Converting From HFS to VxFS For Oracle Disk Manager

If you are currently using HFS file systems, you can use the following procedure to upgrade each file system used by the database to a VxFS file system. You can then use the Oracle Disk Manager feature.

Prerequisites

• Configure Oracle Disk Manager according to Setting Up VERITAS Extension for Oracle Disk Manager.

  To convert an HFS file system to VxFS for Oracle Disk Manager

1. Shut down the database.
2. Create a backup of the HFS file system.
3. Unmount the HFS file system.
4. Remove the HFS entry in the /etc/fstab file.
5. Create a VxFS file system of the same size as the original HFS file system, using the mount point where the HFS file system was originally mounted. Use the procedure described in Creating a VxFS File System to create a VxFS file system.
6. Preallocate ODM files using odmmkfile. Make the files the same size or larger than what they were on the original HFS file system.
7. Restore the backup created in step 2 to the new VxFS file system.
8. Restart the database.