1. Rolling forward to recover data that has not been recorded in the datafiles, yet has been recorded in the online redo log, including changes to undo blocks. This phase is called cache recovery. 2. Opening the database. Instead of waiting for all transactions to be rolled back before making the database available, Oracle allows the database to be opened as soon as cache recovery is complete. A..
[ORACLE] Mechanics of Instance and Crash Recovery
1. Rolling forward to recover data that has not been recorded in the datafiles, yet has been recorded in the online redo log, including changes to undo blocks. This phase is called cache recovery. 2. Opening the database. Instead of waiting for all transactions to be rolled back before making the database available, Oracle allows the database to be opened as soon as cache recovery is complete. A..
2010.04.19