Why can't Ifind my DataSource through a cluster?

Question

Hello!
I use Weblogic 8.1.6.
I have set up 1 adminserver at 127.0.0.1:7001.
I have set up 1 managedserver at 127.0.0.1:7011.
I have set up 1 managedserver at 127.0.0.1:7021.
I have set up a "Data Source". This data source is target on all servers. This datasource is pointing to a "Connection Pool" pointing to a oracle. The connection pool is target at all servers.
This runs fine when I throug a TestCase (JUnit) access the datasource like:
hashtable.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
          hashtable.put(Context.PROVIDER_URL, "t3://127.0.0.1:7011");
          context = new InitialContext(hashtable);
          javax.sql.DataSource dataSource = (javax.sql.DataSource) context.lookup( "my/jndi/name/DataSource");
Next step is to do the same in a cluster. Below is those params I think is of interesst of the cluster:
Cluster Address:127.0.0.1:7011,127.0.0.1:7021
Multicast Address:237.0.0.1
Multicast Port:7001
Frontend Host:127.0.0.1
Frontend HTTPPort:7040
Both the datasource and connection pool above now gets targeted at:
Part of the cluster at all nodes (7011,7021)
I have also tried to target the datasource and connection pool above as "All servers in the cluster"
But if I then run the code above with change of the port like
hashtable.put(Context.PROVIDER_URL, "t3://127.0.0.1:7040");
Then I get this error:
javax.naming.CommunicationException [Root exception is java.net.ConnectException: t3://127.0.0.1:7040: Destination unreachable; nested exception is:
java.net.ConnectException: Connection refused: connect; No available router to destination]
If any one got any idea how to solve this please let me know! I would like to have just 1 port as front, perhaps this is not possible?
Best regards
Fredrik

Answer 1

Hello!
I think this is a suitable solution.
If I put the cluster address as the Context.PROVIDER_URL like:
hashtable.put(Context.PROVIDER_URL, "t3://127.0.0.1:7011,127.0.0.1:7021");
Then it worked fine!
Best regards
Fredrik