#1 Can be implemented using a Hibernate Filter, which we have special support for in Seam. #2 or #3 Can be implemented using multiple SessionFactories, or EntityManagerFactories. You would need to do a little trick when the user logs in, to map the SessionFactory you are interested in for this user to the context variable that your Seam-managed persistence context uses. But this is trivial to implement and will work well. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4049123#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...