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  Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 8 - RAC Administration

The ocrconfig Tool Command Syntax and Options

To export the OCR contents to a binary file, for example, use the ocrconfig command with the following syntax where file_name is the file to which you want to export the OCR contents:

ocrconfig -export file_name

The export file is not editable. If OCR clients such as the clusterware are running when you attempt an export, then Oracle will report an error.

Implementing the Oracle Hardware Assisted Resilient Data (HARD) Initiative for the OCR

The purpose of the Oracle Hardware Assisted Resilient Data (HARD) initiative is to prevent data corruptions before they can occur. When HARD is enabled, the OCR writes what are known as HARD-compatible blocks.

While data corruptions are rare, they can have a catastrophic effect on a database, and by extension of the business it supports. By providing Oracle's data validation algorithms to disk manufacturers and having these algorithms at work inside storage devices, Oracle, with disk vendor support, will prevent corrupted data from being written to the database files on permanent storage. This type of end-to-end high-level software to low-level hardware validation is currently a unique capability provided only by Oracle and its storage partners.
 

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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