Yes, that's what I tried: I have to use a SQLServer database instead of the hypersonic. And I did like it's written in your link - what I wrote above. I think the problem is the xml I posted above - that's the only part that differs from the way in the text that you linked because the syntax is another one. (Ok - and the fact that I copied the 3 driver libs into the lib folder also differs - in the example there is only one lib to copy.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120412#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...