Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

About Veritas Database FlashSnap
Veritas Database FlashSnap is included with Veritas Database Edition Enterprise
Edition.
Database FlashSnap lets you capture an online image of an actively changing
database at a given instant, known as a snapshot. You can perform backups and
off-host processing tasks on snapshots while providing continuous availability
of your critical data, with minimal interruption to users. Database FlashSnap
commands can be executed from either the command line or the GUI.
Veritas Database FlashSnap offers you a flexible way to efficiently manage multiple
point-in-time copies of your data, and reduce resource contention on your
business-critical servers. Database FlashSnap allows database administrators to
create a consistent copy of a database without root privileges by creating a
snapshot. A snapshot copy of the database is referred to as a database snapshot.
You can use a database snapshot on the same host as the production database or
on a secondary host sharing the same storage. A database snapshot can be used
for off-host processing applications, such as backup, data warehousing, and
decision-support queries. When the snapshot is no longer needed, the database
administrator can import the original snapshot back to the primary host and
resynchronize the snapshot to the original database volumes.
Database FlashSnap also allows you to resynchronize your original database
volumes from the data in the snapshot if the original volumes become corrupted.
This is referred to as reverse resynchronization.
Database FlashSnap can significantly reduce the time it takes to back up your
database, increase the availability of your production database, and still maintain
your production database's performance.
Note: To use Database FlashSnap, you must have Veritas Storage Foundation
Enterprise Edition on all systems on which you intend to use Database FlashSnap.
To use Database FlashSnap, you must first configure the volumes used by the
database.
Note: Veritas Storage Foundation for Oracle RAC does not support reverse
resynchronization and operations through the GUI.
Using Database FlashSnap for backup and off-host processing
About Veritas Database FlashSnap
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