It depends what you do, but if you let your develper delete tables and such you will wnd up with troubles. For developers, it's usually better to let them play with a local JBoss AS and Hypersonic and move to a staging server once in a while to check against the DB that will be used in prod. In production it's different, you set up your JBoss AS to work on a cluster with a single datasource. it is designed for View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086465#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...