We use EJB in cluster environment. We have one oracle database. our existed system use TXConnection(transactional connection) for the data insert, update and delete. Using the Connection for the data retriving. I think TXConnection fits to use for the distributed database. So we should change our DAO layer to use only Connection. Is that true? Need help. Thanks. Jack Tie View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3959145#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...