makes sense. but i'm still in doubt about the availability and portability of JavaDB based solutions. Which libs do we ship with. Which versions of JVM's have which versions of JavaDB inside. In case of hsqldb we just ship the lib and we always know the exact version. So it's easier to test with. On the other hand, we should be able to control this if we set up our continuous integration properly. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4135576#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...