You need a WEB-INF/jboss-web.xml file wit the following contents: <?xml version='1.0' encoding='UTF-8' ?> | <!DOCTYPE jboss-web PUBLIC "-//JBoss//DTD Web Application 2.4//EN" "http://www.jboss.org/j2ee/dtd/jboss-web_4_0.dtd"> | <jboss-web> | <resource-ref> | <res-ref-name>jdbc/JVantageDS</res-ref-name> | <jndi-name>java:jdbc/JVantageDS</jndi-name> | </resource-ref> | </jboss-web> This maps the JNDI name your code uses to the JNDI name in JBoss. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002443#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...