Take a guess - what do you thnik @Transient means? :-) anything with this attrib will *not* be seralized when you use an ObjectOutputStrean to generate a byte stream to transmit on a network! Re: the Hibernate/JTA issue, note that the wiki page has been updated. Sure you can hack them to work together all it needs is a bit if glue code... ! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4103156#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...