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
92
SNAPSHOT_MODE=online
SNAPSHOT_PLAN_FOR=database
SNAPSHOT_PLEX_TAG=dbed_flashsnap
SNAPSHOT_VOL_PREFIX=SNAP_
ALLOW_REVERSE_RESYNC=no
SNAPSHOT_MIRROR=1
By default, a snapplan’s SNAPSHOT_PLEX_TAG value is set as dbed_flashsnap.
You can use the -p option to assign a different tag name. Make use of the -p
option when creating the snapplan with the setdefaults option.
• In the following example, the -p option is used with setdefaults to assign my_tag
as the SNAPSHOT_PLEX_TAG value.
# dbed_vmchecksnap -S $ORACLE_SID -H $ORACLE_HOME -O \
setdefaults -p my_tag -f snap1 -t PROD
Snapplan snap1 for PROD
=====================================================
SNAPSHOT_VERSION=5.0
PRIMARY_HOST=host1
SECONDARY_HOST=host2
PRIMARY_DG=PRODdg
SNAPSHOT_DG=SNAP_PRODdg
ORACLE_SID=PROD
ARCHIVELOG_DEST=/arch_data
SNAPSHOT_ARCHIVE_LOG=yes
SNAPSHOT_MODE=online
SNAPSHOT_PLAN_FOR=database
SNAPSHOT_PLEX_TAG=my_tag
SNAPSHOT_VOL_PREFIX=SNAP_
ALLOW_REVERSE_RESYNC=no
SNAPSHOT_MIRROR=1
Creating Multi-mirror Snapshots
To make Database Snapshots highly available, the snapped snapshot volume should
contain more than one mirror. This makes the snapshot volumes available even if one of
the mirrors gets disabled. Snapshot volumes can be mounted and the entire database
snapshot is usable even if one of the mirror gets disabled. The multi-mirror snapshots
are enabled by SNAPSHOT_MIRROR=<n> in the snapplan.
NOTE There are no changes to the command-line usage or arguments for the Flashsnap tools.