Hi Chris, in the log files there aren't any errors or exceptions. I have also updated the hibernate.cfg.xml files, in jboss-4.2.0.GA\server\default\deploy\jboss-portal.sar\conf\hibernate subfolders, specifying org.hibernate.dialect.Oracle9Dialect but I still have the same problem. My environment is: - Windows XP SP2 - JDK 1.5.0_11-b03 - Oracle Database 10g Express Edition Release 10.2.0.1.0 - Oracle Database 10g Release 2 JDBC Driver (ojdbc14.jar) - JBoss AS 4.2.0 GA - JBoss Portal 2.6 GA Regards Angelo View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063348#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...