DanBrother的部落格

The following techniques are used to validate the integrity of Oracle Cluster configuration files, namely OCR and voting disks.

1. Check the ocssd.log for voting disk issues. (run as grid user)

Oracle Clusterware includes two important components:
1. Voting disk:  A file that manages information about node membership
2  OCR (Oracle Cluster Registry): A file that manages cluster and Oracle RAC database configuration information.

Oracle Clusterware automatically creates OCR backups every 4 hours.
At any one time, Oracle Clusterware always retains the latest 3 backup copies of the OCR that are 4 hours old, 1 day old, and 1 week old.

Stop CRS:
crsctl stop crs (normal)
crsctl stop crs -f (force)