How to Create a VxVM Shared-Disk Group for the Oracle RAC Database

Perform this task only if you are using VxVM with the cluster feature.

If you are using VxVM with the cluster feature, VxVM requires a shared-disk group for the Oracle RAC database or ASM to use.

Before You Begin

Note the following points.

• Ensure that the required Sun Cluster Support for Oracle RAC software packages are installed on each node. For more information, see Installing the Sun Cluster Support for Oracle RAC Packages.

• Do not register the shared-disk group as a cluster device group with the cluster.

• Do not create any file systems in the shared-disk group because only the raw data file uses this disk group.

• Create volumes as the gen use type.

• Disks that you add to the shared-disk group must be directly attached to all the cluster nodes.

• Ensure that your VxVM license is current. If your license expires, the node panics.

1. Use VERITAS commands that are provided for creating a VxVM shared-disk group.

   For information about VxVM shared-disk groups, see your VxVM documentation.

2. If you are using ASM, specify the raw devices that you are using for the ASM disk group.

   To specify the devices, modify the ASM_DISKSTRING ASM instance-initialization parameter.

   For example, to use the /dev/md/setname/rdsk/d path for the ASM disk group, add the value /dev/md/*/rdsk/d* to the ASM_DISKSTRING parameter. If you are modifying this parameter by editing the Oracle initialization parameter file, edit the parameter as follows:

   ASM_DISKSTRING = '/dev/md/*/rdsk/d*'

   If you are using mirrored devices, specify external redundancy in the ASM configuration.

   For more information, see your Oracle documentation.

Next Steps

Go to Registering and Configuring Storage Resources for Oracle Files.