ORACLE 11gR2 DG(Physical Standby)日常维护01
2015-10-19 13:05 AlfredZhao 阅读(4634) 评论(0) 编辑 收藏 举报环境:RHEL 6.4 + Oracle 11.2.0.4
一、主备手工切换
- 1.1 主库,切换成备库并启动到mount
- 1.2 备库,切换成主库并启动到open
- 1.3 新的备库启动日志应用
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
- 2.2 主库,操作系统层面重命名数据文件
- 2.3 主库,重命名数据文件,表空间online
- 2.4 备库,停止redo应用
- 2.5 备库,关闭数据库
- 2.6 备库,操作系统层面重命名数据文件
- 2.7 备库,启动到mount状态
- 2.8 备库,重命名数据文件
- 2.9 备库,重新启动redo应用
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)
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