Thanks for taking a look at this. The resource ref is in my web.xml file, like I said it works perfectly under JBOSS, the webservice I am doing is just a helloworld, the only difference is that I try to connect to the database. All code that works fine. It is some kind of configuration problem. web.xml <web-app> | <resource-ref> | <description>MySql Dataset Definition</description> | <res-ref-name>jdbc/MySqlDS</res-ref-name> | <jndi-name>java:/MySqlDS</jndi-name> | <res-type>javax.sql.DataSource</res-type> | <res-auth>Container</res-auth> | </resource-ref> | <display-name>postSubmission</display-name> | </web-app> and my jboss-web.xml <?xml version="1.0" encoding="ISO-8859-1"?> | <!DOCTYPE jboss-web | PUBLIC "-//JBoss//DTD Web Application 2.3V2//EN" | "http://www.jboss.org/j2ee/dtd/jboss-web_3_2.dtd"> | <jboss-web> | | <!-- A security domain that restricts access | <security-domain>java:/jaas/JBossWS</security-domain> | --> | <context-root>jbossws</context-root> | <resource-ref> | <res-ref-name>jdbc/MySqlDS</res-ref-name> | <jndi-name>java:/MySqlDS</jndi-name> | </resource-ref> | </jboss-web> It's like JBOSSWS cant find the mysql-ds.xml or something. I tried to copy that into the jbossws deployment folder but then it error-ed out saying that it was already defined. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4224204#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...