If your control files or archived log files have been lost or corrupted, you can restore them by selecting them on the Source tab of the Restore Manager when you configure a restore.
Important! If you selected the Purge Logs after Backup option during backup, you must select one of the Archived Logs options (except Do Not Restore) on the Advanced Oracle Restore Options tab to ensure that RMAN triggers the restore of the required logs. If you do not select one of the Archived Logs options, the recovery phase will not function properly since the necessary logs may be missing. If you are using Oracle 9i and above, however, RMAN automatically restores the needed archived logs when you select one of the Recovery options.
If your archived redo log files are not damaged, generally you should not include them in a restore. By keeping the archived redo log, you can restore your database to the latest usable version that existed before your system or database failed.
If you select the Until the End of Logs option when you configure a restore, do not include the control files in the restore unless missing or corrupted. If you include the control files in the restore, the agent recovers the database using the restored control files. As a result, all transactions made in the database that occurred after the last transaction recorded in the restored backup files are lost.
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