Procedure to take backup and recover OCR and Voting Disks in RAC

To take backup of OCR Disk:

Execute below command to take backup of OCR Disks as root user:

10g:

# ocrconfig -export <OCR export_filename> -s online

11g:

# ocrconfig -manualbackup

To Take backup Voting Disk:

Pre-11g:

Execute below command as root user:

# dd if=voting_disk_name of=backup_file_name

11g:

For 11.2+, it is no longer required to back up the voting disk. The voting disk data is automatically
backed up in OCR as part of any configuration change. The voting disk files are backed up
automatically by Oracle Clusterware if the contents of the files have changed in the following ways:

Configuration parameters, for example misscount, have been added or modified
After performing voting disk add or delete operations
The voting disk contents are restored from a backup automatically when a new voting disk is added or
replaced.

To List the backup:

# ocrconfig -showbackup

To Recover using backup:

# ocrconfig -import <OCR export_filename>

To check the health of OCR:

# ocrcheck