Ooopss... Then we are in trouble... Is it possible to configure MySQL and Hypersonic with a XA data sources. What we want to do is to use the default data source as the timer data source and then use JPA with an underlying MySQL (with MyISAM tables) and get this to work. A config example would be great. Thanks a lot for your help! Kind Regards /Oskar View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139514#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...