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  Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 8 - RAC Administration

Procedure for Restoring the Oracle Cluster Registry on Windows-Based Systems

  1. Execute the restore by applying an OCR backup file identified in Step 3 with the ocrconfig -restore <file name> command.

  2. Start all the services that were stopped in step 2. Restart all the instances and resume operations in cluster mode.

Importing the Oracle Cluster Registry with OCR Exports

To ensure the OCR files are recoverable, in addition to using the automatically created OCR backup files, you should export the OCR contents before and after making significant configuration changes. You do this by using the ocrconfig -export command. This will enable you to restore the OCR if your configuration changes cause errors. For example, if you have unresolvable configuration problems, or if you are unable to restart your clusterware after making changes, restore your configuration using one of the following platform-specific procedures. You cannot restore your configuration from an automatically created OCR backup file using the -import option. You must instead use the -restore option.

Importing Oracle Cluster Registry Content on UNIX-Based Systems

  1. Shut down all of the nodes in the cluster and restart one of them in single-user mode.

The above text is an excerpt from:

Oracle 10g Grid & Real Application Clusters
Oracle 10g Grid Computing with RAC
ISBN 0-9744355-4-6

by Mike Ault, Madhu Tumma


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