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ORACLE 11gR2 DG(Physical Standby)日常维护01

2015-10-19 13:05  AlfredZhao  阅读(...)  评论(...编辑  收藏

环境:RHEL 6.4 + Oracle 11.2.0.4

一、主备手工切换

二、重命名数据文件

Reference

一、主备手工切换

1.1 主库,切换成备库并启动到mount

1.1.1 查看主库状态 ``` SQL> SELECT OPEN_MODE, DATABASE_ROLE, SWITCHOVER_STATUS, FORCE_LOGGING, DATAGUARD_BROKER, GUARD_STATUS FROM V$DATABASE; ``` 1.1.2 切换到备库 ``` SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY; ``` 1.1.3 启动到mount状态 ``` SQL> STARTUP MOUNT ```

1.2 备库,切换成主库并启动到open

1.2.1 查看备库状态 ``` SQL> SELECT OPEN_MODE, DATABASE_ROLE, SWITCHOVER_STATUS, FORCE_LOGGING, DATAGUARD_BROKER, GUARD_STATUS FROM V$DATABASE; ``` 1.2.2 切换到主库 ``` SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY; ``` 1.2.3 数据库open ``` SQL> ALTER DATABASE OPEN; ```

1.3 新的备库启动日志应用

1.3.1 备库mount状态直接启动日志应用 ``` SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT; ``` 1.3.2 备库切换到open状态,启用Real-time query A physical standby database instance cannot be opened if Redo Apply is active on a mounted instance of that database. Use the following SQL statements to stop Redo Apply, open a standby instance read-only, and restart Redo Apply: ``` SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL; SQL> ALTER DATABASE OPEN; SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT; ```

二、重命名数据文件

2.1 主库,对应的数据文件或者表空间offline

``` SQL> ALTER TABLESPACE DBS_D_JINGYU OFFLINE; ```

2.2 主库,操作系统层面重命名数据文件

``` $ mv /u01/oradata01/JINGYU/datafile/o1_mf_dbs_d_ji_byqy17ph_.dbf /u01/oradata01/JINGYU/datafile/DBS_D_JINGYU01.dbf ```

2.3 主库,重命名数据文件,表空间online

``` SQL> ALTER TABLESPACE DBS_D_JINGYU RENAME DATAFILE '/u01/oradata01/JINGYU/datafile/o1_mf_dbs_d_ji_byqy17ph_.dbf' TO '/u01/oradata01/JINGYU/datafile/DBS_D_JINGYU01.dbf'; SQL> ALTER TABLESPACE DBS_D_JINGYU ONLINE; ```

2.4 备库,停止redo应用

``` SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL; ```

2.5 备库,关闭数据库

``` SQL> SHUTDOWN IMMEDIATE; ```

2.6 备库,操作系统层面重命名数据文件

``` $ mv /u01/oradata01/BOSTON/datafile/o1_mf_dbs_d_ji_22qjsbps_.dbf /u01/oradata01/BOSTON/datafile/DBS_D_JINGYU01.dbf ```

2.7 备库,启动到mount状态

``` SQL> STARTUP MOUNT ```

2.8 备库,重命名数据文件

2.8.1 需要先调整参数STANDBY_FILE_MANAGEMENT为MANUAL 否则重命名数据文件时会报错`ORA-01275: Operation RENAME is not allowed if standby file management is automatic.` ``` SQL> SHOW PARAMETER STANDBY_FILE_MANAGEMENT SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT = MANUAL; ``` 2.8.2 重命名数据文件 ``` SQL> ALTER DATABASE RENAME FILE '/u01/oradata01/BOSTON/datafile/o1_mf_dbs_d_ji_22qjsbps_.dbf' TO '/u01/oradata01/BOSTON/datafile/DBS_D_JINGYU01.dbf'; ``` 2.8.3 参数调整为AUTO ``` SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT = AUTO; ```

2.9 备库,重新启动redo应用

``` SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION; ```

Reference

- Oracle® Data Guard Concepts and Administration 11g Release 2 (11.2)