Database Backup and Recovery (MOSC)

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How to recover if redo is lost from OS file system

edited May 13, 2015 10:02AM in Database Backup and Recovery (MOSC) 2 commentsAnswered


Hi,

Today I was working on a recovery scenario.

Case: We have DB cold backup along with controlfile. DB was in no archivelog mode.

DB version: 11.2.0.3

HA  :  RAC one Node environment - 2 node

Glitch: Under mysterious condition, a third thread redo group had been created by someone in FRA as there was no db_recovery_file_dest parameters set

           Without knowledge of , the third thread redologs were physically removed from FRA

Event Sequence: while attempting to convert db to archivelog mode, I had shut down and tried to open db

Consequence:

Errors in file /oracle/XXXX/db/diag/rdbms/xxxx/XXXX_2/trace/XXXX_2_arc2_31348.trc:

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