As an alternative to a direct Oracle backup to tape you can perform a two-phase backup with full support from BRBACKUP or BRARCHIVE. This backup strategy enables you to easily make a disk backup, as well as having several copies of this and previous backups available. For a recovery, BRRECOVER can, in this case, access the disk backup directly. If a restore from tape is required, the files are directly copied to the original directories by BRRESTORE.
You can also perform the second phase of the two-phase backup with external tools - that is, backup programs, operating system tools, and so on. In this case, you have full responsibility for the complete and correct execution of this phase.
You cannot use the BACKINT interface to copy backups from raw devices or compressed disk files to tape. If you use raw devices or compressed disk files, you must save them directly to tape with BRBACKUP or operating system tools.
Two-Phase Database Backup with BRBACKUP
Phase 1
BRBACKUP backup to disk
Phase 2
BRBACKUP backup from disk to tape
Restore phase
BRRESTORE restore from tape directly to the original directories or restore from the disk to the original directories if backup files are still available on disk
To back up to tape (phase 2), start BRBACKUP with the relevant command option. For more information, see -b|-backup.
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Two-Phase Backup of Offline Redo Log Files with BRARCHIVE
Two-phase backup of the offline redo log files using BRARCHIVE runs analog to the BRBACKUP backup. However, you can only make a maximum of two copies to tape. We strongly recommend you to back up the offline redo log files to tape, in addition to a disk backup.
Phase 1
BRARCHIVE backup to disk
Phase 2
BRARCHIVE backup from disk to tape
Restore phase
BRRESTORE restore from tape directly into the original directories or direct applying of offline redo log files in a BRRECOVER recovery from disk (no restore).
To perform the BRARCHIVE backup of the offline redo log files from a disk backup to a tape volume, start BRARCHIVE with the appropriate command option. For more information, see -a|-archive.
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