I think the hard thing about this whole thing is that the connection creation fails, which is fine, but the diagnostics, which are plentiful, are completely useless, because they don't say why the failure occurred. I have log4j DEBUG turned on (the default for JBoss) and there is nothing that helps. Even MySQL does not log (as far as I can tell) error situations. Suggestions actively pursued! ...Lyall View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4190662#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...