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

Because Veritas Storage Foundation for Oracle RAC uses multiple hosts, an Oracle
RAC configuration appears much like a two-host configuration, but without the
concepts of "off-host" processing or primary and secondary hosts.
Figure 13-2 shows a two-host configuration, or the equivalent with an Oracle RAC
configuration.
For off-host processing applications, both the primary and secondary hosts need
to share the storage in which the snapshot database is created. Both the primary
and secondary hosts must be able to access the disks containing the snapshot
volumes.
See “Accessing an off-host repository in a non-VCS environment” on page 74.
Figure 13-2
Example of an off-host or Oracle RAC Database FlashSnap solution
Network or
RAC cluster
Disks containing primary
volumes used to hold
production databases
Disks containing snapshot
volumes
SCSI or Fibre Channel
Connectivity
Secondary Host or RAC Node2
Primary Host or RAC Node1
1 2
Host and storage requirements
Before using Database FlashSnap, ensure that:
■ All files are on VxFS file systems over VxVM volumes. Raw devices are not
supported.
■ Symbolic links to datafiles are not supported.
■ ORACLE_HOME is on a separate file system.
■ Archive logs are on a separate VxFS file system (or cluster file system) and are
on a different VxFS file system (or cluster file system) than Oracle datafiles
or ORACLE_HOME.
■ The database does not contain BFILES and external tables.
225Using Database FlashSnap for backup and off-host processing
Hosts and storage for Database FlashSnap