Veritas Storage Foundation for Oracle 5.0 Administrator's Guide, HP-UX 11i v3, Second Edition, December 2008

Table A-4
Snapplan parameters (continued)
ValueParameter
yes or no
By default, reverse resynchronization is off (set equal to
no). If it is set to yes, this parameter allows you to restore
the original volume from a snapshot. The original database,
however, must be down for this operation.
In a Veritas Storage Foundation for Oracle RAC
environment, this parameter must be set to no.
ALLOW_REVERSE_RESYNC
Specifies the number of plexes to be snapshot. The default
value is 1.
SNAPSHOT_MIRROR
Creating a snapplan
Before creating a snapplan, the following conditions must be met:
■ 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(s) 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).
■ ORACLE_HOME cannot reside on disk which will be used for
snapshot.
■ If the QuickLog feature is available, it must be disabled before
creating a snapplan.
Prerequisites
339Veritas Storage Foundation for Oracle Command Line Interface
About the command line interface