Hi All,s I am running jboss-4.2.3.GA cluster. single node comes up fine but when I start the second node. I start getting "ORA-12519, TNS:no appropriate service handler found" on both the nodes. Please help. anonymous wrote : | 18:39:00,949 WARN [JBossManagedConnectionPool] Unable to fill pool | org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Listener refused the connection with the fol lowing error: | ORA-12519, TNS:no appropriate service handler found | The Connection descriptor used by the client was: | 10.107.7.243:1521:cmtedb | ) | at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.c reateManagedConnection(LocalManagedConnectionFactory.java:190) | at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.cr eateConnectionEventListener(InternalManagedConnectionPool.java:619) | at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.fi llToMin(InternalManagedConnectionPool.java:534) | at org.jboss.resource.connectionmanager.PoolFiller.run(PoolFiller.java:7 4) | at java.lang.Thread.run(Thread.java:595) | Caused by: java.sql.SQLException: Listener refused the connection with the follo wing error: | ORA-12519, TNS:no appropriate service handler found | The Connection descriptor used by the client was: | 10.107.7.243:1521:cmtedb | | at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java :112) | at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java :261) | at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387) | at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java: 439) | at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:165) | at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtensio n.java:35) | at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801) | at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.c reateManagedConnection(LocalManagedConnectionFactory.java:172) | ... 4 more | | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4212466#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...