For those table matching to cmp bean or cmp relationship,can other program manipulate these data concurrently? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961205#3961205 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3961205