error Flood Control time parameter
_diag_dde_inc_proc_delay 1 The minimum delay between two MMON incident sweeps (minutes)
_diag_deadlock_detection_enabled TRUE Deadlock detection enabled in diag
_diag_diagnostics TRUE Turn off diag diagnostics
_diag_dump_request_debug_level 1 DIAG dump request debug level (0-2)
_diag_dump_timeout 30 timeout parameter for SYNC dump
_diag_enable_startup_events FALSE enable events in instance startup notifiers
_diag_hang_analyze_default_dump_level 0 Diag Hang Analyze default dump level
_diag_hang_analyze_elapsed_time_limit 1800 Diag Hang Analyze elapsed time limit in seconds
_diag_hm_rc_enabled TRUE Parameter to enable/disable Diag HM Reactive Checks
_diag_hm_tc_enabled FALSE Parameter to enable/disable Diag HM Test(dummy) Checks
_diag_kjzcmsg_limit 8400000 If non-zero value, upper limit of allocation of kjzcmsg in bytes
_diag_kjzcmsg_send_time_out 600000 Time limit for sends to wait until they are cancelled
_diag_large_packets TRUE DIA* large packets support
_diag_patch_cap_enabled TRUE Parameter to enable/disable Diag Patch Configuration Capture
_diag_pdb_control 0 DIAG PDB Space Management Control Parameter
_diag_pdb_purge_target 90 Controls target percentage for ADR PDB Auto Purge Operation
_diag_pdb_purge_threshold 97 Controls threshold for ADR PDB Auto Purge Operation
_diag_proc_enabled TRUE enable hung process diagnostic API
_diag_proc_max_time_ms 30000 hung process diagnostic API max wait time in milliseconds
_diag_proc_stack_capture_type 1 hung process diagnostic API stack capture type
_diag_test_seg_reinc_mode FALSE Sets trace segmentation to be in reincarnation mode
_diag_uts_control 0 UTS control parameter
_diag_verbose_error_on_init 0 Allow verbose error tracing on diag init
_diag_xm_enabled FALSE If TRUE, DIAG allows message exchanges across DB/ASM boundary
_dictionary_debug_mode 0 enable debug for the dictionary area
_dimension_skip_null TRUE control dimension skip when null feature
_direct_io_skip_cur_slot_on_error TRUE Skip current slot on error
_direct_io_slots 0 number of slots for direct path I/O
_direct_io_via_mapped_pmem TRUE if TRUE, direct path I/O will attempt to memory map files on PMEM
_direct_io_wslots 0 number of write slots for direct path I/O
_direct_path_insert_features 0 disable direct path insert features
_direct_read_decision_statistics_driven TRUE enable direct read decision based on optimizer statistics
_directed_diag_cputime_limit 0 cputime limit for Debug Directed Diagnostics
_directed_diag_enable TRUE Enable Directed Diagnostics
_directed_diag_runtime_limit 600 runtime limit for Debug Directed Diagnostics
_directed_diag_trace_size_limit 104857600 Trace size limit for Debug Directed Diagnostics
_dirty_appliance_mode FALSE Enable appliance mode even on non-appliance
_disable_12751 FALSE disable policy timeout error (ORA-12751)
_disable_12cbigfile FALSE DIsable Storing ILM Statistics in 12cBigFiles
_disable_active_influx_move FALSE disable active influx move during parallel media recovery
_disable_actualization_for_grant FALSE disable actualization of editioned objects on grant
_disable_adaptive_shrunk_aggregation FALSE adaptive shrunk aggregation
_disable_adp_adj_buf_check FALSE No adjacent buffer check for ADP
_disable_appliance_check FALSE Disable appliance-specific code
_disable_appliance_partnering FALSE Disable appliance partnering algorithms
_disable_asm_audit_feat 0 disable ASM audit features
_disable_audit_data_share FALSE Disable Data Share policy
_disable_autotune_gtx FALSE disable autotune global transaction background processes
_disable_block_checking FALSE disable block checking at the session level
_disable_block_corruption_track FALSE disable block corruption tracking
_disable_cdb_view_rc_invalidation FALSE disable Result Cache invalidation for CDB View results
_disable_cell_optimized_backups FALSE disable cell optimized backups
_disable_chunkmv_optimize_exascale FALSE disable chunk move exascale optimization
_disable_con_recurse_queuing TRUE disable parallel statement queuing for containers() recursive SQL
_disable_cpu_check FALSE disable cpu_count check
_disable_cross_shard_row_movement FALSE disable cross shard row movement
_disable_cursor_sharing FALSE disable cursor sharing
_disable_data_block_check_after_decrypt FALSE if TRUE, disable data block check after decryption
_disable_datalayer_sampling FALSE disable datalayer sampling
_disable_dblink_optim TRUE disable intra CDB dblink optimizations
_disable_def_seg_update 0 Disable deferred seg$ update
_disable_destructive_patch_operation TRUE Is destructive operation allowed in a patch
_disable_dict_check_pdb_open FALSE disable PDB pseudo open for dictionary check purpose
_disable_directory_link_check FALSE Disable directory link checking
_disable_duplex_link TRUE Turn off connection duplexing
_disable_duplicate_service_warning FALSE disable listener warning for duplicate service
_disable_fast_aggregation FALSE fast aggregation
_disable_fast_validate FALSE disable PL/SQL fast validation
_disable_fastopen FALSE Do Not Use Fastopen
_disable_fba_qrw 0 disable flashback archiver query rewrite
_disable_fba_wpr 0 disable flashback archiver wait for prepared transactions
_disable_file_locks FALSE disable file locks for control, data, redo log files
_disable_file_resize_logging FALSE disable file resize logging to alert log
_disable_flashback_data_archive FALSE disable pdb-level flashback archiving
_disable_flashback_recyclebin_opt TRUE Don't use the Flashback Recyclebin optimization
_disable_flashback_wait_callback FALSE Disable flashback wait callback
_disable_foreign_scn_adjust FALSE Disable foreign SCN adjustment
_disable_function_based_index FALSE disable function-based index matching
_disable_gvaq_cache FALSE Disable cache
_disable_hcc_array_insert FALSE TRUE - enable conventional inserts into HCC CUs
_disable_health_check FALSE Disable Health Check
_disable_highres_ticks TRUE disable high-res tick counter
_disable_hybrid_tg FALSE Disable Hybrid Transaction Guard
_disable_ilm_internal FALSE Force disable internal ilm stats and drop ilm segment
_disable_image_check FALSE Disable Oracle executable image checking
_disable_implicit_row_movement FALSE disable implicit row movement
_disable_incremental_checkpoints FALSE Disable incremental checkpoints for thread recovery
_disable_incremental_recovery_ckpt FALSE Disable incremental recovery checkpoint mechanism
_disable_index_block_prefetching FALSE disable index block prefetching
_disable_index_pk_using_nonunique FALSE disable sys tbs index primary key using non unique index
_disable_inheritpriv_grant_public FALSE Disable inherit privilege grant to PUBLIC for newly created users
_disable_initial_block_compression FALSE disable initial block compression
_disable_instance_params_check FALSE disable instance type check for ksp
_disable_interface_checking FALSE disable interface checking at startup
_disable_kcb_flashback_blocknew_opt FALSE Disable KCB flashback block new optimization
_disable_kcbhxor_osd FALSE disable kcbh(c)xor OSD functionality
_disable_kcbl_flashback_blocknew_opt FALSE Disable KCBL flashback block new optimization
_disable_kgghshcrc32_osd FALSE disable kgghshcrc32chk OSD functionality
_disable_last_successful_login_time FALSE Disable writing Last Successful Login Time to USER$
_disable_last_successful_login_time_unlimited_iat FALSE Disable writing LSLT for users with Unlimited IAT
_disable_logging FALSE Disable logging
_disable_lostwrite_tablespace_alerts FALSE disable tablespace alerts for LOSTWRITE tablespaces
_disable_mandatory_profile_for_import FALSE Disable Mandatory Profile check for IMPDP invocation inside a PDB
_disable_mandatory_profile_onclone FALSE Disable Mandatory Profile check on clone of a PDB
_disable_marking_noops FALSE Don't mark any captured statements as no-ops.
_disable_metrics_group 0 Disable Metrics Group (or all Metrics Groups)
_disable_modsvc_refresh disable modify service cache refresh
_disable_mt_rfs FALSE disable MT RFS server
_disable_mt_rfs_tracking FALSE disable MT RFS tracking
_disable_multiple_block_sizes FALSE disable multiple block size support (for debugging)
_disable_odm FALSE disable odm feature
_disable_oradebug_commands restricted disable execution of certain categories of oradebug commands
_disable_orphan_pdb_recovery FALSE Disable PDB PITR/FB to orphan PDB incarnation
_disable_os_time_page FALSE disable OS time page
_disable_parallel_conventional_load FALSE Disable parallel conventional loads
_disable_pdb_space_check FALSE Disable pdb storage usage check in the session
_disable_primary_bitmap_switch TRUE disable primary bitmap switch
_disable_privilege_cache_in_auth_table FALSE disables caching privileges used in auth table
_disable_ptl_replay FALSE Is PTL replay disabled during Application Sync
_disable_pushmap FALSE Do Not Use Push Full Extent Map
_disable_read_only_open_dict_check FALSE Disable read-only open dictionary check
_disable_rebalance_space_check FALSE disable space usage checks for storage reconfiguration
_disable_recovery_read_skip FALSE Disable the read optimization during media recovery
_disable_restricted_rac_rolling 0 Disable 2 Phase RAC Rolling Patch feature
_disable_rolling_patch 0 Disable Rolling Patch Feature
_disable_row_movement_auto_rollback FALSE disable row movement auto rollback
_disable_sample_io_optim FALSE disable row sampling IO optimization
_disable_savepoint_reset FALSE disable the fix for bug 1402161
_disable_secure_sga_check TRUE disable SELinux label checking files used for SGA on hugetlbfs
_disable_selftune_checkpointing FALSE Disable self-tune checkpointing
_disable_sensitive_internal FALSE disable internal SQL from showing sensitive information
_disable_sessionless_transaction FALSE Disable Sessionless Transactions
_disable_sga_filedel FALSE disable deletion of files used for SGA
_disable_storage_type FALSE Disable storage type checks
_disable_streams_diagnostics 0 streams diagnostics
_disable_streams_pool_auto_tuning FALSE disable streams pool auto tuning
_disable_sun_rsm TRUE Disable IPC OSD support for Sun RSMAPI
_disable_sv_shared_mode FALSE Force exclusive instance lock acquire for ordered sequences
_disable_system_state 4294967294 disable system state dump
_disable_system_state_wait_samples FALSE Disable system state dump - wait samples
_disable_system_tablespaces_enc_enforcement FALSE if TRUE, disable system tablespaces encryption enforcement
_disable_temp_tablespace_alerts FALSE disable tablespace alerts for TEMPORARY tablespaces
_disable_thread_internal_disable FALSE Disable thread internal disable feature
_disable_txn_alert 0 disable txn layer alert
_disable_uix_pred_push FALSE disable UIX predicate push
_disable_undo_tablespace_alerts FALSE disable tablespace alerts for UNDO tablespaces
_disable_wait_state Disable wait state
_disallow_osu_edition_obj_in_pdb TRUE disallow oracle supplied edition objects in pdb
_discard_cmn_ddl_in_pdb_err FALSE Discard error when Common DDL is attempted in PDB
_discrete_transactions_enabled FALSE enable OLTP mode
_disk_sector_size_override FALSE if TRUE, OSD sector size could be overridden
_diskmon_pipe_name DiSKMon skgznp pipe name
_disksize_binary_search FALSE if set, perform binary search to get disk size if IOCTL fails
_dispatcher_listen_on_vip FALSE Determines if dispatcher listens on VIP if no HOST is supplied
_dispatcher_rate_scale scale to display rate statistic (100ths of a second)
_dispatcher_rate_ttl time-to-live for rate statistic (100ths of a second)
_distinct_agg_optimization_gsets CHOOSE Use Distinct Aggregate Optimization for Grouping Sets
_distinct_view_unnesting FALSE enables unnesting of in subquery into distinct view
_distributed_recovery_connection_hold_time 200 number of seconds RECO holds outbound connections open
_disttxn_for_queries TRUE remote queries start distributed transaction
_dixinv_flags 0 flags for invalidation of dependent objects during DROP INDEX
_dlm_cache_warmup_slaves 2 Number of DLM cache warm up slaves
_dlm_smart_cpu_utilization_threshold 70 Smart Connection Rebalance Host Level CPU Utilization Threshold (in pe
_dlm_stats_collect 1 DLM statistics collection(0 = disable, 1 = enable (default))
_dlm_stats_collect_du_limit 3000 DLM statistics collection disk updates per slot
_dlm_stats_collect_mode 14 DLM statistics collection mode
_dlm_stats_collect_slot_interval 60 DLM statistics collection slot interval (in seconds)
_dlmtrace Trace string of global enqueue type(s)
_dm_dmf_details_compatibility 12.1.0 set dm dmf details compatibility version
_dm_enable_legacy_dmf_output_types FALSE revert dmf output types to pre-12.1.0.1
_dm_inmemory_threshold 1000000 In-memory cardinality threshold
_dm_max_chunk_size 2000 Data Mining Max Chunk Size
_dm_max_shared_pool_pct 5 max percentage of the shared pool to use for a mining model
_dml_batch_error_limit 0 number or error handles allocated for DML in batch mode
_dml_frequency_tracking FALSE Control DML frequency tracking
_dml_frequency_tracking_advance TRUE Control automatic advance and broadcast of DML frequencies
_dml_frequency_tracking_slot_time 15 Time length of each slot for DML frequency tracking
_dml_frequency_tracking_slots 4 Number of slots to use for DML frequency tracking
_dml_monitoring_enabled TRUE enable modification monitoring
_dmm_auto_max_features 500 Auto Max Features
_dmm_blas_library Control which BLAS/LAPACK dynamic library to load
_dmm_cnt_arr_size_threshold 500000 Counts Array Size Threshold
_dmm_details_filter_weight 1 Filter details based on weight
_dmm_disable_onnx 0 Disable ONNX runtime
_dmm_force_treetop_merge 0 Force Treetop Merge
_dmm_inc_cholesky_rows 50000 Incomplete Cholesky number of rows
_dmm_inmemory_limit 20 Max percentage of PGA aggregate limit usable for inmemory models
_dmm_ipp_cutoff 0 Intra-Partition Parallel size cutoff
_dmm_kmean_dense_threshold 500 Kmean densify threshold
_dmm_max_memory_size 1000000 Maximum Memory Size
_dmm_memory_size 64000000 Memory Size
_dmm_nobin_threshold 200 No Binning Row Count Threshold
_dmm_onnx_cache_minmodsz 10485760 ONNX session cache min model size
_dmm_onnx_cache_timeout 120000 ONNX session cache time out
_dmm_onnx_large_model_size 419430400 ONNX large model size
_dmm_onnx_max_image_size 20971520 ONNX maximum image size (MB)
_dmm_onnx_max_num_inmemory_models 16 ONNX maximum number of inmemory models
_dmm_pga_load_threshold 3 Model size less than threshold are loaded into PGA
_dmm_reduction_rate 4 Reduction rate in reduction tree
_dmm_sample_lower_threshold 10000 Minimum Sample Size
_dmm_sample_upper_threshold 500000 Maximum Sample Size
_dmm_ser_test 0 Stress testing for serialized models
_dmm_shared_memory_size 995727769 Maximum memory usage for inmemory models
_dmm_ts_lapack 1 Enable usage of BLAS/LAPACK for Tall Skinny SVD
_dmm_xgboost_max_memory 1000000000 xgboost maximum memory
_dmsqr_qr_chunk_rows 10000 QR maximum chunk rows
_dnfs_rdma_enable rman Enable dNFS RDMA transfers
_dnfs_rdma_max 1048576 Maximum size of dNFS RDMA transfer
_dnfs_rdma_min 8192 Minimum size of dNFS RDMA transfer
_domain_index_batch_size 2000 maximum number of rows from one call to domain index fetch routine
_domain_index_dml_batch_size 200 maximum number of rows for one call to domain index dml routines
_dp_force_length_semantics NONE Force nls length semantics
_dra_bmr_number_threshold 1000 Maximum number of BMRs that can be done to a file
_dra_bmr_percent_threshold 10 Maximum percentage of blocks in a file that can be BMR-ed
_dra_enable_offline_dictionary FALSE Enable the periodic creation of the offline dictionary for DRA
_drm_parallel_freeze TRUE if TRUE enables parallel drm freeze
_drop_flashback_logical_operations_enq FALSE Drop logical operations enqueue immediately during flashback marker ge
_drop_stat_segment 0 drop ilm statistics segment
_drop_table_granule 256 drop_table_granule
_drop_table_optimization_enabled TRUE reduce SGA memory use during drop of a partitioned table
_drop_tablespace_objects 0 GDR: drop all tablespace objects
_ds_enable_auto_txn FALSE Dynamic Sampling Service Autonomous Transaction control parameter
_ds_enable_view_sampling TRUE Use sampling for views in Dynamic Sampling
_ds_iocount_iosize 6553664 Dynamic Sampling Service defaults: #IOs and IO Size
_ds_parse_model 2 Dynamic Sampling Service Parse Model control parameter
_ds_progressive_initial_samples 2 Number of initial samples used for progressive sampling
_ds_progressive_no_matches_min_sample_size 50 Minimum sample size at which progressive sampling report no match
_ds_sampling_method PROGRESSIVE Dynamic sampling method used
_ds_xt_split_count 1 Dynamic Sampling Service: split count for external tables
_dsc_feature_level 0 controls the feature level for deferred segment creation
_dskm_health_check_cnt 20 DiSKMon health check counter
_dskm_single_instance FALSE DSKM and Diskmon operating in Single Instance mode
_dss_cache_flush FALSE enable full cache flush for parallel execution
_dss_cache_flush_threshold 1 threshold when thread ckpt considered over obj ckpt
_dtree_area_size 131072 size of Decision Tree Classification work area
_dtree_binning_enabled TRUE Decision Tree Binning Enabled
_dtree_max_surrogates 1 maximum number of surrogates
_dtree_pruning_enabled TRUE Decision Tree Pruning Enabled
_duality_view_enable_bulk_load FALSE If true, bulk loading will be enabled for inserts
_duality_view_etag_required FALSE If true, etag will be required in input for updates
_dummy_instance FALSE dummy instance started by RMAN
_dump_10261_level 0 Dump level for event 10261, 1=>minimal dump 2=>top pga dump
_dump_common_subexpressions FALSE dump common subexpressions
_dump_connect_by_loop_data FALSE dump connect by loop error message into trc file
_dump_cursor_heap_sizes FALSE dump comp/exec heap sizes to tryace file
_dump_diag_audrec_fail_tab FALSE Dump diagnostics on failure of audit record write to table
_dump_interval_limit 120 trace dump time interval limit (in seconds)
_dump_max_limit 5 max number of dump within dump interval
_dump_qbc_tree 0 dump top level query parse tree to trace
_dump_rcvr_ipc TRUE if TRUE enables IPC dump at instance eviction time
_dump_scheduler_inmemory_trace_on_error TRUE autodump scheduler imt on error
_dump_scheduler_inmemory_trace_on_timeout TRUE autodump scheduler imt on timeout
_dump_scn_increment_stack Dumps scn increment stack per session
_dump_system_state_scope local scope of sysstate dump during instance termination
_dump_trace_scope global scope of trace dump during a process crash
_duplicate_database_key_to_omts TRUE if TRUE, duplicate DB key to OMTS if they do not have a key
_duplicated_table_complete_refresh_percent 50 percent threshold for duplicated table to do complete refresh
_dupt_noupdate 0 disable duplicated table updates
_dynamic_hash_bucket_array TRUE dynamic hash bucket array
_dynamic_processes_force_timeout 6 dynamic process force timeout
_dynamic_processes_max_oom_timeout 300 dynamic process max timeout for out of memory
_dynamic_processes_wait_timeout 100 dynamic process wait timeout for new process
_dynamic_rls_policies TRUE rls policies are dynamic
_dynamic_sequence_cache TRUE Enable/disable sequence dynamic cache sizing
_dynamic_sequence_cache_max 1000000 Sequence dynamic cache maximum size
_dynamic_sequence_cache_scale 10 Max scale factor for dynamic sequence cache size
_dynamic_sessions_force_timeout 30 dynamic session force timeout
_dynamic_sessions_inc_count 1000 dynamic session increment count
_dynamic_sessions_max_oom_timeout 300 dynamic session max timeout for out of memory
_dynamic_sessions_min_force_timeout 5 dynamic min session force timeout
_dynamic_sessions_wait_timeout 100 dynamic session wait timeout for new session
_dynamic_share_range_factor 2 dynamic share range factor
_dynamic_stats_threshold 30 delay threshold (in seconds) between sending statistics messages
_early_flush_delta 0 SCN delta to trigger early log flush
_edition_cleanup FALSE cleanup non-existent and unusable objects in editions name check
_edition_enable_oracle_users Edition enable Oracle supplied users
_eighteenth_spare_parameter eighteenth spare parameter - integer
_eighteenth_spare_pdb_parameter eighteenth spare pdb parameter - integer
_eighth_spare_parameter eighth spare parameter - integer
_eighth_spare_pdb_parameter eighth spare pdb parameter - integer
_eightieth_spare_parameter eightieth spare parameter - integer
_eighty-eighth_spare_parameter eighty-eighth spare parameter - string
_eighty-fifth_spare_parameter eighty-fifth spare parameter - string
_eighty-first_spare_parameter eighty-first spare parameter - string
_eighty-fourth_spare_parameter eighty-fourth spare parameter - string
_eighty-ninth_spare_parameter eighty-ninth spare parameter - string
_eighty-second_spare_parameter eighty-second spare parameter - string
_eighty-seventh_spare_parameter eighty-seventh spare parameter - string
_eighty-sixth_spare_parameter eighty-sixth spare parameter - string
_eighty-third_spare_parameter eighty-third spare parameter - string
_elastic_pool_leader FALSE Enable Elastic Pool Leader PDB functionality
_elastic_pool_member FALSE Enable Elastic Pool Member PDB
_eleventh_spare_parameter eleventh spare parameter - integer
_eleventh_spare_pdb_parameter eleventh spare pdb parameter - integer
_eliminate_common_subexpr TRUE enables elimination of common sub-expressions
_emon_max_active_connections 256 maximum open connections to clients per emon
_emon_outbound_connect_timeout 7200000 timeout for completing connection set up to clients
_emon_pool_inc 4 increment in EMON slaves per pool type
_emon_pool_max 16 maximum number of EMON slaves per pool type
_emon_pool_min 4 minimum number of EMON slaves per pool type
_emon_regular_ntfn_slaves 4 number of EMON slaves doing regular database notifications
_emon_send_timeout 7200000 send timeout after which the client is unregistered
_emx_control 0 EM Express control (internal use only)
_emx_max_sessions 128 Maximum number of sessions in the EM Express cache
_emx_session_timeout 3600 Session timeout (sec) in the EM Express cache
_ena_storage_lmt DEFAULT Enable storage clause for LMT
_enable_12g_bft TRUE enable 12g bigfile tablespace
_enable_942_table_name TRUE enable printing of table name in 942 error message
_enable_Front_End_View_Optimization 1 enable front end view optimization
_enable_NUMA_interleave TRUE Enable NUMA interleave mode
_enable_NUMA_optimization FALSE Enable NUMA specific optimizations
_enable_NUMA_support FALSE Enable NUMA support and optimizations
_enable_ascending_scn_in_online_ddl TRUE enable ascending scn scan in online ddl
_enable_asyncvio FALSE enable asynch vectored I/O
_enable_auto_check_constraints_for_dst_upgrade TRUE enable/disable auto check constraints for DST upgrade
_enable_automatic_maintenance 1 if 1, Automated Maintenance Is Enabled
_enable_automatic_sqltune TRUE Automatic SQL Tuning Advisory enabled parameter
_enable_block_level_transaction_recovery TRUE enable block level recovery
_enable_buffer_header_history TRUE if TRUE, records operation history in buffer headers
_enable_bug_29838374 0 enable/disable bug fix 29838374
_enable_capture_select FALSE Parameter to enable capture of SELECT statements
_enable_cdb_all_sync FALSE Is CDB-wide ALL sync enabled
_enable_cdb_upgrade_capture FALSE Enable capture of CDB upgrade
_enable_check_truncate TRUE enable checking of corruption caused by canceled truncate
_enable_columnar_cache 1 Enable Columnar Flash Cache Rewrite
_enable_concurrent_refresh TRUE enable/disable on-commit concurrent mv refresh
_enable_containers_subquery FALSE enable transformation to containers() sub query
_enable_create_cdb_root_clone FALSE Enables creation of CDB Root clone
_enable_create_protected_profile FALSE Enable protected profile creation
_enable_cscn_caching FALSE enable commit SCN caching for all transactions
_enable_dbwr_auto_tracing 1 enable dbwriter auto-tracing
_enable_dbwr_parallel_invalidations TRUE if TRUE, enables flush and invalidate by DBWRs
_enable_ddl_wait_lock TRUE use this to turn off ddls with wait semantics
_enable_default_affinity 0 enable default implementation of hard affinity osds
_enable_default_temp_threshold TRUE Enable Default Tablespace Utilization Threshold for UNDO Tablespaces
_enable_default_undo_threshold TRUE Enable Default Tablespace Utilization Threshold for TEMPORARY Tablespa
_enable_dml_lock_escalation TRUE enable dml lock escalation against partitioned tables if TRUE
_enable_drop_clone FALSE Is drop of a Root Clone allowed
_enable_dynamic_processes FALSE dynamic process SOs
_enable_dynamic_sessions FALSE dynamic session SOs
_enable_editions_for_users FALSE enable editions for all users
_enable_event_ports TRUE Enable/Disable event ports
_enable_exchange_validation_using_check TRUE use check constraints on the table for validation
_enable_fast_file_zero TRUE enable fast file zero code path
_enable_fast_ref_after_mv_tbs FALSE enable fast refresh after move tablespace
_enable_flash_logging TRUE Enable Exadata Smart Flash Logging
_enable_fsdirect_odmlib TRUE enable or disable FsDirect static ODM library
_enable_fsdirect_pin TRUE enable direct pin of FsDirect blocks
_enable_fsdirect_rac FALSE enable FsDirect in RAC
_enable_generic_encryption_opt TRUE Enable generic encryption optimizations
_enable_gsm_listener_networks TRUE gsm listener in listener networks
_enable_guid_endpoint_service TRUE Enable service functionality for GUID service
_enable_hash_overflow FALSE TRUE - enable hash cluster overflow based on SIZE
_enable_heatmap_internal FALSE heatmap related - to be used by oracle dev only
_enable_http_digest_generation TRUE generation of the HTTP Digest verifier is enabled
_enable_hugetlbfs_dynamic_sga FALSE Enable hugetlbfs based dynamic mode for SGA
_enable_hwm_sync TRUE enable HWM synchronization
_enable_iee_stats TRUE enables IEE stats gathering
_enable_ignorable_error_capture FALSE Capture statement if error is ignorable
_enable_ilm_flush_stats TRUE Enable ILM Stats Flush
_enable_ilm_testflush_stats FALSE Enable Test ILM Stats Flush
_enable_increase_lms_process TRUE set to true to allow _increase_lms_process changes
_enable_ios_spm FALSE Allow Split Mirror operations via IOServer
_enable_iou enable io_uring for SYNC IO, ASYNC IO or both
_enable_ivfkot 0 KTSV Subseg IVFKOT
_enable_json_uga_save_restore FALSE enable json uga save and restore during pdb switch
_enable_kernel_io_outliers FALSE enable kernel I/O outlier feature
_enable_kqf_purge TRUE Enable KQF fixed runtime table purge
_enable_list_io FALSE Enable List I/O
_enable_load_from_clone TRUE Is load from a Root Clone allowed
_enable_load_using_app_version TRUE Enables Oracle-supplied common object loading using app version
_enable_lock_down_on_mv_internal_ddls TRUE Enable Lock down on internal MV DDLs
_enable_log_memory_protection_key TRUE enable memory protection keys (log)
_enable_memory_protection_keys TRUE Enable memory protection keys usage
_enable_meta_snap FALSE Is metadata snapshot allowed
_enable_metrics_allpdb TRUE Enable/Disable Metrics for Root and all PDBs if applicable
_enable_metrics_pdb FALSE Enable/Disable Metrics for this Non-Root PDB
_enable_midtier_affinity TRUE enable midtier affinity metrics processing
_enable_minscn_cr TRUE enable/disable minscn optimization for CR
_enable_module_match TRUE Is match of module name enforced
_enable_multiple_fgprepares FALSE Allow concurrent PREPAREs on the same database
_enable_nativenet_tcpip FALSE Enable skgxp driver usage for native net
_enable_noncdb_capture FALSE Parameter to enable capture in non-CDB
_enable_nvm_dispatcher 0 Enable NVM Dispatcher and/or DMPROC
_enable_obj_queues TRUE enable object queues
_enable_offloaded_writes FALSE Enable offloaded writes for Unit Test
_enable_online_index_without_s_locking TRUE Allow online index creation algorithm without S DML lock
_enable_os_cpu_rm FALSE enable internal OSCPURM testing
_enable_parallel_dml FALSE enables or disables parallel dml
_enable_partial_sync FALSE Is partial sync of a Federation allowed
_enable_pdb_close_abort TRUE Enable PDB shutdown abort (close abort)
_enable_pdb_close_noarchivelog FALSE Enable PDB close abort with no archive logging
_enable_pdb_common_ddl FALSE Enable Common DDL in PDB
_enable_pdb_isolation FALSE Enables Pluggable Database isolation inside a CDB
_enable_pdb_process_limit TRUE Enable process limit as the number of sessions in the PDB.
_enable_pdb_skiplist_recovery TRUE Enable pdb skip list setup during media recovery.
_enable_pdb_skiplist_redogen TRUE Enable pdb skip list setup during redo generation.
_enable_pdc FALSE enable pmem direct commit
_enable_per_container_acl FALSE Enable Per Container ACL
_enable_perpdb_suplog FALSE per pdb supplemental logging
_enable_plcmnt_pol_usage FALSE enable placement policy usage
_enable_pluggable_database TRUE Enable Pluggable Database
_enable_pmem_direct_cache TRUE if TRUE, enable PMEM direct mapped buffers
_enable_pmem_exchange TRUE if TRUE, enable PMEM exchange during promotion
_enable_pmem_prefetch FALSE if TRUE, enable prefecting from PMEM
_enable_pmo_outside_begin_end TRUE Enable PMO outside begin-end block
_enable_protected_audit_policy FALSE Allow Protected Unified Audit Policy Enforcement
_enable_proxy_distr_txn TRUE Enable Distributed Transaction in Proxy PDB
_enable_ptime_update_for_sys FALSE Enable/Disable update of user$ for sys
_enable_query_rewrite_on_remote_objs TRUE mv rewrite on remote table/view
_enable_redo_global_post FALSE LGWR post globally on write
_enable_refresh_schedule TRUE enable or disable MV refresh scheduling (revert to 9.2 behavior)
_enable_rejection_cache TRUE Enable ASSM rejection cache
_enable_reliable_latch_waits TRUE Enable reliable latch waits
_enable_rename_user FALSE enable RENAME-clause using ALTER USER statement
_enable_replay_upgrade_diag TRUE Enable diagnostics for Replay Upgrade
_enable_rlb TRUE enable RLB metrics processing
_enable_rolepriv_conversion FALSE Enable mode to convert roles and privileges in ADB
_enable_row_shipping TRUE use the row shipping optimization for wide table selects
_enable_scheduler_extproc_remote_exec FALSE Enable dbms scheduler to execute script executable using extproc
_enable_schema_synonyms FALSE enable DDL operations (e.g. creation) involving schema synonyms
_enable_scn_wait_interface TRUE use this to turn off scn wait interface in kta
_enable_secure_sub_role FALSE Disallow enabling of secure sub roles
_enable_securefile_flashback_opt TRUE Enable securefile flashback optimization
_enable_sensitive_trace FALSE enable traces to contain sensitive information
_enable_separable_transactions FALSE enable/disable separable transactions
_enable_session_heaps_in_mga TRUE Enable using MGA for session heaps
_enable_shared_multitarget_dblink 0 enable SHARED multitarget database links to shards
_enable_shared_pool_durations TRUE temporary to disable/enable kgh policy
_enable_shared_server_sizing TRUE Enable sizing manager for shared servers
_enable_shared_server_sizing_slope FALSE Enable utility slope in sizing manager for shared servers
_enable_shared_server_vector_io FALSE Enable shared server vector I/O
_enable_single_dgprepare FALSE Disable concurrent PREPAREs in same disk group
_enable_snr_rac_emulation FALSE Dev & QA - turn on RU Locking for SNR on non-RAC
_enable_snr_rac_switchover_protection FALSE enable instance switchover protection for SNR on RAC
_enable_space_preallocation 3 enable space pre-allocation
_enable_spacebg TRUE enable space management background task
_enable_streams_pool_subpools FALSE enable streams pool multiple subpools
_enable_synonym_repoint FALSE enable synonym repoint feature
_enable_sysaux_gdr FALSE GDR: Enable on SYSAUX
_enable_sysaux_metadata_clone FALSE enable sysaux metadata clone
_enable_system_app 2 Enable System app for CDB-wide common users
_enable_tablespace_alerts TRUE enable tablespace alerts
_enable_tcpinfo_statistics 238 Enable TCP Info Statistics
_enable_tenant_id_check FALSE Enable Tenant Id check for database link
_enable_tenant_id_transfer FALSE Enable Tenant Id transfer
_enable_thr_kill TRUE Enable/Disable thread directed signalling
_enable_token_verification FALSE Check token is provided when excuting SQL
_enable_trans_hnsw_vector_scan TRUE If true, Transaction support is enabled in hnsw_vector scan
_enable_type_dep_selectivity TRUE enable type dependent selectivity estimates
_enable_um_based_mga FALSE Enable UM-based MGA
_enable_unified_memory FALSE Enable use of unified PGA pool
_enable_user_pdb_close_abort FALSE Enable user-initiated PDB close abort
_enable_verbose_gdr FALSE GDR: Enable verbose
_enable_view_pdb TRUE Enable Proxy PDB support
_endprot_chunk_comment chk 10235 dflt chunk comment for selective overrun protection
_endprot_heap_comment hp 10235 dflt heap comment for selective overrun protection
_endprot_stack_segments FALSE overrun protection for kgh stack segments
_endprot_subheaps TRUE selective overrun protection for subeheaps
_enforce_extproc_hardening FALSE Enforce hardening on external process invocation inside the PDB
_enforce_lockdown_hardening FALSE Enforce hardening on lockdown related operations inside the PDB
_enforce_minimum_password_rollover_time TRUE Enforce minimum PASSWORD_ROLLOVER_TIME of one hour
_enforce_set_container_hardening NONE Enforce hardening on SET CONTAINER inside the PDB
_enforce_valid_lockdown_profile FALSE Enforce valid lockdown profile inside the PDB
_enforce_walletdir_readpriv TRUE Enforce READ Privilege on Wallet Directory for Outbound Communication
_enqueue_deadlock_detect_all_global_locks FALSE enable deadlock detection on all global enqueues
_enqueue_deadlock_scan_secs 0 deadlock scan interval
_enqueue_deadlock_time_sec 5 requests with timeout <= this will not have deadlock detection
_enqueue_debug_multi_instance FALSE debug enqueue multi instance
_enqueue_hash 1043 enqueue hash table length
_enqueue_hash_chain_latches 4 enqueue hash chain latches
_enqueue_locks 6060 locks for managed enqueues
_enqueue_paranoia_mode_enabled FALSE enable enqueue layer advanced debugging checks
_enqueue_resources 2436 resources for enqueues
_enqueue_scan_interval 0 enqueue scan interval
_enqueue_sync_retry_attempts 15 max number of times the bg process to retry synchronous enqueue open i
_enqueue_sync_sim_mem_error FALSE simulate master instance running out of memory when synchronously gett
_enqueue_wall_clock_time FALSE if TRUE, use KSUFTIME timer
_error_row_predicate_evaluation AUTO skip predicate evaluation for error rows
_event_port_opts Options for event ports
_evt_system_event_propagation TRUE disable system event propagation
_exa_internal_parameters Exascale internal parameters
_exa_pmemlog_threshold_usec 100 maximum i/o time (usecs) for enabled Exadata PMEMLog
_exadata_feature_on FALSE Exadata Feature On
_exclude_seed_cdb_view TRUE exclude PDB$SEED from CDB View Result
_expand_aggregates TRUE expand aggregates
_explain_rewrite_mode FALSE allow additional messages to be generated during explain rewrite
_export_data_parquet_temp_dir DATA_PUMP_DIR Temporary directory used for intermediate files for export data
_expression_tracking_elem_per_bucket 30 Number of expression usage statistics elements per hash bucket
_expression_tracking_latch_count 16 Number of latches for tracking expression usage statistics
_extended_data_link_remote FALSE transform extended data link to use database link
_extended_pruning_enabled TRUE do runtime pruning in iterator if set to TRUE
_external_scn_activity_tracking TRUE enable/disable external scn activity tracking
_external_scn_logging_threshold_seconds 86400 High delta SCN threshold in seconds
_external_scn_rejection_delta_threshold_minutes 0 external SCN rejection delta threshold in minutes
_external_scn_rejection_threshold_hours 24 Lag in hours between max allowed SCN and an external SCN
_external_table_hive_partition_restricted TRUE restrict external tabel hive partition methods to Hive supported
_external_table_smart_scan HADOOP_ONLY External Table Smart Scan
_extra_lmn_enabled TRUE suppl logging for extra record enabled
_failover_svrcsum FALSE enable server checksum to optimize failover
_fair_remote_cvt FALSE if TRUE enables fair remote convert
_fairness_threshold 2 number of times to CR serve before downgrading lock
_fast_connection_version 1 Fast Connect Protocol Version Number
_fast_cr_clone TRUE enable fast cr clone feature
_fast_cursor_reexecute FALSE use more memory in order to get faster execution
_fast_dual_enabled TRUE enable/disable fast dual
_fast_full_scan_enabled TRUE enable/disable index fast full scan
_fast_index_maintenance TRUE fast global index maintenance during PMOPs
_fast_psby_conversion TRUE Enable fast physical standby conversion
_fastpin_enable 1 enable reference count based fast pins
_fatalprocess_redo_dump_time_limit 0 time limit, in secs, for diagnostic redo dumps by a fatal process
_fb_log_max_rereads 100 Maximum number of rereads after reading a corrupt flashback block
_fb_recovery_slave_count 0 Number of recovery slaves to be used by the FLASHBACK DATABASE
_fbda_adv_gbl_bscn_bcast_interval 0 flashback archiver broadcast interval to advance global barrier SCN
_fbda_bscn_lag_warning 600 flashback archiver barrierscn lag warning threshold
_fbda_busy_percentage 0 flashback archiver busy percentage
_fbda_debug_assert 0 flashback archiver debug assert for testing
_fbda_debug_mode 0 flashback archiver debug event for testing
_fbda_global_bscn_lag 0 flashback archiver global barrier scn lag
_fbda_inline_percentage 0 flashback archiver inline percentage
_fbda_limit_warning_frequency 21600 flashback archiver barrier scn lag warning frequency
_fbda_rac_inactive_limit 0 flashback archiver rac inactive limit
_fbda_tcrv_cleanup_lag 3600 flashback archiver tcrv cleanup lag in secs
_federation_max_root_clones 4000 Maximum number of Root Clones per Root
_federation_script FALSE Running a Federation script
_ffs_in_range_scan_threshold 50 threshold of min percentage of block read to use ffs in rs
_fg_fast_sync_slack_usecs 1 DAX log file sync sleep slack time
_fg_fast_sync_sleep_target_pct 50 DAX log file sync sleep target pct
_fg_fast_sync_sleep_usecs 0 DAX log file sync sleep time
_fg_fast_sync_spin_usecs 100 DAX log file sync spin time
_fg_iorm_slaves 1 ForeGround I/O slaves for IORM
_fg_log_checksum TRUE Checksum redo in foreground process
_fg_sync_sleep_usecs 0 Log file sync via usleep
_fic_algorithm_set automatic Set Frequent Itemset Counting Algorithm
_fic_area_size 131072 size of Frequent Itemset Counting work area
_fic_min_bmsize 1024 Frequent Itemset Counting Minimum BITMAP Size
_fifteenth_spare_parameter fifteenth spare parameter - integer
_fifteenth_spare_pdb_parameter fifteenth spare pdb parameter - integer
_fifth_spare_parameter fifth spare parameter - integer
_fifth_spare_pdb_parameter fifth spare pdb parameter - integer
_fiftieth_spare_parameter fiftieth spare parameter - integer
_fiftieth_spare_pdb_parameter fiftieth spare pdb parameter - string list
_fifty-eighth_spare_parameter fifty-eighth spare parameter - integer
_fifty-eighth_spare_pdb_parameter fifty-eighth spare pdb parameter - boolean
_fifty-fifth_spare_parameter fifty-fifth spare parameter - integer
_fifty-fifth_spare_pdb_parameter fifty-fifth spare pdb parameter - boolean
_fifty-first_spare_parameter fifty-first spare parameter - integer
_fifty-first_spare_pdb_parameter fifty-first spare pdb parameter - boolean
_fifty-fourth_spare_parameter fifty-fourth spare parameter - integer
_fifty-fourth_spare_pdb_parameter fifty-fourth spare pdb parameter - boolean
_fifty-ninth_spare_parameter fifty-ninth spare parameter - integer
_fifty-ninth_spare_pdb_parameter fifty-ninth spare pdb parameter - boolean
_fifty-second_spare_parameter fifty-second spare parameter - integer
_fifty-second_spare_pdb_parameter fifty-second spare pdb parameter - boolean
_fifty-seventh_spare_parameter fifty-seventh spare parameter - integer
_fifty-seventh_spare_pdb_parameter fifty-seventh spare pdb parameter - boolean
_fifty-sixth_spare_parameter fifty-sixth spare parameter - integer
_fifty-sixth_spare_pdb_parameter fifty-sixth spare pdb parameter - boolean
_fifty-third_spare_parameter fifty-third spare parameter - integer
_fifty-third_spare_pdb_parameter fifty-third spare pdb parameter - boolean
_file_offline_sync_timeout 900 Timeout to sync file offline enqueue (secs)
_file_set_enqueue_timeout 1200 Timeout to acquire file set enqueue (secs)
_file_size_increase_increment 67108864 Amount of file size increase increment, in bytes
_filemap_dir FILEMAP directory
_filter_roaring_bitmap TRUE If true, Roaring Bitmap is used for filter bitvec
_first_k_rows_dynamic_proration TRUE enable the use of dynamic proration of join cardinalities
_first_spare_parameter first spare parameter - integer
_first_spare_pdb_parameter first spare pdb parameter - integer
_fix_control bug fix control parameter
_fix_control_1 bug fix control overflow parameter-1
_fix_control_2 bug fix control overflow parameter-2
_fix_control_3 bug fix control overflow parameter-3
_fix_control_4 bug fix control overflow parameter-4
_fix_control_5 bug fix control overflow parameter-5
_fix_fuzzy_scn FALSE fix fuzzy SCN
_fixup_all_apps FALSE Callback to fix up replay state of all applications
_fixup_app_pdb_status_in_root application name whose PDB application status should be fixed up
_fixup_cdb_apps FALSE Callback to fix up replay state of CDB-wide applications
_flashback_11_1_block_new_opt FALSE use 11.1 flashback block new optimization scheme
_flashback_allow_noarchivelog FALSE Allow enabling flashback on noarchivelog database
_flashback_archiver_partition_size 0 flashback archiver table partition size
_flashback_barrier_interval 1800 Flashback barrier interval in seconds
_flashback_copy_latches 10 Number of flashback copy latches
_flashback_database_test_only FALSE Run Flashback Database in test mode
_flashback_delete_chunk_MB 128 Amount of flashback log (in MB) to delete in one attempt
_flashback_dynamic_enable TRUE enable flashback enable code path
_flashback_dynamic_enable_failure 0 Simulate failures during dynamic enable
_flashback_enable_ra TRUE Flashback enable read ahead
_flashback_format_chunk_mb 4 Chunk mega-bytes for formatting flashback logs using sync write
_flashback_format_chunk_mb_dwrite 16 Chunk mega-bytes for formatting flashback logs using delayed write
_flashback_fuzzy_barrier TRUE Use flashback fuzzy barrier
_flashback_generation_buffer_size 16777216 flashback generation buffer size
_flashback_hint_barrier_percent 20 Flashback hint barrier percent
_flashback_log_io_error_behavior 0 Specify Flashback log I/O error behavior
_flashback_log_min_size 100 Minimum flashback log size
_flashback_log_rac_balance_factor 10 flashback log rac balance factor
_flashback_log_size 1000 Flashback log size
_flashback_logfile_enqueue_timeout 600 flashback logfile enqueue timeout for opens
_flashback_marker_cache_enabled TRUE Enable flashback database marker cache
_flashback_marker_cache_size 328 Size of flashback database marker cache
_flashback_marker_for_every_grp FALSE generate a new flashback marker for every GRP
_flashback_max_log_size 0 Maximum flashback log size in bytes (OS limit)
_flashback_max_n_log_per_thread 2048 Maximum number of flashback logs per flashback thread
_flashback_max_standby_sync_span 300 Maximum time span between standby recovery sync for flashback
_flashback_n_log_per_thread 128 Desired number of flashback logs per flashback thread
_flashback_pdb_thread_filter_disable FALSE disable per PDB thread filter optimization
_flashback_prepare_log TRUE Prepare Flashback logs in the background
_flashback_reclaim_monitor_window 7 Proactive flashback logs reclaimation window
_flashback_reclaim_speed_up FALSE Proactive flashback logs reclaimation speed up
_flashback_size_based_on_redo TRUE Size new flashback logs based on average redo log size
_flashback_standby_barrier_interval 1 Flashback standby barrier interval in seconds
_flashback_standby_check_barrier_MIRA 20 Flashback standby check barrier generation in seconds
_flashback_standby_check_minpfh_MIRA 15 Flashback standby check minimum high fuzzy scn in seconds
_flashback_stby_support_mira TRUE Flashback database on standby supports MIRA
_flashback_validate_controlfile FALSE validate flashback pointers in controlfile for 11.2.0.2 database
_flashback_verbose_info FALSE Print verbose information about flashback database
_flashback_write_max_loop_limit 10 Flashback writer loop limit before it returns
_flush_ilm_stats 0 flush ilm stats
_flush_log_buffer_force FALSE Flush log buffer force
_flush_log_buffer_timeout 0 Flush log buffer wait time in seconds
_flush_plan_in_awr_sql 0 Plan is being flushed from an AWR flush SQL
_flush_redo_to_standby 0 Flush redo to standby test parameter
_flush_undo_after_tx_recovery TRUE if TRUE, flush undo buffers after TX recovery
_fob_dgaalloc TRUE Fob structure allocation from Domain Global Area memory
_fob_ospshare TRUE Fob structure and file descriptor sharing between threads with-in an O
_force_arch_compress 0 Archive Compress all newly created compressed tables
_force_backupset_zt_decryption FALSE Force ZT decryption for backupsets
_force_cloud_on FALSE simulate EHCC code path enable in Cloud Database
_force_comp_validation_rule_failure OFF force compilation validation failure for rule name
_force_containers_subquery FALSE force transformation to containers() sub query
_force_create_cloud_credential FALSE Force create a scheduler credential as DBMS_CLOUD credential
_force_datefold_trunc FALSE force use of trunc for datefolding rewrite
_force_dax_io_err 0 Force I/O error on online/standby redo log
_force_hash_join_spill FALSE force hash join to spill to disk
_force_hsc_compress FALSE compress all newly created tables
_force_java_pool_zero FALSE force java pool size to be zero bytes
_force_job_creator_as_owner FALSE Force the job creator to be same as the job owner
_force_level0_for_local_create_df FALSE Force level 0 backup for locally created datafile
_force_local_temp FALSE For testing only Forces temporary tablespaces to be LOCAL
_force_logging_in_upgrade TRUE force logging during upgrade mode
_force_move_pdb_keys_from_root FALSE force move PDB keys from CDB$ROOT
_force_no_capture FALSE force no capture in a session
_force_oltp_compress FALSE OLTP Compress all newly created compressed tables
_force_oltp_update_opt TRUE OLTP Compressed row optimization on update
_force_partial_compress FALSE Force using OLTP Partial Compression
_force_pmem_direct_mapped_cache_scan TRUE if TRUE, force PMEM mapped direct path scan to cache path scan
_force_prvtreslv_hostpattern Host name pattern forced to be privately resolved
_force_result_cache_data_share TRUE Force Result Cache for Data Share
_force_rewrite_enable FALSE control new query rewrite features
_force_slave_mapping_intra_part_loads FALSE Force slave mapping for intra partition loads
_force_standard_compile FALSE force compilation of STANDARD
_force_sys_compress TRUE Sys compress
_force_temp_space_cleanup TRUE Force temp space cleanup after PDB close
_force_temptables_for_gsets FALSE executes concatenation of rollups using temp tables
_force_tmp_segment_loads FALSE Force tmp segment loads
_forced_endian_type UNKNOWN Forced endian type of data dictionary
_forceopen_bind_undotbs FALSE Bind to any undo tbs during force open
_foreground_idle_check_timeout 30 idle foreground check timeout
_fortieth_spare_parameter fortieth spare parameter - integer
_fortieth_spare_pdb_parameter fortieth spare pdb parameter - string
_forty-eighth_spare_parameter forty-eighth spare parameter - integer
_forty-eighth_spare_pdb_parameter forty-eighth spare pdb parameter - string list
_forty-fifth_spare_parameter forty-fifth spare parameter - integer
_forty-fifth_spare_pdb_parameter forty-fifth spare pdb parameter - string list
_forty-first_spare_parameter forty-first spare parameter - integer
_forty-first_spare_pdb_parameter forty-first spare pdb parameter - string list
_forty-fourth_spare_parameter forty-fourth spare parameter - integer
_forty-fourth_spare_pdb_parameter forty-fourth spare pdb parameter - string list
_forty-ninth_spare_parameter forty-ninth spare parameter - integer
_forty-ninth_spare_pdb_parameter forty-ninth spare pdb parameter - string list
_forty-second_spare_parameter forty-second spare parameter - integer
_forty-second_spare_pdb_parameter forty-second spare pdb parameter - string list
_forty-seventh_spare_parameter forty-seventh spare parameter - integer
_forty-seventh_spare_pdb_parameter forty-seventh spare pdb parameter - string list
_forty-sixth_spare_parameter forty-sixth spare parameter - integer
_forty-sixth_spare_pdb_parameter forty-sixth spare pdb parameter - string list
_forty-third_spare_parameter forty-third spare parameter - integer
_forty-third_spare_pdb_parameter forty-third spare pdb parameter - string list
_forwarded_2pc_threshold 10 auto-tune threshold for two-phase commit rate across RAC instances
_fourteenth_spare_parameter fourteenth spare parameter - integer
_fourteenth_spare_pdb_parameter fourteenth spare pdb parameter - integer
_fourth_spare_parameter fourth spare parameter - integer
_fourth_spare_pdb_parameter fourth spare pdb parameter - integer
_frame_cache_time 0 number of seconds a cached frame page stay in cache.
_freeze_kgh_timestamp FALSE prevent heap manager timestamp from advancing
_fsdirect_fast_file_create TRUE Allow optimized file creation path for FsDirects
_full_diag_on_rim FALSE rim nodes have full DIA* function
_full_pwise_join_enabled TRUE enable full partition-wise join when TRUE
_fusion_security TRUE Fusion Security
_gas_partition_size 0 Global Address Space Partition Size for each instance
_gby_hash_aggregation_enabled TRUE enable group-by and aggregation using hash scheme
_gby_onekey_enabled TRUE enable use of one comparison of all group by keys
_gby_vector_aggregation_enabled TRUE enable group-by and aggregation using vector scheme
_gc_affinity_locking TRUE if TRUE, enable object affinity
_gc_affinity_locks TRUE if TRUE, get affinity locks
_gc_affinity_ratio 50 dynamic object affinity ratio
_gc_anti_lock_ratio 66 dynamic object anti-lock ratio
_gc_async_send TRUE if TRUE, send blocks asynchronously
_gc_bg_merge TRUE if TRUE, merge pi buffers in the background
_gc_blocking_pins FALSE if TRUE, record a histogram of blocking pins
_gc_buckets_per_latch 0 number of hash buckets per latch
_gc_bypass_readers TRUE if TRUE, modifications bypass readers
_gc_check_bscn TRUE if TRUE, check for stale blocks
_gc_coalesce_recovery_reads TRUE if TRUE, coalesce recovery reads
_gc_cr_server_read_wait TRUE if TRUE, cr server waits for a read to complete
_gc_defer_ping_index_only TRUE if TRUE, restrict deferred ping to index blocks only
_gc_defer_time 0 how long to defer pings for hot buffers in microseconds
_gc_delay_ping TRUE if TRUE, delay pings to hot blocks
_gc_disable_cell_populate FALSE if TRUE, disable cell ram cache populate
_gc_disable_s_lock_brr_ping_check TRUE if TRUE, disable S lock BRR ping check for lost write protect
_gc_down_convert_after_keep TRUE if TRUE, down-convert lock after recovery
_gc_down_convert_after_write TRUE if TRUE, down-convert lock after a write
_gc_drm_windows 8 number of DRM windows
_gc_dump_remote_lock TRUE if TRUE, dump remote lock
_gc_element_percent 105 global cache element percent
_gc_enable_cr_bypass TRUE if TRUE, enable CR bypass mechanism
_gc_fast_index_split_timeout 100 fast index split wait timeout
_gc_fast_index_split_wait 0 fast index split wait usn array size
_gc_fg_merge TRUE if TRUE, merge pi buffers in the foreground
_gc_fg_rollback TRUE if TRUE, fg does rollback instead of cr server
_gc_fg_spin_time 0 foreground msgq spin time
_gc_first_dirty_merge TRUE if TRUE, merge with a pi after first dirty
_gc_first_dirty_pi_merge_switch_current TRUE First dirty pi merge switch current
_gc_flush_during_affinity TRUE if TRUE, flush during affinity
_gc_fusion_compression 1024 compress fusion blocks if there is free space
_gc_global_checkpoint_scn TRUE if TRUE, enable global checkpoint scn
_gc_global_lru AUTO turn global lru off, make it automatic, or turn it on
_gc_global_lru_touch_count 5 global lru touch count
_gc_global_lru_touch_time 60 global lru touch time in seconds
_gc_integrity_checks 1 set the integrity check level
_gc_interconnect_checksum FALSE if TRUE, checksum interconnect blocks
_gc_interrupt_wait_time 1 How long to wait for requests to complete after interrupt
_gc_keep_recovery_buffers TRUE if TRUE, make recovery buffers current
_gc_keep_undo_recovery_buffers TRUE if TRUE, make recovery undo buffers current
_gc_latches 32 number of latches per LMS process
_gc_lease_time 10000 lease time for memoptimize reads
_gc_log_flush TRUE if TRUE, flush redo log before a current block transfer
_gc_max_downcvt 4096 maximum downconverts to process at one time
_gc_max_reg_sz 274877906944 maximum length for memory registration
_gc_msgq_buffers 0 set number of MSGQ buffers
_gc_no_fairness_for_clones TRUE if TRUE, no fairness if we serve a clone
_gc_numa_lock_elements FALSE if TRUE, numa aware lock element distribution
_gc_object_queue_max_length 0 maximum length for an object queue
_gc_override_force_cr TRUE if TRUE, try to override force-cr requests
_gc_partial_cleanout TRUE if TRUE, partial cleanout is enabled
_gc_persistent_read_mostly TRUE if TRUE, enable persistent read-mostly locking
_gc_policy_ckpt_minimum 50 dynamic object policy minimum checkpoint activity per minute
_gc_policy_minimum 15000 dynamic object policy minimum lock activity per minute
_gc_policy_rm_dirty_percent 1 percent of cache which can be dirty for readmostly
_gc_policy_time 20 how often to make object policy decisions in minutes
_gc_rdma_checkpoint_check TRUE if TRUE, use RDMA to optimize object checkpoints
_gc_rdma_connections 8000 maximum number of buffer cache RDMA connections
_gc_read_mostly_flush_check TRUE if TRUE, optimize checkpoints for read mostly objects
_gc_read_mostly_locking TRUE if TRUE, enable read-mostly locking
_gc_reap_stale_messages TRUE Reap stale messages
_gc_sanity_check_cr_buffers FALSE if TRUE, sanity check CR buffers
_gc_save_cleanout FALSE if TRUE, save cleanout to apply later
_gc_serve_from_flash_cache FALSE if TRUE, try to serve a flash cache buffer
_gc_skip_undo_disk_read TRUE if TRUE, skip the disk read for undo blocks
_gc_spin_time 32 rdma spin time
_gc_statistics TRUE global cache statistics level
_gc_temp_affinity FALSE if TRUE, enable global temporary affinity
_gc_timestamps 0 Add timestamps to cache fusion messages
_gc_trace_blocking_pins FALSE if TRUE, trace blocking pins
_gc_trace_freelist_empty FALSE if TRUE, dump a trace when we run out of lock elements
_gc_transfer_ratio 75 dynamic object read-mostly transfer ratio
_gc_try_to_skip_imc_flush TRUE if TRUE, try to skip an imc populate flush
_gc_undo_affinity TRUE if TRUE, enable undo affinity
_gc_undo_header_rdma_read TRUE if TRUE, rdma read of undo headers is enabled
_gc_undo_rdma_read FALSE if TRUE, rdma read of undo blocks is enabled
_gc_vector_read TRUE if TRUE, vector read current buffers
_gcr_change_cached_types TRUE allow automatic changes to cached resource types
_gcr_ckptmon_stall_time 900 CKPT Monitor stall time (secs)
_gcr_ckptmon_trace_time 0 CKPT Monitor trace time (secs)
_gcr_cpu_consumer_dump_level 0 level of process dump performed for CPU consumers
_gcr_cpu_min_free 10 minimum amount of free CPU to flag an anomaly
_gcr_cpu_min_hard_limit 0 hard limit for min free CPU to flag high CPU
_gcr_css_group_large size of large CSS group above which query/update disabled
_gcr_css_group_query_boost allowed number of serial multiple queries
_gcr_css_group_try_lock_delay 10 minimum delay between group locking attempts, secs
_gcr_css_group_update2_interval interval between CSS group updates when busy, secs
_gcr_css_group_update_interval interval between CSS group updates, secs
_gcr_css_use_2group_lock FALSE if FALSE, GCR will not try to lock 2 CSS groups at the same time
_gcr_disabled_actions gcr disabled actions list
_gcr_disabled_metrics gcr disabled metrics list
_gcr_dump_cpu_consumers FALSE if TRUE, enable dumps of CPU consumers
_gcr_enable_async_helpers TRUE if TRUE, GCR will spawn helper actions asynchronously
_gcr_enable_high_cpu_kill FALSE if TRUE, GCR may kill foregrounds under high load
_gcr_enable_high_cpu_rm TRUE if TRUE, GCR may enable a RM plan under high load
_gcr_enable_high_cpu_rt TRUE if TRUE, GCR may boost bg priority under high load
_gcr_enable_high_memory_kill FALSE if TRUE, GCR may kill foregrounds under high memory load
_gcr_enable_kill_inst_diags FALSE if TRUE, GCR will collect OS diags prior to kill instance
_gcr_enable_ktfbue_gather_stats TRUE enable/disable gather stats on X$KTFBUE
_gcr_enable_new_drm_check TRUE if FALSE, revert to old drm load metric
_gcr_enable_pdb_abort FALSE if TRUE, GCR will process pdb abort messages
_gcr_enable_statistical_cpu_check TRUE if FALSE, revert to old cpu load metric
_gcr_ges_cachedres_mult 20 ges cached resources multiplier
_gcr_ges_longchain_mult 5 ges longchain multiplier
_gcr_ges_res_cache_percent_threshold 40 percentage resource cache usage threshold
_gcr_high_cpu_threshold 10 minimum amount of CPU process must consume to be kill target
_gcr_high_cpwt_threshold 30 longest tolerable ctwr process waits time
_gcr_high_fbwt_threshold 300 longest tolerable free buffer waits time
_gcr_high_hashlist_latch_nowait_misses 10000 highest hash list get nowait fails tolerable
_gcr_high_hashlist_latch_wait_misses 10000 highest hash list get wait fails tolerable
_gcr_high_lfsci_threshold 1800 longest tolerable log file switch (checkpoint incomplete) wait
_gcr_high_memory_threshold 10 minimum amount of Memory process must consume to be kill target
_gcr_inst_termination_action auto instance termiation follow-up action
_gcr_max_rt_procs maximum number of RT DLM processes allowed by GCR
_gcr_max_used_swap 75 limit for maximum used swap space before flagging an error
_gcr_mem_min_free 10 minimum amount of free memory to flag an anomaly
_gcr_min_cache_reuse 50 minimum cache reuse rate threshold
_gcr_min_free_memory_hard_limit 1073741824 hard limit for minimum free memory,for high memory systems
_gcr_smf FALSE enable memory information sharing using node shared memory
_gcr_terminate_on_swap FALSE set to true to allow inst termination on swap metric failure
_gcr_tick duration of time tick used by state machine, centisecs
_gcr_use_css TRUE if TRUE the d-state processing code in 38215338 is enabled
_gcs_check_closed_lock 0 cache fusion check closed lock level
_gcs_cluster_flash_cache_mode 0 cluster flash cache mode
_gcs_cluster_flash_cache_persistency FALSE Enable cluster flash cache persistency (FALSE = disable (default), TRU
_gcs_cr_master_ping_remote TRUE if TRUE, cr request from director will ping the remote holder
_gcs_crslave_check_time 10 time interval to check for load on cr slaves in seconds
_gcs_crslave_longq_cnt 2000 long queue time threshold for cr slave
_gcs_crslave_longq_us 1000 long queue time for cr slave in microseconds
_gcs_current_rdma 1 if greater than 0, rdma read of current blocks is enabled
_gcs_current_rdma_grant_global TRUE if TRUE, enable rdma read of current blocks for global role
_gcs_disable_imc_preallocation FALSE disable preallocation for imc memory requirement in RAC
_gcs_disable_remote_handles FALSE disable remote client/shadow handles
_gcs_disable_skip_close_remastering FALSE if TRUE, disable skip close optimization in remastering
_gcs_dynamic_sga FALSE if TRUE, enable dynamic cache fusion resources in runtime
_gcs_dynamic_sga_preference 0 gcs dynamic sga preference
_gcs_dynamic_slaves TRUE if TRUE, it enables dynamic adjustment of the number of gcs slaves
_gcs_enable_private_iterator TRUE Enable private iterator for GCS locks
_gcs_fast_reconfig TRUE if TRUE, enable fast reconfiguration for gcs locks
_gcs_flash_cache_mode 0 flash cache mode
_gcs_freelists_alloc_percent 0 initial allocation of gcs freelists percentage of max usage
_gcs_integrity_checks 1 cache fusion integrity check level
_gcs_kjbdump_threshold 60 threshold timeout to dont dump proc in kjbdmp in seconds
_gcs_latches 128 number of gcs resource hash latches to be allocated per LMS process
_gcs_lsr_frequency 60 frequency of invoking lock state resolution in seconds
_gcs_max_antilocks_unmount_inst 10000 maximum number of anti-locks at unmount instance per LMS
_gcs_min_cr_slaves 0 if non zero, it enables the minimum number of gcs slaves
_gcs_min_slaves 0 if non zero, it enables the minimum number of gcs slaves
_gcs_partial_open_mode 5 partial open cache fusion service in reconfiguration
_gcs_pkey_history 16384 number of pkey remastering history
_gcs_process_in_recovery TRUE if TRUE, process gcs requests during instance recovery
_gcs_recoverable_asserts 0 if non-zero, enable recoverable assert resolution
_gcs_res_freelists 1 number of gcs resource freelists per LMS
_gcs_res_hash_buckets number of gcs resource hash buckets to be allocated
_gcs_res_per_bucket 4 number of gcs resource per hash bucket
_gcs_reserved_resources 64 allocate the number of reserved resources in reconfiguration
_gcs_reserved_shadows 400 allocate the number of reserved shadows in reconfiguration
_gcs_resources 0 number of gcs resources to be allocated
_gcs_shadow_locks 0 number of gcs shadow locks to be allocated
_gcs_spin_check_instance_threshold 60 threshold timeout to dump proc in spin check in seconds
_gcs_spin_check_threshold 4096 spin check attempt count
_gcs_spin_check_time_interval 300 spin check time interval in seconds
_gcs_testing 0 GCS testing parameter
_gcs_trace_bucket FALSE TRUE: use GCS trace bucket and trace LOW by default, FALSE: use defaul
_gcs_trace_bucket_size LMS:1048576-RMV:1048 size of the GCS trace bucket in bytes (format: "LMS:<k>-RMV:<l>-CRV:<m
576-CRV:1048576-DBW:
524288
_gcs_track_reliable_block_sends FALSE if TRUE, track block lost on reliable interconnect
_gcs_verify_antilock FALSE if TRUE, enable anti-lock check
_gdr_clear_active_only FALSE GDR: Clear active ranges only
_gdr_clear_inactive_only FALSE GDR: Clear inactive ranges only
_gdr_control_flags 0 gdr control flags
_gds_allow_nullkey 0 allow the use of nullable shard key columns
_gds_chunk_num 0 number of chunks in sharding environment
_gds_lddlid 0 the id of the last executed DDL query
_gds_max_chunk_num 0 max chunk_num used in sharding environment
_gds_shardgroup_id 0 shardgroup database is in
_generalized_pruning_enabled TRUE controls extensions to partition pruning for general predicates
_ges_aggr_cache_clnup_intvl 25 aggressive cache clean-up interval (in secs) before FG steal
_ges_bidirectional_chaining 0 GES bidirectional chaining
_ges_dd_debug 1 if 1 or higher enables GES deadlock detection debug diagnostics
_ges_debug_acks FALSE Event to debug acks from bcast resource
_ges_default_lmds * default lmds for enqueue hashing
_ges_designated_master TRUE designated master for GES and GCS resources
_ges_diagnostics TRUE if TRUE enables GES diagnostics
_ges_diagnostics_asm_dump_level 11 systemstate level on global enqueue diagnostics blocked by ASM
_ges_direct_free FALSE if TRUE, free each resource directly to the freelist
_ges_direct_free_res_type string of resource types(s) to directly free to the freelist
_ges_dump_open_locks FALSE if TRUE, dump open locks for the LCK process during shutdown
_ges_fggl TRUE DLM fg grant lock on/off
_ges_freeable_res_chunk_free FALSE if TRUE, free dynamic resource chunks which are freeable
_ges_freeable_res_chunk_free_interval 180 time interval for freeing freeable dynamic resource chunks
_ges_gather_res_reuse_stats TRUE if TRUE, gather resource reuse statistics
_ges_hash_groups * enqueue hash table groups
_ges_health_check 0 if greater than 0 enables GES system health check
_ges_lmd_mapping * enqueue to lmd mapping
_ges_max_avg_hash_chainlen 6 maximum average length of GES hash chains
_ges_max_hash_resizes 0 maximum number of GES hash expansions
_ges_mseq_demo 0 demo mseq wrap scenarios (dflt is 0)
_ges_nres_divide 0 how to divide number of enqueue resources among hash tables
_ges_num_aggr_cache_clnup 5 number of aggressive cache clean-up before FG steal
_ges_num_blockers_to_kill 1 number of blockers to be killed for hang resolution
_ges_optimizations 7 GES optimizations level
_ges_resource_memory_opt 36 enable different level of ges res memory optimization
_ges_server_processes 1 number of background global enqueue server processes
_ges_vbfreelists 0 number of valueblock freelists (will be adjusted to power of 2)
_global_hang_analysis_interval_secs 5 the interval at which global hang analysis is run
_globaldict_analyzer_pct 100 Maximum percentage of unique values in analyzer phase for GD
_globaldict_chain_limit 32 Chain limit for global dictionary
_globaldict_check 0 Dictionary checking
_globaldict_chunk_minalloc FALSE Force minimum chunk allocation size
_globaldict_dbg 0 Global dictionary debug modes
_globaldict_enable 2 Enable segment dictionary
_globaldict_max_gdsize 1073741824 Maximum number of entries in a Global dictionary
_globaldict_reprobe_limit 1 Reprobe limit for global dictionary
_globaldict_use_ndv TRUE Use NDV for sizing global dictionary, if available
_globalindex_pnum_filter_enabled TRUE enables filter for global index with partition extended syntax
_graalsql_compilation_dump_graph_on_crash FALSE dump compilation graphs to the trace file when compilation crashes in
_graalsql_compilation_errors_are_fatal FALSE failed compilations are fatal for graalsql
_graalsql_enable_compilation TRUE enable runtime compilation for graalsql
_graalsql_force FALSE Force execution of regular expression using TRegex, errors are fatal i
_graalsql_free_threshold 0 Maximum amount of free memory w.r.t. memory_target required for mainta
_graalsql_load_threshold 10485760 Force execution of regular expression using TRegex, errors are fatal i
_graalsql_max_heap_size 1000 maximum heap size used by GraalSQL in a session, in MB
_graalsql_regexp_accelerator OFF Accelerate regular expression evaluation using GraalSQL
_graalsql_regexp_cache_size 16 Number of compiled regular expressions to maintain in cache.
_graalsql_regexp_errors_are_fatal FALSE failed TRegex automata generation are fatal for graalsql
_graalsql_regexp_offload FALSE Always offload computation of regexp to NLSRTL at runtime.
_grant_read_instead_of_select FALSE grant read privilege instead of select wherever applicable
_grant_secure_role FALSE Disallow granting of SR to other SR or NSR
_grant_unlimited_tablespace_role FALSE Allow UNLIMITED TABLESPACE privilege grant to database roles
_granularity_last_successful_login_time 0 Granularity (in sec) for writing Last Successful Login Time to USER$
_group_leader FALSE enable group leader functionality
_group_membership_bucket_batch_size 8 ksimpoll group membership bucket batch size
_group_membership_bucket_scan_timeout 5 ksimpoll group membership bucket scan timeout
_group_membership_entries_per_bucket 100 ksimpoll group membership entries per bucket
_groupby_nopushdown_cut_ratio 3 groupby nopushdown cut ratio
_groupby_orderby_combine 5000 groupby/orderby don't combine threshold
_gs_anti_semi_join_allowed TRUE enable anti/semi join for the GS query
_gsm GSM descriptions
_gsm_config_vers 0 version of gsm config
_gsm_cpu_thresh 75 CPU busy threshold
_gsm_drv_interval 30 metric derived values interval
_gsm_local_users FALSE create GSM local users
_gsm_max_instances_per_db 8 maximum number of instances per database in gsm cloud
_gsm_max_num_regions 10 maximum number of regions in gsm cloud
_gsm_pool_size 134217728 Global Shared Memory size
_gsm_region_list List of GSM Regions
_gsm_srlat_thresh 20 Single block read latency threshold
_gsm_srvctl_diag_time 0 gsm invoked srvctl pre-timeout diagnostic time
_gsm_srvctl_timeout 0 gsm invoked srvctl timeout
_gsm_svcrgnmax 100 Maximum Service x Region statistics
_gsm_thresh_respct 50 threshold resource percentage
_gsm_thresh_zone 10 threshold zone
_guid_dblink_data_share TRUE Use GUID based DB Link for Data Share
_gwm_autoons_ha_subscription AutoONS HA notification subscription string
_gwm_autoons_rlb_subscription AutoONS RLB notification subscription string
_gwm_database_flags GWM Database Flags
_gwm_db_unique_name gsm db_unique_name name
_gwm_disable_ra FALSE Oracle internal parameter
_gwm_enable_ioft FALSE Allow instead of triggers in sharding
_gwm_force_sync_duptab FALSE force synchronous on creating duplicated table
_gwm_int_dbnum 0 GWM internal db id
_gwm_lagtype gsm lag type
_gwm_max_start_catddlid 0 max ddl_id on catalog at startup.
_gwm_spare1 gsm spare 1
_gwm_spare2 0 gsm spare 2
_gwm_spare3 0 gsm spare 3
_gwm_sr_ddlsync_enabled TRUE enable sr ddl synchronization in oracle sharding
_gwm_sys_ddl 0 allow DDL as SYS
_gwm_use_srvctl 0 use srvctl for service mnagement
_gwr_multimaster 0 enable SHARED multitarget database links to shards
_gws_cache_version 0 the shard/catalog cache version.
_gws_catalog_wallet 0 the sharding catalog has a wallet
_gws_deployed 0 the shardb/catalog has been deployed for sharding.
_gws_directory_sharding 0 directory-based sharding
_gws_encddl 0 Encrypt DDL text.
_gws_sharding_method 0 Sharding method used (system-managed/user-defined/composite)
_hang_aggressive_cloud_mode_enabled FALSE Blocker Resolver aggressive cloud mode enabled
_hang_allow_resolution_on_single_nonrac DBRM Blocker Resolver allow resolution on single non-RAC instances
_hang_analysis_num_call_stacks 3 hang analysis num call stacks
_hang_analyze_dump_session_summary FALSE if TRUE, dump session summary
_hang_analyze_elapsed_time_limit 1800 Hang Analyze elapsed time limit in seconds
_hang_analyze_oradebug_time_limit 900 timeout for oradebug invoked hang analysis
_hang_analyze_session_summary_interval 60 Hang dump session summary frequency
_hang_appl_issue_session_threshold 0 Blocker Resolver application issue session threshold
_hang_application_hang_resolution_enabled FALSE Blocker Resolver application related hang resolution enabled
_hang_asm_hang_resolution_enabled FALSE Blocker Resolver ASM blocker resolution enabled
_hang_base_file_count 5 Number of trace files for the normal base trace file
_hang_base_file_space_limit 100000000 File space limit for current normal base trace file
_hang_blocked_session_percent_threshold 20 Blocker Resolver fast-track blocked session percent threshold
_hang_bool_spare1 TRUE Blocker Resolver bool 1
_hang_bool_spare2 TRUE Blocker Resolver bool 2
_hang_bool_spare3 TRUE Blocker Resolver bool 3
_hang_bool_spare4 TRUE Blocker Resolver bool 4
_hang_cpu_hung_thresh_sec 120 Hang Manager threshold for resmgr:cpu quantum
_hang_cross_boundary_hang_detection_enabled TRUE Blocker Resolver Cross Boundary detection enabled
_hang_cross_boundary_ssd_flood_control_interval 300 Blocker Resolver Cross Boundary SSD flood control interval
_hang_cross_cluster_hang_detection_enabled TRUE Blocker Resolver Cross Cluster detection enabled
_hang_deadlock_resolution_enabled TRUE Blocker Resolver deadlock resolution enabled
_hang_delay_lsr_hang_resolution_enabled TRUE Blocker Resolver delays Triggering LSR and hang resolution
_hang_delay_resolution_for_libcache TRUE Blocker Resolver delays hang resolution for library cache
_hang_detection_enabled TRUE Blocker Resolver detection enabled
_hang_enable_processstate FALSE Enable Process State Dumping
_hang_fast_track_critical_database_processes_enabl TRUE Blocker Resolver fast-track critical database processes enabled
ed
_hang_fast_track_progressing_sessions TRUE Blocker Resolver fast-track progressing sessions enabled
_hang_fast_tracked_hang_verification_interval 10 Blocker Resolver fast-track hang verification interval
_hang_fb_high_wait_count_percentage 30 Blocker Resolver final blocker high wait count percentage
_hang_ft_min_degrading_samples_percent_threshold 60 Blocker Resolver fast-track minimum degrading samples threshold
_hang_hang_analyze_output_hang_chains TRUE if TRUE hang manager outputs hang analysis hang chains
_hang_hang_blocked_session_delta_percent_threshold 20 Blocker Resolver hang's blocked session delta percent threshold
_hang_hiload_promoted_ignored_hang_count 2 Blocker Resolver high load or promoted ignored hang count
_hang_hiprior_session_attribute_list Blocker Resolver high priority session attribute list
_hang_hs_hang_metrics_enabled TRUE Blocker Resolver Hang Specific hang metrics enabled
_hang_hung_session_ewarn_percent 34 Blocker Resolver hung session early warning percentage
_hang_ignore_hngmtrc_interval 150 Blocker Resolver ignore hang metric dependent hang interval
_hang_ignored_hang_count 1 Blocker Resolver ignored hang count
_hang_ignored_hangs_interval 300 Time in seconds ignored hangs must persist after verification
_hang_int_spare1 0 Blocker Resolver int 1
_hang_int_spare2 0 Blocker Resolver int 2
_hang_int_spare3 0 Blocker Resolver int 3
_hang_int_spare4 0 Blocker Resolver int 4
_hang_intersecting_chains_scanning_enabled TRUE Blocker Resolver intersecting chains scanning is allowed
_hang_log_high_load_to_alert FALSE Blocker Resolver log high load to alert log
_hang_log_important_hangs_to_alert TRUE Blocker Resolver log important hangs to alert log
_hang_log_io_hung_sessions_to_alert FALSE Blocker Resolver log sessions hung on IO to alert log
_hang_log_verified_hangs_to_alert FALSE Blocker Resolver log verified hangs to alert log
_hang_low_wait_time_cutoff 6 Blocker Resolver low wait time cutoff in seconds
_hang_lsr_trigger_enabled TRUE Blocker Resolver lsr trigger enabled
_hang_lws_file_count 5 Number of trace files for long waiting sessions
_hang_lws_file_space_limit 100000000 File space limit for current long waiting session trace file
_hang_mark_some_idle_waits_terminal FALSE Blocker Resolver mark some wait events as terminal waits
_hang_max_instance_allow_node_eviction 1 Blocker Resolver maximum instance count to allow node eviction
_hang_max_local_db_clients_allowed 0 Blocker Resolver maximum local db clients allowed
_hang_max_session_hang_time 96 Blocker Resolver maximum session hang time in seconds
_hang_metrics_older_bitmap_threshold 25 Blocker Resolver Hang Metric older bitmap threshold
_hang_metrics_recent_bitmap_threshold 50 Blocker Resolver Hang Metric recent bitmap threshold
_hang_monitor_archiving_related_hang_interval 300 Time in seconds ignored hangs must persist after verification
_hang_msg_checksum_enabled TRUE enable hang graph message checksum
_hang_nested_wait_handling_enabled TRUE Blocker Resolver nested wait event handling enabled
_hang_parsing_hangs_resolution_interval 0 Blocker Resolver parsing hangs resolution interval
_hang_prog_ft_critical_db_proc_verification_interv 900 Blocker Resolver progressing, fast-tracked critical db process verific
al
_hang_promote_process_termination_interval 70 Blocker Resolver promote process termination interval in seconds
_hang_px_resolution_on_asm_enabled TRUE Blocker Resolver px resolution on ASM enabled
_hang_resolution_allow_archiving_issue_termination TRUE Blocker Resolver hang resolution allow archiving issue termination
_hang_resolution_confidence_promotion FALSE Blocker Resolver hang resolution confidence promotion enabled
_hang_resolution_global_hang_confidence_promotion FALSE Blocker Resolver hang resolution global hang confidence promotion
_hang_resolution_partial_hangs_on_asm_enabled TRUE Blocker Resolver resolution of partial hangs on ASM enabled
_hang_resolution_partial_hangs_on_db_enabled TRUE Blocker Resolver resolution of partial hangs on DB enabled
_hang_resolution_percent_hung_sessions_threshold 300 Blocker Resolver hang resolution percent hung sessions threshold
_hang_resolution_percent_hung_sessions_threshold2 5000 Blocker Resolver hang resolution percent hung sessions threshold2
_hang_resolution_policy HIGH Blocker Resolver hang resolution policy
_hang_resolution_promote_process_termination TRUE Blocker Resolver hang resolution promote process termination
_hang_resolution_scope INSTANCE Blocker Resolver hang resolution scope
_hang_root_ha_phase_trigger_time 300 Blocker Resolver root HA phase trigger time
_hang_running_in_lrg FALSE Blocker Resolver running in lrg
_hang_sess_enq_wait_blocked_session_threshold 5 Blocker Resolver session enqueue wait blocked session threshold
_hang_sess_enq_wait_resltn_trig_time 0 Blocker Resolver session enqueue wait resolution trigger time
_hang_session_scan_update_hb_interval 6000 Blocker Resolver session scan update heartbeat interval
_hang_short_stacks_output_enabled TRUE if TRUE hang manager outputs short stacks
_hang_signature_list_match_output_frequency 10 Hang Signature List matched output frequency
_hang_singleton_detection_rw_enabled FALSE Blocker Resolver singleton detection enabled for read-write
_hang_singleton_resolution_rw_enabled FALSE Blocker Resolver singleton resolution enabled for read-write
_hang_statistics_collection_interval 15 Blocker Resolver statistics collection interval in seconds
_hang_statistics_collection_ma_alpha 30 Blocker Resolver statistics collection moving average alpha
_hang_statistics_high_io_percentage_threshold 25 Blocker Resolver statistics high IO percentage threshold
_hang_terminate_session_replay_enabled TRUE Blocker Resolver terminates sessions allowing replay
_hang_trace_interval 32 Blocker Resolver trace interval in seconds
_hang_verification_interval 46 Blocker Resolver verification interval in seconds
_hanganalyze_strip_offset TRUE if TRUE, strips offsets from short stack from HA wait chains
_hard_protection FALSE if TRUE enable H.A.R.D specific format changes
_hash_join_enabled TRUE enable/disable hash join
_hash_multiblock_io_count 0 number of blocks hash join will read/write at once
_hashops_prefetch_size 4 maximum no of rows whose relevant memory locations are prefetched
_hb_redo_interval 1000 generic heartbeat redo frequency
_hb_redo_msg_interval 100 BOC HB redo message interval in ms
_hcs_disable_all_prune FALSE prune hierarchies pinned to ALL level
_hcs_disable_all_qry_optz FALSE skip all query optimization on generated SQL
_hcs_disable_av_gby_opt FALSE disable analytic view query group by optimization
_hcs_disable_av_jback_opt FALSE optimize analytic view query joinback
_hcs_disable_av_sql_hint FALSE disable analytic view sql hint
_hcs_disable_basetbl_transform FALSE disable base table transform
_hcs_disable_bd_agg_opt FALSE optimize base data aggregation
_hcs_disable_calc_dtm_to_out_opt FALSE apply move calc determined hier to output hier optimization
_hcs_disable_calc_opt FALSE calc optimize
_hcs_disable_calc_union_opt FALSE disable calc union optimization
_hcs_disable_cell_qry_atr_prune_opt FALSE apply attribute prune optimization to cell query
_hcs_disable_cell_qry_lvl_prune_opt FALSE apply level prune optimization to cell query
_hcs_disable_cell_qry_mv_cache_opt FALSE apply mv cache optimization to cell query
_hcs_disable_cell_qry_no_calc_nav_opt FALSE apply no calc navigation optimization to cell query
_hcs_disable_cell_qry_no_out_data_opt FALSE apply no output data optimization to cell query
_hcs_disable_col_prune_optz FALSE skip column pruning optimization on generated SQL
_hcs_disable_dt_opt_cell_qry FALSE disable cell query optimizations for datatype queries
_hcs_disable_dtmall_opt FALSE disable determine all optimization
_hcs_disable_dup_nav_calc_opt FALSE duplicate navigation calc optimize
_hcs_disable_dup_src_tbl_opt FALSE apply duplicate src table optimization
_hcs_disable_exists_distinct FALSE no exists distinct
_hcs_disable_filter_hierarchies FALSE filter hierarchies in hcs queries
_hcs_disable_fltr_below_fltr_star_opt FALSE apply filter below filtered star optimization
_hcs_disable_fltr_fact_opt FALSE apply filtered fact optimization
_hcs_disable_fltr_hier_star_opt FALSE apply filtered hierarchy star optimization
_hcs_disable_hier_join_map_nonnull FALSE no hier join map non null
_hcs_disable_inline_tmpl_opt FALSE apply inline single ref top blocks optimization to cell query
_hcs_disable_latest_compat_check FALSE skip compatibility check for latest compatible version
_hcs_disable_level_ord FALSE prune away MAX(MAX(...)) around level order columns
_hcs_disable_level_prune FALSE perform all level pruning
_hcs_disable_level_prune_calc_data_joins FALSE perform level pruning for joins across calc data
_hcs_disable_level_prune_hier_join FALSE perform level pruning from hierarchy joins
_hcs_disable_level_prune_hier_qry FALSE perform level pruning from hierarchy queries
_hcs_disable_level_prune_hierarchize FALSE level prune hierarchize
_hcs_disable_level_prune_in_qry FALSE perform level pruning from level IN conditions
_hcs_disable_level_prune_mbr_lookup FALSE perform level pruning in member lookup queries
_hcs_disable_lvl_vis_lvs_no_tgts_opt FALSE disable level visible leaves no targets optimization
_hcs_disable_materialize FALSE add materialize to result cache hint
_hcs_disable_mdx_cache_hint FALSE generate hcs query mdx cache hints
_hcs_disable_merge_fltr_star_opt FALSE disable merge filter star optimization
_hcs_disable_mv_dense_join_opt FALSE disable move dense join optimization
_hcs_disable_mv_reparse_opt FALSE disable mv reparse optimization
_hcs_disable_mv_rewrite_check FALSE skip MV rewrite check when generating for ANALYTIC VIEW cache
_hcs_disable_no_bdfltrd_opt FALSE apply no base data filtered optimization
_hcs_disable_obj_cache_name FALSE Do not include the object number in an aggregate or level cache
_hcs_disable_opt_cell_qry FALSE optimize cell query
_hcs_disable_opt_estimate FALSE generate opt estimate hints
_hcs_disable_prune_unslvd_star_opt FALSE disable prune unsolved star optimization
_hcs_disable_remote_catalog FALSE disable remote catalog
_hcs_disable_remoteaggr_opt FALSE disable remote aggr optimization
_hcs_disable_result_cache_hint FALSE generate hcs query result cache hints
_hcs_disable_rm_agg_tgt_n_mdxqry_opt FALSE disable remove aggregation targets from no mdx qry optimization
_hcs_disable_rm_like_withs_optz FALSE skip like WITH element removal optimization on generated SQL
_hcs_disable_rm_unused_withs_optz FALSE skip unused WITH element removal optimization on generated SQL
_hcs_disable_smooth_descendants FALSE perform smooth descendants
_hcs_disable_smooth_drill_all FALSE perform smooth drill all
_hcs_disable_smooth_hierarchize FALSE perform hierarchize smoothing
_hcs_disable_smooth_noop_descendants FALSE perform smooth no-op descendants
_hcs_disable_smooth_remove_all FALSE smooth and remove ALL member
_hcs_disable_unnest FALSE disable unnest hint
_hcs_disable_use_cache_star_opt FALSE disable use cache star optimization
_hcs_disable_vector_transform FALSE disable vector transform hint
_hcs_disable_view_merge FALSE disable view merge
_hcs_disable_vis_totals FALSE generate visual totals
_hcs_disable_xform_gby FALSE disable transform group by
_hcs_disable_xjoin_tgt_depths_opt FALSE disable xjoin target depths optimization
_hcs_enable_aggr_opt_estimate FALSE apply OPT_ESTIMATE hint to aggregation queries
_hcs_enable_all_distinct FALSE use distinct instead of rownum=1
_hcs_enable_av_auto_cache TRUE enable AV auto-cache
_hcs_enable_code_trc_call_stack FALSE enable code trace stack
_hcs_enable_cube_join FALSE enable cube join
_hcs_enable_error_on_no_transform FALSE enable error on no transform
_hcs_enable_expose_with_expr FALSE expose internal with_expression
_hcs_enable_fusion_code FALSE enable avtune legacy code path for Fusion
_hcs_enable_in_mem_cdt_hint FALSE add hint opt_param('_in_memory_cdt', 'off')
_hcs_enable_listagg_order FALSE enable listagg order
_hcs_enable_mdx_cache_name_col FALSE add column for mdx cache name
_hcs_enable_mdx_mv_gen FALSE enable mdx mv cache SQL generation
_hcs_enable_mdx_sleep_after_pin FALSE sleep after pinning MDX caches
_hcs_enable_mem_code_trc FALSE enable memory code tracing
_hcs_enable_multi_parent_opt FALSE enable multi-parent optimization
_hcs_enable_no_expand FALSE enable no expand hint
_hcs_enable_parallel_hint FALSE include parallel hint in cell query
_hcs_enable_pred_push TRUE enable optimizer AV predicate pushing via reparse
_hcs_enable_time_code_trc FALSE enable timing code tracing
_hcs_enable_unref_top_chk FALSE enable check for unref top blocks
_hcs_enable_unsupported_calcs FALSE enable unsupported calcs
_hcs_log_max_segments 1000 maximum number of HCS log segments, 0 for unlimited
_hcs_log_segment_size 10 HCS log segment size in MB
_hcs_logging SUMMARY analytic view logging
_hcs_max_mdx_cursors 100 maximum number of MDX cursors
_hcs_mdx_sim_sga_alloc_err NONE simulate mdx sga allocation error
_hcs_mdx_sim_so_fail FALSE simulate state object failure
_hcs_mdx_sleep_loc NONE mdx location to sleep for testing
_hcs_purge_dims_hiers FALSE purge dims and hiers on DDL operations
_hcs_query_hint query hint
_hcs_raise_unexpected_catalog_error FALSE raise unexpected catalog error
_hcs_sim_catalog_error FALSE simulate catalog error
_hcs_sim_no_addrow FALSE simulates missing add row metadata
_hcs_sim_no_chgtrck FALSE simulates missing change tracking table metadata
_hcs_sim_no_cont_obj FALSE simulates missing container_obj# metadata
_hcs_sim_no_dense FALSE simulates missing dense metadata
_hcs_sim_no_dim_outer_join FALSE simulates missing dimension outer join metadata
_hcs_sim_no_joinrel FALSE simulates missing join relationship metadata
_hcs_sim_no_qual_expr FALSE simulates missing qual_expr row in hcs_av_meas$
_hcs_sim_no_trstdcnst FALSE simulates missing trusted constraints metadata
_hcs_sim_pga_expr_parse_err FALSE simulate PGA expression parse error
_hcs_sim_sqlopt_err FALSE simulate sql optimization error
_hcs_stats_max_card 2000000 maximum value for stats cardinality
_heap_dump_timeout 60 timeout in seconds for heap dump
_heartbeat_config NONE TDE heartbeat configuration parameter
_heartbeat_period_multiplier 0 Multiplier for the period of the TDE heartbeat
_heatmap_format_1block FALSE heatmap related - to be used by oracle dev only
_heatmap_min_maxsize 0 Internal testing only
_heur_deadlock_resolution_secs 0 the heuristic wait time per node for deadlock resolution
_hidden_parameter_check_control WARNING diagnostics control for privilege violation
_high_intrinsic_scn_growth_alert 1440 high intrinsic SCN growth rate alert time in minutes
_high_priority_node_instcnt_cap FALSE disable high priority lms when node inst count exceeds cap
_high_priority_processes |LM*|LCK0|CKPT|DBRM| High Priority Process Name Mask
VKRM|RMS0|CR*
_high_threshold_delta 65535 high threshold delta
_highest_priority_processes VKTM|LGWR|LMS*|LM1*| Highest Priority Process Name Mask
LM2*|LM3*|LM4*|LM5*|
LM6*|LM7*|LM8*|LM9*|
RS0*|RS1*|RS2*|CTWR|
LGWR|LMHB|LMS*|LM1*|
LM2*|RS0*|RS1*|RS2*
_highres_drift_allowed_sec 1 allowed highres timer drift for VKTM
_highthreshold_undoretention 31536000 high threshold undo_retention in seconds
_hj_bit_filter_threshold 50 hash-join bit filtering threshold (0 always enabled)
_hm_analysis_oradebug_sys_dump_level 0 the oradebug system state level for hang manager hang analysis
_hm_xm_enabled TRUE If TRUE, DIA0 allows message exchanges across DB/ASM boundary
_hnsw_post_filter_multiply_factor 0 If not 0, Use this as the initial multiplication factor for post filte
_hnsw_post_filter_selectivity 0 If not 0, Use this as the initial selectivity for post filter
_honor_maxfsize_autoextend_on FALSE Honor maxsize of file when autoextend is on
_host_internal_gateway host name of Internal Gateway host
_hpk_compression_range 5 hpk compression range
_hpk_project_cost_weighting 20 hpk project cost weighting
_hpk_throughput_range 5 hpk throughput range
_hstpr_prediction_interval 10080 resource SO prediction interval
_hstpr_use_linear_prediction TRUE use session SO lin-reg prediction
_hstpr_use_periodic_prediction TRUE use session SO periodic prediction
_http_db_service FALSE Use HTTP DB Service
_http_port 0 HTTP port number registered with local listener
_hugetlbfs_SGA_directory @ directory for instance's SGA pseudo files under _hugetlbfs_mount_point
_hugetlbfs_mount_point_for_sga HugeTLBFS mount point to be used
_hw_watchpoint_on TRUE is the HW watchpointing feature turned on?
_hwm_sync_threshold 10 HWM synchronization threshold in percentage
_hybrid_table_hidden_column FALSE enable hidden columns for hybrid table
_iat_frequency_short FALSE Use short interval (5 minutes) for inactive account time job
_idle_session_kill_enabled TRUE enables or disables resource manager session idle limit checks
_idle_session_scan_frequency 60 Idle session scan frequency (in seconds)
_idxrb_rowincr 100000000 proportionality constant for dop vs. rows in index rebuild
_if_not_exists_enabled TRUE enable IF [NOT] EXISTS feature
_ignore_alv_client_outbound_dblink FALSE Ignore ALLOWED_LOGON_VERSION_CLIENT setting for outbound DB Link
_ignore_desc_in_index FALSE ignore DESC in indexes, sort those columns ascending anyhow
_ignore_edition_enabled_for_EV_creation FALSE ignore schema's edition-enabled status during EV creation
_ignore_fg_deps ignore fine-grain dependencies during invalidation
_ignore_pdb_listener FALSE ignore pdb listener
_ignore_spfilemem_nextstartup 0 if TRUE, ignore sp file memory values for the next startup.
_ignore_svc_name_conv_mismatch FALSE Suppress ORA-65174 for service_name_convert clause mismatch
_ilm_mem_limit 10 percentage of the max shared pool heat-map can use - internal
_ilmflush_stat_limit 0 ILM flush statistics limit - Internal testing only
_ilmset_stat_limit 0 ILM set statistics limit - Internal testing only
_ilmstat_memlimit 5 Percentage of shared pool for use by ILM Statistics
_im_graph_table off parameter to control in-memory execution of GRAPH_TABLE
_im_graph_table_exec_control 0 in-memory GRAPH_TABLE execution parameters override
_im_graph_table_max_num_threads 0 number of threads for parallel GRAPH_TABLE in-memory execution
_imado_cdbmem_threshold 95 CDB Memory threshold percent for CDB-AIM action
_imado_diagtasks_log_period 5 IM-ADO diagnostic tasks logging period (in seconds)
_imado_diagtasks_purge_period 30 IM diagnostic tasks purge older than X days
_imado_disable_bg FALSE Disable AIM background task for testing
_imado_disable_cdbaim FALSE Disable CDB AIM
_imado_dml_const 100 AIM DML model overhead constant
_imado_enable_coloptim TRUE Enable AIM Column level optimizations
_imado_enable_imadv TRUE Enable IM Size Advisor View
_imado_enhancements 0 AIM enhancements
_imado_evict_sf 2 AIM evict safety factor
_imado_mem_threshold 98 Memory threshold percent for AIM action
_imado_optim_algo GREEDY Optimization algorithm for AIM
_imado_optimize_period 0 IM-store optimize period for AIM (in minutes)
_imado_sysaux_usage_limit 90 SYSAUX usage percent limit for storing AIM diagnostics
_imado_verification 0 AIM verification state
_image_redo_gen_delay 0 Image redo generation delay in centi-seconds (direct write mode)
_imcu_debug_mode 0 enable debugging for IMCU
_imga_batch_size 1024 Number of elements per task when running graph algorithms
_imga_disable FALSE Disable in-memory execution of graph algorithms
_imgt_enabled FALSE If true, the In-Memory Graph Topology (IMGT) is enabled
_imgt_suppress_gc FALSE If true, the IMGT GC is disabled
_immediate_commit_propagation TRUE if TRUE, propagate commit SCN immediately
_implicit_ssl_wallet TRUE Implicitly use SSL Wallet for UTL_HTTP request
_improved_outerjoin_card TRUE improved outer-join cardinality calculation
_improved_row_length_enabled TRUE enable the improvements for computing the average row length
_imr1_slave 1 IMR1 slave
_imr_active TRUE Activate Instance Membership Recovery feature
_imr_avoid_double_voting TRUE Avoid device voting for CSS reconfig during IMR
_imr_check_css_incarnation_number TRUE IMR verify the global consistency of CSS incarnation number
_imr_controlfile_access_wait_time 10 IMR controlfile access wait time in seconds
_imr_dd_slave_wait_time 30 IMR max time LMON will wait for slave response in seconds
_imr_device_type controlfile Type of device to be used by IMR
_imr_disk_voting_interval 3 Maximum wait for IMR disk voting (seconds)
_imr_diskvote_implementation auto IMR disk voting implementation method
_imr_evicted_member_kill TRUE IMR issue evicted member kill after a wait
_imr_evicted_member_kill_wait 20 IMR evicted member kill wait time in seconds
_imr_extra_reconfig_wait 10 Extra reconfiguration wait in seconds
_imr_highload_threshold IMR system highload threshold
_imr_largest_hub_membership TRUE IMR will derive the largest hub membership from available votes
_imr_max_reconfig_delay 75 Maximum Reconfiguration delay (seconds)
_imr_mount_retry_wait_time 20 IMR mount retry wait time (seconds)
_imr_non_blocking_device_driver TRUE Use the Non Blocking IMR Device Driver Implementation
_imr_remount_retry_wait_time 60 IMR remount retry wait time in (seconds)
_imr_rim_mount_device FALSE Enable rim instances to mount IMR device driver
_imr_rr_holder_kill_time 300 IMR max time instance is allowed to hold RR lock in seconds
_imr_slave_debug 0 IMR slave debug flags
_imr_splitbrain_res_wait 0 Maximum wait for split-brain resolution (seconds)
_imr_systemload_check TRUE Perform the system load check during IMR
_imtxn_table_enable TRUE is In-Memory Txn Table cache enabled
_imtxn_table_flags 3 In-Memory Txn Table cache flags
_imtxn_table_max_inc_per_slt 1 In-Memory Txn Table number of incarnations per slot
_imtxn_table_max_slts_per_seg 34 In-Memory Txn Table Slots per Undo Segment
_imtxn_table_max_undo_segs 1024 In-Memory Txn Table Max Undo Segments in Cache
_imtxnrma_table_enable FALSE is In-Memory RMA Txn Table cache enabled
_imtxnrma_table_flags 0 In-Memory RMA Txn Table cache Flags
_imu_pools 3 in memory undo pools
_in_memory_cdt LIMITED In Memory CDT
_in_memory_cdt_maxpx 4 Max Parallelizers allowed for IMCDT
_in_memory_cleanup_wait_timeout 10000 Tiemout for IMCDT cleanup waiting for end of scan
_in_memory_memory_threshold 40 In Memory CDT memory threshold
_in_memory_tbs_search TRUE FALSE - disable fast path for alter tablespace read only
_in_memory_ts_only OFF In Memory CDT use temp segment only
_in_memory_undo TRUE Make in memory undo for top level transactions
_increase_lmd_process 0 modifying this hidden parameter, will modify the numberof lmd process
_increase_lms_process 0 modifying this hidden parameter, will modify the numberof lms process
_incremental_purge_size 200 Setting for AWR Incremental Purge Size
_incremental_recovery_ckpt_min_batch 500 minimum number of writes for incremental recovery ckpt every second
_index_branch_block_check TRUE Perform block checking on branch index blocks
_index_coalesce_delete_block_only FALSE index coalesce mode to only delete empty leaf blocks
_index_coalesce_max_redo_size_target 0 target for maximum redo generated by index coalesce
_index_debug_mode 0 enable debug for the index layer
_index_join_enabled TRUE enable the use of index joins
_index_load_analysis_frequency 4 index load compression analysis frequency
_index_load_block_check FALSE Perform block checking during direct load of index blocks
_index_load_buf_oltp_over_retry 0 index load buf and comp oltp over-estimation retry
_index_load_buf_oltp_sacrifice_pct 10 index load buf oltp sacrifice pct
_index_load_buf_oltp_under_pct 85 index load buf and comp oltp under-estimation pct
_index_load_last_leaf_comp 85 index load write last leaf compression threshold
_index_load_min_key_count 10 index load min key count for first compression
_index_max_inc_trans_pct 20 max itl expand percentage soft limit during index insert
_index_mvi_oltp_advanced_high FALSE enable compression advanced high for multi-value indexes
_index_partition_large_extents FALSE Enables large extent allocation for partitioned indices
_index_partition_shrink_opt TRUE enable alter index modify partition shrink optimization
_index_pk_using_nonunique FALSE index primary key using non unique index
_index_prefetch_factor 100 index prefetching factor
_index_relax_unique_const FALSE index relax unique index constraint
_index_scan_check_skip_corrupt FALSE check and skip corrupt blocks during index scans
_index_scan_check_stopkey FALSE check stopkey during index range scans
_index_split_chk_cancel 5 index insert split check cancel
_indexable_con_id TRUE indexing of CON_ID column enabled for X$ tables
_indoubt_pdb_transactions_force_outcome COMMIT commit force or rollback force during undo mode switch
_inet_cluster_interconnects InetTable Cluster Interconnects
_influx_scn_wait_timeout 1 active dataguard influx scn wait time in centiseconds
_influx_scn_waits 100000 active dataguard influx scn maximum waits
_init_granule_interval 10 number of granules to process for deferred cache
_init_sql_file ?/rdbms/admin/sql.bs File containing SQL statements to execute upon database creation
q
_inject_simulated_error_period 131072 if non-zero, inject IO error once every param_value times
_inject_startup_fault 0 inject fault in the startup code
_inline_sql_in_plsql FALSE inline SQL in PL/SQL
_inmemory_64k_percent 30 percentage of in-memory area for 64k pools
_inmemory_adg_batched_flush TRUE If true, batched flush is performed
_inmemory_adg_journal_quota FALSE If true, throttled mining is performed under space pressure
_inmemory_adg_parallel_flush TRUE If true, parallel flush is performed
_inmemory_adg_periodic_sort FALSE If true, periodic sort is performed
_inmemory_adg_quiesce_timeout 2 timeout for getting ZQ enq
_inmemory_adjust_overprovisioning 1 IMA background overprovisioning shrink
_inmemory_analyzer_optimize_for 0 inmemory analyzer optimize for
_inmemory_area_autotune TRUE if TRUE, allow imc to grow/shrink in broker's auto tuning.
_inmemory_auto_distribute TRUE If true, enable auto distribute
_inmemory_autodist_2safe FALSE If true, enable auto distribute with 2safe
_inmemory_bf_disable_threshold 0 Threshold to disable IM bloom filter
_inmemory_bg_max_growstep 134217728 max grow step size for im grow in bg
_inmemory_bg_resize_frequency 4 IMA background resize task frequency in minutes
_inmemory_bg_resize_limit 64 IMA background resize per task limit in GB
_inmemory_bg_resize_target_sga_percent 50 IMA max background resize target as SGA percent
_inmemory_buffer_waittime 100 wait interval for one SMU or IMCU to be freed
_inmemory_check_prot_meta FALSE If true, marks SMU area read only to prevent stray writes
_inmemory_checksum FALSE If true, checksums in-memory area to detect stray writes
_inmemory_crclone_buffer_size 131072 In-memory CR Clone buffer size
_inmemory_crclone_min_clones 6 In-memory CR Clone minimum number of clones
_inmemory_crclone_min_space_percent 50 In-memory CR Clone minimum space percentage
_inmemory_crclone_threshold_rows 100 In-memory CR Clone threshold rows
_inmemory_credential 0 Enable in-memory resource principals
_inmemory_cu_checksum FALSE If true, checksums CU to detect stray writes
_inmemory_cudrop_timeout 1000 maximum wait time for IMCU to be freed during drop
_inmemory_dbg_retry_ext FALSE Debug retry load inmemory extern table
_inmemory_dbg_scan 0 In-memory scan debugging
_inmemory_deepvec_transform DISABLED Enable plan transformation for in-memory deep vectorization
_inmemory_default_flags 8459 Default flags based on inmemory_clause_default
_inmemory_default_new FALSE Force in-memory on new tables
_inmemory_default_svc 0 Default In-Memory distribute service type for new tables
_inmemory_default_svcname Default In-Memory distribute service name for new tables
_inmemory_delta_population 0 Control Delta IMCU population
_inmemory_direct_reads 1 direct-reads for SMUs population repopulation
_inmemory_disable_alter_imco_cycle FALSE in-memory disable alter imco cycle
_inmemory_disable_selective_vircols FALSE disable selective columns for VCs/IMEs
_inmemory_distribute_ondemand_timeout 300 On demand timeout for redistribute
_inmemory_distribute_timeout 300 If true, enable auto distribute with 2safe
_inmemory_drcancel_cu_percent 80 IMCU percentage threshold to switch from DR to BC
_inmemory_dynamic_scan_disable_threshold 20 Inmemory dynamic scan disable threshold
_inmemory_dynamic_scans AUTO Enable IM Dynamic Scans
_inmemory_dynamic_scans_analyze_batch_size 5 Inmemory dynamic scan analyze batch size
_inmemory_dynamic_scans_batch_size 500 Number of steady state outstanding tasks
_inmemory_dynamic_scans_dbg 0 Inmemory dynamic scans debug
_inmemory_dynamic_scans_result_buffers 5000 No. of LWT allocated result buffers per thread
_inmemory_enable_bg_resize 0 IMA enable background resize operation
_inmemory_enable_bg_step_grow 0 IMA enable background resize step grow
_inmemory_enable_population_verify 1 verify in-memory population
_inmemory_enable_readonly TRUE Enable Inmemory on read only DB instance
_inmemory_enable_shrink 1 IMA enable shrink support
_inmemory_enable_stat_alert FALSE dump in-memory stats in alert log file
_inmemory_enable_sys FALSE enable in-memory on system tablespace with sys user
_inmemory_enable_tiny_im FALSE IMA enable tiny IM support
_inmemory_enabled FALSE enable in-memory
_inmemory_exclto_timeout 100 maximum wait time to pin SMU for cleanout
_inmemory_expression_count 20 IME number of expressions to lookup from the ESS
_inmemory_expressions_area_percent 10 percentage of in-memory area for IMEUs
_inmemory_expressions_mark_unused FALSE Mark cold IME expressions unused instead of no inmemory
_inmemory_ext_roarea 0 size in bytes of inmemory rw extension area
_inmemory_ext_rwarea 0 size in bytes of inmemory rw extension area
_inmemory_external_table TRUE Enable inmemory extern table
_inmemory_faststart_control_flags 0 in-memory faststart control flags
_inmemory_force_fs FALSE in-memory faststart force
_inmemory_force_fs_tbs SYSAUX in-memory faststart force tablespace
_inmemory_force_fs_tbs_size 1073741824 in-memory faststart force tablespace size
_inmemory_force_jgca_resizing 0 Inmemory Force Join Group Code Array Resizing
_inmemory_force_non_engineered FALSE force non-engineered systems in-memory behavior on RAC
_inmemory_format_compatible 23.7.0.0.0 In-memory format compatibility parameter
_inmemory_fs_blk_inv_blk_percent 50 in-memory faststart CU invalidation threshold(blocks)
_inmemory_fs_blk_inv_blkcnt in-memory faststart CU invalidation threshold(blocks)
_inmemory_fs_dmlverify_read_ahead_cnt 10 in-memory faststart dmlverify read ahead count
_inmemory_fs_enable TRUE in-memory faststart enable
_inmemory_fs_enable_blk_lvl_inv TRUE in-memory faststart enable block level invalidation
_inmemory_fs_imco_timeout 120000 InMemory FastStart IMCO wait timeout in Gen-0
_inmemory_fs_nodml FALSE in-memory faststart assumes no dmls while populating
_inmemory_fs_prune_pct 10 in-memory faststart out of mem prune percent
_inmemory_fs_raise_error FALSE in-memory faststart raise error
_inmemory_fs_tbsmaxsz in-memory faststart tablespace maximum size
_inmemory_fs_test_flags 0 InMemory FastStart testing flags
_inmemory_fs_verify FALSE in-memory faststart verify
_inmemory_fsdw_cnt 2147483647 in-memory faststart defer writes per cycle
_inmemory_fsdw_enable TRUE in-memory faststart deferwrite enable
_inmemory_fsdw_inline FALSE in-memory faststart deferwrite inline
_inmemory_fsdw_maxcnt 10 in-memory faststart max defer writes per cycle
_inmemory_fsdw_maxmem 104755200 in-memory faststart max defer writes memory cap
_inmemory_fsdw_on_populate TRUE in-memory faststart deferwrite on populate
_inmemory_fsdw_penalty_threshold 20 in-memory faststart deferwrite penalty threshold
_inmemory_fsdw_populate_threshold_multiplier 10 in-memory faststart deferwrite populate threshold multiplier
_inmemory_fsdw_priority_penalty_percent 10 In-memory faststart defer write percent priority for penalized
_inmemory_fsdw_priority_population_percent 100 In-memory faststart defer write percent priority for population
_inmemory_fsdw_priority_repopulation_percent 90 In-memory faststart defer write percent priority for repopulation
_inmemory_fsdw_schedlrtm 1 in-memory faststart defer write scheduler cycle (sec)
_inmemory_fsdw_scheduler_dedicated FALSE in-memory faststart defer write dedicated scheduler
_inmemory_fsdw_task_timeout 20 in-memory faststart defer writes task timeout (sec)
_inmemory_fsdw_threshold 300 In-memory faststart defer write minimum interval (millisec)
_inmemory_gd_sym_dict_flags 1 Inmemory GD symbol dictionary flags
_inmemory_granule_size 134217728 In-memory granule size
_inmemory_graph_pop_fg FALSE If true, all graph populations are performed in foreground
_inmemory_grpcolinv_buffer_size 131072 In-memory grpcolinv buffer size
_inmemory_grpcolinv_granularity 1 In-memory grpcolinv blks per colmap
_inmemory_hpk4sql_debug 0 In-Memory HPK4SQL debug
_inmemory_hpk4sql_filter_threshold 1 In-Memory HPK4SQL filter threshold
_inmemory_hpk4sql_flags 0 In-Memory HPK4SQL flags
_inmemory_hpk4sql_kv_seg_size 21 In-Memory HPK4SQL kv segment size
_inmemory_hpk4sql_partbuf_maxrow 1024 In-Memory HPK4SQL partbuf maxrow
_inmemory_hpk4sql_partbuf_minrow 8 In-Memory HPK4SQL partbuf minrow
_inmemory_hpk4sql_pushdown_level 65535 In-Memory HPK4SQL maximun pushdown level
_inmemory_hwm_expand_percent 20 max blks percent can exceed in hwmimcu
_inmemory_hwm_expansion 1 If 0, the highwatermark CU is dropped when expanded
_inmemory_hwm_expansion_rac 0 If 0, the highwatermark CU is dropped when expanded
_inmemory_hwm_inv_blocks_threshold 64 If 0, expansion will occur even for very small hwm imcu
_inmemory_hybrid_selectivity_threshold 37 Selectivity threshold for a qualifying query to enable hybrid IM scans
_inmemory_hybridexa_enable TRUE Inmemory Hybrid Exa Enabled
_inmemory_imco_cycle 120 IMCO cycle in seconds (sleep period)
_inmemory_imcu_align TRUE Enforce 8M IMCU alignment
_inmemory_imcu_populate_minbytes 5242880 minimum free space in IMA for populating IMCU
_inmemory_imcu_source_analyze_bytes 134217728 number of source analyze bytes per IMCU
_inmemory_imcu_source_blocks 0 number of source blocks per IMCU
_inmemory_imcu_source_extents 0 number of source extents per IMCU
_inmemory_imcu_source_maxbytes 0 IMCU maximum source size in bytes
_inmemory_imcu_source_minbytes 1048576 number of minimum source bytes per IMCU
_inmemory_imcu_target_bytes 0 IMCU target size in bytes
_inmemory_imcu_target_maxrows 8388608 IMCU maximum target number of rows
_inmemory_imcu_target_rows 0 IMCU target number of rows
_inmemory_ime_increpop_threshold 1 Invalidation threshold for IME incremental repopulation
_inmemory_incremental_repopulation TRUE If true, incremental repopulation of IMCU will be attempted
_inmemory_invalidate_cursors TRUE In-memory populate enable cursor invalidations
_inmemory_jgbvt_slotsz 6 Inmemory Join Group Bit Vector Table Segment Slot Size Exp
_inmemory_journal_check 0 Depending on value does one of the DML verifications
_inmemory_journal_cla_stride 4 inmemory journal format cla stride
_inmemory_journal_format 1 inmemory journal format options
_inmemory_journal_row_logging FALSE If true, log the entire row into the in-memory journal
_inmemory_journal_scan 0 inmemory journal scan enable
_inmemory_journal_scan_format TRUE If true, the set journal format will be used for scan
_inmemory_lock_for_smucreate FALSE take object lock during smu creation
_inmemory_log_level 0 in-memory log level
_inmemory_max_delta 5 Inmemory max number of deltas per CU
_inmemory_max_expressions_table 50 IME maximum number of SYS_IME VCs in a table
_inmemory_max_pga_usage_percent 50 Allowed PGA usage for IME creation as a percent of hard maximum
_inmemory_max_pga_usage_percol 20 Allowed PGA usage (in MB) for IME creation per column
_inmemory_max_populate_retry 3 IM populate maximum number of retry
_inmemory_max_queued_tasks 0 Maximum queued populating tasks on the auxiliary queue
_inmemory_memprot FALSE enable or disable memory protection for in-memory
_inmemory_metadata_pct 0 controls the pct of IM metadata space
_inmemory_min_delta_blocks 50 Inmemory minimum blocks per delta
_inmemory_min_delta_rows 255 Inmemory minimum rows per delta
_inmemory_min_ima_defersize 0 Defer in-memory area allocation beyond this size
_inmemory_num_hash_latches 256 Maximum number of latches for IM buffers
_inmemory_opaque_contig_space_percent 80 Contiguous memory for opaque VC as a percent of hard maximum
_inmemory_optimized_date_options 6 Creates hidden virtual columns for accelerating date queries
_inmemory_parallel_jghj_enabled TRUE Inmemory Parallel Join Group aware HJ
_inmemory_parallel_load_ext TRUE Parallel load inmemory extern table
_inmemory_partrowlock_threshold 10 Number of committed rows that stay not cleaned out
_inmemory_patch_background_blocks 200 In-memory SMU patch threshold blocks to start background tasks
_inmemory_patch_commit_path FALSE If true, enable the SMU patching from DML path
_inmemory_patch_threshold_blocks 25 In-memory SMU patch threshold blocks
_inmemory_pct_inv_blocks_invalidate_imcu 100 In-memory percentage invalid blocks for IMCU invalidation
_inmemory_pct_inv_rows_invalidate_imcu 50 In-memory percentage invalid rows for IMCU invalidation
_inmemory_pga_per_server 536870912 minimum pga needed per inmemory populate server
_inmemory_pin_hist_mode 16 settings for IM pinned buffer history
_inmemory_populate_blocks_threshold 8 If 0, scan triggers populate for any missing blocks
_inmemory_populate_fg FALSE populate in foreground
_inmemory_populate_grow_trigger_percent 10 IMA trigger for populate size grow as percent of available space
_inmemory_populate_task_self_exec 0 In-Memory racgd populate tasks self execution
_inmemory_populate_test_flags 0 In-memory populate test flags
_inmemory_populate_wait FALSE wait for population to complete
_inmemory_populate_wait_max 600 maximum wait time in seconds for segment populate
_inmemory_prefer_xmem_memcompress Prefer to store tables with given memcompress levels in xmem
_inmemory_prefer_xmem_priority Prefer to store tables with given priority levels in xmem
_inmemory_prefix_encode_dsbs FALSE Prefix-encode the DSB-dictionary
_inmemory_prepopulate TRUE Enable inmemory populate by IMCO
_inmemory_prepopulate_fg 0 Force prepopulate of in-memory segment in foreground
_inmemory_private_journal_aonumbkts 16 Number of priv jrnl anchor object ht bkts
_inmemory_private_journal_dynamic TRUE If true, dynamic sizing will be enabled
_inmemory_private_journal_grplen 64 Number of blocks per PJ group
_inmemory_private_journal_maxexts 5000000 Max number of extents per PJ
_inmemory_private_journal_numbkts 2048 Number of priv jrnl ht bkts
_inmemory_private_journal_numgran 32 Number of granules per HT node
_inmemory_private_journal_quota 100 quota for transaction in-memory private journals
_inmemory_private_journal_sharedpool_quota 20 quota for transaction in-memory objects
_inmemory_pruning ON In-memory pruning
_inmemory_query_check 0 In-memory query checking
_inmemory_query_fetch_by_rowid FALSE In-memory fetch-by-rowid enabled
_inmemory_query_scan TRUE In-memory scan enabled
_inmemory_racgd_flags 0 Inmemory distributed GD flags
_inmemory_racgd_msg_threshold 60 In-Memory Racgd add message threshold
_inmemory_racgd_verify_populate FALSE Inmemory RACGD Populate Verify
_inmemory_relimcusz_thresh 25 in-memory relative imcusz thresh for direct reads
_inmemory_repopulate_disable 2 disable In-memory repopulate
_inmemory_repopulate_flags 2 In-memory repopulate decision flags
_inmemory_repopulate_invalidate_rate_percent 0 In-memory repopulate invalidate rate percent
_inmemory_repopulate_optimize TRUE If true, itl transfer will be attempted during repopulation of IMCU
_inmemory_repopulate_priority_scale_factor 100 In-memory repopulate priority threshold scale factor
_inmemory_repopulate_priority_threshold_block 320 In-memory repopulate priority threshold block
_inmemory_repopulate_priority_threshold_row 160 In-memory repopulate priority threshold row
_inmemory_repopulate_threshold_blocks In-memory repopulate threshold number of modified blocks
_inmemory_repopulate_threshold_blocks_percent 10 In-memory repopulate threshold blocks invalid percentage
_inmemory_repopulate_threshold_mintime 0 In-memory repopulate minimum interval (millisec)
_inmemory_repopulate_threshold_mintime_factor 5 In-memory repopulate minimum interval (N*timetorepop)
_inmemory_repopulate_threshold_rows In-memory repopulate threshold number of modified rows
_inmemory_repopulate_threshold_rows_percent 5 In-memory repopulate threshold rows invalid percentage
_inmemory_repopulate_threshold_scans 0 In-memory repopulate threshold number of scans
_inmemory_retention_time 120 maximum retention time of imcu after repopulation
_inmemory_rows_check_interrupt 1000 Number of rows buffered before interrupt check
_inmemory_rw_pool 5 controls the use of the IM rw pool
_inmemory_scan_invalid_percent 30 Inmemory scan invalid percentage
_inmemory_scan_override FALSE In-memory scan override
_inmemory_servers_throttle_pgalim_percent 55 In-memory populate servers throttling pga limit percentage
_inmemory_shared_journal_maxexts 1024 Max number of extents per SJ
_inmemory_shared_journal_minexts_repop 256 min number of extents per SJ to trigger repop
_inmemory_shrink 0 In-memory shrink
_inmemory_shrink_cleanout_timeout 180 IMCO shrink cleanout timeout
_inmemory_shrink_control_flags 0 In-memory shrink control flags
_inmemory_shrink_gc_retries 3 In-memory shrink gc retries
_inmemory_shrink_test_flags 0 In-memory shrink test flags
_inmemory_size_enable_shrink TRUE if TRUE, allow broker to shrink imc during auto tuning.
_inmemory_small_segment_threshold 65536 In-memory small segment threshold (must be larger for in-memory)
_inmemory_smu_patch_options 7 Inmemory SMU patching options
_inmemory_strdlxid_timeout 0 max time to determine straddling transactions
_inmemory_subcu_histsize 0 In-memory subCU Histogram size
_inmemory_subcusize 512 In-memory subCU size
_inmemory_succesive_bg_rsz_interval 9000 broker inmemory resize success intervals .
_inmemory_suppress_vsga_ima FALSE Suppress inmemory area in v$sga
_inmemory_test_verification 0 In-memory verification testing
_inmemory_transaction_options 10998 in-memory transaction performance options
_inmemory_trickle_populate TRUE Enable inmemory trickle populate
_inmemory_trickle_repopulate TRUE Enable inmemory trickle repopulate
_inmemory_trickle_repopulate_fg 0 Trickle Repopulate in the Foreground
_inmemory_trickle_repopulate_min_interval 300 IMCO Trickle Repopulate Interval
_inmemory_trickle_repopulate_threshold_dirty_ratio 0 IMCO Trickle Repopulate threshold dirty ratio
_inmemory_txn_checksum 0 checksum for SMUs and private journals
_inmemory_txnpjrnl_debug 0 txn priv jrnl debugging parameter
_inmemory_validate_fetch FALSE If true, validate single-row fetch between in-memory and disk
_inmemory_vector_encode_override FALSE Populate and use DSBs for Vector Encode columns
_inmemory_waitinvis_count 8 in-memory waitinvisible retry count
_inmemory_xmem_size 0 size in bytes of in-memory xmem area
_inmemory_xt_virtual_columns DISABLE Controls which user-defined VCs in external tables are stored in-memor
_inplace_update_retry TRUE inplace update retry for ora1551
_inquiry_retry_interval 3 if greater than 0 enables inquiry retry after specified interval
_insert_enable_hwm_brokered TRUE during parallel inserts high water marks are brokered
_inst_locking_period 5 period an instance can retain a newly acquired level1 bitmap
_instance_dbnest_name Instance dbNest Name
_instance_recovery_bloom_filter_buffer_size 4096 Bloom filter buffer size (in bytes) used during claim phase
_instance_recovery_bloom_filter_fprate 0.01 Allowable false positive percentage (0.001% to 100.00%)
_instance_recovery_bloom_filter_size 1048576 Bloom filter size (in bytes) used during claim phase
_instance_recovery_bloom_size_ratio 0.0003 Ratio that scales the size of the bloom filter based on the shared poo
_instant_file_create FALSE enable instant file creation on sparse media
_instant_file_create_exascale FALSE enable instant file creation on Exascale
_intra_cdb_dblink FALSE enable intra CDB implicit dblink
_intrapart_pdml_enabled TRUE Enable intra-partition updates/deletes
_intrapart_pdml_randomlocal_enabled TRUE Enable intra-partition updates/deletes with random local dist
_invalidate_upon_revoke TRUE Invalidate all dependent objects upon revoke
_io_internal_test 0 I/O internal testing parameter
_io_osd_param 1 OSD specific parameter
_io_outlier_threshold 500 Latency threshold for io_outlier table
_io_resource_manager_always_on FALSE io resource manager always on
_io_shared_pool_size 4194304 Size of I/O buffer pool from SGA
_io_slaves_disabled FALSE Do not use I/O slaves
_io_statistics TRUE if TRUE, ksfd I/O statistics are collected
_iocalibrate_init_ios 2 iocalibrate init I/Os per process
_iocalibrate_max_ios 0 iocalibrate max I/Os per process
_ioq_fanin_multiplier 2 IOQ miss count before a miss exception
_ior_serialize_fault 0 inject fault in the ior serialize code
_iorm_tout 1000 IORM scheduler timeout value in msec
_ios_root_directory IOS IOS default root directory
_ioslave_batch_count 1 Per attempt IOs picked
_ioslave_issue_count 500 IOs issued before completion check
_iot_overflow_tblspace_user_default FALSE creates IOT overflow segment in user's default tablespace
_ipacl_feature_control_flags 1 0x01 - enable ACL feature
_ipc_aggr_limit_percentage 40 KSIPC memory as a percentage of PGA aggregate limit
_ipc_config_opts_dyn 0 Dyn config for ipclw startup
_ipc_config_opts_stat 0 static config for ipclw startup
_ipc_emu_aop_timeout 0 static emu AOP tinmeout
_ipc_fail_network 0 Simulate cluster network failer
_ipc_switch_reconfig_needed FALSE to trigger a ipc switch reconfiguration
_ipc_test_failover 0 Test transparent cluster network failover
_ipc_test_mult_nets 0 simulate multiple cluster networks
_ipc_trace_limit Configure LOG trace limits per second for IPC
_iut_enable TRUE Control Index usage tracking
_iut_max_entries 30000 Maximum Index entries to be tracked
_iut_stat_collection_type SAMPLED Specify Index usage stat collection type
_j0_deq_maxwait_time 0 max wait for dequeues scheduled via scheduler jobs
_jg_enable_limit FALSE Control wether the job queue limit should be enfoced for a pdb
_jg_limit_min_free_procs 1 Control how many available job processes are needed for reading from d
_jg_limit_poll_time_csecs 6000 Control polling time for a retry if pdb was over job queue limit, in c
_jg_queue_limit 2 Control how many jobs can a single pdb put in the job queue.This is th
_job_notification_handler_owners List of schemas allowed to own job notification handler
_job_queue_interval 5 Wakeup interval in seconds for job queue co-ordinator
_jobs_allowed_for_common_user FALSE enable/disable common user jobs to run when job_queue_processes=0
_jobs_disable_common_admin_privs FALSE Disable common administrative privileges for jobs
_json_qryovergen_rewrite TRUE enable/disable JSON query over generation function rewrite
_k2q_latches 0 number of k2q latches
_ka_allow_reenable FALSE reenability of kernel accelerator service after disable
_ka_compatibility_requirement all kernel accelerator compatibility operation requirement
_ka_doorbell 0 kernel accelerator doorbell mode
_ka_enabled FALSE Enable/disable kernel accelerator
_ka_grant_policy AUTO KA grant policy to favor fusion grant, make it automatic, or favor KA
_ka_lma_msg_wait_count 100 KA maximum number of requests to retrieve per OSD wait by LMA
_ka_lma_wait_time 200 KA wait time for skjcxWait call by LMA process in microseconds
_ka_locks_per_sector 12 locks per sector in kernel accelerator
_ka_max_wait_delay 1000 KA maximum amount of time before forcing OSD wait call
_ka_mode 0 kernel accelerator mode
_ka_msg_reap_count 40 maximum number of KA messages to receive and process per wait
_ka_msg_wait_count 20 KA maximum number of requests to retrieve per OSD wait
_ka_pbatch_messages TRUE kernel accelerator perform pbatch messages
_ka_scn_accel_shrmem TRUE KA SCN accelerate shr memory
_ka_scn_enabled FALSE KA SCN processing enabled
_ka_scn_use_ka_msgs TRUE KA SCN use KA type messages
_kcb_reused_max 16384 reused array max parameter
_kcbl_assert_reset_slot TRUE assert slot state in kcblResetSlot
_kcc_aging_cool_count 1 Touch count set when buffer cooled
_kcc_aging_freeze_cr FALSE Make buffers always be too cold to keep in cache
_kcc_aging_hot_criteria 2 Touch count which sends a buffer to head of replacement list
_kcc_aging_stay_count 0 Touch count set when buffer moved to head of replacement list
_kcc_aging_touch_time 3 Touch count which sends a buffer to head of replacement list
_kcc_percent_hot_default 50 Percent of default buffer pool considered hot
_kcfis_automem_level 1 Set auto memory management control for kcfis memory allocation
_kcfis_block_dump_level 0 Smart IO block dump level
_kcfis_byteswap_opt_disabled FALSE Don't use byte swapping optimization on the storage cell
_kcfis_caching_enabled TRUE enable kcfis intra-scan session caching
_kcfis_cell_passthru_dataonly TRUE Allow dataonly passthru for smart scan
_kcfis_cell_passthru_enabled FALSE Do not perform smart IO filtering on the cell
_kcfis_cell_passthru_fromcpu_enabled TRUE Enable automatic passthru mode when cell CPU util is too high
_kcfis_cellcache_disabled FALSE Don't use cellcache rewrite optimization on the storage cell
_kcfis_celloflsrv_passthru_enabled FALSE Enable offload server usage for passthru operations
_kcfis_celloflsrv_usage_enabled TRUE Enable offload server usage for offload operations
_kcfis_combine_md_maps_payload 1 enable combining MD and MAPs in single payload
_kcfis_control1 0 Kcfis control1
_kcfis_control2 0 Kcfis control2
_kcfis_control3 0 Kcfis control3
_kcfis_control4 0 Kcfis control4
_kcfis_control5 0 Kcfis control5
_kcfis_control6 0 Kcfis control6
_kcfis_disable_platform_decryption FALSE Don't use platform-specific decryption on the storage cell
_kcfis_dump_corrupt_block TRUE Dump any corrupt blocks found during smart IO
_kcfis_fast_response_enabled TRUE Enable smart scan optimization for fast response (first rows)
_kcfis_fast_response_initiosize 2 Fast response - The size of the first IO in logical blocks
_kcfis_fast_response_iosizemult 4 Fast response - (next IO size = current IO size * this parameter)
_kcfis_fast_response_threshold 1048576 Fast response - the number of IOs after which smartIO is used
_kcfis_fastfileinit_disabled FALSE Don't use ffi during file creation
_kcfis_fault_control 0 Fault Injection Control
_kcfis_fctempopt_mode 1 KCFIS FC Temp Drop FC Optimization Control
_kcfis_io_prefetch_size 8 Smart IO prefetch size for a cell
_kcfis_ioreqs_throttle_enabled TRUE Enable Smart IO requests throttling
_kcfis_ivfscan_fd_max_cache_sz 100 Number of IVF scan FDs cached
_kcfis_ivfscan_fd_max_num_reuse 50 Number of times IVF scan FDs are reused
_kcfis_ivfscan_opt_enabled TRUE enable IVF scan optimizations
_kcfis_kept_in_cellfc_enabled TRUE Enable usage of cellsrv flash cache for kept objects
_kcfis_large_payload_enabled FALSE enable large payload to be passed to cellsrv
_kcfis_largemd_bfquota_kb 16384 Smart IO operation bloom filter metadata size in KBs
_kcfis_largemd_compressed_kb 20480 Smart IO operation maximum compressed metadata size in KBs
_kcfis_largemd_enabled TRUE Smart IO operation large metadata supported enabled
_kcfis_max_cached_sessions 10 Sets the maximum number of kcfis sessions cached
_kcfis_max_ioctl_buffers 100 Sets the maximum number of IOCTL buffers in kcfis
_kcfis_max_out_translations 5000 Sets the maximum number of outstanding translations in kcfis
_kcfis_nonkept_in_cellfc_enabled FALSE Enable use of cellsrv flash cache for non-kept objects
_kcfis_oss_io_size 0 KCFIS OSS I/O size
_kcfis_partner_read_enabled TRUE Smart IO operation partner read enabled
_kcfis_pmem_enabled TRUE RDMA Persistent Memory support enabled
_kcfis_qm_prioritize_sys_plan TRUE Prioritize Quarantine Manager system plan
_kcfis_qm_user_plan_name Quarantine Manager user plan name
_kcfis_rdbms_blockio_enabled FALSE Use block IO instead of smart IO in the smart IO module on RDBMS
_kcfis_read_buffer_limit 0 KCFIS Read Buffer (per session) memory limit in bytes
_kcfis_spawn_debugger FALSE Decides whether to spawn the debugger at kcfis initialize
_kcfis_stats_level 0 sets kcfis stats level
_kcfis_storageidx_diag_mode 0 Debug mode for storage index on the cell
_kcfis_storageidx_disabled FALSE Don't use storage index optimization on the storage cell
_kcfis_storageidx_set_membership_disabled FALSE Don't use set membership optimization on the storage cell
_kcfis_storageidx_xtss_disabled FALSE Don't use storage index optimization on the storage cell for XTSS
_kcfis_test_control1 0 kcfis tst control1
_kcfis_trace_bucket_size 131072 KCFIS tracing bucket size in bytes
_kcfis_xtgran_prefetch_count 1 External Table Smart Scan granule prefetch count
_kcl_debug TRUE if TRUE, record le history
_kcl_index_split TRUE if TRUE, reject pings on blocks in middle of a split
_kcmi_debug 0 Use alert log instead of debug.log
_kcrfwrma_flags 0 KCRFWRMA Flags
_kd_dbg_control 0 kernel data generic control
_kd_rows_chk TRUE enable or disable row block check
_kd_symtab_chk TRUE enable or disable symbol table integrity block check
_kdbl_enable_post_allocation FALSE allocate dbas after populating data buffers
_kdfip_bufl_nbkt 128 memopt w buffers list buckets
_kdfip_cmap_nbkt 16 memopt w chunk map buckets
_kdfip_debug 0 memopt w debug
_kdfip_drain_sleeps 60 memopt w drain coord sleep count
_kdfip_elem_nclatch 64 memopt w chunkmap elem child latches
_kdfip_flush_nrows 2147483647 memopt w flush num rows
_kdfip_flush_rowsz 1048576 memopt w flush row size
_kdfip_flush_rowtm 60 memopt w flush time
_kdfip_iga_adpt_amm_intr 30 memopt w adaptive memory manager task internval
_kdfip_iga_adpt_dec_ldpr 50 memopt w adaptive decrement load percent
_kdfip_iga_adpt_dec_pr 5 memopt w adaptive decrement percent
_kdfip_iga_adpt_inc_ldpr 75 memopt w adaptive increment load percent
_kdfip_iga_adpt_inc_pr 25 memopt w adaptive increment percent
_kdfip_iga_adpt_maxsz 0 memopt w max adaptive global area size
_kdfip_iga_adpt_mem_ret 3 memopt w global area memory retention cycle
_kdfip_iga_bufsz 1048576 memopt w write buffer size
_kdfip_iga_maxsz 2147483648 memopt w max global area size
_kdfip_iga_minsz 268435456 memopt w min global area size
_kdfip_par_flush TRUE memopt w parallel flush
_kdfip_trace FALSE memopt w tracing on-off
_kdfs_fix_control 0 dbfs fix_control
_kdfs_timer_dmp FALSE dbfs timers
_kdfs_trace 1 dbfs trace level
_kdfs_trace_size 131072 size of the uts buffer for generic traces
_kdi_avoid_block_checking FALSE avoid index block checking on sensitive opcodes
_kdic_segarr_sz 0 size threshold for segmented arrays for seg_info_kdicctx
_kdis_reject_level 24 b+tree level to enable rejection limit
_kdis_reject_limit 5 #block rejections in space reclamation before segment extension
_kdis_reject_ops FALSE enable rejection heuristic for branch splits
_kdis_split_xid_prune TRUE prune xids during an index split
_kdivcc_test_flags 0 Covering Column test
_kdivs_test_null_hnsw_snaphot FALSE If true, KDIVS receive a NULL snapshot during HNSW index search
_kdizoltp_uncompsentinal_freq 16 kdizoltp uncomp sentinal frequency
_kdkv_fg_drop_memopt TRUE hashindex foreground drop
_kdkv_fg_no_memopt FALSE hashindex foreground cleanup
_kdkv_fg_populate FALSE hashindex foreground populate
_kdkv_fg_repopulate FALSE hashindex foreground repopulate
_kdkv_force_fastpath FALSE kdkv fast path on-off
_kdkv_force_samehash FALSE kdkv hash to same bucket on-off
_kdkv_index_lossy TRUE hashindex lossiness on-off
_kdkv_index_relocate FALSE hashindex relocation on-off
_kdkv_indexinvalid FALSE objd and rdba based index invalidation
_kdkv_trace FALSE kdkv tracing on-off
_kdlf_check_rci 0 Control Lob RCI checks in block checking
_kdlf_direct_inode_path TRUE enable kdlf direct inode path for vanilla lobs
_kdlf_fast_move_compressed_lob TRUE kdlf fast move commpressed lobs
_kdlf_layers_cache TRUE enable kdlf securefiles layers cache
_kdlf_new_compression_adv TRUE enable new compression advisor for lobs
_kdlf_read_flag 0 kdlf read flag
_kdlf_track_itrcnt 200 Change the no of iterations to track
_kdli_STOP_bsz 0 undocumented parameter for internal use only
_kdli_STOP_dba 0 undocumented parameter for internal use only
_kdli_STOP_fsz 0 undocumented parameter for internal use only
_kdli_STOP_nio 0 undocumented parameter for internal use only
_kdli_STOP_tsn 0 undocumented parameter for internal use only
_kdli_adaptive_cache_inode TRUE enable adaptive inode cache
_kdli_adpt_sio_mem TRUE adaptive sio memory buffer
_kdli_allow_corrupt FALSE allow corrupt filesystem_logging data blocks during read/write
_kdli_buffer_inject TRUE use buffer injection for CACHE [NO]LOGGING lobs
_kdli_cache_hless_limit 4 #of extents to cache headless inode
_kdli_cache_inode TRUE cache inode state across calls
_kdli_cache_inode_off_limit 8192 cache_off limit for adaptive inode cache
_kdli_cache_read_threshold 0 minimum lob size for cache->nocache read (0 disables heuristic)
_kdli_cache_size 8 maximum #entries in inode cache
_kdli_cache_verify FALSE verify cached inode via deserialization
_kdli_cache_write_threshold 0 minimum lob size for cache->nocache write (0 disables heuristic)
_kdli_cacheable_length 0 minimum lob length for inode cacheability
_kdli_checkpoint_flush FALSE do not invalidate cache buffers after write
_kdli_dbc none override db_block_checking setting for securefiles
_kdli_delay_flushes TRUE delay flushing cache writes to direct-write lobs
_kdli_descn_adj FALSE coalesce extents with deallocation scn adjustment
_kdli_flush_cache_reads FALSE flush cache-reads data blocks after load
_kdli_flush_injections TRUE flush injected buffers of CACHE NOLOGGING lobs before commit
_kdli_force_cr TRUE force CR when reading data blocks of direct-write lobs
_kdli_force_cr_meta TRUE force CR when reading metadata blocks of direct-write lobs
_kdli_force_storage none force storage settings for all lobs
_kdli_full_readahead_threshold 0 maximum lob size for full readahead
_kdli_full_vll FALSE materialize full vll lobmap for reads
_kdli_icache_entries 3 size of itree cache
_kdli_inject_assert 0 inject asserts into the inode
_kdli_inject_batch 0 buffer injection batch size [1, KCBNEWMAX]
_kdli_inject_crash 0 inject crashes into the inode
_kdli_inline_xfm TRUE allow inline transformed lobs
_kdli_inode_preference data inline inode evolution preference (data, headless, lhb)
_kdli_inplace_overwrite 0 maximum inplace overwrite size (> chunksize)
_kdli_itree_entries 0 #entries in lhb/itree blocks (for testing only)
_kdli_memory_protect FALSE trace accesses to inode memory outside kdli API functions
_kdli_mts_so TRUE use state objects in shared server for asyncIO pipelines
_kdli_oneblk FALSE allocate chunks as single blocks
_kdli_preallocation_mode length preallocation mode for lob growth
_kdli_preallocation_pct 0 percentage preallocation [0 .. inf) for lob growth
_kdli_ralc_length 10485760 lob length threshold to trigger rounded allocations
_kdli_ralc_rounding 1048576 rounding granularity for rounded allocations
_kdli_rci_lobmap_entries 255 #entries in RCI lobmap before migration to lhb
_kdli_readahead_limit 0 shared/cached IO readahead limit
_kdli_readahead_strategy contig shared/cached IO readahead strategy
_kdli_recent_scn FALSE use recent (not dependent) scns for block format/allocation
_kdli_reshape FALSE reshape an inode to inline or headless on length truncation
_kdli_rinode_purge TRUE enable read inode purge
_kdli_safe_callbacks TRUE invoke inode read/write callbacks safely
_kdli_sio_async TRUE asynchronous shared IO
_kdli_sio_backoff FALSE use exponential backoff when attempting SIOP allocations
_kdli_sio_bps 0 maximum blocks per IO slot
_kdli_sio_chkpt TRUE Control SIO checkpointing during PQ Direct reads/parallel scans
_kdli_sio_dop 2 degree-of-parallelism in the SIO keep pool
_kdli_sio_fbwrite_pct 35 percentage of buffer used for direct writes in flashback-db
_kdli_sio_fileopen none shared IO fileopen mode: datasync vs nodatasync vs async
_kdli_sio_flush FALSE enable shared IO pool operations
_kdli_sio_free TRUE free IO buffers when not in active use
_kdli_sio_min_read 0 shared IO pool read threshold
_kdli_sio_min_write 0 shared IO pool write threshold
_kdli_sio_nbufs 8 maximum #IO buffers to allocate per session
_kdli_sio_niods 8 maximum #IO descriptors to allocate per session
_kdli_sio_on TRUE enable shared IO pool operations
_kdli_sio_pga FALSE use PGA allocations for direct IO
_kdli_sio_pga_top FALSE PGA allocations come from toplevel PGA heap
_kdli_sio_strategy extent shared IO strategy: block vs. extent
_kdli_sio_write_pct 100 percentage of buffer used for direct writes
_kdli_small_append_redo TRUE detect and use redo optimizations for small appends
_kdli_small_cache_limit 32 size limit of small inode cache
_kdli_sort_dbas FALSE sort dbas during chunkification
_kdli_space_cache_limit 2048 maximum #blocks in per-segment space cache
_kdli_space_cache_segments 16 #segments in space cache
_kdli_squeeze TRUE compact lobmap extents with contiguous dbas
_kdli_timer_dmp FALSE dump inode timers on session termination
_kdli_timer_trc FALSE trace inode timers to uts/tracefile
_kdli_trace 0 inode trace level
_kdli_vll_direct TRUE use skip-navigation and direct-positioning in vll-domain
_kdlu_integrated_bucket TRUE An integrated DBGT bucket for KDLI and other layers
_kdlu_max_bucket_size 6291456 UTS kdlu bucket size
_kdlu_max_bucket_size_mts 131072 UTS kdlu bucket size for mts
_kdlu_timer_dmp FALSE dump inode timers on session termination
_kdlu_trace_layer 0 UTS kdlu per-layer trace level
_kdlu_trace_system 0 UTS system dump
_kdlw_enable_ksi_locking FALSE enable ksi locking for lobs
_kdlw_enable_write_gathering TRUE enable lob write gathering for sql txns
_kdlwp_flush_threshold 4194304 WGC flush threshold in bytes
_kdlwp_memory_check TRUE bug 31354021: memory diagnostics
_kdlwp_multi_wgc TRUE enable multiple wgc
_kdlxp_cmp_subunit_size 262144 size of compression sub-unit in bytes
_kdlxp_cmpappopt TRUE New securefile compression algorithms
_kdlxp_dedup_flush_threshold 8388608 deduplication flush threshold in bytes
_kdlxp_dedup_hash_algo SHA1 secure hash algorithm for deduplication - only on SecureFiles
_kdlxp_dedup_inl_pctfree 5 deduplication pct size increase by which inlining avoided
_kdlxp_dedup_prefix_threshold 1048576 deduplication prefix hash threshold in bytes
_kdlxp_dedup_wapp_len 0 deduplication length to allow write-append
_kdlxp_lobcmpadp FALSE enable adaptive compression - only on SecureFiles
_kdlxp_lobcmplevel 2 Default securefile compression
_kdlxp_lobcmprciver 1 Default securefile compression map version
_kdlxp_lobcompress FALSE enable lob compression - only on SecureFiles
_kdlxp_lobdeduplicate FALSE enable lob deduplication - only on SecureFiles
_kdlxp_lobdedupvalidate TRUE enable deduplicate validate - only on SecureFiles
_kdlxp_lobencrypt FALSE enable lob encryption - only on SecureFiles
_kdlxp_lz4zstdcmpalgos TRUE New securefile compression algorithms
_kdlxp_mincmp 20 minimum comp ratio in pct - only on SecureFiles
_kdlxp_mincmplen 200 minimum loblen to compress - only on SecureFiles
_kdlxp_minxfm_size 32768 minimum transformation size in bytes
_kdlxp_no_dedup_on_insert FALSE disable deduplication for new inserts of deduplicated lobs
_kdlxp_spare1 0 deduplication spare 1
_kdlxp_uncmp FALSE lob data uncompressed - only on SecureFiles
_kdlxp_xfmcache TRUE enable xfm cache - only on SecureFiles
_kdmado_aim_imelig_eval_interval 60 IM eligibility evaluation interval for AIM (in minutes)
_kdmado_disable_async TRUE Disable async actions for AIM High
_kdmado_disable_imelig_aim TRUE Disable IM eligibility test for AIM High
_kdmado_im_txn_mntn_wt_per_row 1 AIM IM Txn maintenance wait time per row
_kdmado_partial_pop_backoff_mb 64 AIM Backoff for partial populate
_kdmado_st_txn_test 0 AIM HT ST_TXN parameter for testing
_kdmado_wt_txn_test 0 AIM HT WT_TXN parameter for testing
_kdmimadv_constant_speed FALSE Allow AIM algorithm
_kdt_buffering TRUE control kdt buffering for conventional inserts
_kdtgsp_retries 1024 max number of retries in kdtgsp if space returns same block
_kdu_array_depth 16 array update retry recursion depth limits
_kdz_clear_analysis_percent 60 percentage to clear dictionary analysis
_kdz_hcc_flags 0 Miscellaneous HCC flags
_kdz_hcc_track_upd_rids FALSE Enable rowid tracking during updates
_kdz_pcode_flags 0 pcode flags
_kdz_pred_nrows 32767 Number of rows to predicate at a time in kdzt
_kdz_proj_nrows 1024 Number of rows to project at a time in kdzt
_kdzado_postdm_mode 0 kdzado post dm action mode
_kdzf_columnar_cache default Enable Columnar Flash Cache String Mode
_kdzh_mhcc_min_aligned_chunk 0 Number of bytes for MHCC min aligned chunk to acquire
_kdzk_enable_init_trace FALSE Enable kdzk initialization tracing
_kdzk_load_specialized_library 3 Flags for loading HPK specialized library
_kdzk_specialized_library_name HPK specialized library name
_kdzk_trace_level 0 HPK trace level
_kebm_autotask_cont_resource_schedule FALSE Enable/disable container resource schedule
_kebm_autotask_nstrikes 3 kebm # strikes to auto suspend an autotask
_kebm_max_parallel_autotasks AUTO maximum parallel autotask executions per instance
_kebm_nstrikes 3 kebm # strikes to auto suspend an action
_kebm_preshut_act_enabled TRUE Enable/disable MMON Pre-shutdown Action
_kebm_sanity_check_enabled FALSE Enable/disable MMON Action Sanity Check
_kebm_suspension_time 104400 kebm auto suspension time in seconds
_kecap_cache_size 10240 Workload Replay INTERNAL parameter used to set memory usage in Applic
_keep_19907_during_recovery FALSE keep until scn within recovery target check in recovery
_keep_ac_mutables AUTO Application Continuity mutables keep control
_keep_mutables_automatic TRUE Keep mutables automatic
_keep_relocated_source_pdb FALSE Move source pdb to unplugged state after relocation
_keep_remote_column_size FALSE remote column size does not get modified
_kerberos_debug 0 Enable debug trace for Kerberos
_kerberos_per_pdb TRUE Enable per-PDB Kerberos
_kerberos_service_host service host for Kerberos
_kerberos_service_name service name for Kerberos
_kerberos_unique_cache_name FALSE Enable unique file name for Kerberos Credential Cache file
_kes_parse_model 2 SQL Tune/SPA KES Layer Parse Model control parameter
_keusp_max_num_alloc_buf DEFAULT Maximum number of KEUSP buffers in shared memory
_keusp_stream_batch_size DEFAULT Number of KEUSP buffers to flush in a stream batch
_kewm_simulate_oer4031 0 Simulate OER(4031) for one or more Metric Groups
_kewm_trace_sga FALSE Enable/Disable Metrics SGA Allocation Tracing
_key_vector_alternate_dictionary TRUE enables or disables key vector alternate dictionary generation
_key_vector_create_pushdown_threshold 20000 minimum grouping keys for key vector create pushdown
_key_vector_double_enabled TRUE enables or disables key vector support for binary_double
_key_vector_force_alternate_dictionary FALSE stops key vector alternate dictionary from being disabled
_key_vector_inlist_max_size 10240 maximum inlist key vector size (in KB)
_key_vector_inlist_min_values 0 minimum number of inlist values needed to genterate a key vector
_key_vector_join_pushdown_enabled TRUE enables or disables key vector join push down support
_key_vector_max_size 524288 maximum key vector size (in KB)
_key_vector_offload predicate controls key vector offload to cells
_key_vector_predicate_enabled TRUE enables or disables key vector filter predicate pushdown
_key_vector_predicate_threshold 0 selectivity pct for key vector filter predicate pushdown
_key_vector_shared_dgk_ht TRUE allows shared DGK hash table
_key_vector_timestamp_enabled TRUE enables or disables key vector support for timestamp
_kffmap_hash_size 1024 size of kffmap_hash table
_kffmlk_hash_size 512 size of kffmlk_hash table
_kffmof_fprate 1 acceptable false positive rate [1-10000] of the kffmof bloom filter
_kffmof_size 1048576 number of entries of the kffmof opened files bloom filter
_kffmop_chunks 128 number of chunks of kffmop's
_kffmop_hash_size 2048 size of kffmop_hash table
_kffmop_list_check FALSE enable PGA mop list sanity check
_kffmspw_hash_size 128 size of kffmspw_hash table
_kfi_software_patchmap value of patchmap for software
_kfi_version_patchmap pairs of version:patchmap for testing
_kfm_disable_set_fence FALSE disable set fence calls and revert to default (process fence)
_kgh_free_list_min_effort 12 typical number of free list chunks to visit
_kgh_restricted_subheaps 180 number of subheaps in heap restricted mode
_kgh_restricted_trace 0 trace level for heap dump-restricted mode
_kghdsidx_count 1 max kghdsidx count
_kghdsidx_lp_count 1 number of child latches for large pool and shared with Java pool
_kghdsidx_numa_count 1 number of child latches for NUMA pools
_kghdsidx_sp_count 1 number of child latches for shared pool and shared with Java pool
_kghdsidx_streams_count 1 number of child latches for Streams pool
_kgl_4021_assert_on_oso FALSE Raise soft assert on hitting ORA-4021 for Oracle supplied object
_kgl_assert_x_pin FALSE assert if KGL takes an X-pin on PL/SQL
_kgl_automatic_retry_on_deadlock TRUE disable automatic deadlock retry
_kgl_bucket_bitvector TRUE Enable creation of PDB bit vector in KGL Hash Buckets
_kgl_bucket_bitvector_clear TRUE Enable clearing library cache bucket bit vector
_kgl_bucket_count 9 Library cache hash table bucket count (2^_kgl_bucket_count * 256)
_kgl_bypass_options_load 0 disable loading of options for exceptional situations
_kgl_cluster_lock TRUE Library cache support for cluster lock
_kgl_cluster_lock_read_mostly FALSE Library cache support for cluster lock read mostly optimization
_kgl_cluster_pin TRUE Library cache support for cluster pins
_kgl_debug Library cache debugging
_kgl_final_blocker_kill_begin_time 2 time to wait in minutes before start killing blockers
_kgl_fixed_extents TRUE fixed extent size for library cache memory allocations
_kgl_hash_collision FALSE Library cache name hash collision possible
_kgl_heap_size 4096 extent size for library cache heap 0
_kgl_hot_object_copies 0 Number of copies for the hot object
_kgl_iterator_action SKIP Action to take if we dereference in-flux state in kgl iterator
_kgl_kill_final_blocker FALSE controls feature to kill KGL X lock/pin blockers
_kgl_kqr_cap_so_stacks 0 capture stacks for library and row cache state objects
_kgl_large_heap_assert_threshold 524288000 maximum heap size before KGL raises an internal error
_kgl_large_heap_warning_threshold 52428800 maximum heap size before KGL writes warnings to the alert log
_kgl_latch_count 0 number of library cache latches
_kgl_max_hot_cursors_factor 25 Factor to compute max num of cursors that can be marked hot
_kgl_max_wait_time_during_kill 15 max time to wait to get unblocked while killing blockers
_kgl_min_cached_so_count 1 Minimum cached SO count. If > 1 can help find SO corruptions
_kgl_skip_octcode_dlk_retry 65535 OCTCODEs to skip for deadlock retry
_kgl_time_to_wait_for_locks 15 time to wait for locks and pins before timing out
_kglpgmtx_cap_uol_stack FALSE Capture short stack upon mutex get
_kglsim_maxmem_percent 5 max percentage of shared pool size to be used for KGL advice
_kgrk_configs kgrk additional configurations
_kgsb_threshold_size 16777216 threshold size for base allocator
_kgx_latches 1024 # of mutex latches if CAS is not supported.
_kill_controlfile_enqueue_blocker TRUE enable killing controlfile enqueue blocker on timeout
_kill_diagnostics_timeout 60 timeout delay in seconds before killing enqueue blocker
_kill_enqueue_blocker 2 if greater than 0 enables killing enqueue blocker
_kill_java_threads_on_eoc FALSE Kill Java threads and do sessionspace migration at end of call
_kill_session_alert 5 Kill session to alert log
_kill_session_dump FALSE Process dump on kill session immediate
_kill_session_force FALSE override session kill default to force
_kjac_direct_path_enabled TRUE If direct path is enabled for TG
_kjac_force_outcome_current_session FALSE if TRUE, enable to run force outcome on the current session
_kjac_purge_limit 50000 Max number of LTXID_TRANS rows to delete in one purge cycle
_kjac_purge_timeout 3600 LTXID_TRANS purge scheduler timeout
_kjdd_call_stack_dump_enabled FALSE Enables printing of short call stack with the WFG
_kjdd_wfg_dump_cntrl 0 To control the way Wait-For_Graph is dumped
_kjltmaxgt 1000 record latch requests that takes longer than this many us
_kjltmaxht 1000 record latch reqeust that are held longer than this many us
_kjlton FALSE track DLM latch usage on/off
_kkfi_trace FALSE trace expression substitution
_kkpap_cache_plsql_result TRUE cache result of PL/SQL functions for partition pruning
_kkpap_zm_pruning_cache TRUE cache result of recursive zonemap partition pruning query
_kkpod_flush_validation LOW level of validation during partitioned object metadata flush
_kkpod_load_tolerance FULL level of tolerance during partitioned object metadata load
_kkpogpi_nocpy 1 attempt to avoid partition metadata copy in kkpogpi
_kkporesetdn_multiplier 2 multiplier used when partitions are renumbered
_kkporesetdn_threshold 2100000 threshold for partition renumbering as part of online PMOs
_kks_always_check_bind_equivalence FALSE Check bind equivalence every time
_kks_cached_parse_errors 0 KKS cached parse errors
_kks_debug 0 Shared cursor debugging and diagnostics
_kks_max_open_cursors_dup_limit 5 number of duplicate cursors in open cursors that are acceptable
_kks_obsolete_dump_threshold 1 Number of parent cursor obsoletions before dumping cursor
_kks_open_cursors_dump_summary_threshold 100 size to dump open cursors summary on max open cursors exceeded error
_kks_parse_error_warning 100 Parse error warning
_kks_parse_failure_time_period 3600 Parse failure time period (seconds)
_kks_reuse_ful_child_cursor 3 allow reuse of child cursor marked with FUL flag
_kksauc_cud_eval TRUE check remote mapped cursor referring connected user dblink
_kksfra_cap_stacks FALSE capture stacks for setting kksfra
_kksss_simple_ddl_buf_size 0 size of curent sql statement to be dumped in hang analyse report
_kktAllowInsteadOfDDLTriggeronDDL 0 Oracle internal parameter to allow instead of DDL triggers on specifie
_kktTriggerCaching FALSE enable trigger caching
_kokli_cache_size 128 Size limit of ADT Table Lookup Cache
_kokln_current_read FALSE Make all LOB reads for this session 'current' reads
_kolfuseslf FALSE allow kolf to use slffopen
_kpdb_auto_per_diag_snapshot_interval 50 Interval of snapshots before updating sub-op list
_kpdb_auto_per_diag_subop_max 0 Max number of KPDB sub-op to auto diagnose
_kpdb_log_errors 0 log user errors in v$client_errors
_kpdb_perf_diag_subop_list 0 List of KPDB sub-ops to diagnose
_kpdb_perf_diag_subop_max_exec_time 30 Max allowed time (in sec) for KPDB sub-op to complete
_kqdsn_cpu_digits 3 number of cpu digits in scalable sequence
_kqdsn_instance_digits 2 number of instance digits in scalable sequence
_kql_clientlocks_enabled 15 clients allocating DLM memory
_kql_disable_auto_commit FALSE Disable DDL auto commit in the session
_kql_dump_deptable_in_errorstack TRUE disable dependency info for libcache units
_kql_max_hang_time_for_lck1 180 max allowed time for LCK1 to be tied up in dictionary calls
_kql_subheap_trace 0 tracing level for library cache subheap level pins
_kql_verify_dependency_timestamps 0 verify dependency timestamps
_kqr_enable_conservative_logging TRUE log kgl/kqr objects conservativly in redo
_kqr_hot_copy_sample_size 1000000 number of mutex gets between periodic checks for hot objects
_kqr_hot_copy_sleep_limit 500 threshold of mutex sleeps to enable object hot copies
_kqr_max_hot_copies 16 upper limit of object hot copies allowed
_kqr_optimistic_reads TRUE optimistic reading of row cache objects
_kqr_trace_options 0 kqr Trace Options (Default is all enabled)
_kra_cfile_compaction TRUE controlfile record compation
_kra_obsolete_rule TRUE disable or enable obsolete rule
_kra_trace_buffer_size 131072 size of I/O trace buffer
_krb_check_osd_block_endianess TRUE Check OSD Block Endianess
_krb_trace_buffer_size 131072 size of per-process I/O trace buffer
_krbabr_trace_buffer_size 131072 size of I/O trace buffer
_krc_trace_buffer_size 131072 size of I/O trace buffer
_ksb_restart_clean_time 30000 process uptime for restarts
_ksb_restart_policy_times 0, 60, 120, 240 process restart policy times in seconds
_ksd_test_param 999 KSD test parmeter
_ksdx_charset_ratio 0 ratio between the system and oradebug character set
_ksdxdocmd_default_timeout_ms 30000 default timeout for internal oradebug commands
_ksdxdocmd_enabled TRUE if TRUE ksdxdocmd* invocations are enabled
_ksdxw_cini_flg 0 ksdxw context initialization flag
_ksdxw_nbufs 1000 ksdxw number of buffers in buffered mode
_ksdxw_num_pgw 10 number of watchpoints on a per-process basis
_ksdxw_num_sgw 10 number of watchpoints to be shared by all processes
_ksdxw_stack_depth 4 number of PCs to collect in the stack when watchpoint is hit
_ksdxw_stack_readable FALSE dump readable stack when watchpoint is hit
_kse_alt_stack_sig_syms 25 The number of top symbols used for the alternate stack signature
_kse_auto_core FALSE generate core for unexpected SIGSEGV/SIGBUS
_kse_die_timeout 60000 amount of time a dying process is spared by PMON (in centi-secs)
_kse_pc_table_size 256 kse pc table cache size
_kse_signature_entries 0 number of entries in the kse stack signature cache
_kse_signature_limit 7 number of stack frames to cache per kse signature
_kse_snap_ring_disable FALSE set to TRUE or FALSE to disable or enable error logging
_kse_snap_ring_record_min minimize recorded information in error stack history
_kse_snap_ring_record_stack FALSE should error snap ring entries show a short stack trace
_kse_snap_ring_size 100 ring buffer to debug internal error 17090
_kse_snap_ring_suppress 942 1403 List of error numbers to suppress in the snap error history
_kse_ssnt FALSE disables symbol translation in short stacks to make them faster
_kse_trace_int_msg_clear FALSE enables soft assert of KGECLEAERERROR is cleares an interrupt message
_ksfd_fob_pct 0 percentage of FOB state objects allocation
_ksfd_verify_write FALSE verify asynchronous writes issued through ksfd
_ksfdx_tests ksfdx testing - INTERNAL USE ONLY!
_ksfq_combine_cont_write_percentage 80 combine contiguous write capability percentage
_ksfqp_row_count 0 row count of x$ksfqp
_ksgl_ltchs_held_ctxt 8 Average number of latches held per KSGL context
_ksgl_max_dyn_latches 1024 Maximum number of KSGL dynamic latches
_ksi_clientlocks_enabled TRUE if TRUE, DLM-clients can provide the lock memory
_ksi_disable_sopt TRUE if TRUE (default), disable s-optimization for specific row caches
_ksi_pdb_checks TRUE if TRUE (default), do consistency checks on PDB IDs
_ksi_trace KSI trace string of lock type(s)
_ksi_trace_bucket SHARED memory tracing: use ksi-private or rdbms-shared bucket
_ksi_trace_bucket_size LCK1:1048576-REST:81 KSI trace bucket size in bytes (format: "LCK1:<n>-REST:<m>")
92
_ksim_group_ops_req_async_mode auto ksim group membership async op mode
_ksim_group_ops_req_async_procsz 10 ksim group async req batch processing size
_ksim_group_ops_req_async_procsz_dyn_adjustment TRUE ksim group async req processing sz dynamic adjustment
_ksim_group_ops_req_opmode async ksim group join/leave op mode
_ksim_time_monitor auto ksim layer time dynamic monitor and statistics
_ksipc_aspc_enabled FALSE is KSIPC Address Space Support Enabled
_ksipc_cksum_level Configure IPC Checksum level for clients on a per transport basis
_ksipc_common_sl Configure a single SL value for all client/transport combinations
_ksipc_ctrl_threshold_cnt Configure IPC Control Threshold Count Value for clients on a per trans
_ksipc_ctrl_threshold_ms Configure IPC Control Threshold Time (ms) Value for clients on a per t
_ksipc_efchecks 3 Check HCA/OS version for Exafusion
_ksipc_group_sz 1024 Configure KSIPC group size
_ksipc_heap_extent 1048576 KSIPC Heap Extent Size
_ksipc_ipclw_cksum_enable 0 Configure IPCLW cksum
_ksipc_ipclw_conn_dump 0 Configure IPCLW connection dump rate
_ksipc_ipclw_enable_param ipclw parameter enablement
_ksipc_ipclw_library_path over-ride default location of lib ipclw
_ksipc_ipclw_network_diag_ms 0 Configure IPCLW SEND TIMER (in MS)
_ksipc_ipclw_rcvbuf_mb 0 Configure IPCLW RCVBUF SIZE (in MB)
_ksipc_ipclw_spare_param3 ksipc ipclw spare parameter 3
_ksipc_ipclw_spare_param4 ksipc ipclw spare parameter 4
_ksipc_ipclw_spare_param5 ksipc ipclw spare parameter 5
_ksipc_ipclw_spare_param6 ksipc ipclw spare parameter 6
_ksipc_ipclw_spare_param7 ksipc ipclw spare parameter 7
_ksipc_ipclw_spare_param8 ksipc ipclw spare parameter 8
_ksipc_ipclw_wait_diag_ms 0 Configure IPCLW WAIT DIAG TIME (in MS)
_ksipc_ipclw_xrc_conn_diag 0 ksipc xrc transport connection diagnostics
_ksipc_ipclw_xrc_pflags 0 ksipc xrc transport pflags
_ksipc_libipc_path over-ride default location of libipc
_ksipc_loopback_ips KSIPC Loopback IP addresses
_ksipc_mga_segment_size 268435456 KSIPC MGA Segment Size
_ksipc_mode 0 ksipc mode
_ksipc_netintr_timeout ipq.KSMSQ_UDP_TRANS= Specify the timeout for queueing network interrupt to a processon a pe
30
_ksipc_rds_delay_ms 1000 Time(in ms) to wait for rds socket send buffers to be flushed
_ksipc_service_level Configure service level for clients on a per transport basis
_ksipc_service_mask 1 KSIPC Service Mask
_ksipc_skgxp_compat_library_path over-ride default location of lib skgxp compat
_ksipc_skgxp_library_path over-ride default location of lib skgxp
_ksipc_spare_param1 0 ksipc spare param 1
_ksipc_spare_param2 ksipc spare param 2
_ksipc_spare_param3 0 ksipc spare param 3
_ksipc_spare_param4 0 ksipc spare param 4
_ksipc_spare_param5 0 ksipc spare param 5
_ksipc_vnic_attach_limit 512 KSIPC VNIC attach limit
_ksipc_wait_flags 0 tune ksipcwait
_ksipc_window_size Configure IPC Windowing Value for clients on a per transport basis
_ksipclnt_ep_mode 0 KSIPC EP MODE
_ksipcsnsrv Configure Shared Nothing Server Name
_ksm_post_sga_init_notif_delay_secs 0 seconds to delay instance startup at sga initialization (post)
_ksm_pre_sga_init_notif_delay_secs 0 seconds to delay instance startup at sga initialization (pre)
_ksm_shared_pool_stats_minsz 524288 min value for printing stats
_ksm_shared_pool_stats_num_pdb 8 number of pdbs to dump shared pool info for
_ksm_sp_rcr_hits 10 hits to make object recurrent
_ksmb_debug 0 ksmb debug flags
_ksmd_protect_mode off KSMD protect mode for catching stale access
_ksmd_trace 0 ksmd tracing
_ksmg_granule_size 16777216 granule size in bytes
_ksmlsaf 0 KSM log alloc and free
_ksmsq_conn_per_epoch 0 KSMSQ Connections Per Epoch
_ksmsq_hintmaxinst 1024 KSMSQ Hint Max Instances
_ksmsq_hintmaxproc 320 KSMSQ Hint Max Processes
_ksnmon_int_param_1 4 KSNMON integer param 1
_ksnmon_int_param_2 0 KSNMON spare integer param 2
_ksnmon_int_param_3 0 KSNMON spare integer param 3
_ksnmon_int_param_4 0 KSNMON spare integer param 4
_ksnmon_int_param_5 0 KSNMON spare integer param 5
_ksnmon_int_param_6 0 KSNMON spare integer param 6
_ksnmon_max_flow 65535 KSNMON max number of flows monitored
_ksnmon_min_stats_interval_ms 5000 KSNMON min stats report interval in ms
_ksnmon_service_enable_bitmask 2147483647 KSNMON service enable (a bit per service)
_ksnmon_str_param_1 KSNMON spare string param 1
_ksnmon_str_param_2 KSNMON spare string param 2
_kspmx_enabled FALSE KSPMX Is Enabled
_kspmxs_flush_cache_size 1 KSPMXS flush cache size
_kspmxs_latch_freelists 2 Number of managed PMEM latch freelists
_kspmxs_latch_usid_map_size 256 KSPMXS latch usid map size
_kspmxs_max_regions 64 KSPMXS max regions
_kspmxs_max_waits 4 KSPMXS max waits
_kspmxs_txn_freelists 32 Number of PMEM transactions freelists
_kspmxs_upgrade_mutexes 64 KSPMXS upgrade mutex
_kspmxs_usid_map_size 1024 KSPMXS usid map size
_kspmxs_wait_buckets 1024 KSPMXS wait buckets
_kspol_tac_timeout 5 timeouts for TAC registerd by kspol
_ksr_control_dyn_flags 0 KSR dyanamic control flags
_ksr_control_flags 0 KSR control flags
_ksr_unit_test_processes 0 number of ksr unit test processes
_ksrk_dedicated_io_threads_pct 50 percentage of total io threads dedicated for PDBs
_ksrk_max_io_threads_pct 40 percentage of total "processes" the PubSub sub system can use as its i
_ksrk_pdbmax_io_thread_pct 100 Maximum number of IO threads a PDB can use
_ksrk_pga_limit_pct 40 percentage of total PGA that can be used by the bridge
_ksrk_pga_reclaim_pct 50 PGA usage threshold at which bridge starts reclaiming free extents fro
_ksrk_sga_limit_pct 10 percentage of total SGA that can be used by KSRK
_ksrma_enabled AUTO turn ksrma off, make it automatic, or turn on CMI or KSMSQ provider. D
_ksrma_gsm_base_addr Base Address to use for GSM
_kss_callstack_type state object callstack trace type
_kss_quiet TRUE if TRUE access violations during kss dumps are not recorded
_kstrc_archiver disk://localhost KSTRC Backend archiver
_kstrc_bucket_max_size 2097152 Configure the max size of the trace bucket for each KSTRC Operation
_kstrc_max_operations 4096 Configure total max number of KSTRC operations available/in use
_kstrc_service_mask 0 KSTRC Service Mask
_ksu_diag_kill_time 5 number of seconds ksuitm waits before killing diag
_ksu_proc_percent_target 50 dynamic process usage target
_ksu_proc_percent_threshold 70 dynamic process usage threshold
_ksuitm_addon_trccmd command to execute when dead processes don't go away
_ksuitm_dont_kill_dumper FALSE delay inst. termination to allow processes to dump
_ksv_dynamic_flags1 0 ksv dynamic flags 1 - override default behavior
_ksv_max_spawn_fail_limit 5 bg slave spawn failure limit
_ksv_pool_hang_kill_to 0 bg slave pool terminate timeout
_ksv_pool_wait_timeout 600 bg slave pool wait limit
_ksv_slave_exit_timeout 120 slave exit timeout
_ksv_spawn_control_all FALSE control all spawning of background slaves
_ksv_static_flags1 0 ksv static flags 1 - override default behavior
_ksvppktmode 0 ksv internal pkt test
_ksws_alb_block_service FALSE enable ALB Blocking of overloaded service
_ksws_alb_session_age 120 KSWS ALB Minimum age(seconds) of session to consider marking
_ksws_alb_suspend_duration 300 KSWS ALB Suspend Duration Time
_ksws_alb_test_delta_override 0 KSWS ALB total sessions after which service is blocked
_ksws_alb_test_drain_timeout 300 KSWS ALB time in seconds before draining kicks in
_ksws_alb_test_load_balance_frequency 300 KSWS ALB Load Balance Frequency in deci seconds
_ksws_alb_test_load_percent 106 KSWS ALB Load Percentage to trigger marking for draining
_ksws_alb_test_selection_bias 100 KSWS ALB percentage of sessions to target
_ksws_child_service_override FALSE KSWS child service override
_ksws_clb_storm_count 15 KSWS CLB Goodness Changes Counter to trigger posting
_ksws_clb_storm_interval 500 KSWS CLB posting Interval to Listener
_ksws_coloc_control 1 KSWS Colocation control parameter
_ksws_enable_alb TRUE enable ALB metrics processing
_ksws_enable_goodness_for_singleton_primary_with_t TRUE enable goodness for singleton primary with true cache service
c_service
_ksws_fallback_to_root FALSE KSWS Fallback to Root CDB service
_ksws_goodness_control 1 KSWS Goodness Control to Manually override
_ksws_java_patching 0 java patching mode
_ksws_live_migration 1 KSWS Live Migration Feature Control
_ksws_lm_drain TRUE KSWS Live Migration Drain Allowed
_ksws_lm_interval 100 KSWS Live Migration Process Cycle Interval
_ksws_lm_max_time 6000 KSWS Live Migration Max Time To Trigger end
_ksws_modsvc_call_out_enabled TRUE modify service call out enabled
_ksws_perf_control 29 KSWS Performance control parameter
_ksws_perf_tracing 0 KSWS Performance Diagnostics and Monitoring
_ksws_rlb_cpu_busy_scope TRUE KSWS RLB CPU BUSY SCOPE
_ksws_smart 29 KSWS Smart Feature Control
_ksws_smart_clswtime_dbtime_perc_thresh 70 SMART cluster wait time : db time percentage threshold
_ksws_smart_frequency 900 KSWS Smart Publishing Frequency in deci seconds
_ksws_smart_gcwtime_clswtime_perc_thresh 90 SMART gc contention wait time : cluster wait time percentage threshold
_ksws_use_placement_template_attribute FALSE use placement_template attribute
_kswsas_close_pdb_on_lstsvc TRUE Close a PDB when the last user service is stopped
_kswsas_db_svc_mapping Map db service name to different service
_kswsas_drain_kill_batch_size 5 Batch size for killing non-drained sessions
_kswsas_ht_log_size 7 kswsas_ht_log_size
_kswsas_num_jp_slaves 0 Number of slaves for java patching
_kswsas_pdb_auto_close_timeout 600 Close a PDB after the timeout
_ksxp_allow_ksxr_rolling_migration TRUE Allow KSXR operations during rolling migration
_ksxp_compat_flags 0 ksxp compat flags
_ksxp_control_flags 0 modify ksxp behavior
_ksxp_diagmode OFF set to OFF to disable automatic slowsend diagnostics
_ksxp_disable_clss 0 disable CLSS interconnects
_ksxp_disable_dynamic_loading FALSE disable dynamic loadin of lib skgxp
_ksxp_disable_ipc_stats FALSE disable ipc statistics
_ksxp_dump_timeout 20 set timeout for kjzddmp request
_ksxp_dynamic_skgxp_param dynamic skgxp parameters
_ksxp_exa_ip_config 0 ksxp exa ip config
_ksxp_if_config 0 ksxp if config flags
_ksxp_init_stats_bkts 0 initial number arrays for ipc statistics
_ksxp_ipclw_enabled 1 enable ipclw for KSXP
_ksxp_ipclw_ptswinsz 8 KSXP port conn send window
_ksxp_ksmsq_ip_config 0 ksxp ksmsq ip config
_ksxp_lw_post_flags 0 tune ksxp post (lw)
_ksxp_max_stats_bkts 0 max. arrays for ipc statistics
_ksxp_ping_enable TRUE disable dynamic loadin of lib skgxp
_ksxp_ping_polling_time 0 max. arrays for ipc statistics
_ksxp_poll_netintr_timeout 3600 ksxp poll network interrupt timeout in seconds
_ksxp_reaping 50 tune ksxp layer reaping limit
_ksxp_reporting_process LMD0 reporting process for KSXP
_ksxp_save_sockets 0 Limit foreground process's sockets
_ksxp_save_sockets_pattern * Process pattern on which sockets saving is active
_ksxp_send_timeout 300 set timeout for sends queued with the inter-instance IPC
_ksxp_skgxp_ant_options SKGXP ANT options
_ksxp_skgxp_ctx_flags1 0 IPC debug options flags (RAC)
_ksxp_skgxp_ctx_flags1mask 0 IPC debug options flags mask (RAC)
_ksxp_skgxp_dynamic_protocol 4096 IPC protocol override (RAC) (0/-1=*,2=UDP,3=RDS,!0x1000=ipc_X)
_ksxp_skgxp_inets limit SKGXP networks
_ksxp_skgxp_rgn_ports 0 region socket limits (0xFFFFNNXX): F=flags, N=min, X=max
_ksxp_skgxp_spare_param1 ipc ksxp spare parameter 1
_ksxp_skgxp_spare_param2 ipc ksxp spare parameter 2
_ksxp_skgxp_spare_param3 ipc ksxp spare parameter 3
_ksxp_skgxp_spare_param4 ipc ksxp spare parameter 4
_ksxp_skgxpg_last_parameter 27 last defined skgxpg parameter - ksxp
_ksxp_spare_param1 KSXP Spare Parameter 1
_ksxp_stats_mem_lmt 0 limit ipc statistics memory. this parameter is a percentage value
_ksxp_testing 0 KSXP test parameter
_ksxp_unit_test_byte_transformation FALSE enable byte transformation unit test
_ksxp_validate_cnh_life_cycle 0 enable validation of ksxp connection life cycle
_ksxp_wait_flags 0 tune ksxpwait
_ksz_dummy_parameter Internal spare parameter for ksz.c
_ksz_dummy_parameter2 Internal spare parameter2 for ksz.c
_ksz_fake_mga_check_range 10 ksz fake mga status check random range
_ksz_fake_mga_mode FALSE enable ksz fake MGA mode
_ktb_debug_flags 8 ktb-layer debug flags
_ktc_debug 0 for ktc debug
_ktc_latches 0 number of ktc latches
_ktf_copy_mapping_freq HIGH Frequency of copy mappings to each pdb
_ktilm_min_num_dml_trckrs_to_flush_each_flush 100 Min Num of Trackers to Flush in every Flush
_ktilm_min_time_sec_bfr_dml_stat_flush 300 Minimum Time in sec to Wait Before DML STAT FLUSH
_ktilm_pct_of_dml_trckrs_to_flush_each_flush 25 PCT Of Trackers to Flush in every Flush Attempt
_ktilm_uga_off FALSE Disable KTILM UGA cache activity tracking
_ktilmsc_exp 600 expiration time of ktilm segment cache (in second)
_kts_dbg 0 KTS Generic Debug
_ktsl_dbg 0 Debug Securefile space layer features
_ktslj_segext_max_mb 0 segment pre-extension max size in MB (0: unlimited)
_ktslj_segext_retry 5 segment pre-extension retry
_ktslj_segext_warning 10 segment pre-extension warning threshold in percentage
_ktslj_segext_warning_mb 0 segment pre-extension warning threshold in MB
_ktsls_autoshrink_seg_idle_seconds 86400 automatic securefile shrink segment idle seconds
_ktsls_autoshrink_seg_pen_seconds 86400 automatic securefile shrink segment penalty seconds
_ktsls_autoshrink_trickle_mb 1024 automatic securefile shrink trickle mb
_ktspsrch_maxsc 1024 maximum segments supported by space search cache
_ktspsrch_maxskip 5 space search cache rejection skip upper limit
_ktspsrch_scchk 60 cleanout check time of space search cache
_ktspsrch_scexp 60 expiration time of space search cache
_ktst_dbg 0 Kernel Transaction Temporary Sort management Debug
_ktst_rss_max 1000 maximum temp extents to be released across instance
_ktst_rss_min 100 minimum temp extents to be released across instance
_ktst_rss_retry 5 maximum retries of sort segment release
_ktt_tsid_reuse_threshold 60000 tablespace id reuse threshold
_ktte_ts_shrink_group 6 tablespace shrink group
_ktte_ts_shrink_interval 3600 tablespace shrink interval
_kttets_ignore_free_space FALSE Should x$kttets ignore storage free space for max
_kttext_warning 1285 tablespace pre-extension and shrink warning threshold in percentage
_ktu_latches 0 number of KTU latches
_ku_trace none datapump trace parameter
_kxdbio_ctx_init_count 32 initial count of KXDBIO state object
_kxdbio_disable_offload_opcode 0 KXDBIO Disable offload for the set opcodes. Value is a Bitmap of 0
_kxdbio_enable_ds_opcode 0 KXDBIO Enable Dumb storage simulation for the set opcodes.
_kxdbio_hca_loadavg_thresh 74 HCA loadavg threshold at which writes need to get offloaded
_kxdbio_offena_timeout 7200000 kxdbio re-enable offloaded write timeout
_kxdbio_ut_ctl 0 kxdbio unit test controls
_kxfp_flood_control_period 3600 time period within which we control the flood of the root error of ORA
_kxfp_flood_control_times 5 number of times allowed to post the root error of ORA-12801 into the l
_kxs_library_cache_stats TRUE Library cache statistics for shared cursors
_kxscio_cap_stacks FALSE capture location when kxscio is set to null
_large_pool_min_alloc 65536 minimum allocation size in bytes for the large allocation pool
_largepage_retry_max_count 3 Maximum number of retries for largepage allocation
_last_allocation_period 5 period over which an instance can retain an active level1 bitmap
_latch_class_0 latch class 0
_latch_class_1 latch class 1
_latch_class_2 latch class 2
_latch_class_3 latch class 3
_latch_class_4 latch class 4
_latch_class_5 latch class 5
_latch_class_6 latch class 6
_latch_class_7 latch class 7
_latch_classes latch classes override
_latch_miss_stat_sid 0 Sid of process for which to collect latch stats
_latch_pause_count 0 Latch pause count
_latch_pause_mode static Latch pause mode
_latch_wait_list_pri_sleep_secs 1 Time to sleep on latch wait list until getting priority
_lazy_mount_nfs FALSE Mount NFS lazily
_ldap_adaptive_to_no_nested_group_search TRUE LDAP adaptive to no nested group search
_ldap_config_force_sync_up FALSE LDAP configure force sync up
_ldap_config_ssl_for_sasl_md5 TRUE LDAP configure SSL for SASL-DIGEST-MD5
_ldap_no_nested_group_search FALSE LDAP no nested group search
_ldap_password_oneway_auth FALSE Use oneway auth for password based LDAP directory bind
_ldap_reset_user_account_flc TRUE LDAP reset user account lockout counter
_ldap_use_all_direct_groups_only TRUE LDAP use all direct groups only
_ldap_warning_on_multi_shared_mappings FALSE LDAP warning on multiple shared mappings
_ldr_io_size 1048576 size of write IOs used during a load operation
_ldr_pga_lim 0 pga limit, beyond which new partition loads are delayed
_ldr_pga_proc_lim 0 pga proc limit, beyond which new partition loads are delayed
_ldr_tempseg_threshold 8388608 amount to buffer prior to allocating temp segment (extent sizing)
_leader_pdb FALSE enable leader PDB functionality
_leader_pdb_guid GUID of Leader PDB
_leader_pdb_guid_int_app FALSE Use leader PDB GUID in internal application name
_left_nested_loops_random TRUE enable random distribution method for left of nestedloops
_lgwr_delay_slave_write FALSE Enable LGnn write delay for testing
_lgwr_delay_write FALSE Enable LGWR write delay for testing
_lgwr_delay_write_csec 300 If LGWR write delays are enabled, delay each write by this amount
_lgwr_delay_write_interval 10 If LGWR write delays are enabled, delay every Nth write
_lgwr_io_outlier 0 LGWR I/O outlier frequency
_lgwr_io_slaves 0 LGWR I/O slaves
_lgwr_max_ns_wt 1 Maximum wait time for lgwr to allow NetServer to progress
_lgwr_ns_nl_max 1000 Variable to simulate network latency or buffer threshold
_lgwr_ns_nl_min 500 Variable to simulate network latency or buffer threshold
_lgwr_ns_sim_err 0 Variable to simulate errors lgwrns
_lgwr_posts_for_pending_bcasts FALSE LGWR posts commit waiters for pending broadcasts
_lgwr_ta_sim_err 0 Variable to simulate errors lgwr true async
_lgwr_thick_mode_config 1:2:1536:8192:1500 adaptive overlapped writes thick mode configuration
_lgwr_thin_mode_config 1:256:256:100:750 adaptive overlapped writes thin mode configuration
_library_cache_advice TRUE whether KGL advice should be turned on
_library_cache_dump_cooling_period 10 Period to wait (in minutes) before resetting dump count
_library_cache_dump_interval 0 Interval (in seconds) between each dump
_light_work_rule_debug FALSE if TRUE, light work rule debugging is enabled
_lightweight_hdrs TRUE Lightweight headers for redo
_like_with_bind_as_equality FALSE treat LIKE predicate with bind as an equality predicate
_link_to_leader_pdb database link to Leader PDB
_link_ts_force_online TRUE force linked tablespace to be online
_link_ts_name Name of linked tablespace
_listener_registration_retry_secs 60 listener registration retry time (in seconds)
_lm_activate_lms_threshold 100 threshold value to activate an additional lms
_lm_adrm_interval 300 active drm interval in centiseconds
_lm_adrm_options 3 active drm options
_lm_adrm_scan_timeout 50 active drm f2a/flush scan timeout in centisecs
_lm_adrm_time_out 120 active drm timeout in minutes
_lm_asm_enq_hashing TRUE if TRUE makes ASM use enqueue master hashing for fusion locks
_lm_async_da FALSE enable async da requests
_lm_async_pdb_open 0 if TRUE enables asynchronous pdb open in DLM
_lm_batch_compression_threshold 0 GES threshold to start compression on batch messages
_lm_better_ddvictim TRUE GES better deadlock victim
_lm_big_cluster_optimizations TRUE enable certain big cluster optimizations in drm
_lm_broadcast_res enable_broadcast Enable broadcast of highest held mode of resource.
_lm_cache_allocated_res_ratio 50 ratio of cached over allocated resources
_lm_cache_enqueue string of enqueues to cache at the client: separate by |, use DECIMAL
_lm_cache_lvl0_cleanup 0 how often to cleanup level 0 cache res (in sec)
_lm_cache_res_cleanup 25 percentage of cached resources should be cleanup
_lm_cache_res_cleanup_tries 10 max number of batches of cached resources to free per cleanup
_lm_cache_res_options 0 ges resource cache options
_lm_cache_res_skip_cleanup 20 multiple of iniital res cache below which cleanup is skipped
_lm_cache_res_type TMHWDI cache resource: string of lock types(s)
_lm_check_ges_resource 0 GES: additional checks during resource allocation (0|1|2|3)
_lm_checksum_batch_msg 0 GES checksum batch messages
_lm_chk_inv_domenq_ops TRUE enable checks for invalid enqueue operations on domains
_lm_comm_batch_size_option 2 KJC maximum batch size option
_lm_comm_channel msgq GES communication channel type
_lm_comm_direct_return_free_multiple 2 GES Direct Return Free queue multiple
_lm_comm_direct_return_hwm_add 60 GES SO High Water Mark additional buffers
_lm_comm_direct_return_mp_enable TRUE GES Direct Return to DLM mp enable
_lm_comm_direct_return_retnq_trigger 1000 GES Direct Return Queue Size Trigger
_lm_comm_ipclw_connect_trigger 75 GES communication ipclw connect trigger in ms
_lm_comm_ipclw_wait_enable 150 GES communication ipclw wait enable in ms
_lm_comm_ipclw_wait_trigger 100 GES communication ipclw wait trigger in ms
_lm_comm_monitor_pending_sends 0 Pending sends monitoring
_lm_comm_msgq_bufr_multiple 8 MSGQ_DRMQ multiple for maximum buffers
_lm_comm_msgq_busywait 0 busy wait time in microsecond for msgq
_lm_comm_msgq_copy_buffers FALSE MSGQ_DRMQ copy msgs to new buffer
_lm_comm_msgq_fixed_buffers FALSE MSGQ with fixed number of receive buffers
_lm_comm_rcv_msg_history_slots 50 GES communication receive message history slots
_lm_comm_reap_count 1 message reap count for receive
_lm_comm_receive_buffer_multiple 2 Additional receive buffer multiple
_lm_comm_send_proxy_bufr_return_mode 1 Send proxy buffer return mode
_lm_comm_send_proxy_nr_delay 10 Send proxy delay before sending NULLREQ
_lm_comm_send_proxy_send_comp_wait 100 Send proxy wait on send completion
_lm_comm_send_proxy_send_wait 50 Send proxy wait per sends
_lm_comm_send_proxy_tkt_return TRUE Allow send proxy to return tickets
_lm_comm_send_trace_trigger 500 GES communication send trace trigger in ms
_lm_comm_slow_op_loop_threshold 15 GES communication slow operation loop threshold in ms
_lm_comm_slow_op_spx_loop_threshold 30000 GES comm slow spx operation loop threshold in microsec
_lm_comm_slow_op_stat_dump_threshold 5 GES communication slow operation stat dump threshold in sec
_lm_comm_sync_seq_on_send_failure TRUE GES communication sync seq for failed sends after reconfig
_lm_comm_tkts_adaptive TRUE Adpative ticketing enabled
_lm_comm_tkts_adpt_rsv 1 Adpative ticketing reserve multiple
_lm_comm_tkts_calc_period_length 100000 Weighted average calculation interval length (us)
_lm_comm_tkts_max_add 5 Ticket allocation maximum allotments
_lm_comm_tkts_max_periods 10 Max number of periods used in weighted avearage calculation
_lm_comm_tkts_min_decrease_wait 120 Seconds to wait before allowing an allocation decrease
_lm_comm_tkts_min_increase_wait 10 Seconds to wait before allowing an allocation increase
_lm_comm_tkts_mult_factor 1 Ticket allocation multiplication factor
_lm_comm_tkts_nullreq_threshold 1 Null request threshold
_lm_comm_tkts_sub_factor 10 Ticket allocation subtraction factor
_lm_comm_wait_diag_trigger 30 GES communication wait diag trigger in ms
_lm_compression_scheme zlib GES compression scheme
_lm_contiguous_res_count 128 number of contiguous blocks that will hash to the same HV bucket
_lm_da_win_enable TRUE enable da windowing
_lm_da_window 1 number of windows in domain action
_lm_da_window_interval 0 Interval in centiseconds between each domain action window
_lm_db_rank 6 rank of this DB for process priority purposes
_lm_db_ranks ranks of DBs on this node
_lm_dd_ignore_nodd FALSE if TRUE nodeadlockwait/nodeadlockblock options are ignored
_lm_dd_interval 10 dd time interval in seconds
_lm_dd_max_search_time 180 max dd search time per token
_lm_dd_maxdump 50 max number of locks to be dumped during dd validation
_lm_dd_scan_interval 5 dd scan interval in seconds
_lm_dd_search_cnt 3 number of dd search per token get
_lm_default_failure_action 0 default failure action
_lm_deferred_msg_timeout 163 deferred message timeout
_lm_domain_hash_buckets 64 number of buckets for the domains hash table
_lm_drm_banned_objs list of objects not allowed to do drm
_lm_drm_batch_time 10 time in seconds to wait to batch drm requests
_lm_drm_disable 0 disable drm in different level
_lm_drm_disable_kjfc FALSE disable drm at kjfc level
_lm_drm_duration_limit 60 set drm object duration limit (secs time/object size)
_lm_drm_duration_limit_type 1 drm object time limit type (time/size)
_lm_drm_filter_history_window 60 drm filter history window
_lm_drm_filter_history_window_type 1 drm object time limit type (time/size)
_lm_drm_filters 7 enable drm filters
_lm_drm_hiload_percentage 200 drm high load threshold percentage
_lm_drm_lowload_percentage 200 drm low load threshold percentage
_lm_drm_max_banned_objs 10 maximum number of objects not allowed to do drm
_lm_drm_max_requests 100 dynamic remastering maximum affinity requests processed together
_lm_drm_min_interval 600 minimum interval in secs between two consecutive drms
_lm_drm_object_scan TRUE enable/disable object scan to force full table scan always
_lm_drm_pdb_on TRUE only pdb members participate in DRM
_lm_drm_test_duration_limit 5 set drm test duration limit (secs time/object size)
_lm_drm_we_interval 60 drm wait events collection interval in seconds
_lm_drm_we_size 2000 size of drm wait events statistics
_lm_drm_window 0 dynamic remastering bucket window size
_lm_drm_xlatch 0 dynamic remastering forced exclusive latches
_lm_drmopt12 184 enable drm scan optimizations in 12
_lm_dump_null_lock FALSE dump null lock in state dump
_lm_dynamic_lms FALSE dynamic lms invocation
_lm_dynamic_load TRUE dynamic load adjustment
_lm_dynamic_sga_target dynamically adjust for changes in SGA size
_lm_enable_aff_benefit_stats FALSE enables affinity benefit computations if TRUE
_lm_enable_pdb_abort 1 enable pdb abort as default failure action
_lm_enable_translation FALSE tells if KJURN_PDBID should translate using kpdb calls
_lm_enq_iso_enabled TRUE if TRUE enables enqueue isolation
_lm_enq_lock_freelist Number of ges enqueue element freelist
_lm_enq_rcfg TRUE if TRUE enables enqueue reconfiguration
_lm_enqueue_blocker_dump_timeout 120 enqueue blocker dump timeout
_lm_enqueue_blocker_dump_timeout_cnt 30 enqueue blocker dump timeout count
_lm_enqueue_blocker_kill_timeout 0 enqueue blocker kill timeout
_lm_enqueue_freelist 3 Number of enqueue freelist
_lm_enqueue_timeout 360 enqueue suggested min timeout in seconds
_lm_exadata_fence_type TRUE if FALSE disable Exadata fence type
_lm_fdrm_stats FALSE gather full drm statistics
_lm_file_affinity mapping between file id and master instance number
_lm_file_read_mostly mapping between read-mostly file id and master instance number
_lm_free_queue_threshold 0 GES free queue threshold
_lm_freeze_kill_time 30 timeout for killing unfrozen processes in rcfg/drm freeze step
_lm_gcs_rht_alloc_size 4096 gcs rht allocation chunk size
_lm_ges_rht_alloc_size 4096 ges rht allocation chunk size
_lm_ges_rht_mem_pct 15 options to size RHT structures per pdb
_lm_gl_hash_scheme 1 group lock table hashing scheme (0|1|2)
_lm_global_posts TRUE if TRUE deliver global posts to remote nodes
_lm_hash_control 5 bit field controlling the hashing behavior of the lock manager
_lm_hashtable_bkt_high 5 High element threshold in hash table bucket
_lm_hashtable_bkt_low 3 Low element threshold in hash table bucket
_lm_hashtable_bkt_thr 70 Threshold for hash table resizing
_lm_hb_acceptable_hang_condition default list of acceptable hang conditions in heartbeat check
_lm_hb_callstack_collect_time 5 hb diagnostic call stack collection time in seconds
_lm_hb_callstack_collect_time_long 60 extended hb diagnostic call stack collection time in seconds
_lm_hb_cfio_timeout 70 control file io timeout in seconds
_lm_hb_disable_check_list ARC* list of process names to be disabled in heartbeat check
_lm_hb_enable_acl_check TRUE to enable the wait analysis with acceptable condition lists
_lm_hb_exponential_hang_time_factor 2 heartbeat exponential hang time multiplier
_lm_hb_lgio_timeout 70 LGWR io timeout in seconds
_lm_hb_maximum_hang_report_count 20 maximum heartbeat hang report count
_lm_hb_per_proc_behavior default heartbeat behavior
_lm_hb_per_proc_timeout default heartbeat timeout
_lm_hb_timeout_extension heartbeat timeout extension in seconds
_lm_high_load_sysload_percentage 90 high watermark system load percentage
_lm_high_load_threshold 5 high load threshold parameter
_lm_hist_bucket_trigger 500 LM trigger to produce trace bucket dump in ms
_lm_hist_dump_trigger 100 LM trigger to produce diagnostic in ms
_lm_hist_opcode_trigger 0 LM opcode to produce trace bucket dump
_lm_hvenqid4_opt 1 pass setmaster in id4 of HV enqueue name
_lm_hwc_disabled FALSE to disable handle with care behavior
_lm_idle_connection_action kill GES idle connection action
_lm_idle_connection_check TRUE GES idle connection check
_lm_idle_connection_check_interval 140 GES idle connection check interval time
_lm_idle_connection_instance_check_callout TRUE GES idle connection instance check callout
_lm_idle_connection_kill TRUE GES idle connection kill
_lm_idle_connection_kill_max_skips 1 GES idle connection max skip kill request
_lm_idle_connection_load_check TRUE GES idle connection load check
_lm_idle_connection_max_ignore_kill_count 2 GES maximum idle connection kill request ignore count
_lm_idle_connection_quorum_threshold 50 GES idle connection health quorum threshold
_lm_inherited_max_requests 100 maximum inherited affinity dissolve requests processed together
_lm_kill_fg_on_timeout TRUE GES kill fg on IPC timeout
_lm_killproc_timeout 120 lazy domain killproc timeout in seconds
_lm_kjbdomlzdomscn_interval 1 kjbdomlzdomscn() interval time in seconds
_lm_lazy_domain_timeout 600 lazy domain timeout in seconds
_lm_lazy_recovery_member_timeout 300 lazy recovery member detach timeout in seconds
_lm_lhupd_interval 5 load and health update interval
_lm_lmd_waittime 8 default wait time for lmd in centiseconds
_lm_lmon_nowait_latch TRUE if TRUE makes lmon get nowait latches with timeout loop
_lm_lms 0 number of background gcs server processes to start
_lm_lms_hipri_yield_spincount 10 LMS or slaves yield spin count threshold when in hi-pri
_lm_lms_no_yield FALSE if TRUE, LMS will not yield in spin mode
_lm_lms_opt_priority TRUE enable freeslot lms priority optimization
_lm_lms_priority_check_frequency 60000 frequency of LMS priority decisions in milliseconds
_lm_lms_priority_dynamic TRUE enable lms priority modification
_lm_lms_rt_threshold maximum number of real time lms processes on machine
_lm_lms_spin FALSE make lms not sleep
_lm_lms_waittime 3 default wait time for lms in centiseconds
_lm_local_hp_enq TRUE use static file affinity for HP enqueue mastership
_lm_locks 12000 number of enqueues configured for cluster database
_lm_low_load_percentage 75 low watermark percentage for load threshold
_lm_master_weight 1 master resource weight for this instance
_lm_max_lms 0 max. number of background global cache server processes
_lm_max_lms_block_time 5 max blocking time allowed on LMS (sec)
_lm_mp_additional_big_buffers 20 GES MP extra big buffers per pool
_lm_mp_additional_reg_buffers 20 GES MP extra regular buffers per pool
_lm_mp_avail_queue_threshold 0 GES MP avail queue threshold
_lm_mp_bulk_mbuf_free FALSE GES MP bulk free message buffer queues
_lm_mp_bulk_trigger_divisor 2 GES MP bulk free trigger divisor
_lm_mp_expand_big_pool_percent 1 GES MP expand big pool
_lm_mp_expand_reg_pool_percent 5 GES MP expand regular pool
_lm_mp_latch_trigger 4000 GES MP Latch trigger threshold for trace lines
_lm_mp_latch_trigger_soft 40000 GES MP Latch trigger threshold for soft assert
_lm_mp_share_lms_pools TRUE GES MP share LMS pools with critical BGs
_lm_mp_small_lms_pools TRUE GES MP small regular pool for LMS when not sharing
_lm_msg_batch_size 0 GES batch message size
_lm_msg_cleanup_interval 3000 GES message buffer cleanup interval time
_lm_msg_pool_dump_threshold 20000 GES message pool dump threshold in terms of buffer count
_lm_msg_pool_user_callstack_dump FALSE GES message pool call stack dump upon exceeding of threshold
_lm_mwin_req_queue_max_size 4000 maximum size of multiwindow request queue
_lm_new_esm 1 use new enter server mode code
_lm_no_lh_check FALSE skip load and health check at decision points
_lm_no_sync TRUE skip reconfiguration/drm syncr/synca messaging
_lm_node_join_opt FALSE cluster database node join optimization in reconfig
_lm_nodrm_service_pct 95 minimum nonsingleton service access percentage to disable drm
_lm_non_fault_tolerant FALSE disable cluster database fault-tolerance mode
_lm_nonisolated_restype TOTTUL string of resource types banned from enqueue isolation
_lm_num_bnft_stats_buckets 1 number of buckets in the benefit stats hash table
_lm_num_msg_pools_per_type 1 number of GES message pools per type
_lm_num_proc_frz_dump 5 reconfiguration: max number processes to dump in frz
_lm_num_pt_buckets 8192 number of buckets in the object affinity hash table
_lm_num_pt_latches 128 number of latches in the object affinity hash table
_lm_omni_ack_timeout 60 Max time to wait for omni acks before triggering netcheck in secs
_lm_optmode_switch 0 GES: Optmode switching for enqueues (none, manual, stats-driven)
_lm_pdb_domains_enable 7 enable pdb domains in DLM
_lm_pdb_preopen TRUE enable pdb preopen
_lm_pdb_preopen_timeout 1800 pdb preopen timeout in seconds
_lm_pdb_wait_all_gone FALSE pdb domain attach wait until all locks are gone
_lm_pdb_weight_opts 90 options to size RHT structures per pdb
_lm_postevent_buffer_size 256 postevent buffer size
_lm_preregister_css_restype CF enqueue type that requires pre-registration to css
_lm_proactive_rcvinst_opts 3 proactive recovery instance attach options
_lm_proc_freeze_timeout 70 reconfiguration: process freeze timeout
_lm_proc_frz_dump_timeout 500 reconfiguration: process freeze dump timeout (msec)
_lm_process_batching TRUE GES implicit process batching for IPC messages
_lm_process_lock_q_scan_limit 100 limit on scanning process lock queue instead of resource convert lock
_lm_procs 1088 number of client processes configured for cluster database
_lm_psrcfg TRUE enable pseudo reconfiguration
_lm_rac_spare_dp1 0 rac parameter dp1
_lm_rac_spare_dp10 rac parameter dp10
_lm_rac_spare_dp11 0 rac parameter dp11
_lm_rac_spare_dp12 0 rac parameter dp12
_lm_rac_spare_dp13 0 rac parameter dp13
_lm_rac_spare_dp14 0 rac parameter dp14
_lm_rac_spare_dp15 0 rac parameter dp15
_lm_rac_spare_dp16 0 rac parameter dp16
_lm_rac_spare_dp17 0 rac parameter dp17
_lm_rac_spare_dp18 0 rac parameter dp18
_lm_rac_spare_dp19 0 rac parameter dp19
_lm_rac_spare_dp2 100 rac parameter dp2
_lm_rac_spare_dp20 0 rac parameter dp20
_lm_rac_spare_dp21 0 rac parameter dp21
_lm_rac_spare_dp22 0 rac parameter dp22
_lm_rac_spare_dp23 0 rac parameter dp23
_lm_rac_spare_dp24 0 rac parameter dp24
_lm_rac_spare_dp25 0 rac parameter dp25
_lm_rac_spare_dp26 0 rac parameter dp26
_lm_rac_spare_dp27 0 rac parameter dp27
_lm_rac_spare_dp28 0 rac parameter dp28
_lm_rac_spare_dp29 0 rac parameter dp29
_lm_rac_spare_dp3 0 rac parameter dp3
_lm_rac_spare_dp30 0 rac parameter dp30
_lm_rac_spare_dp4 0 rac parameter dp4
_lm_rac_spare_dp5 0 rac parameter dp5
_lm_rac_spare_dp6 rac parameter dp6
_lm_rac_spare_dp7 rac parameter dp7
_lm_rac_spare_dp8 rac parameter dp8
_lm_rac_spare_dp9 rac parameter dp9
_lm_rac_spare_p1 0 rac parameter p1
_lm_rac_spare_p10 rac parameter p10
_lm_rac_spare_p11 0 rac parameter p11
_lm_rac_spare_p12 0 rac parameter p12
_lm_rac_spare_p13 0 rac parameter p13
_lm_rac_spare_p14 rac parameter p14
_lm_rac_spare_p15 rac parameter p15
_lm_rac_spare_p16 rac parameter p16
_lm_rac_spare_p2 0 rac parameter p2
_lm_rac_spare_p3 0 rac parameter p3
_lm_rac_spare_p4 0 rac parameter p4
_lm_rac_spare_p5 0 rac parameter p5
_lm_rac_spare_p6 rac parameter p6
_lm_rac_spare_p7 rac parameter p7
_lm_rac_spare_p8 rac parameter p8
_lm_rac_spare_p9 rac parameter p9
_lm_rcfg_kjcdump_time 60 dlm reconfiguration communication dump interval
_lm_rcfg_timeout 489 dlm reconfiguration timeout
_lm_rcvinst TRUE instance inheritance
_lm_rcvinst_atp_opt TRUE recovery instance optimization for ATP
_lm_rcvinst_sga_threshold 85 recovery buddy SGA threshold
_lm_rcvr_hang_allow_time 70 receiver hang allow time in seconds
_lm_rcvr_hang_cfio_kill FALSE to kill receiver hang at control file IO
_lm_rcvr_hang_check_frequency 10 receiver hang check frequency in seconds
_lm_rcvr_hang_check_system_load FALSE examine system load when check receiver health
_lm_rcvr_hang_kill TRUE to kill receiver hang
_lm_rcvr_hang_systemstate_dump_level 0 systemstate dump level upon receiver hang
_lm_receiver_type 0 receiver thread type performing receive function
_lm_recovery_pdbw_reduction 4 recovery member pdbw reduction
_lm_recovery_set 1 enable recovery set checking for accessing invalid domains
_lm_reloc_use_mhint FALSE if TRUE, AR-/AH-enqueues use mastering hints
_lm_remount_check_interval 100 LM remount check time interval in ms
_lm_req_max_life 36000 maximum life time of request in seconds
_lm_res_hash_bucket 0 number of resource hash buckets
_lm_res_part 128 number of resource partition configured for gcs
_lm_res_tm_hash_bucket 0 number of extra TM resource hash buckets
_lm_resend_open_convert_timeout 30 timeout in secs before resubmitting the open-convert
_lm_resource_behchng 3 GES resource behavior change enabling
_lm_resource_recycle_cnt 4 GES: number of resources to recycle optimization
_lm_ress 6000 number of resources configured for cluster database
_lm_rm_object_bypass TRUE enable read-mostly object bypass for HARIM
_lm_rm_slaves 1 number of remastering slaves
_lm_rs_priority_reset_delay 30 delay from end of reconfig to RS reducing its priority
_lm_send_mode auto GES send mode
_lm_send_queue_batching TRUE GES send queue message batching
_lm_send_queue_length 5000 GES send queue maximum length
_lm_sendproxy_reserve 25 GES percentage of send proxy reserve of send tickets
_lm_share_lock_opt TRUE if TRUE enables share lock optimization
_lm_share_lock_pdbisolation TRUE if TRUE enables share lock optimization with pdb isolation
_lm_share_lock_restype string of enqueue resource types eligible for S-optimisation
_lm_share_opt_async_open_pdb TRUE if TRUE enables s-opt with async open pdb
_lm_single_inst_affinity_lock FALSE enable single instance affinity lock optimization
_lm_singleton_pdb_opt TRUE RAC PDB singleton optimization
_lm_sndq_flush_int 5 send queue flush time interval (ms)
_lm_sp_slave_mode 0 sendproxy thread operation mode
_lm_sp_slaves 0 number of sendproxy threads
_lm_spare_threads 0 number of spare threads to be created by the GPnP master
_lm_spare_undo 0 number of spare undo tablespaces to be created by GPnP master
_lm_sq_batch_factor 2 GES send queue minimum batching factor
_lm_sq_batch_type auto GES send queue batching mechanism
_lm_sq_batch_waittick 3 GES send queue batching waittime in tick
_lm_sq_batch_waittick_worker 10 GES send queue batching waittime for worker in tick
_lm_sync_timeout 163 Synchronization timeout for DLM reconfiguration steps
_lm_throttle_time_interval 60 GES message throttle interval time in sec
_lm_ticket_active_sendback 50 Flow control ticket active sendback threshold
_lm_ticket_check_inject FALSE Inject tickets when flow control tkt leak discoverd
_lm_ticket_cluster_max 10000 GES messaging tickets cluster size maximum
_lm_ticket_cluster_per_inst 1000 GES messaging tickets cluster per instance
_lm_ticket_low_limit_warning 10 lowest number of avail tickets percentage threshold warning
_lm_ticket_min 50 GES messaging tickets per instance minimum
_lm_ticket_sgasize_divisor 50 GES messaging tickets sga size divisor
_lm_ticket_sgasize_max 5000 GES messaging tickets sga size maximum
_lm_tickets 1000 GES messaging tickets
_lm_timed_statistics_level 0 if non zero, it enables timed statistics on lmd and lms
_lm_tkt_leak_check_count 5 Consecutive low NULLACKs to trigger leak check
_lm_tkt_leak_check_seconds 300 Duration of leak check in seconds
_lm_tx_delta 16 TX lock localization delta
_lm_uid_default_lookup_value TRUE returns the default value for uid to id translation
_lm_use_gcr TRUE use GCR module if TRUE
_lm_use_new_defmsgtmo_action TRUE use new defered msg queue timeout action
_lm_use_tx_tsn TRUE use undo tsn affinity master as TX enqueue master
_lm_use_us_timer FALSE Use microsecond timer for LM hist
_lm_validate_pbatch FALSE GES process batch validation
_lm_wait_for_hub_rcv_timeout 300000 read-only insts wait for hub avaliable to recover in millis
_lm_wait_pending_send_queue TRUE GES wait on pending send queue
_lm_watchpoint_kjmddp list of kjmddp fields for memory watchpoint
_lm_watchpoint_maximum 3 GES number of watchpoints
_lm_watchpoint_timeout 3600 GES maximum time in seconds to keep watchpoint
_lm_worker_mode 0 LMS worker thread mode
_lm_worker_threads 0 number of LMS worker threads
_lm_xids 1196 number of transaction IDs configured for cluster database
_lmhb_aggressive_termination FALSE terminate instance immediately when fatal proc timeout exceeded
_lmhb_max_dynamic_hb 10 max number of proc heartbeats that can be dynamically monitored
_lmhb_min_pct_hbcnt 0 minimum heartbeat ticks to not be flagged as hung (percent)
_lmhb_minimum_idle_cpu_pct_for_action 10 minimum idle CPU percentage for resolution action
_lmhb_procstate_dump_cputime_limit 60 hb diagnostic cputime limit for process state dump in secs
_lmhb_procstate_dump_runtime_limit 60 hb diagnostic runtime limit for process state dump in secs
_lmhb_select_final_blkr FALSE selects ultimate non-fatal blocker in hang chain (if present)
_lmn_invalidlkr_enabled TRUE suppl logging for invalid lkr enabled
_lms_rollbacks 0 Maximum number of CR rollbacks per block under LMS server
_load_without_compile none Load PL/SQL or Database objects without compilation
_loader_switch_to_bigdata 0 Allow switching of ORACLE_LOADER to ORACLE_BIGDATA access driver
_lob_use_locator_varying_width FALSE use varying width flag in lob locator
_local_arc_assert_on_wait FALSE Assert whenever local ORL arch waits for space
_local_communication_costing_enabled TRUE enable local communication costing when TRUE
_local_communication_ratio 50 set the ratio between global and local communication (0..100)
_local_hang_analysis_interval_secs 3 the interval at which local hang analysis is run
_lock_get_soft_assert_timeout 900 lock get soft assert timeout in seconds, 0 to disable
_lock_next_constraint_count 3 max number of attempts to lock _NEXT_CONSTRAINT
_lock_ref_constraint_count 50 number of nowait attempts to lock referential constraint
_lock_ref_descendants_count 50 number of nowait attempts to lock ref-partitioning descendants
_lock_ref_descendants_interval 100 sleep interval between ref-partitioning descendants lock attemps
_lockdown_error_ignore_user_type LOCAL User scope for ignoring lockdown error and log metadata
_lockdown_error_logging_mode LOG_WHEN_IGNORE_ERRO Log lockdown error in metadata table
R
_lockdown_exec_skip_invalidation FALSE Skip dependent lib-cache object invalidation upon disabling execution
_lockdown_execution_check FALSE Check if lockdown execution check feature is enabled in PDB
_log_archive_buffers 10 Number of buffers to allocate for archiving
_log_archive_dest_force_async FALSE force async on service destinations
_log_archive_network_redo_size 10 Log archive network redo buffer size used by ARCH
_log_archive_prot_auto_demote FALSE log archive protection auto demotion
_log_archive_strong_auth TRUE log archive security strong auth
_log_archive_trace_pids log archive trace pids parameter
_log_blocks_during_backup TRUE log block images when changed during backup
_log_buffer_coalesce FALSE Coalescing log buffers for log writes
_log_buffers_corrupt FALSE corrupt redo buffers before write
_log_buffers_debug FALSE debug redo buffers (slows things down)
_log_checkpoint_recovery_check 0 # redo blocks to verify after checkpoint
_log_client_ip_address_to_alert FALSE Log Client IP Address to alert file for each login
_log_committime_block_cleanout TRUE Log commit-time block cleanout
_log_deletion_policy mandatory archivelog deletion policy for mandatory/all destination
_log_file_sync_timeout 10 Log file sync timeout (centiseconds)
_log_max_optimize_threads 128 maximum number of threads to which log scan optimization is applied
_log_parallelism_dynamic TRUE Enable dynamic strands
_log_parallelism_max 2 Maximum number of log buffer strands
_log_private_mul 5 Private strand multiplier for log space preallocation
_log_private_parallelism_mul 10 Active sessions multiplier to deduce number of private strands
_log_read_buffer_size 8 buffer size for reading log files
_log_read_buffers 8 Number of log read buffers for media recovery
_log_segment_dump_parameter TRUE Dump KSP on Log Segmentation
_log_segment_dump_patch TRUE Dump Patchinfo on Log Segmentation
_log_silicon_secured_memory TRUE enable silicon secured memory (log)
_log_simultaneous_copies 8 number of simultaneous copies into redo buffer(# of copy latches)
_log_space_errors TRUE should we report space errors to alert log
_log_switch_timeout 0 Maximum number of seconds redos in the current log could span
_log_switch_tracing_iterations 5 no. of iterations to trace after logswitch timeout
_log_switch_tracing_timeout 200 dbwr to trace after logswitch timeout in secs
_log_write_info_size 4096 Size of log write info array
_log_write_worker_post_spinwait 0 How long log write workers spin wait before posting FGs
_log_write_worker_task_prefetch EARLY Log write worker prefetches tasks
_log_write_worker_task_spinwait 0 How long log write workers spin wait for imminent tasks
_log_writer_worker_dlm_hearbeat_update_freq 5000 LGWR worker DLM health-monitoring heartbeat update frequency (ms)
_logminer_parallel_read TRUE LogMiner parallel read
_logout_storm_rate 0 number of processes that can logout in a second
_logout_storm_retrycnt 600 maximum retry count for logouts
_logout_storm_timeout 5 timeout in centi-seconds for time to wait between retries
_long_bcast_ack_warning_threshold 500 threshold for long bcast ack warning messages in ms
_long_log_write_warning_threshold 500 threshold for long log write warning messages in ms
_longops_enabled TRUE longops stats enabled
_longops_per_latch 64 number of longops to allocate per latch
_lookup_versioned_profile FALSE Enable version lookup for lockdown profiles
_lost_write_parallelism_change_tracking 2 Maximum number of lost write change tracking buffers
_low_min_lwt_lt 4 lower minimum low threshold for LWTs
_low_priority_processes Low Priority Process Name Mask
_low_scn_headroom_warning_threshold_days 90 low SCN headroom warning threshold in days
_low_server_threshold 0 low server thresholds
_lowest_priority_processes Lowest Priority Process Name Mask
_lowres_drift_allowed_sec 5 allowed lowres timer drift for VKTM
_lreg_max_update_history 3600 lreg max update history
_lreg_significant_change 3 lreg significant change
_lreg_update_lag_mins 10 lreg update lag (in minutes)
_lrgdbcz6_ignore_restrictions FALSE Temp parameter to ignore app script restrictions for lrgdbcz6
_ltc_trace 0 tracing level for load table conventional
_lthread_cleanup_intv_secs 1 interval for cleaning lightweight threads in secs
_lthread_clnup_hk_wait_secs 3 timeout after hard killing operation for lthread to exit
_lthread_clnup_pmon_softkill_wait_secs 1 wait timeout for PMON between soft kill and hard kill of lthreads
_lthread_clnup_spawner_sk_wait_secs 30 timeout for spawner between soft kill and hard kill of lthreads
_lthread_debug FALSE Enable Debugging mode for lightweight threads
_lthread_enabled TRUE Enable lightweight threads
_lthread_idle_timeout_secs 600 Idle timeout in seconds for LWTs to terminate
_lthread_max_spawn_time_csecs 12000 maximum time interval a spawner will wait for a lthread to get ready
_lthread_spawn_check_intv_ms 10 time interval for a spawner to check for spawnee to get ready
_lthread_step_debugging FALSE Enable Step wise Debugging mode for lightweight threads
_main_dead_process_scan_interval 0 PMON main dead process scan interval (in seconds)
_map_service_name FALSE Map service names between Proxy PDB and Referenced PDB
_mask_user_sql_text FALSE Mask user SQL text in fixed tables and views
_master_direct_sends 63 direct sends for messages from director (DFS)
_mav_refresh_consistent_read TRUE refresh materialized views using consistent read snapshot
_mav_refresh_double_count_prevented FALSE materialized view MAV refreshes avoid double counting
_mav_refresh_opt 0 optimizations during refresh of materialized views
_mav_refresh_unionall_tables 3 # tables for union all expansion during materialized view refresh
_max_aq_persistent_queue_memory 10 max aq persistent queue memory
_max_async_wait_for_catch_up 20 Switchover wait time for async LNS to catch up in seconds
_max_clients_per_emon 8 maximum number of clients per emon
_max_cr_rollbacks 1000 Maximum number of CR rollbacks per block (LMS)
_max_data_transfer_cache_size 536870912 Maximum size of data transfer cache
_max_def_granule_size 67108864 maximum default SGA granule size
_max_defer_gran_xfer_atonce 10 Maximum deferred granules transferred by MMAN atonce
_max_dist_bt_chains 100 maximum number of chains for distributed transaction
_max_dynamic_processes 320 max dynamic processes count
_max_dynamic_sessions 504 max dynamic session count
_max_exponential_sleep 0 max sleep during exponential backoff
_max_filestat_tries 10 maximum number of file stat tries
_max_flashback_shrink_size 1048576 maximum size(in KBs) a datafile can be shrunk with flashback DB
_max_fsu_exptime 7200 Fast Space Usage: Entry expiration time in seconds
_max_fsu_segments 1024 Maximum segments to track for fast space usage
_max_fsu_sgapcent 10 Percentage of shared pool for Fast Space Usage
_max_fsu_stale_time 600 Allowed space usage staleness in seconds
_max_gg_extracts 65535 maximum limit for goldengate extract instances
_max_idle_blocker_types 0 Disable blocker types for MAX_IDLE_BLOCKER_TIME
_max_idle_sess_pcnt 95 session limit percentage to consider idle sessions as blocker
_max_incident_file_size 10G Maximum size (in KB, MB, GB, Blocks) of incident dump file
_max_index_block_lost_writes 10 Maximum allowable occurrences of lost writes on index blocks
_max_io_size 1048576 Maximum I/O size in bytes for sequential file accesses
_max_ios_per_worker 512 Maximum outstanding IOs per io_uring worker
_max_jsimt_autodumps 1 Max jsimt autodumps per day
_max_kcnibr_ranges 1048576 Max number of nonlogged data block ranges
_max_large_io 0 IORM:max number of large I/O's to issue
_max_largepage_alloc_time_secs 10 Maximum number of seconds to spend on largepage allocation
_max_library_cache_dumps 1000 Maximum number of dumps allowed
_max_lns_shutdown_archival_time 30 Maximum time spent by LNS to archive last log during shutdown
_max_log_write_parallelism 1 Maximum parallelism within a log write (auto=0)
_max_lwt_cpu_ratio 0 ratio to determine the maximum CPUs for LWTs
_max_outstanding_log_writes 2 Maximum number of outstanding redo log writes
_max_pdb_services 0 Maximum number of database services allowed inside the PDB
_max_pending_scn_bcasts 9 maximum number of pending SCN broadcasts
_max_physmem_perc_mmt 90 maximum percentage of physical memory for memory_max_target
_max_physmem_perc_sga 80 maximum percentage of physical memory for SGA
_max_physmem_perc_um 90 maximum percentage of physical memory for Unified Memory
_max_protocol_support 10000 Max occurrence protocols supported in a process
_max_queued_report_requests 300 Maximum number of report requests that can be queued in a list
_max_reasonable_scn_rate 32768 Max reasonable SCN rate
_max_remote_tool_requests 10 Maximum number of remote tool requests
_max_report_flushes_percycle 0 Max no of report requests that can be flushed per cycle
_max_row_cache_dumps 1000 Maximum number of dumps allowed
_max_rwgs_groupings 8192 maximum no of groupings on materialized views
_max_services 25000 maximum number of database services
_max_shrink_obj_stats 0 number of segments for which shrink stats will be maintained
_max_shutdown_abort_secs 10 Maximum wait time for shutdown abort in seconds
_max_sleep_holding_latch 4 max time to sleep while holding a latch
_max_small_io 0 IORM:max number of small I/O's to issue
_max_small_page_sga_size 0 Maximum SGA size with small pages
_max_spacebg_msgs_percentage 50 maximum space management interrupt message throttling
_max_spacebg_slaves 1024 maximum space management background slaves
_max_spacebg_tasks 8192 maximum space management background tasks
_max_sql_binds 65535 maximum number of binds allowed in a SQL statement
_max_sql_stmt_length 0 Maximum allowed sql statement length
_max_stmt_tries_sync 2 Maximum number of tries of a statement during Application Sync
_max_string_size_bypass 0 controls error checking for the max_string_size parameter
_max_sys_next_extent 0 Dictionary managed SYSTEM tablespace maximum next extent size in MB (a
_maxrpop_files_inst 4 Maxmimum files rpop works on per instance
_maxrpop_instances 8 Maxmimum rpop file instances
_maxval_job_queue_processes Maximum value of job queue slave processes parameter for the PDB
_maxval_max_idle_blocker_time 0 maximum value of max_idle_blocker_time
_maxval_max_idle_time 0 maximum value of max_idle_time
_mdapi_transform_engine LPX DDL transformation engine
_media_recovery_read_batch 32 media recovery block read batch
_mem_annotation_pr_lev 0 private memory annotation collection level
_mem_annotation_scale 1 memory annotation pre-allocation scaling
_mem_annotation_sh_lev 0 shared memory annotation collection level
_mem_annotation_store FALSE memory annotation in-memory store
_mem_std_extent_size 4096 standard extent size for fixed-size-extent heaps
_memoptimize_write_shrink_minsize TRUE shrinks Ingest Global Area size down to min size
_memoptimize_writes_allow_fk DISABLE enable both foreign key and memoptimize write for tables
_memoptimize_writes_no_wait FALSE enable no wait conventional insert path for memoptimize write
_memoptimize_xmem_pool_size 0 Size of MEMOPTIMIZE buffer pool for standard block size buffers on ext
_memory_adi_bytes_per_alloc 0 bytes per allocation to get memory application data integrity
_memory_adi_clear_versions FALSE enable clearing versions on huge pages
_memory_adi_enabled FALSE enable memory application data integrity
_memory_adi_extend FALSE enable ADI for kgh headers and free memory
_memory_adi_heap_mask 610 enable ADI versioning for these heaps
_memory_adi_module_mask 0 bit mask of modules to enable ADI versioning
_memory_adi_precise_errors FALSE enable precise memory application data integrity errors
_memory_broker_log_stat_entries 5 memory broker num stat entries
_memory_broker_marginal_utility_bc 12 Marginal Utility threshold pct for bc
_memory_broker_marginal_utility_imc 6 Marginal Utility threshold pct for imc
_memory_broker_marginal_utility_sp 7 Marginal Utility threshold pct for sp
_memory_broker_sga_grow_split TRUE if TRUE, allow sga grow to be split between cache and sp
_memory_broker_sga_grow_splitif_size 20 split sga target grow if atleast this many granules.
_memory_broker_sga_shrink_chunk_size 20 if kmgsbshnkbrk set, sga request resize chunk size in granules.
_memory_broker_sga_shrink_chunked TRUE if TRUE, break a large sga shrink request to chunks
_memory_broker_shrink_heaps 15 memory broker allow policy to shrink shared pool
_memory_broker_shrink_imc 15 memory broker allow policy to shrink imc pool
_memory_broker_shrink_java_heaps 900 memory broker allow policy to shrink java pool
_memory_broker_shrink_streams_pool 900 memory broker allow policy to shrink streams pool
_memory_broker_shrink_timeout 60000000 memory broker policy to timeout shrink shared/java pool
_memory_broker_stat_interval 30 memory broker statistics gathering interval for auto sga
_memory_checkinuse_timeintv 30 check inuse time interval
_memory_imm_mode_without_autosga TRUE Allow immediate mode without sga/memory target
_memory_initial_sga_split_perc 60 Initial default sga target percentage with memory target
_memory_management_tracing 0 trace memory management activity
_memory_max_tgt_inc_cnt 0 counts the times checker increments memory target
_memory_mgmt_fail_immreq FALSE always fail immediate mode request
_memory_mgmt_immreq_timeout 150 time in seconds to time out immediate mode request
_memory_nocancel_defsgareq FALSE do not cancel deferred sga reqs with auto-memory
_memory_per_cpu_count 0 memory per cpu count
_memory_sanity_check 0 partial granule sanity check
_merge_monitor_threshold 10000 threshold for pushing information to MERGE monitoring
_messages 640 message queue resources - dependent on # processes & # buffers
_mga_large_page_path large page path
_mga_pid_root_head_count 16 mga pid root head count
_mgd_rcv_handle_orphan_datafiles FALSE Managed recovery handle orphan datafile situation
_midtier_affinity_cluswait_prc_threshold 6 cluster wait precentage threshold to enter affinity
_midtier_affinity_goodness_threshold 2000 goodness gradient threshold to dissolve affinity
_min_autotask_percentage
_min_lwt_lt 10 minimum low threshold for LWTs
_min_spacebg_slaves 2 minimum space management background slaves
_min_sys_percentage
_min_sys_process 2 minimum system processess
_min_time_between_psp0_diag_secs 300 minimum time between PSP0 diagnostic used for flow control
_min_undosegs_for_parallel_fptr 100 minimum undo segments for parallel first-pass recovery
_minact_timeout 180 Configurable interval for minact-scn
_minfree_plus 0 max percentage of block space + minfree before we mark block full
_minimal_stats_aggregation TRUE prohibit stats aggregation at compile/partition maintenance time
_minimum_blocks_to_shrink 0 minimum number freeable blocks for shrink to be present
_minimum_db_flashback_retention 60 Minimum flashback retention
_minimum_extents_to_shrink 1 minimum number freeable extents for shrink to be present
_minmax_spacebg_slaves 2 min-max space management background slaves
_mira_free_unused_buffers TRUE free unused buffers when idle
_mira_mark_archivelog_timeout 60 mira mark archive log as applied timeout
_mira_num_local_buffers 25 Number of local buffers for multi instance media recovery
_mira_num_receive_buffers 25 Number of receive buffers for multi instance media recovery
_mira_preferred_threads_to_recover 0 preferred threads to recover at coordinator instance
_mira_rcv_catchup_buffers 5 Number of buffers to allocate before catch up
_mira_rcv_max_buffers 500 Maximum number of outstanding buffers
_mira_sender_process 2 Number of sender processes
_mirror_redo_buffers FALSE Save buffers for debugging redo corruptions
_mle_compilation_dump_graph_on_crash FALSE dump compilation graphs to the trace file when compilation crashes in
_mle_compilation_errors_are_fatal FALSE failed compilations are fatal for MLE
_mle_compilation_sync FALSE force compilation to be synchronous for MLE
_mle_compile_immediately FALSE force compilation for MLE
_mle_cross_context_statement_cache TRUE enable sharing of parsed statements across MLE contexts.
_mle_enable_compilation TRUE enable runtime compilation for MLE
_mle_enable_compilation_isolates TRUE enable MLE runtime compilation in separate isolates
_mle_enable_mpk strict Enable memory protection keys in MLE.
_mle_enable_recursion TRUE enable recursive/reentrant MLE
_mle_max_heap_size 1000 maximum heap size used by MLE in a session, in MB
_mle_session_statement_cache_size 30 number of statements to cache in MLE per session.
_mmv_query_rewrite_enabled TRUE allow rewrites with multiple MVs and/or base tables
_modify_column_index_unusable FALSE allow ALTER TABLE MODIFY(column) to violate index key length limit
_modify_other_app_object FALSE Parameter to allow modification of another application's object
_modify_protected_profile_parameters List of password parameters allowed to be modified for protected profi
_monitor_sql_stmt_length FALSE Monitor sql statement length
_monitor_workload_interval 24 workload monitoring interval in hours
_mpmt_enabled FALSE MPMT mode enabled
_mpmt_enabled_backgrounds * mpmt enabled backgrounds
_mpmt_fg_enabled FALSE MPMT mode foreground enabled
_mpmt_fthread_mode 0 MPMT - Fthreads Mode for FG/BG/ALL
_mpmt_prefer_enabled TRUE MPMT prefer mode enabled
_mpmt_procs_per_osp 100 max procs per osp
_mpmt_single_process_instance FALSE MPMT - single process instance mode enabled
_mpmt_use_fthread FALSE MPMT - Use Fthreads
_mt_redo_log_record_wakeup_interval 1440 Wake up time in minutes to purge redo log table records
_mt_rfs_flush_header_interval 10 MT flush header interval
_mt_rfs_gap_interval 720 MT Gap limit
_mt_rfs_reap_comp_io_interval 2 MT reap completed IO interval in secs
_mt_rfs_register_lag_seq 24 MT Register Lag Sequence
_mttr_stat_cf_update_freq 120 frequency of update MTTR statistics into controlfile
_multi-statement_pdml_support PDML is multi-statement PDML allowed (remove touch-once restriction)
_multi_instance_pmr TRUE enable multi instance redo apply
_multi_join_key_table_lookup TRUE TRUE iff multi-join-key table lookup prefetch is enabled
_multi_transaction_optimization_enabled TRUE reduce SGA memory use during create of a partitioned table
_multiple_char_set_cdb TRUE Multiple character sets enabled in CDB
_multiple_instance_recovery FALSE use multiple instances for media recovery
_multiple_name_convert_patterns FALSE apply multiple patterns on a name during file_name_convert
_mutex_skip_spin_waiter_count 20 Active waiter count to skip mutex spin
_mutex_spin_count 255 Mutex spin count
_mutex_wait_scheme 2 Mutex wait scheme
_mutex_wait_time 1 Mutex wait time
_mv_access_compute_fresh_data ON mv access compute fresh data
_mv_add_log_placeholder TRUE add log placeholder
_mv_cleanup_orphaned_metadata TRUE cleanup orphaned materialized view metadata
_mv_complete_refresh_conventional FALSE use conventional INSERTs for MV complete refresh
_mv_deferred_no_log_age_val TRUE avoid build deferred MV log age validate
_mv_expression_extend_size 4096 MV expression extend size
_mv_generalized_oj_refresh_opt TRUE enable/disable new algorithm for MJV with generalized outer joins
_mv_master_lock_timeout 3 timeout that mv create/drop waits to lock the master table
_mv_refresh_ana 0 what percent to analyze after complete/PCT refresh
_mv_refresh_costing rule refresh decision based on cost or on rules
_mv_refresh_delta_fraction 10 delta mv as fractional percentage of size of mv
_mv_refresh_enhanced_dml_detection ON_RC enable enhanced detection of DML types from MV log
_mv_refresh_eut TRUE refresh materialized views using EUT(partition)-based algorithm
_mv_refresh_force_parallel_query 0 force materialized view refreshes to use parallel query
_mv_refresh_insert_no_append TRUE materialized view refresh using insert no append
_mv_refresh_new_setup_disabled FALSE materialized view MV refresh new setup disabling
_mv_refresh_no_idx_rebuild FALSE avoid index rebuild as part of the MV refresh
_mv_refresh_pipe_timeout 600 timeout that MV refresh coordinator waits for a job pipe
_mv_refresh_pkfk_data_units_opt auto control MV refresh based on the assumption of PK-FK data units
_mv_refresh_pkfk_relationship_opt TRUE control MV refresh based on the use of PK-FK relationships
_mv_refresh_rebuild_percentage 10 minimum percentage change required in MV to force an indexrebuild
_mv_refresh_selections TRUE create materialized views with selections and fast refresh
_mv_refresh_shrink_log TRUE materialized view refresh shrink MV log
_mv_refresh_truncate_log FALSE materialized view refresh truncate MV log
_mv_refresh_update_analysis TRUE materialized view refresh using update analysis
_mv_refresh_use_hash_sj TRUE use hash_sj hint in queries
_mv_refresh_use_no_merge TRUE use no_merge hint in queries
_mv_refresh_use_stats FALSE pass cardinality hints to refresh queries
_mv_refsched_timeincr 300000 proportionality constant for dop vs. time in MV refresh
_mv_rolling_inv FALSE create/alter mv uses rolling cursor invalidation instead of immediate
_mwin_schedule TRUE Enable/disable Maintenance Window Schedules
_nameservice_consistency_check TRUE NameService Consistency check switch
_nameservice_request_batching TRUE NameService request batching switch
_nanovos_library Nanovos instance object path
_nanovos_name Nanovos instance name
_nanovos_type Nanovos instance type
_nbr_recovery_max_request_size 8 the maximum size in MBs of a request for data blocks
_nbr_recovery_target_bufs 0 the target number of oustanding buffers to maintain
_nbr_recovery_timeout 60 seconds recovery will wait for any invalid block range to arrive
_nchar_imp_cnv TRUE NLS allow Implicit Conversion between CHAR and NCHAR
_nchar_imp_conv TRUE should implicit conversion bewteen clob and nclob be allowed
_ncmb_readahead_enabled 0 enable multi-block readahead for an index scan
_ncmb_readahead_tracing 0 turn on multi-block readahead tracing
_ncomp_shared_objects_dir native compilation shared objects dir
_ndb_enable FALSE Native Database Blockchain Enable
_need_administer_fine_grained_audit_policy_for_fga TRUE Check ADMINISTER FINE GRAINED AUDIT POLICY privilege for administering
_need_administer_redaction_policy_for_redact TRUE Check ADMINISTER REDACTION POLICY privilege for administering REDACT p
_need_administer_row_level_security_policy_for_rls TRUE Check ADMINISTER ROW LEVEL SECURITY POLICY privilege for administering
_need_create_table_privilege_for_redact FALSE Check CREATE TABLE privilege for administering REDACT policy
_nested_loop_fudge 100 nested loop fudge
_nested_mv_fast_oncommit_enabled TRUE nested MV refresh fast on commit allowed
_netldp_common_users_as_local List of common users to be treated as local for network lockdown
_new_initial_join_orders TRUE enable initial join orders based on new ordering heuristics
_new_sort_cost_estimate TRUE enables the use of new cost estimate for sort
_newdev_service_sim FALSE simulate Newdev RDBMS restrictions
_newsort_enabled TRUE controls whether new sorts can be used as system sort
_newsort_ordered_pct 63 controls when new sort avoids sorting ordered input
_newsort_type 0 specifies options for the new sort algorithm
_next_constraint_cache_size 5 size of _NEXT_CONSTRAINT cache
_next_pdbid 3 Hint for the next PDBID to use when creating a new PDB entry
_nineteenth_spare_parameter nineteenth spare parameter - integer
_nineteenth_spare_pdb_parameter nineteenth spare pdb parameter - integer
_ninetieth_spare_parameter ninetieth spare parameter - string
_ninety-eighth_spare_parameter ninety-eighth spare parameter - string
_ninety-fifth_spare_parameter ninety-fifth spare parameter - string
_ninety-first_spare_parameter ninety-first spare parameter - string
_ninety-fourth_spare_parameter ninety-fourth spare parameter - string
_ninety-ninth_spare_parameter ninety-ninth spare parameter - string
_ninety-second_spare_parameter ninety-second spare parameter - string
_ninety-seventh_spare_parameter ninety-seventh spare parameter - string
_ninety-sixth_spare_parameter ninety-sixth spare parameter - string
_ninety-third_spare_parameter ninety-third spare parameter - string
_ninth_spare_parameter ninth spare parameter - integer
_ninth_spare_pdb_parameter ninth spare pdb parameter - integer
_nlj_batching_ae_flag 2 FAE flag type set after restoring to IO batching buffer
_nlj_batching_enabled 1 enable batching of the RHS IO in NLJ
_nlj_batching_misses_enabled 1 enable exceptions for buffer cache misses
_nls_binary TRUE force binary collation
_nls_parameter_sync_enabled TRUE enables or disables updates to v$parameter whenever an alter session s
_no_audit FALSE enable No Audit based on session user
_no_audit_user list of No Audit users
_no_catalog options whose schemas should not be created
_no_objects FALSE no object features are used
_no_or_expansion FALSE OR expansion during optimization disabled
_no_recovery_through_resetlogs FALSE no recovery through this resetlogs operation
_no_small_file FALSE Not to apply new extent scheme for small file temp spaces
_no_snapshot_root_clone FALSE No snapshot clone during Application Root Clone creation
_no_stale_joinback_rewrite FALSE No joinbacks if mv is stale
_node_instcnt_average_interval 1800 node inst count average interval in seconds
_node_instcnt_sample_frequency 60 node inst count average sample frequency in seconds
_node_instcnt_update_frequency 300 node inst count average global update frequency in seconds
_nologging_apply_stall_time 1000 milli-seconds recovery waits after DTC full before changing RCVID
_nologging_block_cleanout_delay 300 Nologging standby: block cleanout delay (seconds)
_nologging_fetch_demote_count 10 Nologging standby fetch demote count
_nologging_fetch_initial_interval 2 seconds recovery waits between issuing fetches for old ranges
_nologging_fetch_retry_interval_cold 1800 Interval before fetch request for older invalid block range
_nologging_fetch_retry_interval_hot 60 Interval before fetch request for recently created invalid block
_nologging_fetch_slv_wt 600 Nologging standby fetch slave wait time
_nologging_kcnbuf_hash_buckets 1024 Number of nologging buffer hash buckets
_nologging_kcnbuf_hash_latches 256 Number of nologging buffer hash latches
_nologging_load_slotsz 1048576 Nologging standby: direct load buffer size
_nologging_mode_override 0 Override the database logging mode; 1=Force, 2=NoForce, 3=LP, 4=DA
_nologging_progress_keep_alive 10 Nologging standby progress keep alive time
_nologging_sdcl_append_wait 200 Nologging standby append sdcl wait time
_nologging_sendbuf_ratio 90 Nologging standby: outstanding send buffer ratio
_nologging_slots 20 Nologging standby: initial buffer count
_nologging_standby_cold_buffer_timeout 500 Centi-seconds recovery will wait for a buffer that is not being sent b
_nologging_standby_dtc_expire 600 The number of seconds a Data Transfer Cache buffer may remain unclaime
_nologging_standby_fetch_disable FALSE controls whether invalid block ranges are fecthed during recovery
_nologging_standby_hot_buffer_timeout 500 Centi-seconds recovery will wait for a buffer being sent by a direct l
_nologging_standby_refetch_disable FALSE controls fetching of pre-existing invalid block ranges during standby
_nologging_txn_cmt_wait 1500 Nologging standby transaction commit wait time
_nologging_txn_history_to_sessions_percent 100 Ratio, as a percentage, of sessions to set X$KCNT max. size
_non_app_cross_con_collection FALSE enable cross container collection for non-application objects
_non_app_ignore_errors TRUE ignore errors during containers() on non-application object
_non_blocking_hard_parse_min_extend_time 2 minimum additional lifetime added to cursor
_nonce_history_buffer_size 0 Size of Nonce History Buffer
_nonfatalprocess_redo_dump_time_limit 3600 time limit, in secs, for diagnostic redo dumps by a non-fatal process
_noseg_for_unusable_index_enabled TRUE no segments for unusable indexes if set to TRUE
_not_waiting_significant_CPU 10 percent of CPU time when not in a wait which is significant
_notification_directive ENABLE enable/disable notification directive$
_notify_crs FALSE notify cluster ready services of startup and shutdown
_ns_max_flush_wt 1 Flush wait time for NetServer to flush oustanding writes
_ns_max_send_delay 15 Data Loss Time Bound for NetServer
_num_longop_child_latches 4 number of child latches for long op array
_num_rlslaves 8 number of rl slaves to clear orls
_num_undostat_intervals 576 number of intervals for undo statistics in SGA
_numa_buffer_cache_stats 0 Configure NUMA buffer cache stats
_numa_shift_enabled TRUE Enable NUMA shift
_numa_shift_value 0 user defined value for numa nodes shift
_numa_trace_level 0 numa trace event
_number_cached_attributes 10 maximum number of cached attributes per instance
_number_cached_group_memberships 2048 maximum number of cached group memberships
_number_group_memberships_per_cache_line 6 maximum number of group memberships per cache line
_number_ksim_group_req_threshold 64 ksim maximum number of group operations requests
_number_of_undo_blocks_to_prefetch 8 number of undo blocks to prefetch
_numgrans_per_file 64 Number of granules per SGA file
_nusa_data_containers list of data containers in the nusa universe
_nusa_metadata_store metadata store in nusa
_nusa_remote_data_containers disk groups with remote access for NUSA
_nvm_asm_dispatchers 1 number of NVM Dispatcher Slaves for ASM
_nvm_dbw_dispatchers 1 number of NVM Dispatcher Slaves for DBWRs
_nvm_dispatcher_bind_policy 1 NVM Dispatcher binding policy
_nvm_dispatchers 1 number of NVM Dispatcher Slaves
_nvmeof_zcopy_enable FALSE Enable Zero Copy for NVMeoF
_obj_ckpt_tracing 0 Enable object checkpoint tracing
_object_activity_control 0 controls tracing for object activity tracking system (OATS)
_object_activity_disable 0 disables some object activity tracking (OATS)
_object_activity_tracking TRUE enable object activity tracking system (OATS)
_object_link_fixed_enabled TRUE object linked views evaluated using fixed table
_object_linked_remote FALSE Enable remote transformation of Object Linked table
_object_number_cache_size 5 Object number cache size
_object_reuse_bast 2 if 1 or higher, handle object reuse
_object_statistics TRUE enable the object level statistics collection
_object_stats_max_entries 3072 Maximum number of entries to be tracked per stat
_objectstore_odm_segment_size 0 Internal variable Swift DLO segment size for ODM object store lib
_obsolete_result_cache_mode MANUAL USERS SHOULD NOT SET THIS! Used for old qksced parameterof result_cach
_odci_aggregate_save_space FALSE trade speed for space in user-defined aggregation
_odci_index_pmo_rebuild FALSE domain index running pmo rebuild
_offline_rollback_segments offline undo segment list
_ofs_read_buffer_size 1031680 OFS read ahead buffer size in bytes
_ofs_write_buffer_size 1048576 OFS write buffer size in bytes
_ogg_online_ddl TRUE ogg online ddl marker
_ogms_home GMS home directory
_olap_adv_comp_stats_cc_precomp 20 do additional predicate stats analysis for AW rowsource
_olap_adv_comp_stats_max_rows 100000 do additional predicate stats analysis for AW rowsource
_olap_aggregate_buffer_size 1048576 OLAP Aggregate max buffer size
_olap_aggregate_flags 0 OLAP Aggregate debug flags
_olap_aggregate_function_cache_enabled TRUE OLAP Aggregate function cache enabled
_olap_aggregate_max_thread_tuples 5000 OLAP Aggregate max thread tuples creation
_olap_aggregate_min_buffer_size 1024 OLAP Aggregate min buffer size
_olap_aggregate_min_thread_status 64 OLAP Aggregate minimum cardinality of dimensions for thread
_olap_aggregate_multipath_hier FALSE OLAP Aggregate Multi-path Hierarhies enabled
_olap_aggregate_statlen_thresh 1024 OLAP Aggregate status array usage threshold
_olap_aggregate_work_per_thread 1024 OLAP Aggregate max work parents
_olap_aggregate_worklist_max 5000 OLAP Aggregate max worklists generated at once
_olap_allocate_errorlog_format %8p %8y %8z %e (%n) OLAP Allocate Errorlog Format
_olap_allocate_errorlog_header Dim Source Ba OLAP Allocate Errorlog Header format
sis
%-8d %-8s %-8b Descr
iption
-------- -------- --
------ -----------
_olap_analyze_max 10000 OLAP DML ANALYZE command max cells to analyze
_olap_continuous_trace_file false OLAP logging definition
_olap_dbgoutfile_echo_to_eventlog FALSE OLAP DbgOutfile copy output to event log (tracefile)
_olap_dimension_corehash_force FALSE OLAP Dimension In-Core Hash Table Force
_olap_dimension_corehash_large 50000 OLAP Dimension In-Core Hash Table Large Threshold
_olap_dimension_corehash_pressure 90 OLAP Dimension In-Core Hash Table Pressure Threshold
_olap_dimension_corehash_size 30 OLAP Dimension In-Core Hash Table Maximum Memory Use
_olap_disable_loop_optimized FALSE Disable LOOP OPTIMIZED directive in OLAP_TABLE
_olap_eif_export_lob_size 2147483647 OLAP EIF Export BLOB size
_olap_lmgen_dim_size 100 Limitmap generator dimension column size
_olap_lmgen_meas_size 1000 Limitmap generator measure column size
_olap_object_hash_class 3 OLAP Object Hash Table Class
_olap_page_pool_expand_rate 20 OLAP Page Pool Expand Rate
_olap_page_pool_hi 50 OLAP Page Pool High Watermark
_olap_page_pool_hit_target 100 OLAP Page Pool Hit Target
_olap_page_pool_low 262144 OLAP Page Pool Low Watermark
_olap_page_pool_pressure 90 OLAP Page Pool Pressure Threshold
_olap_page_pool_shrink_rate 50 OLAP Page Pool Shrink Rate
_olap_parallel_update_server_num 0 OLAP parallel update server count
_olap_parallel_update_small_threshold 1000 OLAP parallel update threshold for number of small pagespaces
_olap_parallel_update_threshold 1000 OLAP parallel update threshold in pages
_olap_row_load_time_precision DEFAULT OLAP Row Load Time Precision
_olap_sesscache_enabled TRUE OLAP Session Cache knob
_olap_sort_buffer_pct 10 OLAP Sort Buffer Size Percentage
_olap_sort_buffer_size 262144 OLAP Sort Buffer Size
_olap_statbool_corebits 20000000 OLAP Status Boolean max incore bits
_olap_statbool_threshold 8100 OLAP Status Boolean CBM threshold
_olap_table_function_statistics FALSE Specify TRUE to output OLAP table function timed statistics trace
_olap_wrap_errors FALSE Wrap error messages to OLAP outfile
_olapi_history_retention FALSE enable olapi history retention
_olapi_iface_object_history 1000 enable olapi interface object history collection
_olapi_iface_object_history_retention FALSE enable olapi interface object history retention
_olapi_iface_operation_history_retention FALSE enable olapi interface operation history retention
_olapi_interface_operation_history 1000 enable olapi interface operation history collection
_olapi_memory_operation_history 1000 enable olapi memory alloc/free history collection
_olapi_memory_operation_history_pause_at_seqno 0 enable olapi memory alloc/free history collection pausing
_olapi_memory_operation_history_retention FALSE enable olapi memory operation history retention
_olapi_session_history 300 enable olapi session history collection
_olapi_session_history_retention FALSE enable olapi session history retention
_old_connect_by_enabled FALSE enable/disable old connect by
_old_extent_scheme FALSE Revert to old extent allocation
_ols_cleanup_task TRUE Clean up unnecessary entries in OLS sessinfo table
_oltp_comp_dbg_scan 0 oltp compression scan debug
_oltp_compress_dbg 0 oltp compression debug
_oltp_compression TRUE oltp compression enabled
_oltp_compression_gain 10 oltp compression gain
_oltp_spill FALSE spill rows for oltp compression if loader pga limit is exceeded
_omf enabled enable/disable OMF
_omni_enqueue_enable 1 Enable Omni Enqueue feature (0 = disable, 1 = enable on ASM (default),
_one-hundred-and-eighteenth_spare_parameter one-hundred-and-eighteenth spare parameter - string
_one-hundred-and-eighth_spare_parameter one-hundred-and-eighth spare parameter - string
_one-hundred-and-eightieth_spare_parameter FALSE one-hundred-and-eightieth spare parameter - boolean
_one-hundred-and-eighty-eighth_spare_parameter FALSE one-hundred-and-eighty-eighth spare parameter - boolean
_one-hundred-and-eighty-fifth_spare_parameter FALSE one-hundred-and-eighty-fifth spare parameter - boolean
_one-hundred-and-eighty-first_spare_parameter FALSE one-hundred-and-eighty-first spare parameter - boolean
_one-hundred-and-eighty-fourth_spare_parameter FALSE one-hundred-and-eighty-fourth spare parameter - boolean
_one-hundred-and-eighty-ninth_spare_parameter FALSE one-hundred-and-eighty-ninth spare parameter - boolean
_one-hundred-and-eighty-second_spare_parameter FALSE one-hundred-and-eighty-second spare parameter - boolean
_one-hundred-and-eighty-seventh_spare_parameter FALSE one-hundred-and-eighty-seventh spare parameter - boolean
_one-hundred-and-eighty-sixth_spare_parameter FALSE one-hundred-and-eighty-sixth spare parameter - boolean
_one-hundred-and-eighty-third_spare_parameter FALSE one-hundred-and-eighty-third spare parameter - boolean
_one-hundred-and-eleventh_spare_parameter one-hundred-and-eleventh spare parameter - string
_one-hundred-and-fifteenth_spare_parameter one-hundred-and-fifteenth spare parameter - string
_one-hundred-and-fifth_spare_parameter one-hundred-and-fifth spare parameter - string
_one-hundred-and-fiftieth_spare_parameter FALSE one-hundred-and-fiftieth spare parameter - boolean
_one-hundred-and-fifty-eighth_spare_parameter FALSE one-hundred-and-fifty-eighth spare parameter - boolean
_one-hundred-and-fifty-fifth_spare_parameter FALSE one-hundred-and-fifty-fifth spare parameter - boolean
_one-hundred-and-fifty-first_spare_parameter FALSE one-hundred-and-fifty-first spare parameter - boolean
_one-hundred-and-fifty-fourth_spare_parameter FALSE one-hundred-and-fifty-fourth spare parameter - boolean
_one-hundred-and-fifty-ninth_spare_parameter FALSE one-hundred-and-fifty-ninth spare parameter - boolean
_one-hundred-and-fifty-second_spare_parameter FALSE one-hundred-and-fifty-second spare parameter - boolean
_one-hundred-and-fifty-seventh_spare_parameter FALSE one-hundred-and-fifty-seventh spare parameter - boolean
_one-hundred-and-fifty-sixth_spare_parameter FALSE one-hundred-and-fifty-sixth spare parameter - boolean
_one-hundred-and-fifty-third_spare_parameter FALSE one-hundred-and-fifty-third spare parameter - boolean
_one-hundred-and-first_spare_parameter one-hundred-and-first spare parameter - string
_one-hundred-and-fortieth_spare_parameter one-hundred-and-fortieth spare parameter - string list
_one-hundred-and-forty-eighth_spare_parameter FALSE one-hundred-and-forty-eighth spare parameter - boolean
_one-hundred-and-forty-fifth_spare_parameter FALSE one-hundred-and-forty-fifth spare parameter - boolean
_one-hundred-and-forty-first_spare_parameter FALSE one-hundred-and-forty-first spare parameter - boolean
_one-hundred-and-forty-fourth_spare_parameter FALSE one-hundred-and-forty-fourth spare parameter - boolean
_one-hundred-and-forty-ninth_spare_parameter FALSE one-hundred-and-forty-ninth spare parameter - boolean
_one-hundred-and-forty-second_spare_parameter FALSE one-hundred-and-forty-second spare parameter - boolean
_one-hundred-and-forty-seventh_spare_parameter FALSE one-hundred-and-forty-seventh spare parameter - boolean
_one-hundred-and-forty-sixth_spare_parameter FALSE one-hundred-and-forty-sixth spare parameter - boolean
_one-hundred-and-forty-third_spare_parameter FALSE one-hundred-and-forty-third spare parameter - boolean
_one-hundred-and-fourteenth_spare_parameter one-hundred-and-fourteenth spare parameter - string
_one-hundred-and-fourth_spare_parameter one-hundred-and-fourth spare parameter - string
_one-hundred-and-nineteenth_spare_parameter one-hundred-and-nineteenth spare parameter - string
_one-hundred-and-ninetieth_spare_parameter FALSE one-hundred-and-ninetieth spare parameter - boolean
_one-hundred-and-ninety-eighth_spare_parameter FALSE one-hundred-and-ninety-eighth spare parameter - boolean
_one-hundred-and-ninety-fifth_spare_parameter FALSE one-hundred-and-ninety-fifth spare parameter - boolean
_one-hundred-and-ninety-first_spare_parameter FALSE one-hundred-and-ninety-first spare parameter - boolean
_one-hundred-and-ninety-fourth_spare_parameter FALSE one-hundred-and-ninety-fourth spare parameter - boolean
_one-hundred-and-ninety-ninth_spare_parameter FALSE one-hundred-and-ninety-ninth spare parameter - boolean
_one-hundred-and-ninety-second_spare_parameter FALSE one-hundred-and-ninety-second spare parameter - boolean
_one-hundred-and-ninety-seventh_spare_parameter FALSE one-hundred-and-ninety-seventh spare parameter - boolean
_one-hundred-and-ninety-sixth_spare_parameter FALSE one-hundred-and-ninety-sixth spare parameter - boolean
_one-hundred-and-ninety-third_spare_parameter FALSE one-hundred-and-ninety-third spare parameter - boolean
_one-hundred-and-ninth_spare_parameter one-hundred-and-ninth spare parameter - string
_one-hundred-and-second_spare_parameter one-hundred-and-second spare parameter - string
_one-hundred-and-seventeenth_spare_parameter one-hundred-and-seventeenth spare parameter - string
_one-hundred-and-seventh_spare_parameter one-hundred-and-seventh spare parameter - string
_one-hundred-and-seventieth_spare_parameter FALSE one-hundred-and-seventieth spare parameter - boolean
_one-hundred-and-seventy-eighth_spare_parameter FALSE one-hundred-and-seventy-eighth spare parameter - boolean
_one-hundred-and-seventy-fifth_spare_parameter FALSE one-hundred-and-seventy-fifth spare parameter - boolean
_one-hundred-and-seventy-first_spare_parameter FALSE one-hundred-and-seventy-first spare parameter - boolean
_one-hundred-and-seventy-fourth_spare_parameter FALSE one-hundred-and-seventy-fourth spare parameter - boolean
_one-hundred-and-seventy-ninth_spare_parameter FALSE one-hundred-and-seventy-ninth spare parameter - boolean
_one-hundred-and-seventy-second_spare_parameter FALSE one-hundred-and-seventy-second spare parameter - boolean
_one-hundred-and-seventy-seventh_spare_parameter FALSE one-hundred-and-seventy-seventh spare parameter - boolean
_one-hundred-and-seventy-sixth_spare_parameter FALSE one-hundred-and-seventy-sixth spare parameter - boolean
_one-hundred-and-seventy-third_spare_parameter FALSE one-hundred-and-seventy-third spare parameter - boolean
_one-hundred-and-sixteenth_spare_parameter one-hundred-and-sixteenth spare parameter - string
_one-hundred-and-sixth_spare_parameter one-hundred-and-sixth spare parameter - string
_one-hundred-and-sixtieth_spare_parameter FALSE one-hundred-and-sixtieth spare parameter - boolean
_one-hundred-and-sixty-eighth_spare_parameter FALSE one-hundred-and-sixty-eighth spare parameter - boolean
_one-hundred-and-sixty-fifth_spare_parameter FALSE one-hundred-and-sixty-fifth spare parameter - boolean
_one-hundred-and-sixty-first_spare_parameter FALSE one-hundred-and-sixty-first spare parameter - boolean
_one-hundred-and-sixty-fourth_spare_parameter FALSE one-hundred-and-sixty-fourth spare parameter - boolean
_one-hundred-and-sixty-ninth_spare_parameter FALSE one-hundred-and-sixty-ninth spare parameter - boolean
_one-hundred-and-sixty-second_spare_parameter FALSE one-hundred-and-sixty-second spare parameter - boolean
_one-hundred-and-sixty-seventh_spare_parameter FALSE one-hundred-and-sixty-seventh spare parameter - boolean
_one-hundred-and-sixty-sixth_spare_parameter FALSE one-hundred-and-sixty-sixth spare parameter - boolean
_one-hundred-and-sixty-third_spare_parameter FALSE one-hundred-and-sixty-third spare parameter - boolean
_one-hundred-and-tenth_spare_parameter one-hundred-and-tenth spare parameter - string
_one-hundred-and-third_spare_parameter one-hundred-and-third spare parameter - string
_one-hundred-and-thirteenth_spare_parameter one-hundred-and-thirteenth spare parameter - string
_one-hundred-and-thirtieth_spare_parameter one-hundred-and-thirtieth spare parameter - string
_one-hundred-and-thirty-eighth_spare_parameter one-hundred-and-thirty-eighth spare parameter - string list
_one-hundred-and-thirty-fifth_spare_parameter one-hundred-and-thirty-fifth spare parameter - string list
_one-hundred-and-thirty-first_spare_parameter one-hundred-and-thirty-first spare parameter - string list
_one-hundred-and-thirty-fourth_spare_parameter one-hundred-and-thirty-fourth spare parameter - string list
_one-hundred-and-thirty-ninth_spare_parameter one-hundred-and-thirty-ninth spare parameter - string list
_one-hundred-and-thirty-second_spare_parameter one-hundred-and-thirty-second spare parameter - string list
_one-hundred-and-thirty-seventh_spare_parameter one-hundred-and-thirty-seventh spare parameter - string list
_one-hundred-and-thirty-sixth_spare_parameter one-hundred-and-thirty-sixth spare parameter - string list
_one-hundred-and-thirty-third_spare_parameter one-hundred-and-thirty-third spare parameter - string list
_one-hundred-and-twelfth_spare_parameter one-hundred-and-twelfth spare parameter - string
_one-hundred-and-twentieth_spare_parameter one-hundred-and-twentieth spare parameter - string
_one-hundred-and-twenty-eighth_spare_parameter one-hundred-and-twenty-eighth spare parameter - string
_one-hundred-and-twenty-fifth_spare_parameter one-hundred-and-twenty-fifth spare parameter - string
_one-hundred-and-twenty-first_spare_parameter one-hundred-and-twenty-first spare parameter - string
_one-hundred-and-twenty-fourth_spare_parameter one-hundred-and-twenty-fourth spare parameter - string
_one-hundred-and-twenty-ninth_spare_parameter one-hundred-and-twenty-ninth spare parameter - string
_one-hundred-and-twenty-second_spare_parameter one-hundred-and-twenty-second spare parameter - string
_one-hundred-and-twenty-seventh_spare_parameter one-hundred-and-twenty-seventh spare parameter - string
_one-hundred-and-twenty-sixth_spare_parameter one-hundred-and-twenty-sixth spare parameter - string
_one-hundred-and-twenty-third_spare_parameter one-hundred-and-twenty-third spare parameter - string
_one-hundredth_spare_parameter one-hundredth spare parameter - string
_oneside_colstat_for_equijoins TRUE sanity check on default selectivity for like/range predicate
_onl_ddl_progress 3 track progress of online ddl
_onl_pmo_wait_query 0 online pmos wait for queries after swapping partitions
_onl_pmo_wait_timeout 0 online pmos wait for queries after swapping partitions timeout
_online_ctas_diag 0 controls dumping diagnostic information for online ctas
_online_ddl_delay 200 centisecond delay for online DDL to allow cursor recompliation
_online_ddl_domain_index_flags 1 flags for domain indexes during online DDLs
_online_ddl_nowait_delay 25 centisecond delay for nowait lock try during online DDL
_online_direct_load 2 Online Direct Load
_online_file_conversion_aiolimit 8 Online datafile move/conversion async I/O limit
_online_file_conversion_batchsize 64 Online datafile move/conversion sync batchsize
_online_patch_disable_stack_check FALSE disable check for function on stack for online patches
_online_pmo_global_index_flags 0 flags for global indexes during partition maintenance DDLs
_online_pmo_global_index_method CLEANUP ONLY Unique global index method for partition maintenance DDLs
_ops_per_semop the exact number of operations per semop system call
_optim_adjust_for_part_skews TRUE adjust stats for skews across partitions
_optim_dict_stats_at_db_cr_upg TRUE enable/disable dictionary stats gathering at db create/upgrade
_optim_enhance_nnull_detection TRUE TRUE to enable index [fast] full scan more often
_optim_new_default_join_sel TRUE improves the way default equijoin selectivity are computed
_optim_peek_user_binds TRUE enable peeking of user binds
_optimize_dvconfig_cloudpdb FALSE Optimize Database Vault setup for cloud PDB
_optimize_tbsquota_ddl TRUE Optimize tablespace quota for user DDL
_optimized_pdb_open_in_cloud FALSE Optimize PDB Open codepath
_optimizefsio Test env file i/o setting
_optimizer_adaptive_cursor_sharing TRUE optimizer adaptive cursor sharing
_optimizer_adaptive_plan_control 0 internal controls for adaptive plans
_optimizer_adaptive_plans_continuous FALSE enable continuously adaptive plans
_optimizer_adaptive_plans_iterative FALSE enable iterative adaptive plans
_optimizer_adaptive_random_seed 0 random seed for adaptive plans
_optimizer_adjust_for_nulls TRUE adjust selectivity for null values
_optimizer_ads_for_pq FALSE use ADS for parallel queries
_optimizer_ads_max_table_count 0 maximum number of tables in a join under ADS
_optimizer_ads_result_cache_life 3600 result cache shelf life for ADS queries
_optimizer_ads_spd_cache_owner_limit 64 Maximum number of directives under an owner in SPD cache
_optimizer_ads_time_limit 0 maximum time limit (seconds) under ADS
_optimizer_ads_use_partial_results TRUE Use partial results of ADS queries
_optimizer_ads_use_result_cache TRUE use result cache for ADS queries
_optimizer_ads_use_spd_cache TRUE use Sql Plan Directives for caching ADS queries
_optimizer_aggr_groupby_elim TRUE group-by and aggregation elimination
_optimizer_allow_all_access_paths TRUE allow all access paths
_optimizer_ansi_join_lateral_enhance TRUE optimization of left/full ansi-joins and lateral views
_optimizer_ansi_rearchitecture TRUE re-architecture of ANSI left, right, and full outer joins
_optimizer_answering_query_using_stats FALSE enable statistics-based query transformation
_optimizer_autostats_job TRUE enable/disable auto stats collection job
_optimizer_aw_join_push_enabled TRUE Enables AW Join Push optimization
_optimizer_aw_stats_enabled TRUE Enables statistcs on AW olap_table table function
_optimizer_band_join_aware TRUE enable the detection of band join by the optimizer
_optimizer_batch_table_access_by_rowid TRUE enable table access by ROWID IO batching
_optimizer_better_inlist_costing ALL enable improved costing of index access using in-list(s)
_optimizer_block_size 8192 standard block size used by optimizer
_optimizer_bushy_cost_factor 100 cost factor for bushy join
_optimizer_bushy_fact_dim_ratio 20 bushy join dimension to fact ratio
_optimizer_bushy_fact_min_size 100000 minimumm fact size for bushy join
_optimizer_bushy_join off enables bushy join
_optimizer_cache_stats FALSE cost with cache statistics
_optimizer_cartesian_enabled TRUE optimizer cartesian join enabled
_optimizer_cbqt_factor 50 cost factor for cost-based query transformation
_optimizer_cbqt_no_size_restriction TRUE disable cost based transformation query size restriction
_optimizer_cbqt_or_expansion ON enables cost based OR expansion
_optimizer_ceil_cost TRUE CEIL cost in CBO
_optimizer_cluster_by_rowid TRUE enable/disable the cluster by rowid feature
_optimizer_cluster_by_rowid_batch_size 100 Sorting batch size for cluster by rowid feature
_optimizer_cluster_by_rowid_batched TRUE enable/disable the cluster by rowid batching feature
_optimizer_cluster_by_rowid_control 129 internal control for cluster by rowid feature mode
_optimizer_coalesce_subqueries TRUE consider coalescing of subqueries optimization
_optimizer_compare_plans_control 0 compare plans controls for testing
_optimizer_complex_pred_selectivity TRUE enable selectivity estimation for builtin functions
_optimizer_compute_index_stats TRUE force index stats collection on index creation/rebuild
_optimizer_connect_by_cb_whr_only FALSE use cost-based transformation for whr clause in connect by
_optimizer_connect_by_combine_sw TRUE combine no filtering connect by and start with
_optimizer_connect_by_cost_based TRUE use cost-based transformation for connect by
_optimizer_connect_by_elim_dups TRUE allow connect by to eliminate duplicates from input
_optimizer_control_shard_qry_processing 65280 control shard query processing
_optimizer_correct_sq_selectivity TRUE force correct computation of subquery selectivity
_optimizer_cost_based_transformation LINEAR enables cost-based query transformation
_optimizer_cost_filter_pred FALSE enables costing of filter predicates in IO cost model
_optimizer_cost_hjsmj_multimatch TRUE add cost of generating result set when #rows per key > 1
_optimizer_cost_model CHOOSE optimizer cost model
_optimizer_cube_join_enabled TRUE enable cube join
_optimizer_db_blocks_buffers 0 optimizer value for _db_blocks_buffers
_optimizer_degree 0 force the optimizer to use the same degree of parallelism
_optimizer_diag_stats TRUE enable/disable populating stats diagnosis tables
_optimizer_dim_subq_join_sel TRUE use join selectivity in choosing star transformation dimensions
_optimizer_disable_strans_sanity_checks 0 disable star transformation sanity checks
_optimizer_distinct_agg_transform TRUE Transforms Distinct Aggregates to non-distinct aggregates
_optimizer_distinct_elimination TRUE Eliminates redundant SELECT DISTNCT's
_optimizer_distinct_placement TRUE consider distinct placement optimization
_optimizer_dsdir_usage_control 0 controls optimizer usage of dynamic sampling directives
_optimizer_dyn_smp_blks 32 number of blocks for optimizer dynamic sampling
_optimizer_eliminate_filtering_join TRUE optimizer filtering join elimination enabled
_optimizer_eliminate_subquery TRUE consider elimination of subquery optimization
_optimizer_enable_density_improvements TRUE use improved density computation for selectivity estimation
_optimizer_enable_extended_stats TRUE use extended statistics for selectivity estimation
_optimizer_enable_plsql_stats TRUE Use statistics of plsql functions
_optimizer_enable_table_lookup_by_nl TRUE consider table lookup by nl transformation
_optimizer_enhanced_filter_push TRUE push filters before trying cost-based query transformation
_optimizer_enhanced_join_elimination TRUE Enhanced(12.2) join elimination
_optimizer_exists_to_any_rewrite TRUE consider exists-to-any rewrite of subqueries
_optimizer_extend_jppd_view_types TRUE join pred pushdown on group-by, distinct, semi-/anti-joined view
_optimizer_extended_cursor_sharing UDO optimizer extended cursor sharing
_optimizer_extended_cursor_sharing_rel SIMPLE optimizer extended cursor sharing for relational operators
_optimizer_extended_stats_usage_control 192 controls the optimizer usage of extended stats
_optimizer_external_table_cache TRUE perform external table cache transform
_optimizer_false_filter_pred_pullup TRUE optimizer false predicate pull up transformation
_optimizer_fast_access_pred_analysis TRUE use fast algorithm to traverse predicates for physical optimizer
_optimizer_fast_pred_transitivity TRUE use fast algorithm to generate transitive predicates
_optimizer_feedback_control controls the optimizer feedback framework
_optimizer_filter_pred_pullup TRUE use cost-based flter predicate pull up transformation
_optimizer_filter_pushdown TRUE enable/disable filter predicate pushdown
_optimizer_fkr_index_cost_bias 10 Optimizer index bias over FTS/IFFS under first K rows mode
_optimizer_force_CBQT force CBQT transformation regardless of cost
_optimizer_force_error_CBQT force assert within a CBQT transformation
_optimizer_force_error_hash force assert if hash of the error message equal to the parameter
_optimizer_force_error_state force assert in init phase, final phase or a candidate state
_optimizer_free_transformation_heap TRUE free transformation subheap after each transformation
_optimizer_full_outer_join_to_outer TRUE enable/disable full outer to left outer join conversion
_optimizer_gather_feedback TRUE optimizer gather feedback
_optimizer_gather_stats_on_conventional_config 0 settings for optimizer online stats gathering on conventional DML
_optimizer_gather_stats_on_conventional_dml FALSE optimizer online stats gathering for conventional DML
_optimizer_gather_stats_on_load TRUE enable/disable online statistics gathering
_optimizer_gather_stats_on_load_all FALSE enable/disable online statistics gathering for nonempty segments
_optimizer_gather_stats_on_load_hist FALSE enable/disable online histogram gathering for loads
_optimizer_gather_stats_on_load_index TRUE enable/disable online index stats gathering for loads
_optimizer_generate_ptf_implied_preds TRUE Generate implied predicates for PTF
_optimizer_generate_transitive_pred TRUE optimizer generate transitive predicates
_optimizer_group_by_placement TRUE consider group-by placement optimization
_optimizer_hll_entry 4096 number of entries in hll hash table
_optimizer_hybrid_fpwj_enabled TRUE enable hybrid full partition-wise join when TRUE
_optimizer_improve_selectivity TRUE improve table and partial overlap join selectivity computation
_optimizer_inmemory_access_path TRUE optimizer access path costing for in-memory
_optimizer_inmemory_autodop TRUE optimizer autoDOP costing for in-memory
_optimizer_inmemory_bloom_filter TRUE controls serial bloom filter for in-memory tables
_optimizer_inmemory_capture_stored_stats TRUE optimizer capture and store statistics for in-memory tables
_optimizer_inmemory_cluster_aware_dop TRUE Affinitize DOP for inmemory objects
_optimizer_inmemory_gen_pushable_preds TRUE optimizer generate pushable predicates for in-memory
_optimizer_inmemory_minmax_pruning TRUE controls use of min/max pruning for costing in-memory tables
_optimizer_inmemory_pruning_ratio_rows 100 in-memory pruning ratio for # rows (% of rows remaining after pruning)
_optimizer_inmemory_quotient 0 in-memory quotient (% of rows in in-memory format)
_optimizer_inmemory_table_expansion TRUE optimizer in-memory awareness for table expansion
_optimizer_inmemory_use_stored_stats AUTO optimizer use stored statistics for in-memory tables
_optimizer_instance_count 0 force the optimizer to use the specified number of instances
_optimizer_interleave_jppd TRUE interleave join predicate pushdown during CBQT
_optimizer_interleave_or_expansion TRUE interleave OR Expansion during CBQT
_optimizer_invalidation_period 18000 time window for invalidation of cursors of analyzed objects
_optimizer_ivf_iteration FALSE return all K rows using IVF multiple iteration
_optimizer_ivf_postfilter_rows 0 number of rows for IVF post-filter
_optimizer_join_elimination_enabled TRUE optimizer join elimination enabled
_optimizer_join_factorization TRUE use join factorization transformation
_optimizer_join_order_control 3 controls the optimizer join order search algorithm
_optimizer_join_sel_sanity_check TRUE enable/disable sanity check for multi-column join selectivity
_optimizer_key_vector_aggr_factor 75 the required aggregation between IJK and DGK
_optimizer_key_vector_payload TRUE enables or disables dimension payloads in vector transform
_optimizer_key_vector_payload_dim_aggs TRUE enables or disables dimension payloading of aggregates in VT
_optimizer_key_vector_pruning_enabled TRUE enables or disables key vector partition pruning
_optimizer_key_vector_use_max_size 1048576 maximum key vector use size (in KB)
_optimizer_max_permutations 300 optimizer maximum join permutations per query block
_optimizer_min_cache_blocks 10 set minimum cached blocks
_optimizer_mjc_enabled TRUE enable merge join cartesian
_optimizer_mode_force TRUE force setting of optimizer mode for user recursive SQL also
_optimizer_multi_level_push_pred TRUE consider join-predicate pushdown that requires multi-level pushdown to
_optimizer_multi_table_outerjoin TRUE allows multiple tables on the left of outerjoin
_optimizer_multicol_join_elimination TRUE eliminate multi-column key based joins
_optimizer_multiple_cenv generate and run plans using several compilation environments
_optimizer_multiple_cenv_report result control what to report in trace file when run in multi-plan mode
_optimizer_multiple_cenv_stmt query control the types of statements that are run in multi-plan mode
_optimizer_native_full_outer_join FORCE execute full outer join using native implementaion
_optimizer_nested_loop_join on favor/unfavor nested loop join
_optimizer_nested_rollup_for_gset 100 number of groups above which we use nested rollup exec for gset
_optimizer_new_join_card_computation TRUE compute join cardinality using non-rounded input values
_optimizer_nlj_hj_adaptive_join TRUE allow adaptive NL Hash joins
_optimizer_non_blocking_hard_parse TRUE enable non-blocking hard parse
_optimizer_null_accepting_semijoin TRUE enables null-accepting semijoin
_optimizer_null_aware_antijoin TRUE null-aware antijoin parameter
_optimizer_or_expansion DEPTH control or expansion approach used
_optimizer_or_expansion_subheap TRUE Use subheap for optimizer or-expansion
_optimizer_order_by_elimination_enabled TRUE Eliminates order bys from views before query transformation
_optimizer_outer_join_to_inner TRUE enable/disable outer to inner join conversion
_optimizer_outer_to_anti_enabled TRUE Enable transformation of outer-join to anti-join if possible
_optimizer_partial_join_eval TRUE partial join evaluation parameter
_optimizer_percent_parallel 101 optimizer percent parallel
_optimizer_performance_feedback OFF controls the performance feedback
_optimizer_proc_rate_level BASIC control the level of processing rates
_optimizer_proc_rate_source DEFAULT control the source of processing rates
_optimizer_purge_stats_iteration_row_count 10000 number of rows to be deleted at each iteration of the stats
_optimizer_push_down_distinct 0 push down distinct from query block to table
_optimizer_push_gby_into_union_all TRUE consider pushing down group-by into union-all branches
_optimizer_push_pred_cost_based TRUE use cost-based query transformation for push pred optimization
_optimizer_random_plan 0 optimizer seed value for random plans
_optimizer_reduce_groupby_key TRUE group-by key reduction
_optimizer_reuse_cost_annotations TRUE reuse cost annotations during cost-based query transformation
_optimizer_rownum_bind_default 10 Default value to use for rownum bind
_optimizer_rownum_pred_based_fkr TRUE enable the use of first K rows due to rownum predicate
_optimizer_save_stats TRUE enable/disable saving old versions of optimizer stats
_optimizer_search_limit 5 optimizer search limit
_optimizer_secure_view_merging TRUE optimizer secure view merging and predicate pushdown/movearound
_optimizer_self_induced_cache_cost FALSE account for self-induced caching
_optimizer_skip_scan_enabled TRUE enable/disable index skip scan
_optimizer_skip_scan_guess FALSE consider index skip scan for predicates with guessed selectivity
_optimizer_sortmerge_join_enabled TRUE enable/disable sort-merge join method
_optimizer_sortmerge_join_inequality TRUE enable/disable sort-merge join using inequality predicates
_optimizer_squ_bottomup TRUE enables unnesting of subquery in a bottom-up manner
_optimizer_star_tran_in_with_clause TRUE enable/disable star transformation in with clause queries
_optimizer_star_trans_min_cost 0 optimizer star transformation minimum cost
_optimizer_star_trans_min_ratio 0 optimizer star transformation minimum ratio
_optimizer_starplan_enabled TRUE optimizer star plan enabled
_optimizer_stats_coll_max_buffer_size 8 max buffer size of statistics collector rowsource
_optimizer_stats_on_conventional_dml_sample_rate 100 sampling rate for online stats gathering on conventional DML
_optimizer_strans_adaptive_pruning TRUE allow adaptive pruning of star transformation bitmap trees
_optimizer_subsume_vw_sq ON consider subsumption of views or subqueries
_optimizer_synopsis_min_size 2 minimal synopsis size (kb)
_optimizer_system_stats_usage TRUE system statistics usage
_optimizer_table_expansion TRUE consider table expansion transformation
_optimizer_trace none optimizer trace parameter
_optimizer_track_hint_usage TRUE enable tracking of optimizer hint usage
_optimizer_transitivity_retain TRUE retain equi-join pred upon transitive equality pred generation
_optimizer_try_st_before_jppd TRUE try Star Transformation before Join Predicate Push Down
_optimizer_undo_changes FALSE undo changes to query optimizer
_optimizer_undo_cost_change 23.1.0 optimizer undo cost change
_optimizer_union_all_gsets TRUE Use Union All Optimization for Grouping Sets
_optimizer_unnest_all_subqueries TRUE enables unnesting of every type of subquery
_optimizer_unnest_corr_set_subq TRUE Unnesting of correlated set subqueries (TRUE/FALSE)
_optimizer_unnest_disjunctive_subq TRUE Unnesting of disjunctive subqueries (TRUE/FALSE)
_optimizer_unnest_scalar_sq TRUE enables unnesting of of scalar subquery
_optimizer_unnest_update_set_subq on enables unnesting of subquery in set for update
_optimizer_use_auto_indexes AUTO Use Auto Index
_optimizer_use_cbqt_star_transformation TRUE use rewritten star transformation using cbqt framework
_optimizer_use_feedback TRUE optimizer use feedback
_optimizer_use_feedback_for_join FALSE optimizer use feedback for join
_optimizer_use_gtt_session_stats TRUE use GTT session private statistics
_optimizer_use_histograms TRUE enable/disable the usage of histograms by the optimizer
_optimizer_use_stats_models FALSE use optimizer statistics extrapolation models
_optimizer_use_stats_on_conventional_config 0 settings for optimizer usage of online stats on conventional DML
_optimizer_use_stats_on_conventional_dml FALSE use optimizer statistics gathered for conventional DML
_optimizer_use_subheap TRUE Enables physical optimizer subheap
_optimizer_use_table_scanrate HADOOP_ONLY Use Table Specific Scan Rate
_optimizer_use_xt_rowid TRUE Use external table rowid
_optimizer_vector_base_dim_fact_factor 200 cost based vector transform base dimension to base fact ratio
_optimizer_vector_cost_adj 100 cost adjustment for vector aggregation processing estimates
_optimizer_vector_fact_dim_ratio 10 cost based vector transform dimension to fact ratio
_optimizer_vector_fact_payload_ratio 20 cost based vector transform payload dimension to fact ratio
_optimizer_vector_index ON consider transformation for vector index (HNSW and IVF
_optimizer_vector_index_covering_columns TRUE use covering columns during vector index transformation
_optimizer_vector_min_fact_rows 10000000 min number of rows required for vector aggregation transform
_optimizer_vector_transformation TRUE perform vector transform
_optimizer_wc_filter_pushdown TRUE enable/disable with clause filter predicate pushdown
_or_expand_nvl_predicate TRUE enable OR expanded plan for NVL/DECODE predicate
_oracle_employee_testing FALSE Switch on all features for the purpose of testing
_oracle_script FALSE Running an Oracle-supplied script
_oracle_script_counter 0 Helper parameter to set the value of _oracle_script counter
_oracle_special_license_1_granted FALSE Oracle internal parameter
_oradbg_pathname path of oradbg script
_oradebug_cmds_at_startup oradebug commands to execute at instance startup
_oradebug_force FALSE force target processes to execute oradebug commands?
_ordered_nested_loop TRUE enable ordered nested loop costing
_ordered_semijoin TRUE enable ordered semi-join subquery
_orph_cln_interval 1200 qmon periodic interval for removed subscriber messages cleanup
_os_nice_high 10 OS high nice level
_os_nice_highest 0 OS highest nice level
_os_nice_low 30 OS low nice level
_os_nice_lowest 39 OS lowest nice level
_os_nice_normal 20 OS normal nice level
_os_sched_high_priority 1 OS high priority level
_os_sched_highest_priority 1 OS highest priority level
_os_sched_low_priority 1 OS low priority level
_os_sched_lowest_priority 1 OS lowest priority level
_os_sched_normal_priority 1 OS normal priority level
_os_sched_use_nice TRUE With this set to TRUE, the scheduling policy will be SCHED_OTHER as a
_oscpurm_bg_shr_scale_factor 4 OSCPURM background share scale factor
_oss_skgxp_udp_dynamic_credit_mgmt OSSLIB set dynamic credit for SKGXP-UDP
_other_wait_event_exclusion exclude event names from _other_wait_threshold calculations
_other_wait_threshold 0 threshold wait percentage for event wait class Other
_outline_bitmap_tree TRUE BITMAP_TREE hint enabled in outline
_override_datafile_encrypt_check FALSE if TRUE, override datafile tablespace encryption cross check
_parallel_adaptive_max_users 4 maximum number of users running with default DOP
_parallel_blackbox_enabled TRUE parallel execution blackbox enabled
_parallel_blackbox_sga TRUE true if blackbox will be allocated in SGA, false if PGA
_parallel_blackbox_size 16384 parallel execution blackbox bucket size
_parallel_broadcast_enabled TRUE enable broadcasting of small inputs to hash and sort merge joins
_parallel_cluster_cache_pct 80 max percentage of the global buffer cache to use for affinity
_parallel_cluster_cache_policy ADAPTIVE policy used for parallel execution on cluster(ADAPTIVE/CACHED)
_parallel_conservative_queuing FALSE conservative parallel statement queuing
_parallel_ctas_enabled TRUE enable/disable parallel CTAS operation
_parallel_default_max_instances 1 default maximum number of instances for parallel query
_parallel_execution_message_align FALSE Alignment of PX buffers to OS page boundary
_parallel_fake_class_pct 0 fake db-scheduler percent used for testing
_parallel_fault_tolerance_enabled FALSE enables or disables fault-tolerance for parallel statement
_parallel_fault_tolerance_threshold 3 total number of faults fault-tolerance will handle
_parallel_fixwrite_bucket 1000 Number of buckets for each round of fix write
_parallel_frz_step_reconfig 0 parallel rs work for freeze step for instance reconfig.
_parallel_heartbeat_snapshot_interval 2 interval of snapshot to track px msging between instances
_parallel_heartbeat_snapshot_max 128 maximum number of historical snapshots archived
_parallel_inmemory_min_time_threshold AUTO threshold above which a plan is a candidate for parallelization for in
_parallel_inmemory_time_unit 1 unit of work used to derive the degree of parallelism for in-memory ta
_parallel_lmd_reconfig 1 parallel lmd work in reconfiguration for enqueues.
_parallel_load_bal_unit 0 number of threads to allocate per instance
_parallel_load_balancing TRUE parallel execution load balanced slave allocation
_parallel_load_publish_threshold 10 diffrence in percentage controlling px load propagation
_parallel_log_write_cleanup TRUE Perform (null) log write cleanup in parallel
_parallel_min_message_pool 491520 minimum size of shared pool memory to reserve for pq servers
_parallel_optimization_phase_for_local FALSE parallel optimization phase when all slaves are local
_parallel_queuing_max_waitingtime parallel statement queuing: max waiting time in queue
_parallel_recovery_stopat 32767 stop at -position- to step through SMON
_parallel_replay_msg_limit 4000 Number of messages for each round of parallel replay
_parallel_scalability 50 Parallel scalability criterion for parallel execution
_parallel_server_idle_time 30000 idle time before parallel query server dies (in 1/100 sec)
_parallel_server_memory_threshold 0 max memory threshold for idle PX server to exit
_parallel_server_resiliency 0 enable resilient execution of parallel query
_parallel_server_sleep_time 1 sleep time between dequeue timeouts (in 1/100ths)
_parallel_slave_acquisition_wait 1 time(in seconds) to wait before retrying slave acquisition
_parallel_statement_queuing FALSE parallel statement queuing enabled
_parallel_syspls_obey_force TRUE TRUE to obey force parallel query/dml/ddl under System PL/SQL
_parallel_time_unit 10 unit of work used to derive the degree of parallelism (in seconds)
_parallel_txn_global FALSE enable parallel_txn hint with updates and deletes
_parallelism_cost_fudge_factor 350 set the parallelism cost fudge factor
_parameter_spfile_sync FALSE SPFILE sync mode
_parameter_table_block_size 2048 parameter table block size
_parquet_max_int_file_size 33554432 Max size of intermediate file in a single write
_parquet_tot_int_file_size 536870912 Total size of intermediate file for export data parquet
_part_layer_performance_trace 0 diagnostic improvements for performence issues
_part_redef_global_index_update TRUE online partition redefinition update global indexes
_partial_comp_enabled TRUE partial table compression enabled
_partial_log_preserve_space TRUE use only required space for partial archive logs
_partial_pwise_join_enabled TRUE enable partial partition-wise join when TRUE
_partition_advisor_srs_active true enables sampling based partitioning validation
_partition_by_con_name FALSE enable partitioning by con$name
_partition_by_expression TRUE allow partition by expression
_partition_cdb_view_enabled TRUE partitioned cdb view evaluation enabled
_partition_key_errmsg_limit 128 limit on the partition key string included in error messages
_partition_key_errtrc_limit 16384 limit on the partition key string written to trace file
_partition_large_extents TRUE Enables large extent allocation for partitioned tables
_partition_read_only TRUE bypass all read only check for partition
_partition_view_enabled TRUE enable/disable partitioned views
_partn_blackbox_size 16384 partitioning blackbox bucket size
_passwordfile_enqueue_timeout 900 password file enqueue timeout in seconds
_path_prefix_create_dir TRUE Create path in file system for CREATE DIRECTORY with PATH_PREFIX
_path_prefix_override_dir Override directory for PATH_PREFIX in PDB
_pbkdf2_sder_count 3 The PBKDF2 count to use for session key derivation
_pct_refresh_double_count_prevented TRUE materialized view PCT refreshes avoid double counting
_pdb_auto_save_state FALSE Save pdb state automatically on state change on a given instance
_pdb_auto_undots_create_off FALSE disable automatic creation of undo tablespace in local undo mode
_pdb_char_set_intconv FALSE Enforce internal_convert for PDB character set conversion
_pdb_clone_preserve_guid FALSE Use same guid for a pdb clone
_pdb_close_force_kill_session 1 Force kill sessions during PDB close
_pdb_close_immediate_kill_batchsize 1000 batch size for killing sessions inside the PDB
_pdb_cluster_database TRUE This parameter can be turned-off when cluster_database is TRUE
_pdb_component_violation_restricted Components allowed to have mismatch between CDB$Root and PDB
_pdb_create_use_sysoper_conn FALSE spread file copy slaves across instances
_pdb_datapatch_violation_restricted TRUE Open pdb in restricted mode for datapatch error violation
_pdb_exclude_tablespace_for_metaclone Internally exclude tablespaces for metadata refresh clones
_pdb_failure_testing 0 Testing failure in pluggable database related operations
_pdb_file_copy_affinitize FALSE spread file copy slaves across instances
_pdb_file_copy_buffers 8 number of buffers to use for pdb file copy
_pdb_first_script FALSE Running a script that is PDB-first/ROOT-last
_pdb_force_cfd FALSE Force DB_CREATE_FILE_DEST path for all datafiles in PDB
_pdb_hash_table_latches 16 number of PDB hash table latches
_pdb_hash_table_size 255 number of buckets in PDB hash table
_pdb_hybrid_read_only FALSE Hybrid read only mode allows CDB common user to patch the PDB
_pdb_ignore_table_clauses TRUE Ignore subset of clauses in CREATE TABLE and ALTER TABLE
_pdb_inherit_cfd FALSE Automatically enable CREATE_FILE_DEST clause in the PDB
_pdb_isolation_class NONE PDB isolation level: NONE, HIGH or MAX
_pdb_ktg_buffer_size 16 KTG buffer size (in KB) to store inmemory traces
_pdb_ldp_cascade 0 pluggable database lockdown profile cascade param
_pdb_lifespan_callout PL SQL Procedure to import lifespan
_pdb_live_replay_bind_table cloud table name to record bind info
_pdb_live_replay_error_table table name to record error info
_pdb_live_replay_sess_table cloud table name to record session info
_pdb_live_replay_stmt_table cloud table name to record statement info
_pdb_live_replay_temp_table table name to record temp info
_pdb_local_undo_tablespace_init_size 100000000 Initial size for undo tablespace
_pdb_lockdown_bypass_sr 0 special run lockdown parameter
_pdb_lockdown_ddl_clauses 0 pluggable database lockdown clauses for statements
_pdb_lockdown_error_message FALSE Enable pdb lockdown specific error message
_pdb_lrg_auto_undots_create FALSE enable automatic creation of undo tablespace in local undo mode
_pdb_mask_cdb_info FALSE Enable masking CDB information within a PDB
_pdb_max_audit_size 0 Default value for MAX_AUDIT_SIZE property in new PDB creation
_pdb_max_diag_size 0 Default value for MAX_DIAG_SIZE property in new PDB creation
_pdb_max_size_discount 10 Discount percentable on PDB Max space usage
_pdb_media_rcv_parallelism 0 PDB media recovery parallelism
_pdb_name_case_sensitive FALSE Keeps PDB name case sensitive
_pdb_oper_trace_threshold 600 PDB operations timing trace threshold
_pdb_oper_trace_threshold_softassert FALSE PDB operations timing threshold soft assert
_pdb_read_only_refresh FALSE allow refresh when pdb is open r/o
_pdb_refresh_apply_master_key_rekey TRUE Apply master rekey marker during pdb refresh
_pdb_refresh_log_info_callout PL SQL Procedure to get log info
_pdb_refresh_quiesce_use_restricted_open FALSE open source in restricted mode during ref clone activation
_pdb_refresh_remote_logs_baseuri Location of archive logs to use for pdb refresh
_pdb_refresh_remote_logs_path Location of archive logs to use for pdb refresh
_pdb_refresh_remote_logs_trackdb Location of json trackdb for scn->seq# mapping
_pdb_refresh_restrict_until_point FALSE restrict until scn/time for pdb refresh
_pdb_refresh_scn_to_seq_exttbl external table name to use convert scn to thread#,seq#
_pdb_refresh_temp_files_autoextend_size 104857600 refreshable clones temp files autoextend size
_pdb_refresh_use_dblink_to_catalog FALSE Use central catalog for pdb refresh
_pdb_refresh_use_local_logs TRUE Use local logs for pdb refresh
_pdb_relocate_read_only_open TRUE Open PDB is read only mode during a PDB Relocate
_pdb_replay_param_allowlist pdb replay parameter allow list
_pdb_replay_param_blocklist pdb replay parameter block list
_pdb_replay_param_mode DISABLED pdb replay parameter mode
_pdb_seed_mcsc FALSE Allow PDB SEED to have different character set than the CDB.
_pdb_service_name_convert service name convert patterns and strings for per PDB clone
_pdb_service_on_root_listener FALSE pdb services on CDB ROOT listeners
_pdb_skiplist_apply_callout PL SQL Procedure name to import skiplist
_pdb_skiplist_redogen_callout PL SQL Procedure name to export skiplist
_pdb_skiplist_rfsgen_callout PL SQL Procedure name to export skiplist in rfs setup
_pdb_small_table_threshold 20 lower threshold level of table size for direct reads in a pdb
_pdb_strict_plugin_compat FALSE Pluggable database strict plugin compatibility
_pdb_transition_clean_bg_delay 0 delay in GEN0 to transition PDB to clean state
_pdb_trigger_user user to execute pdb trigger
_pdb_use_sequence_cache TRUE Use sequence cache in PDB mode
_pdb_vm_max_size PDB SGA maximum virtual memory size
_pdbopen_fixedtablestats FALSE gather fixed table stats at PDB open
_pdc_adaptive FALSE pmem direct commit adaptively determine percent of ORL-only txns
_pdc_adaptive_evaluation_delta 10 pmem direct commit adaptive txn eval. delta
_pdc_adaptive_evaluation_duration 10 pmem direct commit adaptive adaptive eval. duration (percent)
_pdc_adaptive_evaluation_interval 60 pmem direct commit adaptive adaptive eval. interval (in seconds)
_pdc_adaptive_evaluation_margin 5 pmem direct commit adaptive txn evaluation margin
_pdc_adaptive_evaluation_successes 2 pmem direct commit adaptive txn eval. successes
_pdc_concurrency 16 pmem direct commit concurrency
_pdc_file_clear FALSE clear pmem direct commit file when redo thread is opened
_pdc_imu_pct 0 percentage of IMU ORL-only transactions
_pdc_imud_flush TRUE flush an imu txn's downgrade redo immediately
_pdc_inst_bocs 1 number of per-instance persistent memory log buffer bocs
_pdc_max_mirrors 2 max number of pmem direct commit mirrors
_pdc_min_mirrors 2 min number of pmem direct commit file mirrors
_pdc_msrdma TRUE enable pmem direct commit msrdma
_pdc_non_imu_pct 0 percentage of non-IMU ORL-only transactions
_pdc_plb_stealing TRUE enable pmem direct commit plb stealing
_pdc_ptn_unit_size 65536 pmem direct commit file ptn unit size
_pdc_read_full_ptn FALSE read entire pmem direct commit file ptn when resilvering
_pdc_reconfig_interval 30 How long RECO waits before strand file mirror reconfig check (min)
_pdc_remove_all_files 0 remove PMEM strand files during mount
_pdc_resilver TRUE enable resilvering of online log from pmem direct commit file
_pdc_resilver_single FALSE create a single strand lwn during resilvering from pmem
_pdc_simulation FALSE allow a simulated pmem direct commit file
_pdc_test_hook 0 pmem direct commit testing hook
_pdc_txn_time 5 max time in seconds before a txn logs redo only to the online log
_pdc_units_per_ptn 4 pmem direct commit file units per ptn
_pdc_use_partnership_map TRUE enable partnership map for mirror placement
_pdml_gim_sampling 5000 control separation of global index maintenance for PDML
_pdml_gim_staggered FALSE slaves start on different index when doing index maint
_pdml_slaves_diff_part TRUE slaves start on different partition when doing index maint
_percent_flashback_buf_partial_full 50 Percent of flashback buffer filled to be considered partial full
_pga_aggregate_xmem_limit 0 limit of aggregate PGA XMEM memory consumed by the instance
_pga_auto_snapshot_percentage 20 percent growth of PGA memory for additional snapshots
_pga_auto_snapshot_threshold 524288000 bytes of PGA memory in one process to trigger detail snapshot
_pga_in_sga_param1 pga in sga param1
_pga_in_sga_param2 pga in sga param2
_pga_in_sga_param3 pga in sga param4
_pga_in_sga_param4 pga in sga param4
_pga_in_sga_param5 pga in sga param4
_pga_incident_app_usage_perc 75 suppress PGA limit incidents if app use above this percent
_pga_large_extent_size 1048576 PGA large extent size
_pga_limit_check_wait_time 1000000 microseconds to wait for over limit confirmation
_pga_limit_dump_summary TRUE dump PGA summary when signalling ORA-4036
_pga_limit_interrupt_smaller FALSE whether to interrupt smaller eligible processes
_pga_limit_min_req_size 4194304 bytes of PGA usage below which process will not get ORA-4036
_pga_limit_per_process_minimum 3145728 pga_aggregate_limit per-process minimum
_pga_limit_physmem_perc 90 default percent of physical memory for pga_aggregate_limit and SGA
_pga_limit_simulated_physmem_size 0 bytes of physical memory to determine pga_aggregate_limit with
_pga_limit_target_perc 200 default percent of pga_aggregate_target for pga_aggregate_limit
_pga_limit_time_to_interrupt 2 seconds to wait until direct interrupt
_pga_limit_time_until_idle 15 seconds to wait before treating process as idle
_pga_limit_time_until_killed 30 seconds to wait before killing session over limit
_pga_limit_tracing 0 trace pga_aggregate_limit activity
_pga_limit_use_immediate_kill TRUE use immediate kill for sessions over limit
_pga_limit_watch_perc 50 percentage of limit to have processes watch
_pga_limit_watch_size 104857600 bytes of PGA usage at which process will begin watching limit
_pga_max_size 497848320 Maximum size of the PGA memory for one process
_pgactx_cap_stacks FALSE capture stacks for setting pgactx
_pin_time_statistics FALSE if TRUE collect statistics for how long a current pin is held
_pivot_implementation_method CHOOSE pivot implementation method
_pkt_enable FALSE enable progressive kill test
_pkt_pmon_interval 50 PMON process clean-up interval (cs)
_pkt_start FALSE start progressive kill test instrumention
_plan_outline_data TRUE explain plan outline data enabled
_plan_verify_absolute_margin 100000 Absolute performance criterion for evolving plan baselines
_plan_verify_improvement_margin 150 Performance improvement criterion for evolving plan baselines
_plcmnt_template_svc_name service placement template name
_plsql_anon_block_code_type INTERPRETED PL/SQL anonymous block code-type
_plsql_bypass_strict_semantics FALSE Bypass PL/SQL semantics to resolve 2-part name as schema.type after pa
_plsql_cache_enable TRUE PL/SQL Function Cache Enabled
_plsql_dump_buffer_events conditions upon which the PL/SQL circular buffer is dumped
_plsql_icd_arg_dump FALSE Dump arguments to ICD
_plsql_max_frame_count 0 PL/SQL maximum call nesting depth
_plsql_max_stack_size 0 PL/SQL maximum stack size
_plsql_minimum_cache_hit_percent 20 plsql minimum cache hit percentage required to keep caching active
_plsql_native_frame_threshold 4294967294 Allocate PL/SQL native frames on the heap if size exceeds this value
_plsql_nvl_optimize FALSE PL/SQL NVL optimize
_plsql_release_pin_within_call 0 release pin on called unit before top call completes
_plsql_share_instantiation TRUE PL/SQL share kgscc for same SQL executed at multiple locations
_pluggable_database_debug 0 Debug flag for pluggable database related operations
_pmem_exchange_cold_victim_threshold 0 worthy touch count threshold for a victim buffer to be exchanged into
_pmem_small_table_threshold 20 lower threshold of PMEM table size as percentage to PMEM cache for dir
_pmemfs_alloc_dataptrs 1 Set PMEMfs to preallocate inode tree
_pmemfs_enable_spacetracking FALSE Enable PMEMfs Space Accounting Checks
_pmemfs_shrink_level 0 Enable pmemstore shrink
_pmemfs_smallfile_threshold 1024 Block count threshold for metedata
_pmon_cleanup_max_dfs 100 max dfs elements during cleanup
_pmon_dead_blkrs_alive_chk_rate_secs 3 rate to check blockers are alive during cleanup (in seconds)
_pmon_dead_blkrs_max_blkrs 50 max blockers to check during cleanup
_pmon_dead_blkrs_max_cleanup_attempts 5 max attempts per blocker while checking dead blockers
_pmon_dead_blkrs_scan_rate_secs 3 rate to scan for dead blockers during cleanup (in seconds)
_pmon_enable_dead_blkrs TRUE look for dead blockers during PMON cleanup
_pmon_exitnfy_enabled FALSE PMON Exit notification enabled
_pmon_idle_scan_interval 60 PMON idle scan interval (in seconds)
_pmon_incr_slaves 3 PMON cleanup: slave increment
_pmon_load_constants 300,192,64,3,10,10,0 server load balancing constants (S,P,D,I,L,C,M)
,0
_pmon_max_consec_posts 5 PMON max consecutive posts in main loop
_pmon_max_slaves 10 Maximum number of PMON slaves
_pmon_min_slaves 1 Minimum number of PMON slaves
_pmon_mutex_cleanup 1 PMON cleanup: mutex option
_pmon_new_slave_secs 30 PMON cleanup: new slave (in seconds)
_pmon_slave_stop_secs 60 PMON cleanup: slave stop limit (in seconds)
_pmon_slaves_arr_size 160 Array size for PMON slaves
_pmon_trees_per_slave 10 PMON cleanup: trees per slave
_port_internal_gateway 0 port number of Net Listener on Internal Gateway host
_posix_spawn_enabled TRUE posix_spawn enabled
_post_multiple_shared_waiters TRUE Post multiple shared waiters of a latch
_post_run_job_evaluation FALSE Control if jobs should evaluate at end of execution
_post_wait_queues_num_per_class Post Wait Queues - Num Per Class
_pq_numa_working_set_affinity TRUE if TRUE, enable pq slave NUMA affinity
_pqq_debug_txn_act FALSE pq queuing transaction active
_pqq_enabled TRUE Enable Resource Manager based Parallel Statement Queuing
_pqq_pdb_load_publish_threshold 0 difference in percentage controlling PDB load publish
_pre_rewrite_push_pred TRUE push predicates into views before rewrite
_precompute_gid_values TRUE precompute gid values and copy them before returning a row
_pred_move_around TRUE enables predicate move-around
_pred_push_cdb_view_enabled TRUE predicate pushdown enabled for CDB views
_predicate_elimination_enabled TRUE allow predicate elimination if set to TRUE
_predicate_validity_execution FALSE enable execution-time check for predicate validation
_prefer_local_temp FALSE Use Local Temp as preferred default tablespace
_prefered_standby standby db_unique_name prefered for krb operations
_preformat_tempfile_bmbs TRUE Enable preformatting enough bmbs for tempfile
_preplugin_backup enabled enable/disable pre-plugin backup feature
_prescomm FALSE presume commit of IMU transactions
_preshut_action_max_time 5 Maximum Time allowed for Preshut Actions
_prespawn_batch_count 20 prespawn batch count
_prespawn_bg_init_count 0 prespawn background init count
_prespawn_enabled FALSE Is prespawn enabled
_prespawn_fg_init_count 0 prespawn foreground init count
_prespawn_level prespawn level
_prespawn_max_count 50 prespawn max count
_prespawn_min_count 10 prespawn minimum count
_primary_guard_wait_timeout 120 Number of secords for guard wait timeout on primary
_print_inmem_heatmap 0 print inmem ilm heatmap
_print_inmem_srmap 0 print inmem spacereuse map
_print_refresh_schedule false enable dbms_output of materialized view refresh schedule
_print_stat_segment 0 print ilm statistics segment
_priv_for_set_current_schema FALSE ALTER SESSION privilege required for SET CURRENT_SCHEMA
_private_endpoint_sharee FALSE Register the PDB as Reverse Connection Endpoint (RCE) Sharee
_private_endpoint_sharing_mode Sharing Mode for Reverse Connection Endpoint (RCE) Sharees
_private_memory_address Start address of large extent memory segment
_proc_grp_enabled 3 proc-group enabled
_proc_grp_numa_map proc-group map string
_process_allocation_slots 100 process allocation slots
_process_heartbeat_range 3 Process heartbeat range
_process_max_pred_increase 20000 process SO max predicted increase
_process_percent_rampup_end 320 process SO percent rampup end
_process_percent_rampup_start 320 process SO percent rampup start
_process_prediction_failover_buffer 1 process prediction failover buffer
_process_save_prediction FALSE save process prediction for next instance startup
_process_so_max_inc 20000 process SO max inc
_profile_sensitive_users Database Users with restricted password profile
_project_view_columns TRUE enable projecting out unreferenced columns of a view
_projection_pushdown TRUE projection pushdown
_projection_pushdown_debug 0 level for projection pushdown debugging
_prop_old_enabled FALSE Shift to pre 11g propagation behaviour
_propogate_restore_point TRUE Allow shipping of restore point from primary to standby
_protect_frame_heaps FALSE Protect cursor frame heaps
_protect_pga_extents FALSE protection for pga extents
_proxy_connect_after_set_container TRUE Enable proxy connection after set container
_psdclog_enable FALSE Mandatory Cloud Logging of PL/SQL Utility Packages Usages
_psdclog_threshold 10 Threshold for Cloud Logging of PL/SQL Utility Packages Usages
_pseudo_bootstrap FALSE Indicate that pseudo boostrap be done
_pseudo_redo_dump FALSE Convert all internal redo dump to pseudo redo dump
_psr_opt enable feature options for standby pdb recovery
_ptf_enable_objects FALSE enable object types in PTF
_ptf_max_rows 1024 number of rows per row-buffer
_ptn_cache_threshold 1 flags and threshold to control partition metadata caching
_ptt_max_num 16 Maximum number of PTTs per session
_ptt_rec_max_num 200 Maximum number of PTTs per recursive session
_purge_idcs_access_token FALSE Purge IDCS Access Token
_push_join_predicate TRUE enable pushing join predicate inside a view
_push_join_union_view TRUE enable pushing join predicate inside a union all view
_push_join_union_view2 TRUE enable pushing join predicate inside a union view
_pwise_distinct_enabled TRUE enable partition wise distinct
_px_adaptive_dist_bypass_enabled TRUE enable the bypass table queue for adaptive distribution methods
_px_adaptive_dist_bypass_optimization 1 sets optimizations for bypass table queue for ADM
_px_adaptive_dist_method CHOOSE determines the behavior of adaptive distribution methods
_px_adaptive_dist_method_threshold 0 Buffering / decision threshold for adaptive distribution methods
_px_adaptive_dist_nij_enabled ON enable adaptive distribution methods for left non-inner joins
_px_adaptive_offload_percentage 30 percentage for PQ adaptive offloading of granules
_px_adaptive_offload_threshold 10 threshold (GB/s) for PQ adaptive offloading of granules
_px_autodop_pq_overhead TRUE adjust auto dop calculation using pq overhead
_px_back_to_parallel OFF allow going back to parallel after a serial operation
_px_bind_peek_sharing TRUE enables sharing of px cursors that were built using bind peeking
_px_broadcast_fudge_factor 100 set the tq broadcasting fudge factor percentage
_px_buf_subheap_size 4096 buffer subheap size
_px_buffer_ttl 30 ttl for px mesg buffers in seconds
_px_cdb_view_enabled TRUE parallel cdb view evaluation enabled
_px_cdb_view_join_enabled TRUE disable parallelism cap on CDB view
_px_chunk_size 1000000 default size of a chunk for row id granules (in KB)
_px_chunklist_count_ratio 32 ratio of the number of chunk lists to the default DOP per instance
_px_compilation_debug 0 debug level for parallel compilation
_px_compilation_trace 0 tracing level for parallel compilation
_px_concurrent TRUE enables pq with concurrent execution of serial inputs
_px_cpu_autodop_enabled TRUE enables or disables auto dop cpu computation
_px_cpu_operator_bandwidth CPU operator bandwidth in MB/sec for DOP computation
_px_cpu_process_bandwidth 200 CPU process bandwidth in MB/sec for DOP computation
_px_dist_agg_partial_rollup_pushdown ADAPTIVE perform distinct agg partial rollup pushdown for px execution
_px_dp_array_size 32767 Max number of pq processes supported
_px_dump_12805_source TRUE enables or disables tracing of 12805 signal source
_px_dup_proc_check FALSE enable duplicate parallel process check with name service
_px_dynamic_granules TRUE enable dynamic granule generation
_px_dynamic_granules_adjust 10 adjust dynamic granule regeneration
_px_dynamic_opt TRUE turn off/on restartable qerpx dynamic optimization
_px_dynamic_sample_size 50 num of samples for restartable qerpx dynamic optimization
_px_execution_services_enabled TRUE enable service-based constraint of px slave allocation
_px_extended_join_skew_handling TRUE enables extended skew handling for parallel joins
_px_external_table_default_stats TRUE the external table default stats collection enable/disable
_px_filter_parallelized TRUE enables or disables correlated filter parallelization
_px_filter_skew_handling TRUE enable correlated filter parallelization to handle skew
_px_flood_ctrl_time 900 parallel flood control time in seconds
_px_freelist_latch_divisor 2 Divide the computed number of freelists by this power of 2
_px_gim_factor 100 weighted autodop global index maintenance factor
_px_granule_alignment 1024 default size of a rowid range granule (in KB)
_px_granule_batch_size 26 maximum size of a batch of granules
_px_granule_randomize TRUE enables or disables randomization of parallel scans rowid granules
_px_granule_size 1000000 default size of a rowid range granule (in KB)
_px_groupby_pushdown FORCE perform group-by pushdown for parallel query
_px_hold_time 0 hold px at execution time (unit: second)
_px_hybrid_TSM_HWMB_load TRUE Enable Hybrid Temp Segment Merge/High Water Mark Brokered load method
_px_hybrid_partition_execution_enabled TRUE enable parallel hybrid partition execution
_px_hybrid_partition_skew_threshold 10 partitions bigger than threshold times average size are skewed
_px_increase_join_frag_size TRUE increase join message fragment size
_px_index_sampling_objsize TRUE parallel query sampling for index create based on object size
_px_io_process_bandwidth 200 IO process bandwidth in MB/sec for computing DOP
_px_io_system_bandwidth 0 total IO system bandwidth in MB/sec for computing DOP
_px_join_skew_handling TRUE enables skew handling for parallel joins
_px_join_skew_minfreq 30 sets minimum frequency(%) for skewed value for parallel joins
_px_join_skew_null_handling TRUE enables null skew handling improvement for parallel outer joins
_px_join_skew_ratio 10 sets skew ratio for parallel joins
_px_join_skew_sampling_percent 0 Sets sampling percentage for skew handling sampling queries
_px_join_skew_sampling_time_limit 50 Sets execution time limit for skew handling sampling queries
_px_join_skew_use_histogram TRUE Enables retrieval of skewed values from histogram when possible
_px_join_skewed_values_count 0 force join skew handling with specified skewed values count
_px_kxib_tracing 0 turn on kxib tracing
_px_load_balancing_policy UNIFORM parallel load balancing policy
_px_load_factor 300 weighted autodop load factor
_px_load_monitor_threshold 10000 threshold for pushing information to load slave workload monitor
_px_load_publish_interval 200 interval at which LMON will check whether to publish PX load
_px_loc_msg_cost 1000 CPU cost to send a PX message via shared memory
_px_max_granules_per_slave 100 maximum number of rowid range granules to generate per slave
_px_max_map_val 32 Maximum value of rehash mapping for PX
_px_max_message_pool_pct 40 percentage of shared pool for px msg buffers range [5,90]
_px_message_compression TRUE enable compression of control messages for parallel query
_px_min_granules_per_slave 13 minimum number of rowid range granules to generate per slave
_px_min_ndv_per_slave_perc_func 2 mininum NDV of TQ keys needed per slave for parallel percentile
_px_minus_intersect TRUE enables pq for minus/interect operators
_px_net_msg_cost 10000 CPU cost to send a PX message over the internconnect
_px_nlj_bcast_rr_threshold 10 threshold to use broadcast left random right distribution for NLJ
_px_no_granule_sort FALSE prevent parallel partition granules to be sorted on size
_px_no_stealing FALSE prevent parallel granule stealing in shared nothing environment
_px_nss_planb TRUE enables or disables NSS Plan B reparse with outline
_px_numa_stealing_enabled TRUE enable/disable PQ granule stealing across NUMA nodes
_px_numa_support_enabled FALSE enable/disable PQ NUMA support
_px_object_sampling 200 parallel query sampling for base objects (100000 = 100%)
_px_object_sampling_enabled TRUE use base object sampling when possible for range distribution
_px_object_sampling_multiplier 2 number of samples to send to QC per slave is DOP * prmixsm
_px_onepass_slave_acquisition TRUE enable/disable one pass slave acquisition for parallel execution
_px_oneslave_per_instance_parse TRUE send parse to one slave per instance
_px_overhead_exec_ctrlmesg 4 pq overhead on sending one control message during execution (in micros
_px_overhead_init_endpoints 4 pq overhead on setting up one end point during initialization (in micr
_px_overhead_init_slavealloc 1000 pq overhead on allocating per slave during initialization (in microsec
_px_overhead_teardown 600 pq overhead on setting up one end point during initialization (in micr
_px_parallel_spawn_min_count 2 PQ parallel spawn min threshold count
_px_parallelize_expression TRUE enables or disables expression evaluation parallelization
_px_parallelize_non_native_datatype TRUE enable parallelization for non-native datatypes
_px_partial_rollup_pushdown ADAPTIVE perform partial rollup pushdown for parallel execution
_px_partition_load_dist_threshold 64 # of load slave to # of partition ratio to switch distribution
_px_partition_load_skew_handling OFF enable partition load skew handling
_px_partition_load_skew_threshold 3 partition loads bigger than threshold times average are skewed
_px_partition_scan_enabled TRUE enables or disables parallel partition-based scan
_px_partition_scan_threshold 64 least number of partitions per slave to start partition-based scan
_px_partition_skew_threshold 80 percentage of table size considered as threshold for skew determinatio
_px_proactive_slave_alloc_threshold 8 parallel proactive slave allocation threshold/unit
_px_proactive_slave_release 1 early release of producer slaves of final DFO
_px_proc_constrain TRUE reduce parallel_max_servers if greater than (processes - fudge)
_px_pwg_enabled TRUE parallel partition wise group by enabled
_px_pwise_wif_enabled TRUE enable parallel partition wise window function
_px_pwmr_enabled TRUE parallel partition wise match recognize enabled
_px_replication_enabled TRUE enables or disables replication of small table scans
_px_reuse_server_groups MULTI enable/disable reusing of server groups that are already acquired
_px_round_robin_rowcnt 1000 round robin row count to enq to next slave
_px_rownum_pd TRUE turn off/on parallel rownum pushdown optimization
_px_scalable_gby_invdist TRUE scalable PX plan for GBY w/ inverse distribution functions
_px_scalable_invdist TRUE enable/disable px scalable plan for inverse distribution functions
_px_scalable_invdist_mcol TRUE enable/disable px plan for percentile functions on multiple columns
_px_send_timeout 300 IPC message send timeout value in seconds
_px_shared_hash_join FALSE enable/disable shared hash join
_px_single_server_enabled TRUE allow single-slave dfo in parallel query
_px_slave_parse_first_with_outline_hints TRUE Enable/Disable trying outlined plan first
_px_split_batches_per_slave 7 number of split granules per slave for exadoop
_px_split_multi_msg TRUE use multiple messages to send batch of split granules
_px_split_use_single_list TRUE use single list for split granules
_px_tq_memcpy_threshold 100 threshold for PQ TQ to use memcpy for packing columns
_px_tq_rowhvs TRUE turn on intra-row hash valueing sharing in TQ
_px_trace none px trace parameter
_px_ual_serial_input TRUE enables new pq for UNION operators
_px_wif_dfo_declumping CHOOSE NDV-aware DFO clumping of multiple window sorts
_px_wif_extend_distribution_keys TRUE extend TQ data redistribution keys for window functions
_px_wif_min_ndv_per_slave 2 mininum NDV of TQ keys needed per slave for scalable WiF PX
_px_window_skew_handling TRUE enable window function skew handling
_px_window_skew_sample_size 1000 window function skew sample size
_px_xt_granule_sampling_ratio 200 range table queue object sampling ratio for external table
_px_xtgranule_size 10000 default size of a external table granule (in KB)
_qa_control 0 Oracle internal parameter to control QA
_qa_lrg_type 0 Oracle internal parameter to specify QA lrg type
_qc_oracle_script_counter TRUE QC sends _oracle_script parameter as counter
_qesma_access_count 1 controls scan count collection for X$QESMA_ACCESS_COUNT table
_qesma_bo_lru_sz 25 size of base object LRU list for QESMA session cache
_qesma_mvob_lru_sz 25 size of MVOB LRU list for QESMA session cache
_qesma_mvob_pin_lru_sz 5 size of MVOB pin LRU list for QESMA session cache
_qesma_rt_parallel_check 1 verify qesma metadata at runtime for parallel execution
_qesmasc_trc 0 tracing for QESMA session cache
_qkgl_crit_pct_threshold 80 Queue KGL critical percentage allocation threshold
_qksfgi_disable_action_mask 0 disable fine-grained cursor invalidation actions
_qksfgi_disable_oct_mask 0 disable fine-grained cursor invalidation for certain oct
_qksfgi_dix_val FALSE controls action of fine-grained cursor invalidation for DROP INDEX
_qksfgi_dynamic_partitions enable partition bind SQLIDs for
_qksfgi_feature_level 0 controls the feature level for fine-grained cursor invalidation
_qkslvc_47510_sys 1 enable project 47510 for internal users
_qkslvc_47510_test 0 enable project 47510 for testing
_qkslvc_diag_flags 0 diagnostic flags for qkslvc
_qkslvc_extended_bind_sz 1 controls error checking for the max_string_size parameter
_quantified_path_pattern_maximum_upper_bound maximum upper bound allowed for SQL PGQ quantified path pattern
_quarantine_enabled TRUE quarantine: enable
_quarantine_max_mem 1 quarantine: max amount of memory
_quarantine_max_objs 10000 quarantine: max number of objects
_quarantine_per_hour 60 quarantine: limit per hour
_query_cost_rewrite TRUE perform the cost based rewrite with materialized views
_query_execution_cache_max_size 131072 max size of query execution cache
_query_execution_time_limit 0 Query execution time limit in seconds
_query_mmvrewrite_maxcmaps 20 query mmv rewrite maximum number of cmaps per dmap in query disjunct
_query_mmvrewrite_maxdmaps 10 query mmv rewrite maximum number of dmaps per query disjunct
_query_mmvrewrite_maxinlists 5 query mmv rewrite maximum number of in-lists per disjunct
_query_mmvrewrite_maxintervals 5 query mmv rewrite maximum number of intervals per disjunct
_query_mmvrewrite_maxpreds 10 query mmv rewrite maximum number of predicates per disjunct
_query_mmvrewrite_maxqryinlistvals 500 query mmv rewrite maximum number of query in-list values
_query_mmvrewrite_maxregperm 512 query mmv rewrite maximum number of region permutations
_query_on_physical TRUE query on physical
_query_rewrite_1 TRUE perform query rewrite before&after or only before view merging
_query_rewrite_2 TRUE perform query rewrite before&after or only after view merging
_query_rewrite_drj FALSE mv rewrite and drop redundant joins
_query_rewrite_expression TRUE rewrite with cannonical form for expressions
_query_rewrite_extended_cursor_sharing TRUE allow extended cursor sharing for MV query rewrite
_query_rewrite_fpc TRUE mv rewrite fresh partition containment
_query_rewrite_fudge 90 cost based query rewrite with MVs fudge factor
_query_rewrite_jgmigrate TRUE mv rewrite with jg migration
_query_rewrite_maxdisjunct 257 query rewrite max disjuncts
_query_rewrite_or_error FALSE allow query rewrite, if referenced tables are not dataless
_query_rewrite_setopgrw_enable TRUE perform general rewrite using set operator summaries
_query_rewrite_use_on_query_computation TRUE query rewrite use on query computation
_query_rewrite_user_bind_peeking TRUE allow user bind peeking for MV query rewrite
_query_rewrite_vop_cleanup TRUE prune frocol chain before rewrite after view-merging
_queue_buffer_max_dump_len 65536 max number of bytes to dump to trace file for queue buffer dump
_rac_dbtype_reset FALSE RAC database type reset from CRS
_rac_propagate_last_rba TRUE Propagate last written log redo address in RAC for log mining
_radm_enabled TRUE Data Redaction
_rbr_ckpt_tracing 0 Enable reuse block range checkpoint tracing
_rc_sys_obj_enabled TRUE result cache enabled for Sys Objects
_rce_dblink_hostname_transform FALSE Transform RCE database link to add hostname
_rce_dns_suffix suffix for RCE DNS Proxy based DNS resolution
_rcfg_disable_verify TRUE if TRUE disables verify at reconfiguration
_rcfg_parallel_fixwrite TRUE if TRUE enables parallel fixwrite at reconfiguration
_rcfg_parallel_replay TRUE if TRUE enables parallel replay and cleanup at reconfiguration
_rcfg_parallel_verify FALSE if TRUE enables parallel verify at reconfiguration
_rdbms_compatibility 19.0 default RDBMS compatibility level
_rdbms_internal_fplib_enabled FALSE enable CELL FPLIB filtering within rdbms
_rdbms_internal_fplib_raise_errors FALSE enable reraising of any exceptions in CELL FPLIB
_rdbms_min_compatibility 19.0 default mininum RDBMS compatibility level
_rds_congestion_timeout 0 Configure RDS Congestion timer (us)
_rds_congestion_type Configure RDS Congestion type
_re_fast_sql_operator all enables fast boxable sql operator
_re_independent_expression_cache_size 20 defines max number of compiled cached expressions for iee
_re_max_sql_op_cache_lmt 7 maximun sql operator cache limit
_re_num_complex_operator 1000 defines max number of compiled complex operator per ruleset-iee
_re_num_rowcache_load 2 defines max number of complex operators loaded with row cache
_re_result_cache_keysiz 20 defines max number key for result cache hash table
_re_result_cache_size 20 defines max number of cached elements for result cache
_read_delay_threshold 4294967294 delay in read i/o completion threshold (in seconds)
_read_mostly_enable_logon FALSE Read mostly/ Read only instances enable non-privileged logons
_read_mostly_instance FALSE indicates this is a read_mostly instance
_read_mostly_instance_qa_control 0 internal parameter to control read mostly instance QA
_read_mostly_lock_mitigation TRUE Read Mostly Lock mitigation support
_read_mostly_slave_timeout 20 Time to wait on read mostly node when hub not available
_read_only_slave_timeout 30 Time to wait on read only node when hub not available
_read_only_violation_dump_to_trace FALSE read-only violation dump to trace files
_read_only_violation_max_count 500 read-only violation array max count
_read_only_violation_max_count_per_module 100 read-only violation array per module max count
_read_optimized_table_lookup TRUE enables read-optimized table lookup
_readable_standby_sync_interval 0 readable standby recovery global sync interval
_readable_standby_sync_timeout 10 readable standby query scn sync timeout
_reader_farm_isolation_enable FALSE Reader Farm instances isolation enable
_reader_farm_isolation_time_threshold 200 reader farm isolation time threshold
_real_time_apply_sim 0 Simulation value with real time apply
_realfree_heap_max_size 32768 minimum max total heap size, in Kbytes
_realfree_heap_mode 0 mode flags for real-free heap
_realfree_heap_pagesize 65536 hint for real-free page size in bytes
_realfree_pq_heap_pagesize 65536 hint for pq real-free page size in bytes
_reclaim_lob_index_scan_limit 0 limit lob index scanning during lob space-reclaim
_reco_network_timeout 10 RECO read/send timeout value
_reco_populate_mode 1 Mode of RECO protocol execution
_reco_sessions_max_percentage 50 allowed RECO sessions as a percentage of total sessions allowed
_reconfiguration_opt_level 493 reconfiguration optimization level
_record_module_name TRUE Record module name in BEGIN action
_recoverable_recovery_batch_percent 50 Recoverable recovery batch size (percentage of buffer cache)
_recoverable_recovery_max_influx_buffers 100000 Recoverable recovery number of influx buffers limit
_recovery_asserts FALSE if TRUE, enable expensive integrity checks
_recovery_percentage 50 recovery buffer cache percentage
_recovery_read_limit 1024 number of recovery reads which can be outstanding
_recovery_skip_cfseq_check FALSE allow media recovery even if controlfile seq check fails
_recovery_test_kdivs 0 If not 0, Throw error in kdivs_hnsw_scan_get_rids
_recovery_verify_writes FALSE enable thread recovery write verify
_recursive_imu_transactions FALSE recursive transactions may be IMU
_recursive_with_branch_iterations 7 Expected number of iterations of the recurive branch of RW/CBY
_recursive_with_control 0 control different uses/algorithms related to recursive with
_recursive_with_max_recursion_level 0 check for maximum level of recursion instead of checking for cycles
_recursive_with_parallel TRUE Enable/disable parallelization of Recursive With
_recursive_with_using_temp_table FALSE Enable the use of CDT for serial execution of Recursive With
_recycle_con_cache_size 5 Recycle con# cache size
_redef_on_statement FALSE Use on-statement refresh in online redefinition
_redo_compatibility_check FALSE general and redo/undo compatibility sanity check
_redo_encryption_cipher_mode XTS default redo encryption block cipher mode
_redo_generation_max_kbytes_sec 0 redo generation maximum KB/s
_redo_indexes_apply DISABLE utilize redo range indexes in recovery
_redo_log_check_backup 10 time interval in minutes between wakeups to check backup of redo logs
_redo_log_debug_config 0 Various configuration flags for debugging redo logs
_redo_log_key_reuse_count 0 Determines the number of redo logs sharing the same redo log key
_redo_log_record_life 168 Life time in hours for redo log table records
_redo_read_from_memory TRUE Enable reading redo from in-memory log buffer
_redo_transport_async_mode 0 redo transport ASYNC process mode
_redo_transport_compress_all TRUE Is ASYNC LNS compression allowed?
_redo_transport_evict_threshold 10 Threshold beyond which a slower ASYNC connection will be evicted
_redo_transport_max_kbytes_sec 0 redo transport maximum KB/s
_redo_transport_min_kbytes_sec 0 redo transport minimum KB/s
_redo_transport_redo_log_management redo log management
_redo_transport_resource_management FALSE Redo transport resource management
_redo_transport_sanity_check 0 redo transport sanity check bit mask
_redo_transport_stall_time 360 use parameter DATA_GUARD_MAX_IO_TIME
_redo_transport_stall_time_long 3600 use parameter DATA_GUARD_MAX_LONGIO_TIME
_redo_transport_stream_test TRUE test stream connection?
_redo_transport_stream_writes TRUE Stream network writes?
_redo_transport_vio_size_req 1048576 VIO size requirement
_redo_write_coalesce_all_threshold 0 Redo write coalescing threshold (all strands) in bytes
_redo_write_coalesce_slave_threshold 0 Redo write coalescing threshold (slave strands) in bytes
_redo_write_sync_single_io TRUE enable sync I/O for single redo write
_reduce_sby_log_scan TRUE enable log scan optimization
_ref_cons_sql_enforcement TRUE disable extended/data ref constraint SQL enforcement
_refclone_redirect FALSE statement redirection in Refreshable Clone
_refclone_source_connect_string connect string for redirection in refreshable clone
_refresh_clone_adg TRUE allows a refreshable clone to function as an ADG
_reg_cache_status FALSE Enables or disabled caching
_region_name gsm region name
_release_insert_threshold 5 maximum number of unusable blocks to unlink from freelist
_reliable_block_sends TRUE if TRUE, no side channel on reliable interconnect
_relocate_pdb FALSE Relocate PDB to another RAC instance after it is closed in the current
_relocation_commit_batch_size 8 ASM relocation commit batch size
_remessage_dbwrs 0 DBWR wait and remessage time - in cs
_remote_asm remote ASM configuration
_remote_awr_enabled FALSE Enable/disable Remote AWR Mode
_remote_extproc_agent FALSE enable/disable remote extproc agent
_remote_http_port 0 HTTP port number registered with remote listener
_remote_sv_sequence 4 0 disables smart sv optimization, 1 enables it only in director instan
_remove_aggr_subquery TRUE enables removal of subsumed aggregated subquery
_remove_exf_component TRUE enable/disable removing of components EXF and RUL during upgrade
_remove_hostname_from_module FALSE If enabled then remove hostname, set only application as module
_rep_base_path base path for EM reports in database
_replace_virtual_columns TRUE replace expressions with virtual columns
_report_capture_cycle_time 60 Time (in sec) between two cycles of report capture daemon
_report_capture_dbtime_percent_cutoff 50 100X Percent of system db time daemon is allowed over 10 cycles
_report_capture_recharge_window 10 No of report capture cycles after which db time is recharged
_report_capture_timeband_length 1 Length of time band (in hours) in the reports time bands table
_report_request_ageout_minutes 60 Time (in min) after which a report request is deleted from queue
_request_boundaries 3 request boundaries mode
_request_deferral_enabled FALSE enable request deferral
_request_deferral_timeout_sec 0 request deferral timeout
_reset_increase_lmd_process TRUE set to true to allow reset of _increase_lmd_process changes
_reset_increase_lms_process TRUE set to true to allow reset of _increase_lms_process changes
_resource_exhaustion_warning_thresholds 655361281 thresholds and frequency of actions related to resource exhaustion
_resource_exhaustion_warnings 0 enable warnings/crash when certain finite resources are used up
_resource_includes_unlimited_tablespace FALSE Whether RESOURCE role includes UNLIMITED TABLESPACE privilege
_resource_manager_always_off FALSE disable the resource manager always
_resource_manager_plan resource mgr top plan for internal use
_restore_block0 on restore block0
_restore_create_directory TRUE automatically create directory during restore
_restore_delayed_write FALSE restore datafiles with delayed write option
_restore_maxopenfiles 8 restore assumption for maxopenfiles
_restore_spfile restore spfile to this location
_restrict_become_user TRUE become user functionality restricted
_restrict_db_link_user_entries 10000 Maximum number of entries per db link user
_restrict_link_local_address TRUE Restrict Link Local IP addresses for Outbound Communication
_restrict_local_user_dml TRUE Restrict Local user's ability to update sensitive tables
_restrict_operator_access FALSE Restrict Cloud Operator access to customer PDBs
_restrict_pdb_gv FALSE restrict GV$ in a PDB
_result_cache_auto_blocklist_epsilon 10000 How much better blocklisted objects must be to be unblocklisted
_result_cache_auto_blocklist_frequency 40000 Frequency of autoblocklist checks in units of RC invalidations
_result_cache_auto_blocklist_threshold 1000 Threshold of ratio of ROs created to used before blocklisting
_result_cache_auto_broadcast_threshold 10000 Threshold of RAC round trip times before blocklisting
_result_cache_auto_dml_monitoring_duration 15 result cache auto dml monitoring duration
_result_cache_auto_dml_monitoring_slots 4 result cache auto dml monitoring slot
_result_cache_auto_dml_threshold 16 result cache auto dml threshold
_result_cache_auto_dml_trend_threshold 20 result cache auto dml trend threshold
_result_cache_auto_execution_threshold 1 result cache auto execution threshold
_result_cache_auto_ignore_list 0 object numbers that will never be auto blocklisted
_result_cache_auto_size_threshold 100 result cache auto max size allowed
_result_cache_auto_time_distance 300 result cache auto time distance
_result_cache_auto_time_threshold 1000 result cache auto time threshold
_result_cache_black_list cache_id's not allowed to use the result cache
_result_cache_block_size 4096 result cache block size
_result_cache_copy_block_count 1 blocks to copy instead of pinning the result
_result_cache_determ_salt FALSE Use deterministic salt for result cache?
_result_cache_deterministic_plsql FALSE result cache deterministic PLSQL functions
_result_cache_do_recycle_period 300 Timeout value for DOs added through invalidation
_result_cache_global TRUE Are results available globally across RAC?
_result_cache_global_send TRUE Is global send conditional in RAC?
_result_cache_history_size 0 memory used to track PL/SQL function history
_result_cache_latch_count 4 number of result cache latches
_result_cache_latch_free_reads NEVER latch free reads
_result_cache_load_rate 1 Simulated global load rate (bytes per 1/100 sec)
_result_cache_object_black_list 0 object numbers not allowed to use the result cache
_result_cache_per_pdb TRUE Is service result cache per pdb
_result_cache_timeout 1 maximum time (sec) a session waits for a result
_result_cache_use_hash_table TRUE whether to use hash table for object tracking
_result_cache_white_list users allowed to use result cache
_resumable_critical_alert 0 raise critical alert for resumable failure
_retry_file_copy TRUE Enable retry for file copy in Create PDB
_reuse_dropped_pdbid_time 180 Time in seconds to wait before reusing a dropped PDB ID
_reuse_index_loop 5 number of blocks being examine for index block reuse
_reuse_object_number_delay 0 delay in days before reusing object numbers
_reuse_object_numbers 7 reuse object numbers
_reuse_object_numbers_qa 0 reuse object numbers testing
_reuse_object_numbers_reserve_days 60 number of days worth of obj# to maintain in recycle table
_rf_blocks_per_entity 5 number of blocks per entity
_right_outer_hash_enable TRUE Right Outer/Semi/Anti Hash Enabled
_rm_atp_cpu_cnt_scale 1 Scaling factor for cpu count in ATP
_rm_base_data_dg_sz 125566976 Base DATA disk group size for ADBS
_rm_cell_cpu_scale 0 Scaling factor for storage cell cpu usage
_rm_cluster_interconnects interconnects for RAC use (RM)
_rm_exadata_disable_dbcpurm FALSE Disable the Exadata DB cpu resource manager feature
_rm_exadata_fcsize_unit 1099511627776 PDB usage size unit for flash cache for Exadata
_rm_exadata_partition_fc FALSE Partition flash cache for Exadata
_rm_exadata_pdb_cpu_cnt FALSE Use PDB CPU cnt for Exadata smart scan
_rm_exadata_pdb_cpu_cnt_mult 1 Multiplication factor for PDB cpu count
_rm_exadata_pdb_fcsz_scale 0 Scale factor for PDB FC size
_rm_exadata_pdb_mult_storage 1 Multiplier of PDB storage count for Exadata throughput-based IORM limi
_rm_force_caging Force Instance Caging
_rm_numa_sched_enable TRUE Is Resource Manager (RM) related NUMA scheduled policy enabled
_rm_numa_simulation_cpus 0 number of cpus for each pg for numa simulation in resource manager
_rm_numa_simulation_pgs 0 number of PGs for numa simulation in resource manager
_rm_schedstat_off FALSE Disable Linux schedstat
_rm_sgllim 0 Single CPU limit control
_rm_superlong_threshold 300000 DBRM kskrunstatechk superlong threshold
_rm_tolerance_lwt 5 RM tolerance for LWT to report consumed cpu
_rman_client_wait_time 10 maximum time to wait for the client
_rman_io_priority 3 priority at which rman backup i/o's are done
_rman_restore_db_master_key_sync_source CONTROL_FILE RMAN restore DB master key sync source
_rman_roundrobin_placement Numa round robin placement for RMAN procs
_rman_space_bitmap_blocks 1 control backup and restore of space bitmap blocks
_rmt_for_table_redef_enabled TRUE Use Rowid Mapping Table for table redef
_rmv_dynamic_priority TRUE enable rmv priority modification
_roi_first_open_wait 120 duration of ROI first open wait for RWI open
_rollback_segment_count 0 number of undo segments
_rollback_segment_initial 1 starting undo segment number
_rollback_stopat 0 stop at -position to step rollback
_rolling_patchlevel This parameter is no longer used
_rolling_vsnnum Mimic given vsnnum during test
_rond_test_mode 0 rac one node test mode
_root_clone_skip_trigger TRUE Skip trigger in Application Root Clone
_root_clone_state_from_root TRUE Application Root Clone's state comes from Application Root
_router_accept_mappings TRUE enable validation against target PDB's accepted mappings
_router_allow_locked_target_user FALSE Allow queries even if Target user status is locked
_router_current_user TRUE enable routing current username to remote PDB via SQLNet
_router_ddl_redirect FALSE Redirect DDL opcodes from Router PDB to Target PDB
_router_pdb FALSE enable router PDB functionality
_row_cache_cursors 20 number of cached cursors for row cache management
_row_cache_dump_cooling_period 10 Period to wait (in minutes) before resetting dump count
_row_cache_dump_interval 0 Interval (in seconds) between each dump
_row_cr TRUE enable row cr for all sql
_row_locking always row-locking
_row_shipping_explain FALSE enable row shipping explain plan support
_row_shipping_threshold 100 row shipping column selection threshold
_rowlen_for_chaining_threshold 1000 maximum rowlen above which rows may be chained across blocks
_rowsets_cdb_view_enabled TRUE rowsets enabled for CDB views
_rowsets_enabled TRUE enable/disable rowsets
_rowsets_max_enc_rows 64 maximum number of encoded rows in a rowset
_rowsets_max_rows 256 maximum number of rows in a rowset
_rowsets_target_maxsize 524288 target size in bytes for space for a rowset
_rowsets_use_encoding TRUE allow/disallow use of encoding with rowsets
_rowsets_use_work_heap_buffer TRUE allow/disallow use of work heap buffer for values for rowsets
_rowsource_execution_statistics FALSE if TRUE, Oracle will collect rowsource statistics
_rowsource_profiling_statistics TRUE if TRUE, Oracle will capture active row sources in v$active_session_hi
_rowsource_statistics_sampfreq 128 frequency of rowsource statistic sampling (must be a power of 2)
_rowsrc_trace_level 0 Row source tree tracing level
_rq_shm_max_size 1024 maximum size of an RQuery shared memory segement (in KB)
_rsrc_cpu_count CPU Count for allocating resources.
_rta_sync_wait_timeout 10 RTA sync wait timeout
_rtabnd_update_offload TRUE RFS process offload RTA boundary update
_rtaddm_trigger_args comma-separated list of numeric arguments for RT addm trigger
_rtaddm_trigger_enabled FALSE To enable or disable Real-Time ADDM automatic trigger
_rtc_infeasible_threshold 25 Redo Transport Compression infeasible threshold
_rule_max_dnfp_cnt 1024 Rules max dnf piece count
_runtime_index_key_length_check 1 allow runtime checking of index key length
_runtime_limit_parallel_fptr 60 run-time limit for for parallel first-pass recovery
_saga_afterlra_interval 300 qmon periodic interval for after saga processing
_saga_afterlra_option enabled option for after saga processing
_saga_clear_interval 86400 qmon periodic interval for processing saga clearing job
_saga_timeout_interval 3600 qmon periodic interval for processing saga timeout
_saga_timeout_operation_type rollback operation type when a saga expires
_sage_block_checking FALSE enable block checking of blocks returned by smartscan
_sample_rows_per_block 4 number of rows per block used for sampling IO optimization
_save_afns_on_subset_pdb_creation FALSE Use one reserved AFN for skipped tablespaces on pdb subset
_sbt_proxy_copy_buffer_size 0 Internal variable SBT library restore read ahead buffer size
_scalar_type_lob_storage_threshold 4000 threshold for VARCHAR2, NVARCHAR2, and RAW storage as BLOB
_scatter_gcs_resources FALSE if TRUE, gcs resources are scattered uniformly across sub pools
_scatter_gcs_shadows FALSE if TRUE, gcs shadows are scattered uniformly across sub pools
_sched_delay_max_samples 4 scheduling delay maximum number of samples
_sched_delay_measurement_sleep_us 1000 scheduling delay mesurement sleep us
_sched_delay_os_tick_granularity_us 16000 os tick granularity used by scheduling delay calculations
_sched_delay_sample_collection_thresh_ms 200 scheduling delay sample collection duration threshold ms
_sched_delay_sample_interval_ms 1000 scheduling delay sampling interval in ms
_scheduler_capture_dropped_obj_nums TRUE Capture dropped object numbers for scheduler jobs
_scheduler_cjq0_buffer_size 1024 buffer size (in KB) for scheduler IMT for CJQ process
_scheduler_inmemory_trace_timeout 600 Timeout for scheduler internal operations
_scheduler_jnnn_buffer_size 32 buffer size (in KB) for scheduler IMT for JNNN processes
_scheduler_ora_buffer_size 32 buffer size (in KB) for scheduler IMT for ORA processes
_schema_max_string_size 0 control schema-level max_string_size
_scn_wait_interface_max_backoff_time_secs 600 max exponential backoff time for scn wait interface in kta
_scn_wait_interface_max_timeout_secs 2147483647 max timeout for scn wait interface in kta
_sdiag_crash NONE sql diag crash
_search_space_from_beginning 2147483647 search free space from the beginning of a tablespace
_sec_enable_test_rpcs FALSE Whether to enable the test RPCs
_second_spare_parameter second spare parameter - integer
_second_spare_pdb_parameter second spare pdb parameter - integer
_securefile_log_num_latches 0 Maximum number of open descriptors for securefile log
_securefile_log_shared_pool_size 0 Size of securefile log buffer pool from SGA
_securefile_shrink_enable_nowaitlck FALSE Enable Securefile Shrink NOWAIT row locking
_securefile_shrink_linked_list_limit 100 Size limit on Securefile Lob Shrink state Linked list
_securefile_timers FALSE collect kdlu timers and accumulate per layers
_securefiles_bgtimeout 0 securefiles segment background invocation timeout
_securefiles_breakreten_retry 5 segment retry before dishonoring retention
_securefiles_bulkclnout TRUE securefiles segment bulk clnout optization
_securefiles_bulkinsert FALSE securefiles segment insert only optization
_securefiles_concurrency_estimate 12 securefiles concurrency estimate
_securefiles_dealloc_cfs 0 securefiles deallocate directly to CFS
_securefiles_fg_retry 100 segment retry before foreground waits
_securefiles_forceflush FALSE securefiles force flush before allocation
_securefiles_memory_percentofSGA 8 securefiles memory as percent of SGA
_securefiles_min_retention_override securefiles override retention min seconds
_securefiles_spcutl FALSE securefiles segment utl optimization
_seed_root_undo_ratio 30 Ratio of PDB$SEED to ROOT undo size, expressed as a percentage
_selectivity_for_srf_enabled FALSE enable/disable selectivity for storage reduction factor
_selfjoin_mv_duplicates TRUE control rewrite self-join algorithm
_selftune_checkpoint_write_pct 3 Percentage of total physical i/os for self-tune ckpt
_selftune_checkpointing_lag 300 Self-tune checkpointing lag the tail of the redo log
_sem_per_semid the exact number of semaphores per semaphore set to allocate
_send_ast_to_foreground AUTO if TRUE, send ast message to foreground
_send_close_with_block TRUE if TRUE, send close with block even with direct sends
_send_requests_to_pi TRUE if TRUE, try to send CR requests to PI buffers
_sensitive_common_as_local FALSE treat common user as local user for sensitive data handling
_sensitive_common_users list of common users to be treated as local
_sensitive_fixed_invalidate Invalidate sensitive policy fixed object dependent cursors
_sensitive_fixed_restrict FALSE Restrict access to fixed table rows for both local and common user
_sequence_scale_extend FALSE Force sequence creation with scale extend
_sequence_scale_noextend FALSE Force sequence creation with scale noextend
_sequence_scalev2_feature AUTO Inmemory Sequence Scalev2 flags
_serial_direct_read auto enable direct read in serial
_serial_log_write_worker_io FALSE Serialize log write worker I/O
_serial_recovery FALSE force serial recovery or parallel recovery
_serializable FALSE serializable
_serialize_lgwr_sync_io FALSE Serialize LGWR SYNC local and remote io
_service_cleanup_timeout 30 timeout to peform service cleanup
_service_internal_gateway service name registered with Net Listener on Internal Gateway
_sess_sign_num_pools 16 session signature: number of pools
_sess_template_all_overflow FALSE session template: put all attributes into overflow
_sess_template_cache_buckets 128 session template: number of cache buckets
_sess_template_enabled TRUE session template: enabled
_sess_template_max_cache_size 5 session template: max cache size (in 1/100% of SGA)
_sess_template_new_lists 16 session template: number of new lists
_sess_template_purge_time_mins 60 session template: purge time (in minutes)
_session_allocation_latches 4 one latch per group of sessions
_session_aware_replay TRUE Enable session aware replay
_session_cached_instantiations 60 Number of pl/sql instantiations to cache in a session.
_session_context_size 10000 session app context size
_session_idle_bit_latches 0 one latch per session or a latch per group of sessions
_session_limit_percent_cap 25 session limit percent cap
_session_max_pred_increase 20000 session SO max predicted increase
_session_modp_list 2 send session's modified parameter list to client
_session_page_extent 2048 Session Page Extent Size
_session_percent_rampup_end 504 session SO percent rampup end
_session_percent_rampup_start 504 session SO percent rampup start
_session_prediction_failover_buffer 1 session prediction failover buffer
_session_preserve_logon_container FALSE preserve the logon container id in the session
_session_save_prediction FALSE save session prediction for next instance startup
_session_so_max_inc 20000 session SO max inc
_session_wait_history 10 enable session wait history collection
_set_con_data_share FALSE Use set container for data share connections
_set_container_service DEFAULT set container service
_seventeenth_spare_parameter seventeenth spare parameter - integer
_seventeenth_spare_pdb_parameter seventeenth spare pdb parameter - integer
_seventh_spare_parameter seventh spare parameter - integer
_seventh_spare_pdb_parameter seventh spare pdb parameter - integer
_seventieth_spare_parameter seventieth spare parameter - integer
_seventieth_spare_pdb_parameter seventieth spare pdb parameter - boolean
_seventy-eighth_spare_parameter seventy-eighth spare parameter - integer
_seventy-fifth_spare_parameter seventy-fifth spare parameter - integer
_seventy-first_spare_parameter seventy-first spare parameter - integer
_seventy-fourth_spare_parameter seventy-fourth spare parameter - integer
_seventy-ninth_spare_parameter seventy-ninth spare parameter - integer
_seventy-second_spare_parameter seventy-second spare parameter - integer
_seventy-seventh_spare_parameter seventy-seventh spare parameter - integer
_seventy-sixth_spare_parameter seventy-sixth spare parameter - integer
_seventy-third_spare_parameter seventy-third spare parameter - integer
_sf_default_enabled TRUE enable 12g securefile default
_sga_alloc_slaves_term_timeout_secs 120 Termination timeout in secs for SA** slaves
_sga_clear_dump FALSE Allow dumping encrypted blocks in clear for debugging
_sga_early_trace 0 sga early trace event
_sga_grow_batch_size 2147483648 Dynamic SGA grow batch size
_sga_heap_chunk_alignment FALSE force SGA heap chunk alignment
_sga_heap_chunk_alignment_disabled FALSE force SGA heap chunks not to be aligned
_sga_shrink_allow FALSE Allow SGA shrink operation
_shadow_lost_write_found 118 Specify shadow lost write error handling
_shadow_lost_write_tracing 0 Enable new lost write tracing
_shard_allow_stale_read TRUE allow reading stale data during recovery
_shard_bddl_test_mode 0 shard BDDL test mode
_shard_cached_sessions 0 session cache size for cross shard SQLs
_shard_ddl_policy ASYNC DDL execution mode for shards
_shard_enable_cr_async_ddl TRUE SNR enable cross-region readonly async-DDL
_shard_enable_serialized_ddl TRUE enable workload-serialized DDL in Oracle Sharding Replication
_shard_foll_io_timeout_us 1000000 shard repl queue wait times in microseconds
_shard_hb_loss 0 SNR heartbeat loss timeout, csecs
_shard_lcr_cksum TRUE enable native sharding replication lcr checksum
_shard_max_num_raft_logfile 10 maximum number of raft log file
_shard_native_repl_rf5 FALSE SNR parameter to enable RF=5
_shard_raft_log_retention_time_mins Raft log retention time in minutes
_shard_raft_logfile_blksize 4096 SNR default logfile block size
_shard_raft_partial_copy_block_count 256 number of blocks to read/write during partial copy
_shard_raft_write_timeout 100000 io timeout before a follower write forced in us
_shard_reco_txn_test_mode 0 shard txn recovery test mode
_shard_repl_enable_xa FALSE SNR enable XA transactions
_shard_repl_max_iobuf 256 max number of snr io buffers
_shard_repl_queue_wait_us 1000 shard repl queue wait times in microseconds
_shard_size_lcrs_per_transaction 100000 number of lcrs per SNR transaction
_shard_sql_use_chunk_ids 0 Shard SQL use chunk ids
_shard_test_compatible override compatible value for testing
_shard_test_knclp_cap 0 override knclp_cap value for testing
_shardgroup_name gsm shardgroup name
_sharding_lockdown FALSE Oracle internal parameter
_shardspace_name gsm shardspace name
_share_drcp_proxy_sessions TRUE Enable Disable Proxy Session Sharing DRCP
_shared_io_pool_buf_size 1048576 Shared IO pool buffer size
_shared_io_pool_debug_trc 0 trace kcbi debug info to tracefile
_shared_io_pool_size 0 Size of shared IO pool
_shared_io_set_value FALSE shared io pool size set internal value - overwrite zero user size
_shared_iop_max_size 134217728 maximum shared io pool size
_shared_pool_lru_bufs 200 shared pool lru effort buffer size
_shared_pool_max_size 0 shared pool maximum size when auto SGA enabled
_shared_pool_max_sz 0
_shared_pool_minsize_on FALSE shared pool minimum size when auto SGA enabled
_shared_pool_reserved_min_alloc 4400 minimum allocation size in bytes for reserved area of shared pool
_shared_pool_reserved_pct 7 percentage memory of the shared pool allocated for the reserved area
_shared_server_load_balance 0 shared server load balance
_shared_server_num_queues 2 number of shared server common queues
_shared_server_sizing_coeff 1000 Shared server sizing coefficient
_shared_servers_performance 0 Tradeoff shared servers resource usage for performance
_shared_spfile_check parameter to validate shared spfile
_shd_atomic_move 0 Use atomic move
_shd_reptype 0 replication type of the databse and pool
_shmprotect 0 allow mprotect use for shared memory
_short_stack_timeout_ms 30000 short stack timeout in ms
_show_login_pdb_sessions FALSE return logon pdb container id from v$session
_shrd_que_tm_processes 1 number of sharded queue Time Managers to start
_shrd_que_tm_statistics_duration 0 Shaded queue statistics collection window duration
_shrunk_aggs_disable_threshold 60 percentage of exceptions at which to switch to full length aggs
_shrunk_aggs_enabled TRUE enable use of variable sized buffers for non-distinct aggregates
_shutdown_abort_detach_wait_msec 3000 Max wait time for processes to detach from SGA at shutdown
_shutdown_abort_timeout_mins 0 minutes for shutdown operation to wait for completion before initiatin
_shutdown_completion_timeout_mins 60 minutes for shutdown operation to wait for sessions to complete before
_shutdown_immediate_timeout 3600 seconds before killing sessions for shutdown immediate
_shutdown_sync_enable TRUE if TRUE, shutdown sync is issued before shutdown normal
_side_channel_batch_size 240 number of messages to batch in a side channel message (DFS)
_side_channel_batch_timeout 6 timeout before shipping out the batched side channelmessages in second
_side_channel_batch_timeout_ms 500 timeout before shipping out the batched side channelmessages in millis
_simple_view_merging TRUE control simple view merging performed by the optimizer
_simulate_dax_storage DISABLE Simulate log on DAX storage
_simulate_disk_sectorsize 0 Enables skgfr to report simulated physical disk sector size
_simulate_io_wait 0 Simulate I/O wait to test segment advisor
_simulate_logical_sectorsize 0 Enables skgfr to report simulated logical disk sector size
_simulate_mem_transfer FALSE simulate auto memory sga/pga transfers
_simulated_log_write_usecs 0 Simulated latency of log writes (usecs)
_simulator_bucket_mindelta 8192 LRU bucket minimum delta
_simulator_internal_bound 10 simulator internal bound percent
_simulator_lru_rebalance_sizthr 5 LRU list rebalance threshold (size)
_simulator_lru_rebalance_thresh 10240 LRU list rebalance threshold (count)
_simulator_lru_scan_count 8 LRU scan count
_simulator_pin_inval_maxcnt 16 maximum count of invalid chunks on pin list
_simulator_reserved_heap_count 4096 simulator reserved heap count
_simulator_reserved_obj_count 1024 simulator reserved object count
_simulator_sampling_factor 2 sampling factor for the simulator
_simulator_upper_bound_multiple 2 upper bound multiple of pool size
_single_process FALSE run without detached processes
_singleton_service_goodness_disabled TRUE singleton srvc goodness
_siop_flashback_scandepth 20 Shared IO pool flashback io completion scan depth
_siop_init_mem_gradually TRUE will cause shared io pool in small chunks
_siop_perc_of_bc_x100 625 percentange * 100 of cache to transfer to shared io pool
_sixteenth_spare_parameter sixteenth spare parameter - integer
_sixteenth_spare_pdb_parameter sixteenth spare pdb parameter - integer
_sixth_spare_parameter sixth spare parameter - integer
_sixth_spare_pdb_parameter sixth spare pdb parameter - integer
_sixtieth_spare_parameter sixtieth spare parameter - integer
_sixtieth_spare_pdb_parameter sixtieth spare pdb parameter - boolean
_sixty-eighth_spare_parameter sixty-eighth spare parameter - integer
_sixty-eighth_spare_pdb_parameter sixty-eighth spare pdb parameter - boolean
_sixty-fifth_spare_parameter sixty-fifth spare parameter - integer
_sixty-fifth_spare_pdb_parameter sixty-fifth spare pdb parameter - boolean
_sixty-first_spare_parameter sixty-first spare parameter - integer
_sixty-first_spare_pdb_parameter sixty-first spare pdb parameter - boolean
_sixty-fourth_spare_parameter sixty-fourth spare parameter - integer
_sixty-fourth_spare_pdb_parameter sixty-fourth spare pdb parameter - boolean
_sixty-ninth_spare_parameter sixty-ninth spare parameter - integer
_sixty-ninth_spare_pdb_parameter sixty-ninth spare pdb parameter - boolean
_sixty-second_spare_parameter sixty-second spare parameter - integer
_sixty-second_spare_pdb_parameter sixty-second spare pdb parameter - boolean
_sixty-seventh_spare_parameter sixty-seventh spare parameter - integer
_sixty-seventh_spare_pdb_parameter sixty-seventh spare pdb parameter - boolean
_sixty-sixth_spare_parameter sixty-sixth spare parameter - integer
_sixty-sixth_spare_pdb_parameter sixty-sixth spare pdb parameter - boolean
_sixty-third_spare_parameter sixty-third spare parameter - integer
_sixty-third_spare_pdb_parameter sixty-third spare pdb parameter - boolean
_size_of_log_table 100 modifying this hidden parameter, will modify the sizeof the v$gcr_log
_skgxp_ant_options SKGXP ANT options (oss)
_skgxp_ctx_flags1 0 IPC debug options flags (oss)
_skgxp_ctx_flags1mask 0 IPC debug options flags mask (oss)
_skgxp_dynamic_protocol 0 IPC protocol override (!0/-1=*,2=UDP,3=RDS,0x1000=ipc_X)
_skgxp_gen_ant_off_rpc_timeout_in_sec 30 VRPC request timeout when ANT disabled
_skgxp_gen_ant_ping_misscount 3 ANT protocol ping miss count
_skgxp_gen_rpc_no_path_check_in_sec 5 ANT ping protocol miss count
_skgxp_gen_rpc_timeout_in_sec 300 VRPC request timeout when ANT enabled
_skgxp_inets limit SKGXP networks (oss)
_skgxp_min_rpc_rcv_zcpy_len 0 IPC threshold for rpc rcv zcpy operation (default = 0 - disabled)
_skgxp_min_zcpy_len 0 IPC threshold for zcpy operation (default = 0 - disabled)
_skgxp_reaping 1000 tune skgxp OSD reaping limit
_skgxp_rgn_ports 0 region socket limits (0xFFFFNNXX): F=flags, N=min, X=max
_skgxp_spare_param1 ipc oss spare parameter 1
_skgxp_spare_param2 ipc oss spare parameter 2
_skgxp_spare_param3 ipc oss spare parameter 3
_skgxp_spare_param4 ipc oss spare parameter 4
_skgxp_spare_param5 ipc oss spare parameter 5
_skgxp_udp_ach_reaping_time 120 time in minutes before idle ach's are reaped
_skgxp_udp_ack_delay 0 Enables delayed acks
_skgxp_udp_enable_dynamic_credit_mgmt 0 Enables dynamic credit management
_skgxp_udp_hiwat_warn 1000 ach hiwat mark warning interval
_skgxp_udp_interface_detection_time_secs 60 time in seconds between interface detection checks
_skgxp_udp_keep_alive_ping_timer_secs 300 connection idle time in seconds before keep alive is initiated. min: 3
_skgxp_udp_lmp_mtusize 0 MTU size for UDP LMP testing
_skgxp_udp_lmp_on FALSE enable UDP long message protection
_skgxp_udp_timed_wait_buffering 1024 diagnostic log buffering space (in bytes) for timed wait (0 means unbu
_skgxp_udp_timed_wait_seconds 5 time in seconds before timed wait is invoked
_skgxp_udp_use_tcb TRUE disable use of high speek timer
_skgxp_zcpy_flags 0 IPC zcpy options flags
_skgxpg_last_parameter 27 last defined skgxpg parameter - oss
_skip_acfs_checks FALSE Override checking if on an ACFS file system
_skip_adding_plsql_negative_dep FALSE If enabled then skip adding plsql negative dependency
_skip_app_object_check FALSE Skip application object checks
_skip_app_unconverted_check FALSE Skip application unconverted check
_skip_assume_msg TRUE if TRUE, skip assume message for consigns at the director
_skip_cursor_syspriv_rechecks FALSE skip re-authorization of session cached cursors
_skip_fixed_dependency_load_during_drop FALSE skip load of fixed object dependency during drop
_skip_multiple_svc_netname_convert_patterns FALSE skip apply multiple patterns on a network name during serv
_skip_oradism_check FALSE Switch on all features for the purpose of testing
_skip_pdb_ddl_replay FALSE Skip Common DDL replay
_skip_pdb_recovery_if_keystore_not_open FALSE Skip PDB recovery when the PDB's keystore is not open
_skip_pdbid PDBIDs to be skipped during init of kpdblist from control file
_skip_pset_col_chk 0 skip validation of partition set keys in DML
_skip_sequence_cache_close_immediate FALSE Skip sequence cache flush on pdb shutdown immediate
_skip_trstamp_check TRUE Skip terminal recovery stamp check
_skip_unconverted_change_vector FALSE Skip apply of a CV that has no endian conversion function
_skip_upg_prechecks_on_pdb_open FALSE Skip upgrade prechecks on PDB open
_skip_view_dependent_invalidation FALSE Skip dependent object invalidation for view
_skippriv_emailserver_credential FALSE Skip execute privilege check on scheduler email server credential
_slave_mapping_enabled TRUE enable slave mapping when TRUE
_slave_mapping_group_size 0 force the number of slave group in a slave mapper
_slave_mapping_skew_handling TRUE enables skew handling for slave mapping plans
_slave_mapping_skew_ratio 2 maximum skew before slave mapping is disabled
_slow_kill_on_pdb_close_immediate FALSE Kill sessions gradually on pdb close immediate
_slow_kill_rate_on_pdb_close_immediate 5 Rate of killing sessions gradually on pdb close immediate
_small_table_threshold 12335 lower threshold level of table size for direct reads
_smart_scan_object_size_threshold 100 lower threshold of object size in MB for smartscan offload
_smm_advice_enabled TRUE if TRUE, enable v$pga_advice
_smm_advice_log_size 0 overwrites default size of the PGA advice workarea history log
_smm_auto_cost_enabled TRUE if TRUE, use the AUTO size policy cost functions
_smm_auto_max_io_size 248 Maximum IO size (in KB) used by sort/hash-join in auto mode
_smm_auto_min_io_size 56 Minimum IO size (in KB) used by sort/hash-join in auto mode
_smm_bound 0 overwrites memory manager automatically computed bound
_smm_control 0 provides controls on the memory manager
_smm_freeable_retain 5120 value in KB of the instance freeable PGA memory to retain
_smm_isort_cap 102400 maximum work area for insertion sort(v1)
_smm_low_mem_bound_diag_threshold 0 low memory bound threshold to trigger diagnostic dump
_smm_max_size 243090 maximum work area size in auto mode (serial)
_smm_max_size_static 243090 static maximum work area size in auto mode (serial)
_smm_min_size 1024 minimum work area size in auto mode
_smm_px_max_size 1215488 maximum work area size in auto mode (global)
_smm_px_max_size_static 1215488 static maximum work area size in auto mode (global)
_smm_retain_size 0 work area retain size in SGA for shared server sessions (0 for AUTO)
_smm_trace 0 Turn on/off tracing for SQL memory manager
_smon_internal_errlimit 100 limit of SMON internal errors
_smon_ofd_sleep_interval 300 smon sleep internval for undo ofd test
_smon_sort_management 0 Control SMON or SMCO process sort segment management message
_smon_undo_seg_rescan_limit 10 limit of SMON continous undo segments re-scan
_smtp_auth_failure_logging FALSE Cloud Logging of SMTP Authentication Failures
_smtp_usage_disallowed_users List of users disallowed from using UTL_SMTP inside the PDB
_smu_debug_mode 0 <debug-flag> - set debug event for testing SMU operations
_smu_error_simulation_site 0 site ID of error simulation in KTU code
_smu_error_simulation_type 0 error type for error simulation in KTU code
_smu_timeouts comma-separated *AND double-quoted* list of AUM timeouts: mql, tur, se
_snapshot_recovery_enabled TRUE enable/disable snapshot recovery
_so_percent_lower_bound_final 80 SO percent lower bound final
_so_percent_lower_bound_strt 60 SO percent lower bound start
_so_percent_upper_bound_final 90 SO percent upper bound final
_so_percent_upper_bound_strt 70 SO percent upper bound start
_sort_elimination_cost_ratio 0 cost ratio for sort eimination under first_rows mode
_sort_multiblock_read_count 2 multi-block read count for sort
_sort_spill_threshold 0 force sort to spill to disk each time this many rows are received
_sort_sync_min_spill_threshold 90 controls the mininum spill size for synchronized spill (in percent)
_sort_sync_min_spillsize 262144 controls the size of mininum run size for synchronized spill (in kb)
_space_align_size 1048576 space align size
_space_diag_test 0 Exercise space management diagnostics
_space_objd_mismatch 1 Control objd mismatch diagnostics
_spacebg_sync_segblocks TRUE to enable/disable segmon driver
_spacereuse_track_memlimit 10 Percentage of shared pool for use by spacereuse tracking
_spadr NO _SPADR
_spare_ksp_ktucts1 0 spare duality view directive ksp parameter
_spare_test_parameter 0 Spare test parameter
_sparse_backing_file AVM specifies sparse backing file
_spawn_diag_opts 0 thread spawn diagnostic options
_spawn_diag_thresh_secs 30 thread spawn diagnostic minimal threshold in seconds
_spec_replace_locks_body TRUE Lock body when replacing a package specification
_spfdc OFF SPFDC
_spfei SPFEI
_spfile_comment_validation_mode DISABLE Validate parameter comment format
_spfoc OFF SPFOC
_spin_count 2000 Amount to spin waiting for a latch
_split_app_current_state TRUE Use _CURRENT_STATE_CDB object to sync CDB-wide apps
_split_file_copy TRUE Enable block-level parallelism for file copy in Create PDB
_split_partition_target_timeout 600 set splitpartitionset wait timeout
_spr_max_rules 10000 maximum number of rules in sql spreadsheet
_spr_push_pred_refspr TRUE push predicates through reference spreadsheet
_spr_use_AW_AS TRUE enable AW for hash table in spreadsheet
_sql_alias_scope TRUE Use only SQL name resolution for a column whose alias matches that of
_sql_analysis TRUE enable SQL analysis for reporting in plan
_sql_analyze_enable_auto_txn FALSE SQL Analyze Autonomous Transaction control parameter
_sql_analyze_parse_model 2 SQL Analyze Parse Model control parameter
_sql_compatibility 0 sql compatability bit vector
_sql_connect_capability_override 0 SQL Connect Capability Table Override
_sql_connect_capability_table SQL Connect Capability Table (testing only)
_sql_diag_repo_origin all duarations where sql diag repository are retained
_sql_diag_repo_retain retain sql diag repository to cursor or not
_sql_error_mitigation_control 0 internal controls for auto error mitigation
_sql_error_mitigation_patch_ems_threshold 2 Threshold of upgrading from EMS to FMS patches
_sql_error_mitigation_patch_validation_interval 30 Minimum interval (days) to revalidate auto SQL patches
_sql_error_mitigation_repeat_wait 86400 minimum wait time (seconds) between repeated mitigations
_sql_error_mitigation_retention 53 Auto error mitigation diagnostic tables retention period (weeks)
_sql_error_mitigation_time_limit 600 maximum time limit (seconds) for error mitigation
_sql_hash_debug 0 Hash value of the SQL statement to debug
_sql_history_buffers 50 Min number of sql query history buffers to be monitored
_sql_hvshare_debug 1 control hash value sharing debug level
_sql_hvshare_threshold 0 threshold to control hash value sharing across operators
_sql_model_unfold_forloops RUN_TIME specifies compile-time unfolding of sql model forloops
_sql_ncg_mode OFF Optimization mode for SQL NCG
_sql_plan_directive_mgmt_control 67 controls internal SQL Plan Directive management activities
_sql_plan_management_comp_metric 3 controls metric used in comparing performance of plans in SPM
_sql_plan_management_control 0 controls various internal SQL Plan Management algorithms
_sql_show_expreval FALSE show expression evalution as shared hash producer in plan
_sqlexec_aggregation_settings 0 runtime settings for aggregation
_sqlexec_bitmap_options 0 settings for bitmap count distinct optimizations
_sqlexec_bitmap_sparse_size 100 maximum number of sparse bitmap values
_sqlexec_cache_aware_hash_aggr_enabled TRUE enable/disable cache aware hash aggregation
_sqlexec_cache_aware_hash_join_enabled TRUE enable/disable cache aware hash join
_sqlexec_disable_hash_based_distagg_tiv FALSE disable hash based distinct aggregation in TIV for gby queries
_sqlexec_distagg_optimization_settings 0 settings for distinct aggregation optimizations
_sqlexec_encoding_aware_hj_enabled TRUE enable/disable encoding aware hash join
_sqlexec_encoding_aware_hj_min_compression_ratio 8 minimum compression ratio to leverage encoding for HJ probe
_sqlexec_hash_aggr_small_mem_blocks 2 hash aggregation small initial memory footprint number of blocks
_sqlexec_hash_based_distagg_enabled TRUE enable hash based distinct aggregation for gby queries
_sqlexec_hash_based_distagg_ser_civ_enabled TRUE enable hash based distinct aggregation in serial/CIV queries
_sqlexec_hash_based_distagg_ssf_enabled TRUE enable hash based distinct aggregation for single set gby queries
_sqlexec_hash_based_set_operation_enabled TRUE enable/disable hash based set operation
_sqlexec_hash_join_uses_xmem FALSE enable/disable xmem PGA for hash join areas
_sqlexec_hash_rollup_enabled TRUE enable hash rollup
_sqlexec_join_group_aware_hj_enabled TRUE enable/disable join group aware hash join
_sqlexec_join_group_aware_hj_unencoded_rowsets_tol 50 minimum number of unencoded rowsets processed before adaptation
erated
_sqlexec_pwiseops_with_binds_enabled TRUE enable partition wise execution in the presence of bind variables in i
_sqlexec_pwiseops_with_sqlfuncs_enabled TRUE enables partition wise operations even in the presence of functions ov
_sqlexec_reorder_wif_enabled TRUE enable re-ordering of window functions
_sqlexec_sort_uses_xmem TRUE enable/disable xmem PGA for sort areas
_sqlexec_use_delayed_unpacking TRUE enable/disable the usage of delayed unpacking
_sqlexec_use_kgghash3 TRUE use CRC-based hash function
_sqlexec_use_rwo_aware_expr_analysis TRUE enable/disable the usage of row vector aware expression analysis
_sqlexec_window_function_settings 63 execution settings for window functions
_sqlmon_all_rows_numpdb_threshold 10 Return 100% of rows if active PDB count is below this cutoff.
_sqlmon_binds_xml_format default format of column binds_xml in [G]V$SQL_MONITOR
_sqlmon_conitr_row_cache_size 50 Cache size for rows from keomnRefreshCacheFromPdbSwitchCbk()
_sqlmon_entry_cutoff_end_time 0 Cutoff end time offset (in seconds) for monitored entries during scan
_sqlmon_entry_cutoff_start_time 3600 Cutoff start time offset (in seconds) for monitored entries during sca
_sqlmon_max_active_idle 0 Time (in sec) after which a SQL Monitor entry can be reclaimed
_sqlmon_max_plan 80 Maximum number of plans entry that can be monitored. Defaults to 20 pe
_sqlmon_max_planlines 1000 Number of plan lines beyond which a plan cannot be monitored
_sqlmon_max_recent_rows_per_pdb 0 Max rows fetched from PDB during scan of [G]V$RECENT_SQL_MONITOR
_sqlmon_recent_query_max_time 2 Time limit for CDB-optimized scan of [G]V$RECENT_SQL_MONITOR
_sqlmon_recycle_time 5 Minimum time (in s) to wait before a plan entry can be recycled
_sqlmon_threshold 5 CPU/IO time threshold before a statement is monitored. 0 is disabled
_sqlset_hash_max_size 100000 Max size of hash table used when loading into a SQL set
_sqltune_category_parsed DEFAULT Parsed category qualifier for applying hintsets
_srvntfn_job_deq_timeout 60 srvntfn job deq timeout
_srvntfn_jobsubmit_interval 3 srvntfn job submit interval
_srvntfn_max_concurrent_jobs 20 srvntfn max concurrent jobs
_srvntfn_max_job_time 180 srvntfn max time per job
_srvntfn_q_msgcount 50 srvntfn q msg count for job exit
_srvntfn_q_msgcount_inc 100 srvntfn q msg count increase for job submit
_sscr_dir Session State Capture and Restore DIRectory object
_sscr_osdir Session State Capture and Restore OS DIRectory
_sta_control 0 SQL Tuning Advisory control parameter
_stack_guard_level 0 stack guard level
_standard_varchar_storage FALSE controls storage format for extended VARCHAR2 and NVARCHAR2 data type
_standby_auto_flashback TRUE Standby automatic flashback when primary flashed back
_standby_causal_heartbeat_timeout 2 readable standby causal heartbeat timeout
_standby_flush_mode SLFLUSH standby flush mode
_standby_implicit_rcv_timeout 3 minutes to wait for redo during standby implicit recovery
_standby_newkey_keystore_location Location of keystore on standby having new key
_standby_switchover_timeout 120 Number of secords for standby switchover enqueue timeout
_standby_temp_file_management AUTO tempfile management on standby databases
_start_service_on_logon TRUE Start tp or tpurgent service on logging into pdb in ADBS
_stat_aggs_one_pass_algorithm FALSE enable one pass algorithm for variance-related functions
_statement_redirect_host statement redirect host
_statement_redirect_routing_function statement redirect routing function
_static_backgrounds static backgrounds
_statistics_based_srf_enabled TRUE enable/disable the use of statistics for storage reduction factor
_stats_encryption_enabled FALSE Enable statistics encryption on sensitive data
_step_down_limit_in_pct 20 step down limit in percentage
_streams_pool_max_size 0 streams pool maximum size when auto SGA enabled
_strict_dml_data_link FALSE Enable strict semantics for DML into [Extended] Data Link
_strict_redaction_semantics TRUE Strict Data Redaction semantics
_strict_utl_http_smtp FALSE Enforce strict URL checks on UTL_HTTP and UTL_SMTP Packages
_subname_for_object_patching subname used to create a duplicate object for patching
_subquery_pruning_cost_factor 20 subquery pruning cost factor
_subquery_pruning_enabled TRUE enable the use of subquery predicates to perform pruning
_subquery_pruning_flags 0 subquery pruning flags
_subquery_pruning_mv_enabled FALSE enable the use of subquery predicates with MVs to perform pruning
_subquery_pruning_reduction 50 subquery pruning reduction factor
_subseg_debug 0 KTSV Subseg Debug
_subseg_key 0 KTSV Subseg Key
_subseg_kotscan 0 KTSV Subseg Key Organized Table SCAN
_subseg_quiesce_threshold 10240 KTSV threshold size for loading to new subseg in MB
_suffix_for_object_patching suffix used to create a duplicate object for patching
_super_shared_conversion_threshold 320 conversion threshold limit for supershared mode
_super_shared_enable FALSE enable super shared mode for latches
_super_shared_max_exclusive_conversions 4 Maximum consecutive exclusive conversions to convert a super shared la
_suppress_identifiers_on_dupkey FALSE supress owner index name err msg
_suppress_migration_errors TRUE Suppress migration errors during Application Sync
_suppress_pg_population FALSE If true, all graph populations are suppressed
_suspend_4031_timeout 14400 sga timeout in seconds for 4031
_suspend_4036_timeout 14400 pga timeout in seconds for 4036
_suspended_session_timeout 300 Timeout to kill suspended sess aft switchover
_sv_waiters_cap 4294967294 max. amount of waiters allowed per enhancement.
_swat_ver_mv_knob 0 Knob to control MV/REWRITE behavior
_switch_current_scan_scn TRUE switch current uses scan scn
_switchover_through_cascade TRUE Enable switchover through farsync
_switchover_timeout 0 Switchover timeout in minutes
_switchover_to_standby_option OPEN_ALL_IGNORE_SESS option for graceful switchover to standby
IONS
_switchover_to_standby_switch_log FALSE Switchover to standby switches log for open redo threads
_swrf_metric_frequent_mode FALSE Enable/disable SWRF Metric Frequent Mode Collection
_swrf_mmon_dbfus TRUE Enable/disable SWRF MMON DB Feature Usage
_swrf_mmon_flush TRUE Enable/disable SWRF MMON FLushing
_swrf_mmon_metrics TRUE Enable/disable SWRF MMON Metrics Collection
_swrf_on_disk_enabled TRUE Parameter to enable/disable SWRF
_swrf_test_action 0 test action parameter for SWRF
_swrf_test_dbfus FALSE Enable/disable DB Feature Usage Testing
_symbol_no_translation FALSE disable symbol tranlations in call stacks
_sync_app_pdb_first_open FALSE sync application PDB automatically on first open
_sync_error_handler error handler function for Application Sync
_sync_primary_wait_time 5 wait time for alter session sync with primary
_synchronous_rewrap_rac_ts_keys FALSE if TRUE, synchronously rewrap TS keys in all nodes in MK rekey
_synonym_repoint_tracing FALSE whether to trace metadata comparisons for synonym repointing
_sys_logon_delay 1 The failed logon delay for the database instance
_sysaux_test_param 1 test parameter for SYSAUX
_system_api_interception_debug FALSE enable debug tracing for system api interception
_system_index_caching 0 optimizer percent system index caching
_system_memory_simulate FALSE system memory simulation mode, TRUE for hugetlbfs simulation
_system_parse_limit_seconds 120 System cursor parse time limit (seconds)
_system_partition_with_default FALSE allow default partition for system partitioned tables
_system_state_cputime_limit 4294967294 cputime limit for system state dump
_system_state_runtime_limit 4294967294 runtime limit for system state dump
_system_trig_enabled TRUE are system triggers enabled
_tabdict_background_update TRUE enable tabdict update in the background
_table_cache_data_share FALSE Table Cache for Data Share
_table_func_pred_pushdown FALSE enable table function predicate pushdown
_table_lookup_prefetch_size 40 table lookup prefetch vector size
_table_lookup_prefetch_thresh 2 table lookup prefetch threshold
_table_scan_cost_plus_one TRUE bump estimated full table scan and index ffs cost by one
_tablespaces_per_transaction 10 estimated number of tablespaces manipulated by each transaction
_target_action_name list of Target Action Names
_target_log_write_size 0 Write size (in blocks) for overlapped redo writes
_target_log_write_size_percent_for_poke 100 Ask LGWR to write if strand has this % of target write size blocks
_target_log_write_size_spinwait 0 Use a spin wait and not a sleep in waiting for target write size
_target_log_write_size_timeout 0 Maximum timeout (msecs) to wait for overlapped redo writes
_target_module_name list of Target Module Names
_target_offload FALSE enable target offload functionality
_target_offload_algorithm random algorithm for choosing target for offload
_target_offload_pdb target pdb ocid for offload
_target_offload_svcpattern target svc pattern for offload
_target_rba_max_lag_percentage 81 target rba max log lag percentage
_tcpinfo_statistics_save_atexit FALSE TCP Info Statistics Save At Exit
_tdb_debug_mode 16 set debug mode for testing transportable database
_temp_tran_block_threshold 100 number of blocks for a dimension before we temp transform
_temp_tran_cache TRUE determines if temp table is created with cache option
_temp_undo_disable_adg FALSE is temp undo disabled on ADG
_temp_undo_disable_refresh_clone FALSE is temp undo disabled on refreshable clone PDB
_temp_undo_optimal_extents 0 optimal number of extents for temp undo
_tempfile_monitor_interval 3600 tempfile monitor interval in seconds
_tempspace_prereuse_exts 1024 minimum temp extents to reuse/steal proactively
_tempspace_tsenq_timeout 600 amount of time(in seconds) to wait for acquiring TS enq
_tenth_spare_parameter tenth spare parameter - integer
_tenth_spare_pdb_parameter tenth spare pdb parameter - integer
_test_flashback_shrink 0 test flashback datafile shrink feature
_test_hm_extent_map FALSE heatmap related - to be used by oracle dev only
_test_ksusigskip 5 test the function ksusigskip
_test_offload_pdb_sga_init FALSE Test offload of PDB SGA creation
_test_param_1 25 test parmeter 1 - integer
_test_param_10 test parameter 10 - string param
_test_param_10_bi 10 test parameter 10 - bigint param
_test_param_10_i test parameter 10 - int param
_test_param_11_base 3 test parameter 11 base
_test_param_11_dep 0_STARTUP, 1_STARTUP test parameter 11 dependent
, 2_STARTUP
_test_param_12 0 test parameter 12 - int param
_test_param_13 FALSE test parmeter 13 - boolean
_test_param_14 test parmeter 14 - string list
_test_param_15 50 test parmeter 15 - integer
_test_param_16 500 test parmeter 16 - integer
_test_param_17 0 test parmeter 17 - integer - NOUSRMOD
_test_param_2 test parameter 2 - string
_test_param_3 test parameter 3 - string
_test_param_4 test parameter 4 - string list
_test_param_4_1 test parameter 4_1 - nonsys mod. string list
_test_param_5 25 test parmeter 5 - deprecated integer
_test_param_6 0 test parmeter 6 - size (ub8)
_test_param_7 100, 1100, 2100, 310 test parameter 7 - big integer list
0, 4100
_test_param_8 20 test parameter 8 - cdb tests
_test_param_9 test parameter 9 - umbrella param
_test_param_9_1 0 test parameter 9_1 - cascade param1
_test_param_9_2 0_startup test parameter 9_2 - cascade param2
_test_param_9_3 1_startup, 2_startup test parameter 9_3 - cascade param3
, 3_startup
_test_param_pdb_spare test parameter pdb spare
_test_param_spare test parameter spare
_test_trans_hnsw_vector_scan FALSE Test Parameter for kdivs transaction tests
_test_trans_hnsw_vector_scan_user_id 0 Test Parameter for kdivs transaction tests
_test_xmem_alloc_size 0 unit test xmem alloc size
_text_batch_num 32 Text number of batches
_text_batch_size 8 Text batch size in Mb
_text_datastore_access FALSE Oracle Text alternate datastore default settings
_text_estat_purge 30 Text event stats purge interval in days
_text_event_sizing 3 Text event sizing level
_text_maintenance auto Text default maintenance setting
_tgtt_single_segment FALSE Whether to use single segment for trans GTTs
_third_spare_parameter third spare parameter - integer
_third_spare_pdb_parameter third spare pdb parameter - integer
_thirteenth_spare_parameter thirteenth spare parameter - integer
_thirteenth_spare_pdb_parameter thirteenth spare pdb parameter - integer
_thirtieth_spare_parameter thirtieth spare parameter - integer
_thirtieth_spare_pdb_parameter thirtieth spare pdb parameter - string
_thirty-eighth_spare_parameter thirty-eighth spare parameter - integer
_thirty-eighth_spare_pdb_parameter thirty-eighth spare pdb parameter - string
_thirty-fifth_spare_parameter thirty-fifth spare parameter - integer
_thirty-fifth_spare_pdb_parameter thirty-fifth spare pdb parameter - string
_thirty-first_spare_parameter thirty-first spare parameter - integer
_thirty-first_spare_pdb_parameter thirty-first spare pdb parameter - string
_thirty-fourth_spare_parameter thirty-fourth spare parameter - integer
_thirty-fourth_spare_pdb_parameter thirty-fourth spare pdb parameter - string
_thirty-ninth_spare_parameter thirty-ninth spare parameter - integer
_thirty-ninth_spare_pdb_parameter thirty-ninth spare pdb parameter - string
_thirty-second_spare_parameter thirty-second spare parameter - integer
_thirty-second_spare_pdb_parameter thirty-second spare pdb parameter - string
_thirty-seventh_spare_parameter thirty-seventh spare parameter - integer
_thirty-seventh_spare_pdb_parameter thirty-seventh spare pdb parameter - string
_thirty-sixth_spare_parameter thirty-sixth spare parameter - integer
_thirty-sixth_spare_pdb_parameter thirty-sixth spare pdb parameter - string
_thirty-third_spare_parameter thirty-third spare parameter - integer
_thirty-third_spare_pdb_parameter thirty-third spare pdb parameter - string
_thread_state_change_timeout_pnp 1800 Thread state change timeout for PnP instance (in sec)
_threaded_execution FALSE Threaded Execution Mode Internal
_threshold_alerts_enable 1 if 1, issue threshold-based alerts
_time_based_rcv_ckpt_target 180 time-based incremental recovery checkpoint target in sec
_time_based_rcv_hdr_update_interval 180 time-based incremental recovery file header update interval in sec
_time_threshold_to_reboot_mmon_slv 86400 Time threshold to reboot MMON slave processes
_timemodel_collection TRUE enable timemodel collection
_timeout_actions_enabled TRUE enables or disables KSU timeout actions
_timer_precision 10 VKTM timer precision in milli-sec
_timetravel_lwscn_check_override FALSE override low water mark scn comparision
_tkh_in_fsc_per_ts 5 Max tkh records stored in FSC per table space
_total_large_extent_memory 0 Total memory for allocating large extents
_touch_sga_pages_during_allocation FALSE touch SGA pages during allocation
_tq_dump_period 0 time period for duping of TQ statistics (s)
_trace_buffer_wait_timeouts 0 trace buffer busy wait timeouts
_trace_buffers ALL:256 trace buffer sizes per process
_trace_dump_all_procs FALSE if TRUE on error buckets of all processes will be dumped to the curren
_trace_dump_client_buckets TRUE if TRUE dump client (ie. non-kst) buckets
_trace_dump_cur_proc_only FALSE if TRUE on error just dump our process bucket
_trace_dump_static_only FALSE if TRUE filter trace dumps to always loaded dlls
_trace_events trace events enabled at startup
_trace_files_public FALSE Create publicly accessible trace files
_trace_kqlidp FALSE trace kqlidp0 operation
_trace_ktds FALSE Trace block reuse
_trace_ktfs FALSE Trace ILM Stats Tracking
_trace_ktfs_mem FALSE Debug memleak
_trace_logging_from_root FALSE true if object store write is allowed from root
_trace_logging_uri object store uri where trace is uploaded
_trace_navigation_scope global enabling trace navigation linking
_trace_pin_time FALSE trace how long a current pin is held
_trace_pool_size trace pool size in bytes
_trace_processes ALL enable KST tracing in process
_trace_suppress suppresses matching trace for a given substring(prefix)
_trace_suppress_disable FALSE Disable trace suppress feature
_trace_temp FALSE Trace Tempspace Management
_trace_virtual_columns FALSE trace virtual columns exprs
_track_app_list List of applications to track statement level replay timing
_track_app_sync FALSE Track statement level sync timing for this PDB
_track_metrics_memory TRUE Enable/disable Metrics Memory Tracking
_track_space_reuse FALSE SpaceReuse Tracking
_track_space_reuse_rac FALSE SpaceReuse Tracking Enable in RAC
_transaction_auditing TRUE transaction auditing records generated in the redo log
_transaction_recovery_servers 0 max number of parallel recovery slaves that may be used
_transient_logical_clear_hold_mrp_bit FALSE clear KCCDI2HMRP flag during standby recovery
_true_cache_aff_hash_latches 16 True Cache affinity table latches
_true_cache_block_fetch_abort_timeout 20000 True Cache block fetch abort time out in centiseconds
_true_cache_block_fetch_latency_histogram TRUE Enable True Cache block fetch latency histogram
_true_cache_block_fetch_latency_limit 5000 True Cache block fetch latency in usec considered too large
_true_cache_block_fetch_latency_trace FALSE Enable True Cache block fetch latency trace
_true_cache_block_fetch_timeout 300 True Cache block fetch time out in centiseconds
_true_cache_chore_mask 3 True Cache health chore mask
_true_cache_dest True Cache destinations server list
_true_cache_disable_caps 0 True Cache disabled capabilities mask
_true_cache_disc_time 86400 True Cache disconnect time
_true_cache_fault_tolerance_degree HIGH True Cache Fault tolerance degree
_true_cache_flt_dict_lmt 350 True Cache Fault tolerance dictionary prefetch limit
_true_cache_flt_max_cache_threshold_percent 10 True Cache max percent of pool size upto which fault tolerance can cac
_true_cache_flt_min_cache_threshold_percent 5 True Cache minimum percent of pool size that fault tolerance can cache
_true_cache_flt_min_db_cache_sz 3221225472 True Cache minimum db_cache_size for HA mode to kick in
_true_cache_flt_min_sga_tgt 0 True Cache minimum sga_target for HA mode to kick in
_true_cache_flt_minactscn_apply 1 True Cache Fault tolerance minact scn applicability
_true_cache_flt_tracing 0 True Cache Fault tolerance tracing and debugging
_true_cache_heartbeat_interval 60 True Cache heartbeat interval
_true_cache_lad_max_failure 20 True Cache max LAD failures
_true_cache_lad_nettimeout 30 True Cache LAD net timeout time
_true_cache_lad_reopen 15 True Cache LAD reopen time
_true_cache_latch_less_htab FALSE Latchless affinity hash table access
_true_cache_link_object_queue FALSE True Cache to link buffers to object queue or not
_true_cache_max_block_fetch_requests 1024 True Cache maximum outstanding block fetch requests
_true_cache_max_payload 1048576 True Cache max batch payload size
_true_cache_max_unapplied_logs 10 True Cache max unapplied log files
_true_cache_num_batch_requests 4 True Cache number of request to batch
_true_cache_num_dsndr_process 1 True Cache number of data send process
_true_cache_num_fch_process 1 True Cache number of data request process
_true_cache_payload_size 65536 True Cache RMI payload size
_true_cache_pdb_disc_time 3600 True Cache PDB disconnect time
_true_cache_preallocate_num_request 1024 True Cache number of request to preallocate
_true_cache_prewarm_enable TRUE Enable TRUE CACHE prewarming. If disabled on primary, all True Cachere
_true_cache_prewarm_tracing 0 Enable TRUE CACHE prewarm tracing
_true_cache_primary_cleanout TRUE Enable primary block cleanout for True Cache
_true_cache_pw_collect_pct 100 Percent of Cache to scan to collect TRUE CACHE prewarm blocks
_true_cache_pw_helpers 0 Number of processes TRUE CACHE prewarm should use to prefetch
_true_cache_pw_prefetch_count 128 Number of blocks TRUE CACHE prewarm should prefetch at a time
_true_cache_restart_timeout_secs 600 True Cache restart timeout
_true_cache_send_buffer 2 True Cache send buffer size
_true_cache_simulated_caps 1 True Cache simulated capabilities mask
_true_cache_temp_file_ext 10 True Cache default temp file extend
_true_cache_temp_file_size 100 True Cache default temp file size
_true_cache_wait_pdbopen 0 True Cache wait for PDB open at startup
_truncate_optimization_enabled TRUE do truncate optimization if set to TRUE
_tsenc_obfuscate_key NONE Encryption key obfuscation in memory
_tsenc_tracing 0 Enable TS encryption tracing
_tsm_connect_string TSM test connect string
_tsm_disable_auto_cleanup 1 Disable TSM auto cleanup actions
_tsq_shared_enabled TRUE Enable shared mode on tsq
_tstz_localtime_bypass FALSE Should TTC not convert to LocalTime to preserve Timestamp with Timezon
_ttc_annotations_level 0 enable ttc annotations
_tts_allow_charset_mismatch FALSE allow plugging in a tablespace with an incompatible character set
_tune_kctncv_diff_limit 134217728 Self-tune kctvncv diff limit for MTTR
_twelfth_spare_parameter twelfth spare parameter - integer
_twelfth_spare_pdb_parameter twelfth spare pdb parameter - integer
_twentieth_spare_parameter twentieth spare parameter - integer
_twentieth_spare_pdb_parameter twentieth spare pdb parameter - integer
_twenty-eighth_spare_parameter twenty-eighth spare parameter - integer
_twenty-eighth_spare_pdb_parameter twenty-eighth spare pdb parameter - string
_twenty-fifth_spare_parameter twenty-fifth spare parameter - integer
_twenty-fifth_spare_pdb_parameter twenty-fifth spare pdb parameter - string
_twenty-first_spare_parameter twenty-first spare parameter - integer
_twenty-first_spare_pdb_parameter twenty-first spare pdb parameter - string
_twenty-fourth_spare_parameter twenty-fourth spare parameter - integer
_twenty-fourth_spare_pdb_parameter twenty-fourth spare pdb parameter - string
_twenty-ninth_spare_parameter twenty-ninth spare parameter - integer
_twenty-ninth_spare_pdb_parameter twenty-ninth spare pdb parameter - string
_twenty-second_spare_parameter twenty-second spare parameter - integer
_twenty-second_spare_pdb_parameter twenty-second spare pdb parameter - string
_twenty-seventh_spare_parameter twenty-seventh spare parameter - integer
_twenty-seventh_spare_pdb_parameter twenty-seventh spare pdb parameter - string
_twenty-sixth_spare_parameter twenty-sixth spare parameter - integer
_twenty-sixth_spare_pdb_parameter twenty-sixth spare pdb parameter - string
_twenty-third_spare_parameter twenty-third spare parameter - integer
_twenty-third_spare_pdb_parameter twenty-third spare pdb parameter - string
_two-hundred-and-eighteenth_spare_parameter FALSE two-hundred-and-eighteenth spare parameter - boolean
_two-hundred-and-eighth_spare_parameter FALSE two-hundred-and-eighth spare parameter - boolean
_two-hundred-and-eleventh_spare_parameter FALSE two-hundred-and-eleventh spare parameter - boolean
_two-hundred-and-fifteenth_spare_parameter FALSE two-hundred-and-fifteenth spare parameter - boolean
_two-hundred-and-fifth_spare_parameter FALSE two-hundred-and-fifth spare parameter - boolean
_two-hundred-and-first_spare_parameter FALSE two-hundred-and-first spare parameter - boolean
_two-hundred-and-fourteenth_spare_parameter FALSE two-hundred-and-fourteenth spare parameter - boolean
_two-hundred-and-fourth_spare_parameter FALSE two-hundred-and-fourth spare parameter - boolean
_two-hundred-and-nineteenth_spare_parameter FALSE two-hundred-and-nineteenth spare parameter - boolean
_two-hundred-and-ninth_spare_parameter FALSE two-hundred-and-ninth spare parameter - boolean
_two-hundred-and-second_spare_parameter FALSE two-hundred-and-second spare parameter - boolean
_two-hundred-and-seventeenth_spare_parameter FALSE two-hundred-and-seventeenth spare parameter - boolean
_two-hundred-and-seventh_spare_parameter FALSE two-hundred-and-seventh spare parameter - boolean
_two-hundred-and-sixteenth_spare_parameter FALSE two-hundred-and-sixteenth spare parameter - boolean
_two-hundred-and-sixth_spare_parameter FALSE two-hundred-and-sixth spare parameter - boolean
_two-hundred-and-tenth_spare_parameter FALSE two-hundred-and-tenth spare parameter - boolean
_two-hundred-and-third_spare_parameter FALSE two-hundred-and-third spare parameter - boolean
_two-hundred-and-thirteenth_spare_parameter FALSE two-hundred-and-thirteenth spare parameter - boolean
_two-hundred-and-twelfth_spare_parameter FALSE two-hundred-and-twelfth spare parameter - boolean
_two-hundred-and-twentieth_spare_parameter FALSE two-hundred-and-twentieth spare parameter - boolean
_two-hundredth_spare_parameter FALSE two-hundredth spare parameter - boolean
_two_pass TRUE enable two-pass thread recovery
_two_pass_reverse_polish_enabled TRUE uses two-pass reverse polish alg. to generate canonical forms
_two_phase_rac_rolling_prepare_timeout 60 Prepare callback timeout for 2-Phase Rac Rolling in Seconds
_txeventq_dqlog_upd_chk TRUE Check the number of rows updated in the dequeue log
_txeventq_init_cache_startup 1 TxEventQ cache initialization on startup
_txeventq_lwm_msg_state_correction TRUE Enable correction of wrong message state for lwm advancement
_txeventq_raise_critical_error 8 Parameter to control raising critical error on failures
_txeventq_test_flags 0 TxEventQ test flags
_txn_commit_tracking_bg_interval 10000 KTCTI BG job interval
_txn_commit_tracking_minact_max_wait 10 KTCTI minact wait max wait time sec
_txn_commit_tracking_partition_capacity 20000 maximum partition size for commit_scn_log$
_txn_commit_tracking_test_flags 0 KTCTI test flags
_txn_control_trace_buf_size 4096 size the in-memory buffer size of txn control
_txn_max_quarantines 3 Max number of transaction that can be quarantined
_txn_notifications_sga_limit 10000000 Maximum notification private journal memory use per transaction
_txn_spare1 0 transaction spare variable1
_txn_spare2 0 transaction spare variable2
_txn_spare3 0 transaction spare variable3
_txn_timehouse_query_timeout 60 flashback query timeout value for a Timehouse table
_txn_timetravel_commit_scn 0 Time Travel DDL commit scn
_txn_timetravel_commit_time Time Travel commit timestamp
_txn_timetravel_custdb_alter_table FALSE Time Travel Customer DB allow ALTER TABLE
_txn_timetravel_ddl_xid Time Travel DDL XID
_txn_timetravel_instance 0 Enable time travel instance
_txn_trace_bucket_size 16384 Txn layer trace bucket size
_txn_trace_buckets Status of transaction layer buckets
_ub4_audit_sessionid FALSE Generate ub4 audit session id
_uga_cga_large_extent_size 262144 UGA/CGA large extent size
_ultrafast_latch_statistics TRUE maintain fast-path statistics for ultrafast latches
_um_huge_page_min_pct 60 Min percent of shared memory in UM backed by large pages
_umf_remote_enabled FALSE Enable remote UMF operations
_umf_remote_target_dblink UMF Remote Target DBLink for Flushing
_umf_test_action 0 test action parameter for UMF
_undo_autotune TRUE enable auto tuning of undo_retention
_undo_block_compression TRUE enable undo block compression
_undo_debug_mode 0 debug flag for undo related operations
_undo_debug_usage 0 invoke undo usage functions for testing
_undo_ofd_enabled TRUE enable ordered offline drop of undo segments for datafile shrink
_undo_ofd_excess 10 percent of excess undo segments to offline or drop
_undo_ofd_reserve 30 percent of excess undo segments to keep online
_undo_retention_time_limit 3600 undo retention time limit in seconds
_undo_tbs_slave_percent 0 Percentage of redo slaves for undo tablespace
_undotbs_regular_tables FALSE Create regular tables in undo tablespace
_undotbs_stepdown_pcent 75 Undo Tablespace small allocation step down percentage
_unified_audit_policy_disabled FALSE Disable Default Unified Audit Policies on DB Create
_unified_audit_trail_skip_delete_on_purge FALSE Skip the delete against Unified Audit Trail (UAT) during purge
_unified_memory_heap_mask 0 enable use of unified memory for these heaps
_unified_memory_pga_lim_pct 40 Percentage of pga limit in Unified Memory
_unified_memory_private_pct 20 Percentage of private memory in Unified Memory
_unified_memory_shared_pct 80 Percentage of shared memory in Unified Memory
_unified_pdb_shared_pct 60 UM Shared memory percent for a PDB
_unified_pga_alloc_wait_timeout 10000 UM allocation wait timeout
_unified_pga_block_size 262144 Unified PGA internal block size
_unified_pga_gran_free_timeout 3000 Granule free timeout
_unified_pga_gran_leak_timeout 180000 Granule leak timeout
_unified_pga_list_count 16 Unified PGA internal list count
_unified_pga_max_pool_size 0 max size in bytes of the unified pga pool
_unified_pga_pool_size 0 size in bytes of the unified pga pool
_union_rewrite_for_gs YES_GSET_MVS expand queries with GSets into UNIONs for rewrite
_uniq_cons_sql_enforcement TRUE disable extended data unique constraint SQL enforcement
_unnest_subquery TRUE enables unnesting of complex subqueries
_unused_block_compression TRUE enable unused block compression
_update_datafile_headers_with_space_information FALSE user requested update of datafile headers of locally managed datafiles
_upddel_dba_hash_mask_bits 0 controls masking of lower order bits in DBA
_upgrade_capture_noops TRUE do not skip capturing noops during upgrade
_upgrade_optim TRUE Upgrade optimization enabled
_upgrade_pdb_on_open TRUE Enable upgrading a PDB automatically on open
_usd_preload_blks 4 USD preload block count for prefetch
_usd_recent_read TRUE Allow to scan recent USD blocks
_use_adaptive_log_file_sync TRUE Adaptively switch between post/wait and polling
_use_aes128_redo_encryption FALSE If true, use AES128 encryption for redo
_use_best_fit FALSE use best fit to allocate space
_use_cached_asm_free_space FALSE Should x$kttets use cached ASM free space info
_use_column_stats_for_function TRUE enable the use of column statistics for DDP functions
_use_dynamic_shares 1 use dynamic shares
_use_external_data_cache TRUE Allow usage of external data cache
_use_fallocate_for_mga FALSE MGA fallocate enabled
_use_fips_mode FALSE Enable use of crypographic libraries in FIPS mode
_use_futex_ipc FALSE use futex ipc
_use_hugetlbfs_for_SGA FALSE Enable HugeTLBFS usage for SGA
_use_hugetlbfs_per_granule FALSE Enable file per granule with HugeTLBFS
_use_hybrid_encryption_mode FALSE Enable platform optimized encryption in hybrid mode
_use_ism TRUE Enable Shared Page Tables - ISM
_use_ism_for_pga TRUE Use ISM for allocating large extents
_use_kradc_fetch FALSE if TRUE, use kradc per process sync block fetch
_use_large_pages_for_mga FALSE MGA largepage enabled
_use_nosegment_indexes FALSE use nosegment indexes in explain plan
_use_pdb_parselock TRUE use PDB level parselock on ADG
_use_platform_compression_lib TRUE Enable platform optimized compression implementation
_use_platform_encryption_lib TRUE Enable platform optimized encryption implementation
_use_platform_hash_function TRUE control use of platform specific hash function
_use_pseudo_policy TRUE use pseudo policy for sensitive data handling
_use_realfree_heap TRUE use real-free based allocator for PGA memory
_use_seq_process_cache TRUE whether to use process local seq cache
_use_shared_capture FALSE Enable GoldenGate Extracts to use Shared Capture Service
_use_single_log_writer ADAPTIVE Use a single process for redo log writing
_use_stored_fgd TRUE Enable use of stored fine-grained delta for invalidations
_use_text_large_pages TRUE Use large pages for text if available
_use_vector_post TRUE use vector post
_use_zero_copy_io TRUE Should network vector IO interface be used for data transfer
_user_defined_sharding 0 enable user-defined sharding
_user_dual_pw User defaults to dual password lookup regardless of rollover status
_ut_fast_lrg_prediction FALSE use short interval for session SO prediction
_utl32k_mv_query FALSE utl32k.sql is compiling a materialized view query
_utlfile_buffer_putline FALSE Utl_File Buffer PUT_LINE
_utlfile_dirpath FALSE return Utl_File Accessible
_utlmmig_table_stats_gathering TRUE enable/disable utlmmig table stats gathering at upgrade
_uts_disable_client_ip_trace FALSE Disables the printing of client IP address in trace files
_uts_enable_alltrc_stats FALSE Enables accounting of trace data in incident and cdmp trace files
_uts_first_segment_retain TRUE Should we retain the first trace segment
_uts_first_segment_size 0 Maximum size (in bytes) of first segments
_uts_inc_inmem_trace 0 Controls UTS in-memory tracing during an active incident
_uts_trace_buffer_size 0 Trace disk buffer size
_uts_trace_disk_threshold 1073741824 Trace disk threshold parameter
_uts_trace_files_nopurge FALSE Sets trace files to not get purged
_uts_trace_segment_size 0 Maximum size (in bytes) of a trace segment
_uts_trace_segments 5 Maximum number of trace segments
_uxt_cloud_delete_on_drop_table TRUE Delete cloud files on drop of updatable external table
_uxt_credential credential name used for updatable external table data
_uxt_diag_flags 0 flags to enable diagnostics for updatable external tables
_uxt_uri_prefix URI prefix for updatable external tables
_validate_flashback_database FALSE Scan database to validate result of flashback database
_validate_metric_groups FALSE Enable/disable SGA Metric Structure validation
_validate_readmem_redo HEADER_ONLY validate redo blocks read from in-memory log buffer
_vault_based_password_auth TRUE Used to enable or disable vault based pwd authentication
_vector_accuracy_report_sample_size 25 vector accuracy report sample size
_vector_aggregation_max_size 0 max size of vector aggregation space
_vector_autogrow_sga_percent 70 Vector max memory size as SGA percent
_vector_debug 0 IMA vector memory debug
_vector_dense_accum_max 100 vector group by dense accumulator space max
_vector_distance_metric_default COSINE vector distance metric
_vector_encoding_mode MANUAL enable vector encoding(OFF/MANUAL/AUTO)
_vector_hnsw_cancel_ingest_task_retry 5 Vector HNSW index cancel ingest task retries
_vector_hnsw_cancel_ingest_task_timeout 5 Vector HNSW index cancel ingest task timout in sec
_vector_hnsw_enable_heuristic TRUE If true, the heuristic neighbor selection is enabled in HNSW
_vector_hnsw_force_seq_ingestion FALSE If true, the HNSW is loaded sequentially
_vector_hnsw_load_batch_size 500 Vector HNSW index ingestion batch size
_vector_hnsw_mem_overestimate_percent 10 Vector HNSW index memory overestimate percentage
_vector_hnsw_sparse_threshold 5000000 Vector HNSW index sparse bitset usage threshold
_vector_hnsw_stats_cache_enable TRUE Vector HNSW index statistics collection with cache
_vector_hnsw_stats_cache_mem_percent 5 Vector HNSW index statistics collection memory percentage
_vector_hnsw_stats_enable_accmap FALSE Enable/disable the neighbor graph accuracy map usage
_vector_hnsw_verification_lvl 0 Vector HNSW index verification level
_vector_index_calibration_dvsz 5000 Data vector batch size used for calibrating vector indexes
_vector_index_cleanup_build BACKGROUND Vector index build cleanup
_vector_index_cleanup_inline TRUE Vector index inline cleanup
_vector_index_compute_statistics TRUE enable/disable vector index compute statistics
_vector_index_ddl_deadlock_prevention_timeout 15000000 vector index deadlock prevention timeout usec
_vector_index_disable_directload FALSE disable direct load operations on tables with vector indexes
_vector_index_disable_pmop FALSE disable partition management operations on tables with vector indexes
_vector_index_dist_txn_support TRUE vector support dist txn with hnsw index
_vector_index_elastic_memory 0 vector index hnsw elastic memory flags
_vector_index_flush_batch_size 1024 vector index private journal array flush size
_vector_index_hnsw_buffer_lvector FALSE Vector HNSW index buffer lvectors
_vector_index_hnsw_checkpoint_enable TRUE vector hnsw index checkpoints enable
_vector_index_hnsw_checkpoint_rac_duplication TRUE vector hnsw index reload using checkpoints in rac duplication
_vector_index_hnsw_checkpoint_refresh AUTO specifies checkpoint creation policy during index refresh
_vector_index_hnsw_checkpoint_reload_enable TRUE vector hnsw index reload using checkpoints enable
_vector_index_hnsw_checkpoint_snapshot_threshold 5 vector hnsw index checkpoint snapshot threshold number
_vector_index_hnsw_cursor_invalidation 31 vector index hnsw cursor invalidation flags
_vector_index_hnsw_dist_enable TRUE vector distributed hnsw index enable
_vector_index_hnsw_dist_rac_disable_index_ktsjq_re 3 vector index hnswd rac disable index ktsjq retries
tries
_vector_index_hnsw_dist_rac_leader_stepdown_tout_m 5 vector index hnswd rac leader stepdown multiplier
ultiplier
_vector_index_hnsw_dist_rac_rcfg_index_open_graph_ 60 vector index hnswd rac rcfg index poll reply wait
reply_wait
_vector_index_hnsw_dist_rac_rcfg_index_poll_reply_ 60 vector index neighbor graph refresh rac poll reply wait
wait
_vector_index_hnsw_dist_rac_rcfg_poll_nap_time_bet 30 vector index hnswd rac rcfg poll nap time between epochs
ween_epochs
_vector_index_hnsw_dist_rac_rebuild_rcfg_threshold 3 vector index hnswd rac rebuild rcfg threshold
_vector_index_hnsw_dist_rac_reconfig 1 vector index hnsw dist rac reconfig
_vector_index_hnsw_dist_rac_reconfig_dbg 0 vector index hnsw dist rac reconfig dbg
_vector_index_hnsw_dist_rac_redist_rcfg_threshold 25 vector index hnswd rac redist rcfg threshold
_vector_index_hnsw_dist_rac_redistribute_poll_loca 16 vector index hnswd rac redistribute poll localq size
l_q_size
_vector_index_hnsw_dist_rac_redistribute_poll_retr vector index neighbor graph refresh rac poll retry count
y_count
_vector_index_hnsw_dist_redist_info_wait 180 vector index neighbor graph send redist info reply wait
_vector_index_hnsw_dist_repopulation_enable FALSE vector distributed hnsw repopulation enable
_vector_index_hnsw_dist_stubs_enable FALSE vector distributed hnsw index stubs enable
_vector_index_hnsw_distribution_unit_boundary_esti 0 vector distributed hnsw index distribution unit boundary estimate
mate
_vector_index_hnsw_distribution_unit_memory_limit 16 vector distributed hnsw index distribution unit memory limit
_vector_index_hnsw_dml_trigger_mode 3 vector index neighbor graph dml triger mode
_vector_index_hnsw_enable_local_hnsw_rac TRUE Enable/disable local HNSW vector index on RAC
_vector_index_hnsw_included_columns_enable TRUE HNSW index included columns enabled
_vector_index_hnsw_local_enable FALSE Enable/Disable local HNSW index
_vector_index_hnsw_optimizations 1 Vector index HNSW optimizations
_vector_index_hnsw_parallel_build_index_flag 0 vector hnsw parallel build index flag
_vector_index_hnsw_quiesce_readers_enable TRUE vector hnsw index refcount wait enable
_vector_index_hnsw_rac_duplication TRUE Duplicate HNSW in-memory on all instances
_vector_index_hnsw_rac_poll_interval 30 Duplicate HNSW in-memory on RAC Poll timeout
_vector_index_hnsw_rac_poll_interval_short 1 Duplicate HNSW in-memory on RAC short Poll timeout
_vector_index_hnsw_rac_retry_count 10 Duplicate HNSW in-memory on RAC retry count
_vector_index_hnsw_range_predicated_sql_max_bind 500 vector distributed hnsw index range predicated sql rpi max binds
_vector_index_hnsw_refresh_rac_poll_retry_count vector index neighbor graph refresh rac poll retry count
_vector_index_hnsw_refresh_recovery_mode 1 vector index neighbor graph refresh recovery mode
_vector_index_hnsw_repop_retry_count 3 vector index neighbor graph repopulate create table retry count
_vector_index_hnsw_repopulate_threshold_count 100000 vector index neighbor graph repopulate threshold count
_vector_index_hnsw_scalar_quantization_enabled TRUE HNSW vector index scalar quantization enable
_vector_index_hnsw_snapshot_rac_enable TRUE vector index neighbor graph snapshot rac enable
_vector_index_hnsw_snapshot_threshold_count 10000 vector index neighbor graph snapshot threshold count
_vector_index_hnsw_stats_refresh_threshold 100 vector index neighbor graph stats refresh snapshot threshold
_vector_index_hnsw_test_flags 0 vector hnsw index test
_vector_index_internal_table_drop_retry_interval 100 vector hnsw index internal table drop retry interval
_vector_index_ivf_alert_threshold 10000 Threshold on the number of non-null vectors for creating vector indexe
_vector_index_ivf_batched_journal_apply FALSE Enable batch inserts from the IVF (re)build journal
_vector_index_ivf_centroid_partition_target_size 200 The target partition size for centroid partition table
_vector_index_ivf_centroids_in_large_pool TRUE Populate inmemory centroids in large pool for the IVF vector index
_vector_index_ivf_covering_columns TRUE Enable covering columns for IVF index to be used in queries
_vector_index_ivf_covering_columns_partitioned_tab TRUE IVF index covering columns from partitioned table enabled
le
_vector_index_ivf_deterministic_centroids FALSE Enable deterministic centroids creation for vector IVF index
_vector_index_ivf_disk_format 1 On-disk compress format for vector index
_vector_index_ivf_enable_local_index TRUE enable/disable vector index local index
_vector_index_ivf_flashcache_format 1 Flashcache compress format for vector index
_vector_index_ivf_im_centroids_in_dmls TRUE Use inmemory centroids in dmls that maintain IVF vector index
_vector_index_ivf_im_centroids_in_queries TRUE Use inmemory centroids in queries that use IVF vector index
_vector_index_ivf_init_model_arg 0 The argument for initializing the model of a vector index partition
_vector_index_ivf_init_model_method 1 Method to initialize the model for a newly added vector index partitio
_vector_index_ivf_initrans 0 The setting of INITRANS for creating centroid partition table
_vector_index_ivf_journal_replay_iteration 3 vector ivf index journal replay iteration
_vector_index_ivf_local_index_rewrite_level 3 vector index local index rewrite level
_vector_index_ivf_local_min_rows_scan 10240 the minimal number of rows to be scanned in local IVF queries
_vector_index_ivf_partition_algorithm 1 Partitioning method for creating centroid partition table
_vector_index_ivf_partition_number 0 The number of partitions for creating centroid partition table
_vector_index_ivf_partition_size AUTO The preferred partition size for the IVF centroid partition table
_vector_index_ivf_pctfree 0 Physcial attribute PCTFREE for creating vector index
_vector_index_ivf_populate_im_centroids TRUE Populate inmemory centroids for the IVF vector index
_vector_index_ivf_sample_size 0 vector ivf index sample size
_vector_index_ivf_test_flags 0 IVF vector index test
_vector_index_journaling TRUE enable/disable vector index journaling
_vector_index_minact_max_wait 10 vector index minact max wait time sec
_vector_index_neighbor_graph_refresh AUTO vector index neighbor graph refresh mode
_vector_index_online_build_enable TRUE vector index online build enable
_vector_index_online_catchup_iterations 5 vector index online catchup iteration count
_vector_index_online_catchup_timeout 0 vector index online catchup timeout percentage
_vector_index_online_dml_threshold_count 1000 vector index online build dml drain threshold count
_vector_index_online_local_rebuild_enable TRUE local vector index online rebuild enable
_vector_index_online_rebuild_enable TRUE vector index online rebuild enable
_vector_index_parallel_degree_limit 0 Parallel degree limit for creating a vector index
_vector_index_parallel_dml DISABLED PDML configuration for vector indexes
_vector_index_partition_staleness_threshold 2 vector index partition staleness threshold
_vector_index_quiesce_readers_timeout 300 vector index refcount wait timeout
_vector_index_scan_extra_monitor_hint vector index scan extra monitor hint
_vector_index_scan_use_monitor_hint FALSE enable/disable vector index scan monitor hint
_vector_index_space_grow_percent 3 Percentage of space to be grown at a time for Private Journal using ba
_vector_index_space_grow_threshold 80 Percentage of space utilization threshold to reach before calling the
_vector_index_stats_use_enabled FALSE Enable/Disable use of vector index stats
_vector_index_test_flags 0 vector index journaling test flags
_vector_index_time_staleness_factor 90 vector index time staleness factor (percentage)
_vector_index_use_mm_for_stats TRUE Enable/Disable use of MM optimization for vector index stats
_vector_journal_fxt_tab_size 100 vector journal fixed table size
_vector_memory_64k_percent 10 percentage of vector memory area for 64k pools
_vector_operations_control 0 control different uses/algorithms related to vector transform
_vector_private_journal_maxexts 1000 Max number of extents from 1MB pool per vector PJ
_vector_query_capture_area_size 100 Memory budget allowed for vector query capture feature
_vector_query_capture_interval 1 Sampling interval for query vector capture in seconds
_vector_query_capture_retention_days 7 Query vectors will be stored till retention period
_vector_serialize_temp_threshold 1000 threshold for serializing vector transform temp table writes
_vendor_lib_loc Vendor library search root directory
_verify_db_blocks_after_encrypt FALSE if TRUE, decrypt each block after encryption to verify encrypt
_verify_encrypted_tablespace_keys TRUE if TRUE, verify encryption key signature for data files
_verify_fg_log_checksum FALSE LGWR verifies redo checksums generated by foreground processes
_verify_flashback_redo TRUE Verify that the redo logs needed for flashback are available
_verify_undo_quota FALSE TRUE - verify consistency of undo quota statistics
_very_large_object_threshold 500 upper threshold level of object size for direct reads
_virtual_column_access_control TRUE require VPD/RAS protection for virtual columns derived from protected
_virtual_column_overload_allowed TRUE overload virtual columns expression
_vkrm_schedule_interval 10 VKRM scheduling interval
_vktm_assert_thresh 30 soft assert threshold VKTM timer drift
_wait_breakup_threshold_csecs 600 Wait breakup threshold (in centiseconds)
_wait_breakup_time_csecs 300 Wait breakup time (in centiseconds)
_wait_for_busy_session 10 Wait time before killing active sessions during switchover
_wait_for_sync TRUE wait for sync on commit MUST BE ALWAYS TRUE
_wait_outlier_detection_enable OFF Enable wait outlier detection module?
_wait_outlier_dump_flags 0 Wait Outlier Dump Flags
_wait_outlier_event_names Wait events to watch for outliers
_wait_outlier_lambda_x1000 1500 Lambda (in thousands) to compute outliers
_wait_outlier_min_waits 10 Minimum waits required to enable wait outliers detection
_wait_outlier_num_outliers 600 Max number of outliers tracked
_wait_samples_max_sections 40 Wait Samples maximum sections
_wait_samples_max_time_secs 120 Wait Samples maximum time in seconds
_wait_stats_cpus_per_set 16 Wait event stats: number of cpus per set
_wait_tracker_interval_secs 10 Wait Tracker number of seconds per interval
_wait_tracker_num_intervals 0 Wait Tracker number of intervals
_wait_yield_hp_mode yield Wait Yield - High Priority Mode
_wait_yield_mode yield Wait Yield - Mode
_wait_yield_sleep_freq 100 Wait Yield - Sleep Frequency
_wait_yield_sleep_time_msecs 1 Wait Yield - Sleep Time (in milliseconds)
_wait_yield_yield_freq 20 Wait Yield - Yield Frequency
_walk_insert_threshold 0 maximum number of unusable blocks to walk across freelist
_watchpoint_on FALSE is the watchpointing feature turned on?
_wcr_control 0 Oracle internal test WCR parameter used ONLY for testing!
_wcr_grv_cache_size 65535 Oracle internal: Set the replay cache size for WRR$_REPLAY_DATA.
_wcr_seq_cache_size 65535 Oracle internal: Set the replay cache size for WRR$_REPLAY_SEQ_DATA.
_wcr_test_action 0 Oracle internal test WCR parameter used for test actions
_widetab_comp_enabled TRUE wide table compression enabled
_windowfunc_optimization_settings 0 settings for window function optimizations
_with_subquery OPTIMIZER WITH subquery transformation
_worker_threads 0 Number of worker threads
_workload_attributes session workload attributes
_workspace_memory_threshold 10 Percentage of PGA consumption before workspace migration to disk
_write_clones 3 write clones flag
_write_renamed_datafile_name FALSE print renamed datafile names to alert log
_xa_internal_retries 600 number of internal retries for xa transactions
_xa_parameters Exascale parameters
_xds_max_child_cursors 100 Maximum number of XDS user-specific child cursors
_xengem_devname DEFAULT override default VM GEM device name used by skgvm
_xengem_diagmode OFF set to OFF to disable VM GEM support and functionalities
_xengem_enabled TRUE Enable OVM GEM support
_xpl_peeked_binds_log_size 8192 maximum bytes for logging peeked bind values for V$SQL_PLAN (0 = OFF)
_xpl_trace 0 Explain Plan tracing parameter
_xs_cleanup_task TRUE Triton Session Cleanup
_xs_dispatcher_only FALSE XS dispatcher only mode
_xs_logon_grant FALSE Create session privilege is required for RAS direct logon user to logi
_xs_max_retries_lib_lock 30 Maximum number of retries to get lib lock
_xs_sidp_allow_sha1 TRUE XS SIDP allow use of SHA1
_xsolapi_auto_materialization_bound 20 OLAP API lower bound for auto materialization.
_xsolapi_auto_materialization_type PRED_AND_RC OLAP API behavior for auto materialization
_xsolapi_build_trace FALSE OLAP API output build info to trace file
_xsolapi_debug_output SUPPRESS OLAP API debug output disposition
_xsolapi_densify_cubes TABULAR OLAP API cube densification
_xsolapi_dimension_group_creation OVERFETCH OLAP API symmetric overfetch
_xsolapi_dml_trace OLAP API output dml commands and expressions to trace file
_xsolapi_fetch_type PARTIAL OLAP API fetch type
_xsolapi_fix_vptrs TRUE OLAP API Enable vptr fixing logic in shared server mode
_xsolapi_generate_with_clause FALSE OLAP API generates WITH clause?
_xsolapi_hierarchy_value_type unique OLAP API hierarchy value type
_xsolapi_load_at_process_start NEVER When to load OLAP API library at server process start
_xsolapi_materialization_rowcache_min_rows_for_use 1 OLAP API min number of rows required to use rowcache in query material
_xsolapi_materialize_sources TRUE OLAP API Enable source materialization
_xsolapi_metadata_reader_mode DEFAULT OLAP API metadata reader mode
_xsolapi_odbo_mode FALSE OLAP API uses ODBO mode?
_xsolapi_opt_aw_position TRUE OLAP API enables AW position and count optimization?
_xsolapi_optimize_suppression TRUE OLAP API optimizes suppressions?
_xsolapi_precompute_subquery TRUE OLAP API precomputes subqueries?
_xsolapi_remove_columns_for_materialization TRUE OLAP API removes columns for materialization?
_xsolapi_set_nls TRUE OLAP API sets NLS?
_xsolapi_share_executors TRUE OLAP API share executors?
_xsolapi_source_trace FALSE OLAP API output Source definitions to trace file
_xsolapi_sql_all_multi_join_non_base_hints OLAP API multi-join non-base hints
_xsolapi_sql_all_non_base_hints OLAP API non-base hints
_xsolapi_sql_auto_dimension_hints FALSE OLAP API enable automatic dimension hints
_xsolapi_sql_auto_measure_hints TRUE OLAP API enable automatic measure hints
_xsolapi_sql_dimension_hints OLAP API dimension hints
_xsolapi_sql_enable_aw_join TRUE OLAP API enables AW join?
_xsolapi_sql_enable_aw_qdr_merge TRUE OLAP API enables AW QDR merge?
_xsolapi_sql_hints OLAP API generic hints
_xsolapi_sql_measure_hints OLAP API measure hints
_xsolapi_sql_minus_threshold 1000 OLAP API SQL MINUS threshold
_xsolapi_sql_optimize TRUE OLAP API enable optimization
_xsolapi_sql_prepare_stmt_cache_size 16 OLAP API prepare statement cache size
_xsolapi_sql_remove_columns TRUE OLAP API enable remove unused columns optimizations
_xsolapi_sql_result_set_cache_size 32 OLAP API result set cache size
_xsolapi_sql_symmetric_predicate TRUE OLAP API enable symmetric predicate for dimension groups
_xsolapi_sql_top_dimension_hints OLAP API top dimension hints
_xsolapi_sql_top_measure_hints OLAP API top measure hints
_xsolapi_sql_use_bind_variables TRUE OLAP API enable bind variables optimization
_xsolapi_stringify_order_levels FALSE OLAP API stringifies order levels?
_xsolapi_support_mtm FALSE OLAP API MTM mapping classes supported?
_xsolapi_suppression_aw_mask_threshold 1000 OLAP API suppression AW mask threshold
_xsolapi_suppression_chunk_size 4000 OLAP API suppression chunk size
_xsolapi_use_models TRUE OLAP API uses models?
_xsolapi_use_olap_dml TRUE OLAP API uses OLAP DML?
_xsolapi_use_olap_dml_for_rank TRUE OLAP API uses OLAP DML for rank?
_xt_coverage none external tables code coverage parameter
_xt_def_compression_ratio 4 Default compression ratio for external table data files
_xt_enable_columnar_fetch TRUE Enable external table columnar fetch
_xt_http_wscl FALSE Use KGWSCL for HTTP requests
_xt_hybrid_addl_hidden_column FALSE enable additional hidden columns for external/hybrid table
_xt_legacy_debug_flags 0 Debug flags for ORACLE_LOADER and ORACLE_DATAPUMP
_xt_load_data_share FALSE Use External Table to read during cache load
_xt_pred_pushdown FALSE enable external table predicate pushdown
_xt_preproc_timeout 100 external table preprocessor timeout
_xt_sampling_scan_granules ON Granule Sampling for Block Sampling of External Tables
_xt_sampling_scan_granules_min_granules 1 Minimum number of granules to scan for granule sampling
_xt_table_hidden_column FALSE enable hidden columns for external table
_xt_trace none external tables trace parameter
_xtbigdata_max_buffersize 10240 maximum size of IO Buffers for exadoop external tables (in KB)
_xtbuffer_size 0 buffer size in KB needed for populate/query operation
_xtts_allow_pre10 FALSE allow cross platform for pre10 compatible tablespace
_xtts_set_platform_info FALSE set cross platform info during file header read
_zonemap_auto_candidate_table_min_size 5000 Minimum size for a table to be candidate for an automatic zonemap
_zonemap_auto_clustering_ratio 50 Data clustering ratio in percent for automatic zonemap columns
_zonemap_control 0 control different uses/algorithms related to zonemaps
_zonemap_refresh_within_load TRUE Control the refresh of basic zonemaps during/after data load
_zonemap_staleness_tracking 1 control the staleness tracking of zonemaps via trigger
_zonemap_usage_tracking TRUE Control the capture of zonemap usage statistics
_zonemap_use_enabled TRUE enable the use of zonemaps for IO pruning
adg_account_info_tracking LOCAL ADG user account info tracked in standby(LOCAL) or in Primary(GLOBAL)
adg_redirect_dml FALSE Enable DML Redirection from ADG
alert_log_max_size 1048576000 Alert-log maximum total size
allow_global_dblinks FALSE LDAP lookup for DBLINKS
allow_group_access_to_sga FALSE Allow read access for SGA to users of Oracle owner group
allow_legacy_reco_protocol TRUE Should the database allow the legacy RECO protocol
allow_rowid_column_type FALSE Allow creation of rowid column
allow_weak_crypto TRUE Allow weak crypto usage in DBMS_CRYPTO
approx_for_aggregation FALSE Replace exact aggregation with approximate aggregation
approx_for_count_distinct FALSE Replace count distinct with approx_count_distinct
approx_for_percentile NONE Replace percentile_* with approx_percentile
aq_tm_processes 1 number of AQ Time Managers to start
archive_lag_target 0 Maximum number of seconds of redos the standby could lose
asm_diskgroups disk groups to mount automatically
asm_diskstring disk set locations for discovery
asm_io_processes 20 number of I/O processes per domain in the ASM IOSERVER instance
asm_power_limit 1 number of parallel relocations for disk rebalancing
asm_preferred_read_failure_groups preferred read failure groups
asm_unified_audit_destination SYSTEMLOG Configuring ASM Unified Audit Destination
asm_unified_audit_level BASIC Configuring ASM Unified Audit Level
audit_file_dest /u01/app/oracle/prod Directory in which auditing files are to reside
uct/23.0.0/dbhome_1/
rdbms/audit
audit_sys_operations FALSE enable sys auditing
audit_syslog_level Syslog facility and level
audit_trail NONE enable system auditing
auto_start_pdb_services FALSE Automatically start all PDB services on PDB Open
autotask_max_active_pdbs 2 Setting for Autotask Maximum Maintenance PDBs
awr_pdb_autoflush_enabled TRUE Enable/Disable AWR automatic PDB flushing
awr_pdb_max_parallel_slaves 10 maximum concurrent AWR PDB MMON slaves per instance
awr_snapshot_time_offset 0 Setting for AWR Snapshot Time Offset
background_core_dump partial Core Size for Background Processes
background_dump_dest /u01/app/oracle/prod Detached process dump directory
uct/23.0.0/dbhome_1/
rdbms/log
backup_tape_io_slaves FALSE BACKUP Tape I/O slaves
bitmap_merge_area_size 1048576 maximum memory allow for BITMAP MERGE
blank_trimming FALSE blank trimming semantics parameter
blockchain_table_max_no_drop maximum idle retention minutes for blockchain tables
blockchain_table_retention_threshold 16 maximum retention without TABLE RETENTION privilege
buffer_pool_keep Number of database blocks/latches in keep buffer pool
buffer_pool_recycle Number of database blocks/latches in recycle buffer pool
calendar_fiscal_year_start Start of fiscal year
cdb_cluster FALSE if TRUE startup in CDB Cluster mode
cdb_cluster_name CDB Cluster name
cell_offload_compaction ADAPTIVE Cell packet compaction strategy
cell_offload_decryption TRUE enable SQL processing offload of encrypted data to cells
cell_offload_parameters Additional cell offload parameters
cell_offload_plan_display AUTO Cell offload explain plan display
cell_offload_processing TRUE enable SQL processing offload to cells
cell_offloadgroup_name Set the offload group name
circuits max number of circuits
client_prefetch_rows 0 Client prefetch rows value
client_result_cache_lag 3000 client result cache maximum lag in milliseconds
client_result_cache_size 0 client result cache max size in bytes
client_statistics_level TYPICAL Client Statistics Level
clonedb FALSE clone database
clonedb_dir CloneDB Directory
cloud_table_commit_threshold 0 export threshold (row count) for buffered cloud table
cluster_database FALSE if TRUE startup in cluster database mode
cluster_interconnects interconnects for RAC use
commit_logging transaction commit log write behaviour
commit_point_strength 1 Bias this node has toward not preparing in a two-phase commit
commit_wait transaction commit log wait behaviour
commit_write transaction commit log write behaviour
common_user_prefix Enforce restriction on a prefix of a Common User/Role/Profile name
compatible 23.6.0 Database will be completely compatible with this software version
connection_brokers ((TYPE=DEDICATED)(BR connection brokers specification
OKERS=2)(CONNECTIONS
=2000)), ((TYPE=EMON
)(BROKERS=1))
container_data ALL which containers should data be returned from?
containers_parallel_degree 65535 Parallel degree for a CONTAINERS() query
control_file_record_keep_time 7 control file record keep time in days
control_files /u01/app/oracle/orad control file names list
ata/CDB26AI/controlf
ile/o1_mf_nr8gjx0r_.
ctl, /u01/app/oracle
/fast_recovery_area/
CDB26AI/controlfile/
o1_mf_nr8gjx3t_.ctl
control_management_pack_access DIAGNOSTIC+TUNING declares which manageability packs are enabled
core_dump_dest /u01/app/oracle/diag Core dump directory
/rdbms/cdb26ai/cdb26
ai/cdump
cpu_count 4 maximum number of CPUs
cpu_min_count 4 minimum number of CPUs required
create_bitmap_area_size 8388608 size of create bitmap buffer for bitmap index
create_stored_outlines create stored outlines for DML statements
cursor_bind_capture_destination memory+disk Allowed destination for captured bind variables
cursor_invalidation IMMEDIATE default for DDL cursor invalidation semantics
cursor_sharing EXACT cursor sharing mode
cursor_space_for_time FALSE use more memory in order to get faster execution
data_guard_max_io_time 240 maximum I/O time before process considered hung
data_guard_max_longio_time 240 maximum long I/O time before process considered hung
data_guard_sync_latency 0 Data Guard SYNC latency
data_transfer_cache_size 0 Size of data transfer cache
db_16k_cache_size 0 Size of cache for 16K buffers
db_2k_cache_size 0 Size of cache for 2K buffers
db_32k_cache_size 0 Size of cache for 32K buffers
db_4k_cache_size 0 Size of cache for 4K buffers
db_8k_cache_size 0 Size of cache for 8K buffers
db_big_table_cache_percent_target 0 Big table cache target size in percentage
db_block_buffers 0 Number of database blocks cached in memory
db_block_checking FALSE header checking and data and index block checking
db_block_checksum TYPICAL store checksum in db blocks and check during reads
db_block_size 8192 Size of database block in bytes
db_cache_advice ON Buffer cache sizing advisory
db_cache_size 0 Size of DEFAULT buffer pool for standard block size buffers
db_create_file_dest /u01/app/oracle/orad default database location
ata
db_create_online_log_dest_1 online log/controlfile destination #1
db_create_online_log_dest_2 online log/controlfile destination #2
db_create_online_log_dest_3 online log/controlfile destination #3
db_create_online_log_dest_4 online log/controlfile destination #4
db_create_online_log_dest_5 online log/controlfile destination #5
db_domain example.com directory part of global database name stored with CREATE DATABASE
db_file_multiblock_read_count 128 db block to be read each IO
db_file_name_convert datafile name convert patterns and strings for standby/clone db
db_files 200 max allowable # db files
db_flash_cache_file flash cache file for default block size
db_flash_cache_size 0 flash cache size for db_flash_cache_file
db_flashback_log_dest Separate creation directory for flashback database logs
db_flashback_log_dest_size 0 Size limit of separate creation directory for flashback da
db_flashback_retention_target 1440 Maximum Flashback Database log retention time in minutes.
db_index_compression_inheritance NONE options for table or tablespace level compression inheritance
db_keep_cache_size 0 Size of KEEP buffer pool for standard block size buffers
db_lost_write_protect AUTO enable lost write detection
db_name cdb26ai database name specified in CREATE DATABASE
db_performance_profile Database performance category
db_recovery_auto_rekey ON enable automatic tablespace rekey recovery
db_recovery_file_dest /u01/app/oracle/fast default database recovery file location
_recovery_area
db_recovery_file_dest_size 15521021952 database recovery files size limit
db_recycle_cache_size 0 Size of RECYCLE buffer pool for standard block size buffers
db_securefile PREFERRED permit securefile storage during lob creation
db_ultra_safe OFF Sets defaults for other parameters that control protection levels
db_unique_name cdb26ai Database Unique Name
db_unrecoverable_scn_tracking TRUE Track nologging SCN in controlfile
db_writer_processes 1 number of background database writer processes to start
dbnest_enable NONE database Nest enable
dbnest_pdb_fs_conf PDB Filesystem configuration
dbwr_io_slaves 0 DBWR I/O slaves
ddl_lock_timeout 0 timeout to restrict the time that ddls wait for dml lock
debug_log_max_size 1048576000 Debug-log maximum total size
default_credential default credential session parameter
default_sharing metadata Default sharing clause
deferred_segment_creation TRUE defer segment creation to first insert
dg_broker_config_file1 /u01/app/oracle/prod data guard broker configuration file #1
uct/23.0.0/dbhome_1/
dbs/dr1cdb26ai.dat
dg_broker_config_file2 /u01/app/oracle/prod data guard broker configuration file #2
uct/23.0.0/dbhome_1/
dbs/dr2cdb26ai.dat
dg_broker_start FALSE start Data Guard broker (DMON process)
diagnostic_dest /u01/app/oracle diagnostic base directory
diagnostics_control IGNORE controls response when 'enabling diagnostics' privilege is absent
directory_prefixes_allowed Allowed prefixes for directory paths created inside the PDB
disable_pdb_feature 0 Disable features
disk_asynch_io TRUE Use asynch I/O for random access devices
dispatchers (PROTOCOL=TCP) (SERV specifications of dispatchers
ICE=cdb26aiXDB)
distributed_lock_timeout 60 number of seconds a distributed transaction waits for a lock
dml_locks 2216 dml locks - one for each table modified in a transaction
dnfs_batch_size 4096 Max number of dNFS asynch I/O requests queued per session
drcp_connection_limit 0 DRCP connection limit
drcp_dedicated_opt NO Turn on/off dedicated optimization for DRCP
dst_upgrade_insert_conv TRUE Enables/Disables internal conversions during DST upgrade
enable_automatic_maintenance_pdb TRUE Enable/Disable Automated Maintenance for Non-Root PDB
enable_ddl_logging FALSE enable ddl logging
enable_dnfs_dispatcher FALSE Enable DNFS Dispatcher
enable_goldengate_replication FALSE goldengate replication enabled
enable_imc_with_mira FALSE enable IMC with multi instance redo apply
enable_per_pdb_drcp FALSE Turn on/off per PDB DRCP
enable_pluggable_database TRUE Enable Pluggable Database
enabled_PDBs_on_standby * List of Enabled PDB patterns
encrypt_new_tablespaces CLOUD_ONLY whether to encrypt newly created tablespaces
error_message_details ON print additional explanatory error details
event debug event control - default null string
external_keystore_credential_location external keystore credential location
fal_client FAL client
fal_server FAL server list
fast_start_io_target 0 Upper bound on recovery reads
fast_start_mttr_target 0 MTTR target in seconds
fast_start_parallel_rollback LOW max number of parallel recovery slaves that may be used
file_mapping FALSE enable file mapping
fileio_network_adapters Network Adapters for File I/O
filesystemio_options none IO operations on filesystem files
fixed_date fixed SYSDATE value
forward_listener forward listener
gcs_server_processes 0 number of background gcs server processes to start
global_names FALSE enforce that database links have same name as remote database
global_txn_processes 1 number of background global transaction processes to start
group_by_position_enabled FALSE enable/disable group by position
hash_area_size 131072 size of in-memory hash work area
heartbeat_batch_size 5 Number of heartbeats to be sent in a batch
heat_map OFF ILM Heatmap Tracking
hi_shared_memory_address 0 SGA starting address (high order 32-bits on 64-bit platforms)
hs_autoregister TRUE enable automatic server DD updates in HS agent self-registration
http_proxy http_proxy
hybrid_read_only FALSE Hybrid read only mode allows CDB common user to patch the PDB
identity_provider_config Identity Provider Configuration
identity_provider_type NONE Identity Provider Type
ifile include file in init.ora
ignore_session_set_param_errors Ignore errors during alter session param set
inmemory_adg_enabled TRUE Enable IMC support on ADG
inmemory_automatic_level OFF Enable Automatic In-Memory management
inmemory_clause_default Default in-memory clause for new tables
inmemory_deep_vectorization TRUE In-Memory Deep Vectorization Enabled
inmemory_expressions_usage ENABLE Controls which In-Memory Expressions are populated in-memory
inmemory_force DEFAULT Force tables to be in-memory or not
inmemory_graph_algorithm_execution DEFAULT Controls the fall-back action of graph algorithm execution if in-memor
inmemory_max_populate_servers 2 maximum inmemory populate servers
inmemory_optimized_arithmetic DISABLE Controls whether or not DSBs are stored in-memory
inmemory_optimized_date DISABLE Enables feature to accelerate date queries
inmemory_prefer_xmem_memcompress Prefer to store tables with given memcompress levels in xmem
inmemory_prefer_xmem_priority Prefer to store tables with given priority levels in xmem
inmemory_query ENABLE Specifies whether in-memory queries are allowed
inmemory_size 0 size in bytes of in-memory area
inmemory_trickle_repopulate_servers_percent 1 inmemory trickle repopulate servers percent
inmemory_virtual_columns MANUAL Controls which user-defined virtual columns are stored in-memory
inmemory_xmem_size 0 size in bytes of in-memory xmem area
instance_abort_delay_time 0 time to delay an internal initiated abort (in seconds)
instance_groups list of instance group names
instance_mode READ-WRITE indicates whether the instance read-only or read-write or read-mostly
instance_name cdb26ai instance name supported by the instance
instance_number 0 instance number
instance_type RDBMS type of instance to be executed
instant_restore FALSE instant repopulation of datafiles
iorm_limit_policy RM_PLAN Policy used to compute Exadata IORM limit
ipddb_enable FALSE Enable IPD/DB data collection
java_jit_enabled TRUE Java VM JIT enabled
java_max_sessionspace_size 0 max allowed size in bytes of a Java sessionspace
java_pool_size 0 size in bytes of java pool
java_restrict none Restrict Java VM Access
java_soft_sessionspace_limit 0 warning limit on size in bytes of a Java sessionspace
job_queue_processes 80 maximum number of job queue slave processes
json_behavior control json behaviors
json_expression_check off enable/disable JSON query statement check
kafka_config_file KSR pub/sub external message bus(KGMPS) CONFIGuration file
large_pool_size 0 size in bytes of large pool
ldap_directory_access NONE RDBMS's LDAP access option
ldap_directory_sysauth no OID usage parameter
license_max_sessions 0 maximum number of non-system user sessions allowed
license_max_users 0 maximum number of named users that can be created in the database
license_sessions_warning 0 warning level for number of non-system user sessions
listener_networks listener registration networks
load_without_compile none Load PL/SQL or Database objects without compilation
lob_signature_enable FALSE enable lob signature
local_listener local listener
lock_name_space lock name space used for generating lock names for standby/clone datab
lock_sga FALSE Lock entire SGA in physical memory
lockdown_errors RAISE Mode to ignore or raise PDB lockdown error
lockfree_reservation ON enable/disable lockfree reservation
log_archive_config log archive config
log_archive_dest archival destination text string
log_archive_dest_1 archival destination #1 text string
log_archive_dest_10 archival destination #10 text string
log_archive_dest_11 archival destination #11 text string
log_archive_dest_12 archival destination #12 text string
log_archive_dest_13 archival destination #13 text string
log_archive_dest_14 archival destination #14 text string
log_archive_dest_15 archival destination #15 text string
log_archive_dest_16 archival destination #16 text string
log_archive_dest_17 archival destination #17 text string
log_archive_dest_18 archival destination #18 text string
log_archive_dest_19 archival destination #19 text string
log_archive_dest_2 archival destination #2 text string
log_archive_dest_20 archival destination #20 text string
log_archive_dest_21 archival destination #21 text string
log_archive_dest_22 archival destination #22 text string
log_archive_dest_23 archival destination #23 text string
log_archive_dest_24 archival destination #24 text string
log_archive_dest_25 archival destination #25 text string
log_archive_dest_26 archival destination #26 text string
log_archive_dest_27 archival destination #27 text string
log_archive_dest_28 archival destination #28 text string
log_archive_dest_29 archival destination #29 text string
log_archive_dest_3 archival destination #3 text string
log_archive_dest_30 archival destination #30 text string
log_archive_dest_31 archival destination #31 text string
log_archive_dest_4 archival destination #4 text string
log_archive_dest_5 archival destination #5 text string
log_archive_dest_6 archival destination #6 text string
log_archive_dest_7 archival destination #7 text string
log_archive_dest_8 archival destination #8 text string
log_archive_dest_9 archival destination #9 text string
log_archive_dest_state_1 enable archival destination #1 state text string
log_archive_dest_state_10 enable archival destination #10 state text string
log_archive_dest_state_11 enable archival destination #11 state text string
log_archive_dest_state_12 enable archival destination #12 state text string
log_archive_dest_state_13 enable archival destination #13 state text string
log_archive_dest_state_14 enable archival destination #14 state text string
log_archive_dest_state_15 enable archival destination #15 state text string
log_archive_dest_state_16 enable archival destination #16 state text string
log_archive_dest_state_17 enable archival destination #17 state text string
log_archive_dest_state_18 enable archival destination #18 state text string
log_archive_dest_state_19 enable archival destination #19 state text string
log_archive_dest_state_2 enable archival destination #2 state text string
log_archive_dest_state_20 enable archival destination #20 state text string
log_archive_dest_state_21 enable archival destination #21 state text string
log_archive_dest_state_22 enable archival destination #22 state text string
log_archive_dest_state_23 enable archival destination #23 state text string
log_archive_dest_state_24 enable archival destination #24 state text string
log_archive_dest_state_25 enable archival destination #25 state text string
log_archive_dest_state_26 enable archival destination #26 state text string
log_archive_dest_state_27 enable archival destination #27 state text string
log_archive_dest_state_28 enable archival destination #28 state text string
log_archive_dest_state_29 enable archival destination #29 state text string
log_archive_dest_state_3 enable archival destination #3 state text string
log_archive_dest_state_30 enable archival destination #30 state text string
log_archive_dest_state_31 enable archival destination #31 state text string
log_archive_dest_state_4 enable archival destination #4 state text string
log_archive_dest_state_5 enable archival destination #5 state text string
log_archive_dest_state_6 enable archival destination #6 state text string
log_archive_dest_state_7 enable archival destination #7 state text string
log_archive_dest_state_8 enable archival destination #8 state text string
log_archive_dest_state_9 enable archival destination #9 state text string
log_archive_duplex_dest duplex archival destination text string
log_archive_format %t_%s_%r.dbf archival destination format
log_archive_max_processes 4 maximum number of active ARCH processes
log_archive_min_succeed_dest 1 minimum number of archive destinations that must succeed
log_archive_trace 0 Establish archive operation tracing level
log_buffer 8486912 redo circular buffer size
log_checkpoint_interval 0 # redo blocks checkpoint threshold
log_checkpoint_timeout 1800 Maximum time interval between checkpoints in seconds
log_checkpoints_to_alert FALSE log checkpoint begin/end to alert file
log_file_name_convert logfile name convert patterns and strings for standby/clone db
long_module_action TRUE Use longer module and action
main_workload_type OLTP Main workload type
mandatory_user_profile Enforce Mandatory Password Profile for multitenant database
max_auth_servers 25 Maximum size of auth pool
max_columns STANDARD maximum number of columns allowed in table or view
max_datapump_jobs_per_pdb AUTO maximum number of concurrent Data Pump Jobs per PDB
max_datapump_parallel_per_job AUTO maximum number of parallel processes per Data Pump Job
max_dispatchers max number of dispatchers
max_dump_file_size 1G Maximum size (in bytes) of dump file
max_idle_blocker_time 0 maximum idle time for a blocking session in minutes
max_idle_time 0 maximum session idle time in minutes
max_iops 0 MAX IO per second
max_mbps 0 MAX MB per second
max_pdbs 254 max number of pdbs allowed in CDB or Application ROOT
max_saga_duration 86400 default value for max saga duration
max_shared_servers max number of shared servers
max_string_size STANDARD controls maximum size of VARCHAR2, NVARCHAR2, and RAW types in SQL
memoptimize_pool_size 0 Size of cache for imoltp buffers
memoptimize_write_area_size 0 changes memoptimize write area size
memoptimize_writes HINT write data to IGA without memoptimize_write hint
memory_max_size 0 Maximum memory size
memory_max_target 0 Max size for Memory Target
memory_size 0 Target memory size
memory_target 0 Target size of Oracle SGA and PGA memory
mfa_duo_api_host MFA Duo API Host
mfa_oma_iam_domain_url MFA Oracle Mobile Authenticator IAM Domain Url
mfa_sender_email_displayname MFA Sender Email Displayname
mfa_sender_email_id MFA Sender Email Id
mfa_smtp_host MFA SMTP Host
mfa_smtp_port 587 MFA SMTP Port
min_auth_servers 1 Minimum size of auth pool
mle_prog_languages all Enable Multilingual Engine
multishard_query_data_consistency strong consistency setting for multishard queries
multishard_query_partial_results not allowed enable partial results for multishard queries
native_blockchain_features Native block chain enable/disable
nls_calendar NLS calendar system name
nls_comp BINARY NLS comparison
nls_currency NLS local currency symbol
nls_date_format NLS Oracle date format
nls_date_language NLS date language name
nls_dual_currency Dual currency symbol
nls_iso_currency NLS ISO currency territory name
nls_language AMERICAN NLS language name
nls_length_semantics BYTE create columns using byte or char semantics by default
nls_nchar_conv_excp FALSE NLS raise an exception instead of allowing implicit conversion
nls_numeric_characters NLS numeric characters
nls_sort NLS linguistic definition name
nls_territory AMERICA NLS territory name
nls_time_format time format
nls_time_tz_format time with timezone format
nls_timestamp_format time stamp format
nls_timestamp_tz_format timestamp with timezone format
noncdb_compatible FALSE Non-CDB Compatible
object_cache_max_size_percent 10 percentage of maximum size over optimal of the user session's object c
object_cache_optimal_size 51200000 optimal size of the user session's object cache in bytes
ofs_threads 4 Number of OFS threads
olap_page_pool_size 0 size of the olap page pool in bytes
one_step_plugin_for_pdb_with_tde FALSE Facilitate one-step plugin for PDB with TDE encrypted data
open_cursors 300 max # cursors per session
open_links 4 max # open links per session
open_links_per_instance 4 max # open links per instance
optimizer_adaptive_plans TRUE controls all types of adaptive plans
optimizer_adaptive_reporting_only FALSE use reporting-only mode for adaptive optimizations
optimizer_adaptive_statistics FALSE controls all types of adaptive statistics
optimizer_capture_sql_plan_baselines FALSE automatic capture of SQL plan baselines for repeatable statements
optimizer_capture_sql_quarantine FALSE enable automatic creation/update of sql quarantine configuration
optimizer_cross_shard_resiliency FALSE enables resilient execution of cross shard queries
optimizer_dynamic_sampling 2 optimizer dynamic sampling
optimizer_features_enable 23.1.0 optimizer plan compatibility parameter
optimizer_ignore_hints FALSE enables the embedded hints to be ignored
optimizer_ignore_parallel_hints FALSE enables embedded parallel hints to be ignored
optimizer_index_caching 0 optimizer percent index caching
optimizer_index_cost_adj 100 optimizer index cost adjustment
optimizer_inmemory_aware TRUE optimizer in-memory columnar awareness
optimizer_mode ALL_ROWS optimizer mode
optimizer_real_time_statistics FALSE optimizer real time statistics on conventional DML
optimizer_secure_view_merging optimizer secure view merging and predicate pushdown/movearound
optimizer_session_type NORMAL Controls Auto Index
optimizer_use_invisible_indexes FALSE Usage of invisible indexes (TRUE/FALSE)
optimizer_use_pending_statistics FALSE Control whether to use optimizer pending statistics
optimizer_use_sql_plan_baselines TRUE use of SQL plan baselines for captured sql statements
optimizer_use_sql_quarantine TRUE enable use of sql quarantine
os_authent_prefix ops$ prefix for auto-logon accounts
os_roles FALSE retrieve roles from the operating system
outbound_dblink_protocols ALL Outbound DBLINK Protocols allowed
parallel_adaptive_multi_user FALSE enable adaptive setting of degree for multiple user streams
parallel_degree_limit CPU limit placed on degree of parallelism
parallel_degree_policy MANUAL policy used to compute the degree of parallelism (MANUAL/LIMITED/AUTO/
parallel_execution_message_size 16384 message buffer size for parallel execution
parallel_force_local FALSE force single instance execution
parallel_instance_group instance group to use for all parallel operations
parallel_max_servers 80 maximum parallel query servers per instance
parallel_min_degree 1 controls the minimum DOP computed by Auto DOP
parallel_min_percent 0 minimum percent of threads required for parallel query
parallel_min_servers 8 minimum parallel query servers per instance
parallel_min_time_threshold AUTO threshold above which a plan is a candidate for parallelization (in se
parallel_servers_target 32 instance target in terms of number of parallel servers
parallel_threads_per_cpu 1 number of parallel execution threads per CPU
paranoid_concurrency_mode FALSE Enable strictly durable query data gets
pdb_file_name_convert PDB file name convert patterns and strings for create cdb/pdb
pdb_lockdown pluggable database lockdown profile
pdb_os_credential pluggable database OS credential to bind
pdb_template PDB template
pdc_file_size 4198400 size (in bytes) of the pmem direct commit file
permit_92_wrap_format FALSE allow 9.2 or older wrap format in PL/SQL
pga_aggregate_limit 4978638848 limit of aggregate PGA memory for the instance or PDB
pga_aggregate_target 2489319424 Target size for the aggregate PGA memory consumed by the instance
pkcs11_library_location PKCS#11 library location for Transparent Data Encryption
plscope_settings IDENTIFIERS:NONE plscope_settings controls the compile time collection, cross reference
plsql_ccflags PL/SQL ccflags
plsql_code_type INTERPRETED PL/SQL code-type
plsql_debug FALSE PL/SQL debug
plsql_function_dynamic_stats PREFERENCE Perform Dynamic Sampling for PL/SQL functions
plsql_implicit_conversion_bool FALSE PL/SQL: Implicit conversion for boolean
plsql_optimize_level 2 PL/SQL optimize level
plsql_v2_compatibility FALSE PL/SQL version 2.x compatibility flag
plsql_warnings DISABLE:ALL PL/SQL compiler warnings settings
pmem_filestore Persistent Memory Filestore list
pre_page_sga TRUE pre-page sga for process
priority_txns_high_wait_target 2147483647 Auto abort wait for high pri txns
priority_txns_medium_wait_target 2147483647 Auto abort wait for medium pri txns
priority_txns_mode ROLLBACK Modes for Priority Transactions feature
private_temp_table_prefix ORA$PTT_ Private temporary table prefix
processes 320 user processes
processor_group_name Name of the processor group that this instance should run in.
query_rewrite_enabled TRUE allow rewrite of queries using materialized views if enabled
query_rewrite_integrity enforced perform rewrite using materialized views with desired integrity
rdbms_server_dn RDBMS's Distinguished Name
read_only FALSE Restrict WRITE operations in user session
read_only_open_delayed FALSE if TRUE delay opening of read only files until first access
recovery_parallelism 0 number of server processes to use for parallel recovery
recyclebin on recyclebin processing
redo_transport_user Data Guard transport user when using password file
remote_dependencies_mode TIMESTAMP remote-procedure-call dependencies mode parameter
remote_listener remote listener
remote_login_passwordfile EXCLUSIVE password file usage parameter
remote_os_roles FALSE allow non-secure remote clients to use os roles
remote_recovery_file_dest default remote database recovery file location for refresh/relocate
replication_dependency_tracking TRUE tracking dependency for Replication parallel propagation
resource_limit TRUE master switch for resource limit
resource_manage_goldengate FALSE goldengate resource manager enabled
resource_manager_cpu_allocation 0 Resource Manager CPU allocation
resource_manager_cpu_scope INSTANCE_ONLY scope of CPU resource management
resource_manager_plan resource mgr top plan
result_cache_auto_blocklist ON whether to run the auto blocklisting algorithm
result_cache_execution_threshold 2 minimum executions before a PL/SQL function is cached
result_cache_integrity TRUSTED result cache deterministic PLSQL functions
result_cache_max_result 5 maximum result size as percent of cache size
result_cache_max_size 37748736 maximum amount of memory to be used by the cache
result_cache_max_temp_result 5 maximum temp per result as percent of total temp for result cache
result_cache_max_temp_size 377487360 maximum amount of temp space to be used
result_cache_mode MANUAL result cache operator usage mode
result_cache_remote_expiration 0 maximum life time (min) for any result using a remote object
resumable_timeout 0 set resumable_timeout
rman_restore_file_storage_metadata FALSE restore file's storage metadata
rollback_segments undo segment list
run_addm_for_awr_report NONE types of AWR snapshots for which ADDM can be run inside AWR report
saga_hist_retention 43200 default value for retention of completed sagas
saga_msg_framework classic_queue Queue type used in SAGA infrastructure
scheduler_follow_pdbtz FALSE Make scheduler objects follow PDB TZ
sec_max_failed_login_attempts 3 maximum number of failed login attempts on a connection
sec_protocol_error_further_action (DROP,3) TTC protocol error continue action
sec_protocol_error_trace_action TRACE TTC protocol error action
sec_return_server_release_banner FALSE whether the server retruns the complete version information
serial_reuse disable reuse the frame segments
service_names cdb26ai.example.com service names supported by the instance
session_cached_cursors 50 Number of cursors to cache in a session.
session_exit_on_package_state_error FALSE Request session to exit when PL/SQL package state is discarded
session_max_open_files 10 maximum number of open files allowed per session
sessions 504 user and system sessions
sga_max_size 7465861120 max total SGA size
sga_min_size 0 Minimum, guaranteed size of PDB's SGA
sga_target 0 Target size of SGA
shadow_core_dump partial Core Size for Shadow Processes
shard_apply_max_memory_size 0 SNR Apply max memory size in bytes
shard_enable_raft_follower_read FALSE enable read from follower replications units in a shard
shard_queries_restricted_by_key FALSE add shard key predicates to the query
shard_raft_logfile_size 1073741824 size of raft log file in byte
shared_memory_address 0 SGA starting address (low order 32-bits on 64-bit platforms)
shared_pool_reserved_size 73987522 size in bytes of reserved area of shared pool
shared_pool_size 0 size in bytes of shared pool
shared_server_sessions max number of shared server sessions
shared_servers 1 number of shared servers to start up
shrd_dupl_table_refresh_rate 60 duplicated table refresh rate (in seconds)
skip_unusable_indexes TRUE skip unusable indexes if set to TRUE
smtp_out_server utl_smtp server and port configuration parameter
soda_behavior control soda behaviors
sort_area_retained_size 0 size of in-memory sort work area retained between fetch calls
sort_area_size 65536 size of in-memory sort work area
spatial_vector_acceleration TRUE enable spatial vector acceleration
spfile /u01/app/oracle/prod server parameter file
uct/23.0.0/dbhome_1/
dbs/spfilecdb26ai.or
a
sql92_security TRUE require select privilege for searched update/delete
sql_error_mitigation on enables automatic error mitigation
sql_history_enabled FALSE SQL Query History is enabled when TRUE
sql_trace FALSE enable SQL trace
sql_transpiler OFF Enable SQL transpiler
sqltune_category DEFAULT Category qualifier for applying hintsets
ssl_wallet ssl_wallet
standby_db_preserve_states NONE Preserve state cross standby role transition
standby_file_management MANUAL if auto then files are created/dropped automatically on standby
standby_parse_limit_seconds 300 Standby parse time limit (seconds)
standby_pdb_source_file_dblink database link to standby source files
standby_pdb_source_file_directory standby source file directory location
star_transformation_enabled FALSE enable the use of star transformation
statement_redirect_service statement redirect service
statistics_level TYPICAL statistics level
streams_pool_size 0 size in bytes of the streams pool
sysdate_at_dbtimezone FALSE use DB timezone while computing sysdate and systimestamp value
tablespace_encryption MANUAL_ENABLE Tablepsace encryption in hybrid ADG
tablespace_encryption_default_algorithm AES256 default tablespace encryption block cipher mode
tablespace_encryption_default_cipher_mode XTS default tablespace encryption block cipher mode
tape_asynch_io TRUE Use asynch I/O requests for tape devices
target_pdbs 13 Parameter is a hint to adjust certain attributes of the CDB
tde_configuration Per-PDB configuration for Transparent Data Encryption
tde_key_cache FALSE Enable caching of TDE intermediate key
temp_undo_enabled FALSE is temporary undo enabled
thread 0 Redo thread to mount
threaded_execution FALSE Threaded Execution Mode
time_at_dbtimezone off use DB timezone when computing current time
timed_os_statistics 0 internal os statistic gathering interval in seconds
timed_statistics TRUE maintain internal timing statistics
timezone_version_upgrade_integrity enforced perform DST upgrade leveraging constraints with desired integrity
timezone_version_upgrade_online FALSE enable/disable time zone version upgrade online
trace_enabled TRUE enable in memory tracing
tracefile_content_classification DEFAULT enable output of trace record security label prefix
tracefile_identifier trace file custom identifier
transaction_recovery ENABLED Transaction recovery is enabled when set to ENABLED
transactions 554 max. number of concurrent active transactions
transactions_per_rollback_segment 5 number of active transactions per rollback segment
true_cache FALSE Enable True Cache
true_cache_config True cache config
txn_auto_rollback_high_priority_wait_target 2147483647 Auto abort wait for high pri txns
txn_auto_rollback_medium_priority_wait_target 2147483647 Auto abort wait for medium pri txns
txn_auto_rollback_mode ROLLBACK Modes for Priority Transactions feature
txn_priority HIGH Priority of a transaction in a session
undo_management AUTO instance runs in SMU mode if TRUE, else in RBU mode
undo_retention 900 undo retention in seconds
undo_tablespace UNDOTBS1 use/switch undo tablespace
unified_audit_common_systemlog Syslog facility and level for only common unified audit records
unified_audit_systemlog Syslog facility and level for Unified Audit
unified_audit_trail_exclude_columns NONE Exclude columns from unified_audit_trail
uniform_log_timestamp_format TRUE use uniform timestamp formats vs pre-12.2 formats
use_dedicated_broker NONE Use dedicated connection broker
use_large_pages TRUE Use large pages if available (TRUE/FALSE/ONLY)
user_dump_dest /u01/app/oracle/prod User process dump directory
uct/23.0.0/dbhome_1/
rdbms/log
vector_index_neighbor_graph_reload RESTART specifies whether HNSW reload is enabled
vector_memory_size 1073741824 size in bytes of vector memory area
vector_query_capture ON Specifies whether vector query capture is enabled
wallet_root wallet root instance initialization parameter
workarea_size_policy AUTO policy used to size SQL working areas (MANUAL/AUTO)
xml_client_side_decoding true enable/disable xml client-side decoding
xml_db_events enable are XML DB events enabled
xml_handling_of_invalid_chars raise_error Handle invalid chars during xmlelement
xml_params Parameters to alter xml behavior
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