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SF Oracle RAC provides a Storage Checkpoint facility that is similar to the snapshot file system mechanism; however, a Storage Checkpoint persists after a system reboot. A Storage Checkpoint creates an exact image of a database instantly and provides a consistent image of the database from the point in time the Storage Checkpoint was created. The Storage Checkpoint image is managed and available through the Veritas Storage Foundation command line interface (CLI).
For more information on creating Storage Checkpoints with the CLI:
SeeCreating Storage Checkpoints using dbed_ckptcreate.
A direct application of the Storage Checkpoint facility is Storage Rollback. Because each Storage Checkpoint is a consistent, point-in-time image of a file system, Storage Rollback is the restore facility for these on-disk backups. Storage Rollback rolls back changed blocks contained in a Storage Checkpoint into the primary file system for restoring the database faster.
For more information on Storage Checkpoints and Storage Rollback, see the Veritas File System Administrator's Guide.