Please help. I am using javassist in ejb 3 deployer. hibernate.bytecode.provider=javassist View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172048#4172048 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4172048