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 Snapshot (dbed_vmsnap)
Chapter 5
101
$ /opt/VRTS/bin/dbed_vmsnap -S ORACLE_SID -f SNAPPLAN \
-o snapshot [-F]
NOTE To force snapshot creation, use the -F option. The -F option can be used after a snapshot
operation has failed and the problem was fixed without using Veritas Storage
Foundation for Oracle commands. (That is, the volumes were synchronized without
using Veritas Storage Foundation for Oracle commands.) In this situation, the status of
the snapplan will appear as unavailable for creating a snapshot. The -F option ignores
the unavailable status, checks for the availability of volumes, and creates the snapshot
after the volumes pass the availability check.
NOTE After the snapshot is created, dbed_vmsnap returns values you will need to run
dbed_vmclonedb. These values include the snapshot disk group, the snapplan name, and
the VxDBA repository volume for a two-host configuration. Make a note of these values
so you have them when running dbed_vmclonedb.
NOTE You can also use the command dbed_vmchecksnap -f snapplan -o list to access the
information regarding the snapshot disk group, the snapplan name, and the VxDBA
repository.
The snapshot volumes now represent a consistent backup copy of the database. You can
backup the database by copying the snapshot volumes to tape or other backup media.
You can also create another Oracle database for decision-support purposes.
• In this example, a snapshot image of the database, PROD, is created for a single-host
configuration. In this case, the SECONDARY_HOST parameter is set the same as the
PRIMARY_HOST parameter in the snapplan.
$ /opt/VRTS/bin/dbed_vmsnap -S PROD -f snap1 -o snapshot
dbed_vmsnap started at 2006-03-02 14:15:27
VxDBA repository is up to date.
The database is running in archivelog mode.
A snapshot of ORACLE_SID PROD is in DG SNAP_PRODdg.
Snapplan snap1 is used for the snapshot.
If -r <relocate_path> is used in dbed_vmclonedb, make sure
<relocate_path> is created and owned by Oracle DBA. Otherwise, the
following mount points need to be created and owned by Oracle DBA:
/prod_db.
/prod_ar.
dbed_vmsnap ended at 2005-03-02 14:16:11
• In this example, a snapshot image of the primary database, PROD, is created for a
two-host configuration. In this case, the SECONDARY_HOST parameter specifies a
different host name than the PRIMARY_HOST parameter in the snapplan.