Clusterware

How to Restore 12c Clusterware OCR Voting Disk

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For 10g clusterware, you may check: How to Restore 10g Clusterware. Suppose we have lost all disk groups as well as OCR data, voting disk and management database (MGMTDB) in a disaster, we have to rebuild 12c clusterware nearly from the ground up for later 12c RAC database restoration. The only thing that you must […]
Clusterware

How to Backup Clusterware OCR and Voting Disk

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In this post, I will introduce some ways to backup Oracle Cluster Registry (OCR) data and voting disk in case of losing all configuration. Backup OCR Data 1. OCR Dumps Oracle provides an utility ocrconfig to export OCR data to a dump file like this: [root@primary01 ~]# . /home/oracle/.bash_profile [root@primary01 ~]# cd /backup/ [root@primary01 backup]# […]