DataGuard在做Switchover切换时遇到ORA-01093等问题总结

DataGuard在做Switchover切换时遇到问题总结

1.主库在进行物理主备库角色转换的时候遇到ORA-01093错误

SQL> select switchover_status from v$database;
SWITCHOVER_STATUS
--------------------
SESSIONS ACTIVE ----------有活动会话。
SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY;
ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY
*
ERROR at line 1:
ORA-01093: ALTER DATABASE CLOSE only permitted with no sessions connected

此错误的因为主库中有活动的会话造成的，解决的办法为：
1.杀掉活动会话，，重新执行该命令
2.在该命令后面加上with session shutdown即
ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY WITH SESSION SHUTDOWN;

2.备库在转换为主库时状态为：NOT ALLOWED--可能需要恢复或者退出恢复模式。

SQL> select switchover_status from v$database;
SWITCHOVER_STATUS
--------------------
NOT ALLOWED
SQL> alter database commit to switchover to primary;
alter database commit to switchover to primary
*
ERROR at line 1:
ORA-16139: media recovery required
或者如下：--RECOVERY NEEDED
SQL> select switchover_status from v$database;
SWITCHOVER_STATUS
--------------------
RECOVERY NEEDED
###############
SQL> alter database recover managed standby database disconnect from session;
Database altered.
SQL> select switchover_status from v$database;
SWITCHOVER_STATUS
--------------------
TO PRIMARY
SQL> alter database commit to switchover to primary;
Database altered.

3.主库切换为备库后，备库不做：alter database recover managed standby database cancel;也可以，此时已经自动断开了，日志中有提示：

Sun Apr 20 20:15:35 2014
Media Recovery Log /u01/app/Oracle/prod/arch/1_62_844894247.dbf
Media Recovery Waiting for thread 1 sequence 63
Sun Apr 20 20:15:46 2014
Redo Shipping Client Connected as PUBLIC
-- Connected User is Valid
RFS[6]: Assigned to RFS process 19968
RFS[6]: Identified database type as 'physical standby'
RFS[6]: Archived Log: '/u01/app/oracle/prod/arch/1_63_844894247.dbf'
Sun Apr 20 20:15:50 2014
Media Recovery Log /u01/app/oracle/prod/arch/1_63_844894247.dbf
Identified End-Of-Redo for thread 1 sequence 63
Sun Apr 20 20:15:50 2014
Media Recovery End-Of-Redo indicator encountered
Sun Apr 20 20:15:50 2014
Media Recovery Applied until change 373573 ---最后应用到的SCN
Sun Apr 20 20:15:50 2014
MRP0: Media Recovery Complete: End-Of-REDO (PROD)
Resetting standby activation ID 257246883 (0xf5546a3)
Sun Apr 20 20:15:51 2014
MRP0: Background Media Recovery process shutdown (PROD)----MEDIA RECOVERY PROCESS已经关闭
Sun Apr 20 20:16:21 2014
alter database recover managed standby database cancel
Sun Apr 20 20:16:21 2014
ORA-16136 signalled during: alter database recover managed standby database cancel...

相关参考:

Oracle Data Guard 重要配置参数

基于同一主机配置 Oracle 11g Data Guard

探索Oracle之11g DataGuard

Oracle Data Guard （RAC DG) 归档删除策略及脚本

Oracle Data Guard 的角色转换

Oracle Data Guard的日志FAL gap问题

Oracle 11g Data Guard Error 16143 Heartbeat failed to connect to standby 处理方法

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