I used resource injection with JBoss 4.2.2 and Oracle 10g, and there was no probem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4155541#4155541 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4155541