The code is possibly complaining about the lack of a JNDI name (it appears that the code is attempting to look up the datasource by name and not finding it). First, did you create a *-ds.xml file for your datasource and did you deploy it first? If you did not, you need to do that first. If you have a *-ds.xml file, add another entry to your jboss-web.xml file: <?xml version="1.0" encoding="UTF-8"?> | <jboss-web> | <resource-ref> | <res-ref-name>jdbc/TRAVEL_ApacheDerby</res-ref-name> | <jndi-name>java:--the jndi name of your datasource, from *-ds.xml--</jndi-name> | </resource-ref> | <security-domain flushOnSessionInvalidation="false"/> | <context-root>/SinglePageCrudTable</context-root> | </jboss-web> | | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4239848#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...