Pre-11.2: How to Recreate OCR/Voting Disk Accidentally Deleted
(Doc ID 399482.1)
Last updated on OCTOBER 04, 2021
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.1 to 126.96.36.199 [Release 10.2 to 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
The goal of this document is to help customers who have accidentally deleted the OCR, voting disk or the files that are required for the operation of Oracle clusterware.
The note applies to 10gR2 and 11gR1, for 11gR2, refer to <note 1062983.1> and <note 1377349.1>
Depending on the issue, it may or may not be good idea to execute the steps provided.
- If the OCR has been deleted, then check if the OCR mirror is OK and vice versa. It may be prudent to use the OCR mirror to create the OCR. For steps on this check the documentation: Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide
- If the OCR mirror and OCR have been deleted, then it may be faster to restore the OCR using the OCR backups. For steps on this check the documentation: Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide
- Voting Disk
- If there are multiple voting disks and one was accidentally deleted, then check if there are any backups of this voting disk. If there are no backups then we can add one using the crsctl add votedisk command. The complete steps are in the: Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide
- SCLS directories
- These are internal only directories which are created by root.sh, if this directory is accidentally removed then they can only be created by the steps documented below
- Socket files in /tmp/.oracle or /var/tmp/.oracle
- If these files are accidentally deleted, then stop the Oracle Clusterware on that node and restart it again. This will recreate these socket files. If the socket files for cssd is deleted then the Oracle Clusterware stack may not come down in which case the node has to be bounced.
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