I´ve realised that seam-gen hasn´t created a hibernate.cfg.xml. I´ve done it but the same error goes on. I´m not sure if that hibernate.cfg file is being readed. I have started with a database, and with seam-gen I´ve generated the pojos and views. The error happens when invoking the view because the pojos are not properly mapped. Any config suggestions? thank you! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055165#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...