Veritas Storage Foundation 5.0 for Oracle RAC Configuration Guide Extracts for HP Serviceguard Storage Management Suite, Second Edition, May 2008

Using FlashSnap for Backup and Recovery

Creating a Snapplan (dbed_vmchecksnap)

Chapter 5

Before creating a snapplan, make sure the following conditions have been met:

To create a snapplan

1. Change directories to the working directory you want to store your snapplan in.

$ cd /working_directory

2. Create a snapplan with default values using the dbed_vmchecksnap command:

$ /opt/VRTS/bin/dbed_vmchecksnap -S ORACLE_SID \

-H ORACLE_HOME -f SNAPPLAN -o setdefaults -t host_name \

[-p PLEX_TAG]

3. Open the snapplan file in a text editor and modify it as needed.

Table 5-4 Snapplan Requirements

Prerequisites • You must have configured the storage for Database

Flashsnap.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).

• The Oracle database must have at least one mandatory archive

destination.ORACLE_HOME cannot reside on disk which will be

used for snapshot.

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.

•See the dbed_vmchecksnap(1M) online manual page for more

information.

•If the SNAPSHOT_MODE for the database is set to online, the

primary and secondary hosts can be the same. If the

SNAPSHOT_MODE is set to offline or instant, the primary and

secondary hosts must be different.