VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Preparing Hosts and Storage for Database FlashSnap Prerelease 8 September 2005, 8:55am

204 VERITAS Storage Foundation for Oracle Administrator’s Guide

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.

Example of an Off-Host Database FlashSnap Solution

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 and are on a different VxFS file system than

Oracle datafiles or ORACLE_HOME.

◆ The database does not contain BFILES and external tables.

◆ Oracle datafiles, archive logs, redo logs, and control files are in a single disk group.

In addition, before attempting to use Database FlashSnap with two hosts, ensure that:

◆ The versions of VERITAS Storage Foundation for Oracle on the primary and secondary hosts

are the same.

Network

Disks containing primary

volumes used to hold

production databases

Disks containing snapshot

volumes

SCSI or Fibre

Channel Connectivity

Secondary Host

Primary Host