ORACLE LOCAL REGISTRY(OLR) contains node-specific information required by OHASD . Every node has its own dedicated OLR file.(not shared between the nodes).

As OCRs files are present in ASM diskgroup, While starting the CRS, it wont be able to Access OCR file to find the cluster resource information. Because at this point ASM instance would also be down. So at this point OLR file ( which is present at normal file system) is accessed to start the required resources.


1. The default location of OLR:

2.View the available backups of OLR:

2. Take the backup of OLR manually: ( Need to done from ROOT user)

3. Verify integrity of the OLR

4. Check the current OLR location:

5. View OLR in text format:

6. Restore OLR from backup:

In case OLR is corrupted, Restore it from backup.