Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

Consider the following limitations when working with Storage Checkpoints carried
over from the primary database:
■ Any mounted Storage Checkpoints must be unmounted. before running the
following command::
$ /opt/VRTS/bin/dbed_vmclonedb -o umount,new_sid=new_sid \
server_name=svr_name -f SNAPPLAN
■ It is only possible to mount a Storage Checkpoint carried over with the snapshot
volumes in a two-host configuration if the snapshot volumes were mounted
with the dbed_vmclonedbcommand with the -o mount option without the use
of -r relocate_path..
■ Storage Checkpoints carried over with the snapshot volumes can be mounted
before a clone database is created using dbed_vmclonedb with the -o mount
option. After a clone database is created using dbed_vmclonedb with the -o
recoverdb option, however, Storage Checkpoints are no longer present.
To back up the database using the snapshot
◆
Copy the snapshot volumes to tape or other appropriate backup media.
If you use the Oracle online backup method, you must also back up all the
archived log files in order to do a complete restore and recovery of the
database.
Restoring from backup
Backup copies are used to restore volumes lost due to disk failure, or data destroyed
due to human error. If a volume's data is corrupted and you know that you need
to restore it from backup, you can use Database FlashSnap's reverse
resynchronization function to restore the database.
See “Resynchronizing your database to the snapshot” on page 287.
Cloning a database (dbed_vmclonedb)
Veritas Storage Foundation lets you create a clone database using snapshot
volumes. You can use snapshots of a primary database to create a clone of the
database at a given point in time. You can then implement decision-support
analysis and report generation operations that take their data from the database
clone rather than from the primary database to avoid introducing additional
burdens on the production database.
A clone database can also serve as a valid back up of the primary database.
Using Database FlashSnap for backup and off-host processing
Cloning a database (dbed_vmclonedb)
278