VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Examples of Using the Command Line Interface Prerelease 8 September 2005, 8:55am

454 VERITAS Storage Foundation for Oracle Administrator’s Guide

Creating a Snapplan

Prerequisites

◆ You must be the Oracle database administrator.

◆ The disk group must be version 110 or later. For more information on disk group versions, see

the vxdg(1M) manual page.

◆ Be sure that a DCO and DCO volume are associated with the volume for which you are

creating the snapshot.

◆ Snapshot plexes and their associated DCO logs should be on different disks than the original

plexes, and should be configured correctly for creating snapshots by the system administrator.

◆ Persistent FastResync must be enabled on the existing database volumes and disks must be

assigned for the snapshot volumes.

◆ The database must be running in archive log mode. Archive log mode is set in the Oracle

initialization parameter file (init.ora).

◆ ORACLE_HOME cannot reside on disk which will be used for snapshot.

◆ QuickLog must be disabled before creating a snapplan.

Usage Notes

◆ The snapplan must be created on the primary host.

◆ After creating the snapplan using the dbed_vmchecksnap command, you can use a text

editor to review and update the file, if necessary.

◆ It is recommended that you create a local working directory to store your snapplans in.

SNAPSHOT_VOL_PREFIX Specifies the snapshot volume prefix. Use this variable to specify a

prefix for the snapshot volumes split from the primary disk group.

A volume name cannot be more than 32 characters.

ALLOW_REVERSE_RESYNC yes or no

By default, reverse resynchronization is off (set equal to no). If it is

set to yes, this parameter allows you to restore the original volume

from a snapshot. The original database, however, must be down for

this operation.

SNAPSHOT_MIRROR Specifies the number of plexes to be snapshot. The default value is

Parameter Value