Oracle 10.2.0.3环境下的DG主备切换演练,关闭应用且重启主库之后,主库查询切换状态:
Oracle 10.2.0.3环境下的DG主备切换演练,关闭应用且重启主库之后,主库查询切换状态:
SQL> select switchover_status from v$database;
SWITCHOVER_STATUS
--------------------
SESSIONS ACTIVE
执行以下命令尝试切换
SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY;
报错如下:
ORA-01093: ALTER DATABASE CLOSE only permitted with no sessions connected
同时,alert日志报错很多SYSTEM 用户的进程未断开。
解决:
通过查MOS发现,是由于10g版本的DG会racgimon进程监控实例状态,因为可以从v$session.program看到许多racgimon进程.
SQL> alter database commit to switchover to PHYSICAL STANDBY WITH SESSION SHUTDOWN;
切换成功。
本文永久更新链接地址:
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