Sun Cluster 2.2 Software Installation Guide

14.1.4.2 Configuring Oracle SQL*Net

Two ways to configure Oracle SQL*Net on the client (the TNSNAMES.ORA file) are shown below. The client reconnection time to the surviving instance is not influenced by the method used to configure Oracle SQL*Net.

ora =
 (DESCRIPTION =
 		(ADDRESS_LIST =
 			(ADDRESS =
 					(PROTOCOL = TCP)
 					(HOST = erlan)
 					(PORT = 1526) <- instance 1
 			)
 			(CONNECT_DATA= (SID=ora))
 		)
 	(ADDRESS_LIST =
 			(ADDRESS =
 				(PROTOCOL = TCP)
 					(HOST = weibull)
 					(PORT = 1526) <- instance 2
 			)
 			(CONNECT_DATA= (SID=ora))
 	)
 )
ora =
 (DESCRIPTION_LIST =
 	(DESCRIPTION =
    			(ADDRESS_LIST =
 				(ADDRESS =
 						(PROTOCOL = TCP)
 						(HOST = erlang)
 						(PORT = 1526))
 				(CONNECT_DATA = (SID = ora)(GLOBAL_NAME = ora))
 	)
 	(DESCRIPTION =
   			(ADDRESS_LIST =
         				(ADDRESS =
 						(PROTOCOL = TCP)
 						(HOST = weibull)
 						(PORT = 1526))
   				(CONNECT_DATA = (SID = ora1)(GLOBAL_NAME = ora))
 	)
 )

This configuration has listeners running for each of the instances.