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Oracle 11g R1/R2 Real Application Clusters Essentials by Syed Jaffer Hussain, Ben Prusinski

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OCR and Voting disk backup and recovery strategies

This section mainly focuses on the essential concepts and various approaches available to safeguard the Clusterware critical components OCR and Voting disk file from a single point of failure. We will also illustrate the various methods available to back up and recover the OCR and voting disk files.

Adding a Mirror location for the OCR and Voting disk

Considering the vital information held by the OCR and Voting disk, and the pivotal role played by these two critical cluster components for smooth cluster functionality, Oracle strongly recommends that you keep redundant copies of these components to avoid a single point of failure. If you have not selected the redundant option during the clusterware ...

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