After you have installed the Oracle UDLM software on each cluster node, the next step depends on your storage management scheme.
If you are using VxVM without the cluster file system, go to Creating a VxVM Shared-Disk Group for the Oracle Parallel Server/Real Application Clusters Database to create a shared-disk group for the Oracle Parallel Server/Real Application Clusters database.
Otherwise, go to Registering and Configuring Sun Cluster Support for Oracle Parallel Server/Real Application Clusters to register and configure Sun Cluster Support for Oracle Parallel Server/Real Application Clusters.