CRS顯示 正在運行的db instance 是offline狀態
轉自：
CRS shows Running Instance Status as OFFLINE (Doc ID 1673397.1)
適用於：
Oracle Database - Enterprise Edition - Version 11.2.0.2 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.
症狀：
在crsctl stat res -t 輸出裡，數據庫實例的status顯示offline，但是數據庫實例是正在運行的
$/bin/crsctl stat res ora.racdb.db -t -------------------------------------------------------------------------------- NAME TARGET STATE SERVER STATE_DETAILS -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.racdb.db 1 OFFLINE OFFLINE Corrupted Controlfile--->顯示'Corrupted Controlfile' 2 ONLINE ONLINE rachost2 Open 3 ONLINE ONLINE rachost3 Open $ /bin/srvctl status database -d racdb Instance racdb1 is not running on node rachost1 Instance racdb2 is running on node rachost2 Instance racdb3 is running on node rachost3 $ sqlplus / as sysdba ... SQL> select INSTANCE_NAME, STATUS from gv$instance; INSTANCE_NAME STATUS ---------------- ------------ racdb1 OPEN racdb2 OPEN racdb3 OPEN
實例的alert日志可能會顯示如下的信息：
基於此結果，數據庫服務不在 offline的instance 上運行。
原因：
Due to unpublished Bug 13257122 CRSD AGENT REPORT DB CONTROLFILE CORRUPTED BUT IT STILL ONLINE, CRSD agent reports corrupted control file for read error during fixed table query which is not a real corruption and caused by concurrent control file write.
解決方案
Bug 13257122 has been fixed in 11.2.0.4 and 12.1. Apply the patchset 11.2.0.4 should avoid the problem.
To workaround the issue, please try to re-start the instance via srvctl:
$ srvctl start instance -d racdb -i racdb1
