Oracle - Study UNDO
undo回滚段作用:
事务回滚
实例恢复(利用回滚段来恢复未提交的数据)
构造CR块,读一致性
数据库闪回查询
数据库闪回恢复逻辑错误
Oracle 12c - Study PDB$SEED
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Oracle 12c - Study Resetlogs
Backup and recover is the important toipc in Database area. the resetlogs knowledge is important in Backup&Recover.
The VagrantBox list from Oracle
Unitl now, Oracle have provide the vagrantbox in the following link in Github.
How to remove file while happening “Text file busy”?
How to install Redis3.0 in Linux 7?
Oralce 12c SP2-0618 and ORA-01919
I met the error SP2-0618 and ORA-01919 while I executed the command “set autot on” to check the execute plan of sql.
HR@PDBPROD1> set autot on
SP2-0618: Cannot find the Session Identifier. Check PLUSTRACE role is enabled
SP2-0611: Error enabling STATISTICS report
HR@PDBPROD1>
Oralce 18c New feature - Private Temporary Tables
We use Global Temporary Tables from Oracle 8i and we can use private temporary tables from 18c.
What is Private Temporary Tables? When to use Private Temporary Table ? How to use this?
Vagrant + Oracle Linux 7.4 + Oracle Database 18c + Create DB
How to install Database 18c in Oracle Linux 7.4?
Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production

How to install GUI in Oracle Linux 7?
Oracle 12c - How to create new service name for PDB?
We can use service_names to name or add service for database.
However we can NOT use service_names to name or add service for PDB container. So How to create new service name for PDB?
SYS> show parameter service_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
service_names string PROD.example.com
SYS> -
I met the ORA-00119 error while I modified the hostname and restarted the node.
[oracle@dbvm01]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Jan 5 10:35:12 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected.
SQL> startup nomount
ORA-00119: invalid specification for system parameter LOCAL_LISTENER
ORA-00130: invalid listener address '(ADDRESS=(PROTOCOL=TCP)(HOST=dbvm01)(PORT=1521))'
SQL>
With the messages, maybe the local_listener is wrong?