If you are running Solaris 9, include the following entries in the /etc/nsswitch.conf configuration files on each node that can be the primary for oracle_server or oracle_listener resource so that the data service starts and stops correctly during a network failure:
passwd: files groups: files publickey: files project: files
The Sun Cluster HA for Oracle data service uses the super user command, su(1M), to start and stop the database. The network service might become unavailable when a cluster node's public network fails. Adding the above entries ensures that the su command does not refer to the NIS/NIS+ name services.