You could try a simple database like Apache Derby (http://db.apache.org/derby/) which is JDBC compliant, stores its database in the filesystem and can be run embedded inside another application. You would have to create another persistence-service for Derby based on the ones contained in the examples/config directory of the distribution. I've never used Derby in anger, so I don't know how it performs. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3986717#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...