How to Manage the Local Cluster Registry

FILE LOCATIONS

The location of the Oracle Local Registry (OLR) can be found, and modified, via the /etc/oracle/ocr.loc file.

The OLR is located by dafault in the $GRID_HOME/cdata/localhost/$hostname.olr directory.

USEFUL COMMANDS

• The -local flag is added for readability however is a defaulted settings for standalone cluster environments.

CHECK THE OLR STATUS

• ocrcheck -local

DISPLAY THE CONTENTS OF THE OLR

• ocrdump -local -stdout

USEFUL COMMANDS

• Unlike Oracle RAC installations, the OLR is only backed up once automatically at the time of install. All future backups must be made manually.
• A fresh backup of the OLR should be taken every time a configuration change is made, e.g. after adding a new resource.

TAKE A MANUAL BACKUP OF THE OLR

• ocrconfig -local -manualbackup

• By default the backups are made in the $GRID_HOME/cdata/$hostname directory, however an alternative location can be speficifed by adding the -backuploc switch.

PERFORM A RESTORE OF THE OLR

• crsctl stop crs
• ocrconfig -local -restore <olr_backup_file_name>
• ocrcheck -local
• crsctl start crs