Oracle Cluster Registry (OCR)

How to Resolve INS-30510: Insuffient number of ASM disks selected

by Ed Chen
January 29, 2020September 19, 2021

INS-30510 When we choose 2 disks to create a disk group with NORMAL redundancy during Oracle grid infrastructure 19c installation, we got INS-30510: Insuffient number… Read More »

How to Restore OCR and Voting Disk

by Ed Chen
June 30, 2019September 7, 2023

There're 2 procedures of restoring OCR and voting disk in this post. They are: Restore OCR and Voting Disk For 12c Clusterware Restore OCR and… Read More »

How to Restore 10g RAC Database from a Backup Set

by Ed Chen
June 26, 2019May 31, 2023
2 Comments

For 12c RAC database restoration, you may check: How to Restore 12c RAC Database from a Backup Set. Suppose we have recovered 10g CRS and… Read More »

How to Backup OCR and Voting Disk

by Ed Chen
June 16, 2019December 10, 2022

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… Read More »

Where is oratab Location

by Ed Chen
March 30, 2018December 28, 2022

Path to oratab Here is the list to show Oracle oratab location in some operating systems. oratab location in operating systems Operating System oratab Location… Read More »

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