1. The cluster registry has not been formatted.
2. The cluster registry location is not accessible.
3. The cluster registry location has incorrect permissions.
4. Oracle Clusterware is not running.
1. Run the 'ocrcheck' command to confirm that the OCR is formatted and usable.
2. Run 'ocrcheck -config' command to retrieve the configured locations, and verify that each location is accessible and has the correct permissions via native platform or OS methods. If a location is an ASM disk group, verify that the disk group exists and is mounted.
3. Run 'crsctl check crs' command to verify that Oracle Clusterware is running.
1. The cluster registry has not been formatted.
2. The cluster registry location is not accessible.
3. The cluster registry location has incorrect permissions.
4. Oracle Clusterware is not running.
1. Run the 'ocrcheck' command to confirm that the OCR is formatted and usable.
2. Run 'ocrcheck -config' command to retrieve the configured locations, and verify that each location is accessible and has the correct permissions via native platform or OS methods. If a location is an ASM disk group, verify that the disk group exists and is mounted.
3. Run 'crsctl check crs' command to verify that Oracle Clusterware is running.
1. Oracle Clusterware was started before the patch application had completed.
2. Oracle Clusterware was started from a location other than the Grid Infrastructure home that was most recently patched.
1. Complete applying the patch on this node.
2. Ensure the Oracle Clusterware is started from the Grid Infrastructure home that was most recently patched. Verify the patch level matches using the 'crsctl query crs releasepatch' and the 'crsctl query crs softwarepatch' commands. If the problem persists, contact Oracle Support Services.