Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

■ You must be logged in as the Oracle database administrator.
■ You must create and validate a snapplan using
dbed_vmchecksnap before you can create a snapshot image with
dbed_vmsnap.
Prerequisites
■ The dbed_vmsnap command can only be used on the primary
host, or if in an Oracle RAC configuration, on the CVM master or
slave node.
■ Do not share volumes between Oracle database files and other
software.
■ When creating a snapshot volume, create the snapshot on a
separate controller and on separate disks from the primary volume.
■ Make sure your archive log destination is separate from your Oracle
database volumes.
■ Do not place any datafiles, including control files, in the
$ORACLE_HOME/dbsdirectory.
■ Resynchronization speed varies based on the amount of data
changed in both the primary and secondary volumes when the
mirror is broken off.
■ See the dbed_vmsnap(1M) manual page for more information.
Usage notes
To create a snapshot
1
If SNAPSHOT_MODE is set to offline in the snapplan, shut down the database.
Skip this step if in a Veritas Storage Foundation for Oracle RAC environment,
because only the online mode is supported.
2
Create the snapshot image using the dbed_vmsnap command:
$ /opt/VRTS/bin/dbed_vmsnap -S ORACLE_SID -f SNAPPLAN \
-o snapshot [-F]
271Using Database FlashSnap for backup and off-host processing
Creating a snapshot (dbed_vmsnap)