Alright, I did one more thing - in HSQL Database Manager from jmx console I did File > Connect with default settings - which are exactly the same as the defaults in hibernate.cfg.xml (password, user, driver and URL - jdbc:hsqldb:mem:.). I restored the default cfg file, so now I have <property name="hibernate.connection.url">jdbc:hsqldb:mem:.;sql.enforce_strict_size=true</property> back. But it still doesn't work. What am I missing now? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028751#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...