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$database;
switchover_status
--------------------
sessions active ----------有活动会话。
sql> alter database commit to switchover to physical standby;
alter database commit to switchover to physical standby
*
error at line 1:
ora-01093: alter database close only permitted with no sessions connected
此错误的因为主库中有活动的会话造成的，解决的办法为：
1.杀掉活动会话，，重新执行该命令
2.在该命令后面加上with session shutdown即
alter database commit to switchover to physical standby with session shutdown;
SQL> select switchover_status from v$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.
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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