BTW if i use pojo persistence what's my benefit if i use @Transactional and what will happen if i don't use it? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4087039#4087039 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4087039