do you only support a given selection of DBs? if so, you could try specifying multiple datasources in your persistence.xml. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4074954#4074954 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4074954