the database is an odbc datasource connection to an external GIS application (it's quite special, i know) . The driver is sun.jdbc.odbc.JdbcOdbcDriver. The thing i wonder about is that the same code running as desktop app is working well (even the same java version). There seems to be some kind of influence between the jboss threads an the ODBC-connection. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4164445#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...