Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

Using Veritas Extension for

Oracle Disk Manager

This chapter includes the following topics:

■ About Oracle Disk Manager

■ About Oracle Disk Manager and Oracle Managed Files

■ Setting up Veritas Extension for Oracle Disk Manager

■ How to prepare existing database storage for Oracle Disk Manager

■ Converting Quick I/O files to Oracle Disk Manager files

■ Verifying that Oracle Disk Manager is configured

■ Disabling the Oracle Disk Manager feature

About Oracle Disk Manager

Veritas Extension for Oracle Disk Manager is specifically designed for Oracle9i

or later to enhance file management and disk I/O throughput. The features of

Oracle Disk Manager are best suited for databases that reside in a file system

contained in Veritas File System. Oracle Disk Manager allows Oracle9i or later

users to improve database throughput for I/O intensive workloads with special

I/O optimization.

Veritas Extension for Oracle Disk Manager supports Oracle Resilvering. With

Oracle Resilvering, the storage layer receives information from the Oracle database

as to which regions or blocks of a mirrored datafile to resync after a system crash.

Oracle Resilvering avoids overhead from the VxVM DRL, which increases

performance.

Chapter