Veritas Storage Foundation 5.1 SP1: Storage and Availability Management for Oracle (5900-1504, April 2011)

■ The same version of Oracle is installed on both hosts, the Oracle binaries and
datafiles are on different volumes and disks.
■ The UNIX login for the database user and group must be the same on both
hosts. The UNIX UID and GID must also be the same.
■ You must have an Enterprise license on both hosts.
Creating a snapshot mirror of a volume or volume set used by the
database
With Database FlashSnap, you can mirror the volumes used by the database to a
separate set of disks, and those mirrors can be used to create a snapshot of the
database. These snapshot volumes can be split and placed in a separate disk group.
This snapshot disk group can be imported on a separate host, which shares the
same storage with the primary host. The snapshot volumes can be resynchronized
periodically with the primary volumes to get recent changes of the datafiles. If
the primary datafiles become corrupted, you can quickly restore them from the
snapshot volumes. Snapshot volumes can be used for a variety of purposes,
including backup and recovery, and creating a clone database.
You must create snapshot mirrors for all of the volumes used by the database
datafiles before you can create a snapshot of the database. This section describes
the procedure used to create snapshot mirrors of volumes.
Use the vxsnap command to create a snapshot mirror or synchronize a snapshot
mirror.
133Using Database FlashSnap for backup and off-host processing
Preparing hosts and storage for Database FlashSnap