org.JNP is part of JBoss's JNDI impl. What's in your .war classpath? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046694#4046694 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4046694