The following list summarizes the RMAN capabilities that enable high availability:
??? Automated channel failover during backup and restore
??? Automated failover to a previous backup during restore when the current
backup is missing or corrupt
??? Automated new database and temporary file creation during recovery
??? Automated recovery to a previous point in time
??? Block media recovery while the datafile is online
??? Block change tracking for fast incremental backups
??? Merged incremental backups
??? Backup and restore of required files only
Recovering from Failures | 279
??? Retention policy ensuring that relevant backups are available
??? Resumable backup and restore if operations failed
??? Automatic backup of the control file and server parameter file
Since Oracle Database 10g, RMAN is also used to support automated disk-based
backup. Disk-based strategies have an advantage over tape: they enable random
access to any data such that only changes need be backed up or recovered. RMAN
can be set up to run a backup job to disk at a specific time.
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