Setting Up the /etc/nsswitch.conf Files With DBMS Data Services

The following applies to configurations using Sun Cluster HA for Oracle, Sun Cluster HA for Informix, or Sun Cluster HA for Sybase.

The Sun Cluster 2.2 Software Installation Guide contains erroneous information about how to set up the /etc/nsswitch.conf files for these DBMS data services. In order for the data services to start and stop correctly in case of switchovers or failovers, the /etc/nsswitch.conf files must be set up as follows.

On each node that can master the logical host running the DBMS data service, 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

The DMBS data services use 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.