on second thought, when you deploy the oracle-ds.xml JBoss will create the jndi entry for mcv_test. so you should be able to look it up without any resource-ref tags in your xml files. for example: my oracle-ds.xml <jndi-name>OracleDS</jndi-name> | <connection-url>jdbc:oracle:thin:@localhost:1521:orcl</connection-url> | and i can look it up with: DataSource ds = (DataSource)new InitialContext().lookup("java:/OracleDS"); and i have no resource-ref tags in web.xml or jboss-web.xml. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4074592#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...