Data Recovery Advisor (DRA) in Oracle Database

I had the opportunity to work with the Data Recovery Advisor (DRA) feature in earlier versions of Oracle Database, and its great tool to automate the recovery process, reducing downtime and recovery time

In Oracle 11g, the Data recovery advisor is introduced, and this tool helps to reduce the recovery time by providing best automated repair option for the database. This tool automatically diagnoses data failures, determine best repair options, executes repairs at user request, it helps to reduce mean time to recover (MTTR).

The Data recovery advisor can help to limit damage caused by corruption as it can detect, analyze and repair failures before database process discovers it. In traditional method user manually determines the impact and repair options, in some cases users needs to determine right sequence of repair as well.

The Data recovery advisor commands are LIST FAILURE, ADVISE FAILURE, REPAIR FAILURE and CHANGE FAILURE.

• LIST FAILURE: Lists the failures that have occurred in the database. 

        RMAN> LIST FAILURE;

• ADVISE FAILURE: Provides the best repair options for the listed failures. 

        RMAN> ADVISE FAILURE;

• REPAIR FAILURE: Executes the repair process based on the user's selection.

        RMAN> REPAIR FAILURE;

• CHANGE FAILURE: Allows users to modify the failure status.

    RMAN> CHANGE FAILURE FAILURE #1 RESOLVED;

 
Deprecation of DRA in Oracle 19c

While the Data Recovery Advisor was a valuable tool in earlier Oracle releases, it was deprecated in Oracle 19c. This means that DRA will no longer be available for use in future versions beyond Oracle 19c. Additionally, the associated RMAN commands (LIST FAILURE, ADVISE FAILURE, REPAIR FAILURE, and CHANGE FAILURE) have also been deprecated. As a result, DBAs will no longer have access to these commands in Oracle 19c and beyond, marking the end of an era for this powerful recovery tool.

Thanks & Regards,
https://oracleracexpert.com