Clusterware version consistency failed

Posted Leave a commentPosted in 11gR2, cluvfy, CRS, HA, OHASD, OLR, Oracle, Upgrade

Recently we rollbacked (qtree snapshots were restored) 2-node RAC back to version after testing successful upgrade.Again it was time for mock upgrade to, before performing it on production.We started the runInstaller for CRS upgrade and after the “Prerequisite Checks” it showed ” clusterware version consistency failed for both the nodes”. The to […]

OHASD doesn't start – 11gR2

Posted 3 CommentsPosted in 11gR2, CRS, HA, OHASD, Oracle, RAC

Few weeks back had an issue where 2nd node of 4-node RAC got evicted and the alert log showed the below error before the instance was evicted – Errors in file /u04/oraout/matrix/diag/rdbms/matrix_adc/matrix2/trace/matrix2_ora_8418.trc (incident=16804): ORA-00603: ORACLE server session terminated by fatal error ORA-27504: IPC error creating OSD context ORA-27300: OS system dependent operation:if_not_found failed with status: […]

Restoring OLR – 11gR2

Posted 2 CommentsPosted in 11gR2, OHASD, OLR

OLR (Oracle Local Registry) stores the information used by OHASD during the startup sequence of the node.The OLR clusterware configuration file is present on all the nodes of the RAC database.It also stores the Oracle Restart’s metadata for Single instance database in 11gR2. [[email protected] bin]$ ./ocrcheck Status of Oracle Cluster Registry is as follows : […]