Setting Up the /etc/nsswitch.conf File

On each node that can master the logical host running Sun Cluster HA for Oracle, the /etc/nsswitch.conf file must have one of the following entries for group.

group:
group:		 	files
group:		 	files [NOTFOUND=return] nis
group:		 	files [NOTFOUND=return] nisplus

Sun Cluster HA for Oracle uses the su user command when starting and stopping the database node. The above settings will ensure that the su user command does not refer to NIS/NIS+ when the network information name service is not available due to failure of the public network on the cluster node.