Veritas Storage Foundation 5.1 SP1 Cluster File System Administrator"s Guide (5900-1738, April 2011)

are installed. The Veritas Extension for Oracle Disk Manager library is linked to
the library in the {ORACLE_HOME}/lib directory.
If you are performing a local Oracle installation, not on the SFCFS file system,
then ODM linking needs to be performed on all nodes in the cluster.
Before setting up Veritas Extension for Oracle Disk Manager, the following
conditions must be met:
■ Veritas Storage Foundation for cluster File System must be
installed on your system.
■ Oracle10g, or later, must be installed on your system.
■ If Cached Quick I/O is available, do not enable Oracle Disk Manager
when Cached Quick I/O is enabled for datafiles.
Prerequisites
■ When the Quick I/O feature is available, Oracle Disk Manager uses
the Quick I/O driver to perform asynchronous I/O. Do not turn off
the Quick I/O mount option, which is the default.
■ Oracle uses default file access methods if Oracle10g or later or
Veritas Storage Foundation for Cluster File System is not installed,
or VxFS 5.1 is not available in the kernel.
Usage Notes
Preparing existing database storage for Oracle Disk
Manager
Non-Quick I/O files in a VxFS file system work with Oracle Disk Manager without
any changes. The files are found and identified for Oracle Disk Manager I/O by
default. To take full advantage of Oracle Disk Manager datafiles, files should not
be fragmented.
If you are using Quick I/O files in a VxFS file system and you want to move to
Oracle Disk Manager, convert the Quick I/O files to normal files using the
qio_convertdbfiles -u command.
You must be running Oracle10g or later to use Oracle Disk Manager.
Converting Quick I/O files to Oracle Disk Manager
files
If you plan to run the Veritas product with Oracle10g or later, and you have been
using Quick I/O files, Symantec recommends that you convert your Quick I/O files
to regular files. This should be done after you upgrade.
Using Veritas Extension for Oracle Disk Manager
Preparing existing database storage for Oracle Disk Manager
132