VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Prerelease 8 September 2005, 8:54am 123

Using VERITAS Extension for 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.

Oracle Disk Manager reduces administrative overhead by providing enhanced support for Oracle

Managed Files. VERITAS Extension for Oracle Disk Manager has Quick I/O-like capabilities, but

is transparent to the user. Unlike VERITAS Quick I/O, files managed using VERITAS Extension

for Oracle Disk Manager do not require special file naming conventions. The Oracle Disk Manager

interface uses regular database files. With Oracle9i or later, you can access both Oracle Disk

Manager and Quick I/O files so you have the option to convert or not to convert your old Quick I/O

files.

Note If you are using Oracle8i, we recommend using Quick I/O.

Note VERITAS Storage Foundation 4.1 for Oracle is the last major release that supports Oracle

Disk Manager for raw devices.

This chapter describes how to set up and use the Oracle Disk Manager feature.

Topics covered in this chapter include:

◆ “Understanding Oracle Disk Manager” on page 124

◆ “Oracle Disk Manager and Oracle Managed Files” on page 127

◆ “Setting Up VERITAS Extension for Oracle Disk Manager” on page 130

◆ “Preparing Existing Database Storage for Oracle Disk Manager” on page 132

◆ “Converting Quick I/O Files to Oracle Disk Manager Files” on page 133

◆ “Verifying that Oracle Disk Manager is Configured” on page 134

◆ “Disabling the Oracle Disk Manager Feature” on page 136