Yes, modified all presistense classes for send the transaction control to Seam and now run perfectly. However, I do not obtain correct configuration for the Seam to use dataSource from Tomcat Container, only from microcontainer, cannot fixed the DB connection configuration inside project (WAR). Somebody has a suggestion, by another topic's not have? I'm not using EJB3. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050268#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...