Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

In Oracle RAC, this command can be run on the CVM master or slave node.
■ dbed_vmclonedb (used on the primary or secondary host)
Mounts and starts a clone database using snapshot volumes. It can also shut
down a clone database and deport its volumes, as well as restart a clone
database that has been shut down. The snapshot image can be brought up on
the same host running the primary database or on a secondary host.
In Oracle RAC, this command can be run on the CVM master or slave node.
All of these commands can be executed by the Oracle database administrator and
do not require superuser (root) privileges.
Note: Database FlashSnap operations can be executed from either the command
line or the GUI.
Database FlashSnap options
Database FlashSnap offers three options for creating database snapshots. The
option you choose is specified in the snapplan.
■ online
With this option, the tablespaces are put into online backup mode before the
snapshot is created. This type of snapshot is also a valid database backup.
Select this option if you are performing a point-in-time recovery from logical
errors.
■ instant
With this option, the database can be up and running, and the tablespaces do
not need to be put into online backup mode before the snapshot is created.
However, all the file systems used by the database (including those containing
the online redo logs and control files) are temporarily frozen and the cache is
flushed before the snapshot is created. By freezing the file systems, the
snapshot will be a consistent point-in-time image of the database from which
a database clone can be created.
An instant snapshot can be used to guard against data corruption or for off-host
decision-support queries. However, it is not a valid database backup and cannot
be used to perform a point-in-time recovery or off-host backup since
tablespaces are not put into online backup mode before the snapshot is created.
The instant option is much faster than the online option.
■ offline
Use this option to clone or back up a database. With the offline option, the
database must be shut down when the snapshot is created, and online redo
logs are required.
Using Database FlashSnap for backup and off-host processing
About Veritas Database FlashSnap
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