Instance Recovery
The procedure used to recover from single-instance crash failures as well as failures of Oracle RAC instances is called instance recovery. In the case of Oracle RAC, a surviving instance recovers all the failed instances. Instance recovery aims to restore the data block changes that were in the cache of the failed instance and to close the thread that was left open. Instance recovery uses only online redo log files and current online datafiles (not restored backups).
Instance Recovery in OPS
In Oracle Parallel Server (OPS), instance recovery processes one thread at a time and recovers one instance at a time. It applies all redos (from the thread checkpoint through the end-of-thread) from each thread before starting on the next ...
Get Oracle Database 11g Oracle Real Application Clusters Handbook, 2nd Edition, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
