Christian, "org.seam.microcontainer" package has been removed from Seam codebase, taking out a way to bootstrap Jboss Managed Connection Pool and JTA Transaction Manager as described in Seam 1.3. docs. I don't know JBoss Embedded internals at all, if I'm missing something, please elaborate. In general an interesting thing would be to have working example of such architecture: a. PostgresDS, PooledDS wired by Spring + b. HibernateSessionFactory wired by Spring (currently there is no way in Seam to specify custom naming strategy or easy, pluggable, create-drop/create switching) + c. Seam managed Session. I cannot achieve this with Seam's Spring integration as described in my cited post (http://www.jboss.com/index.html?module=bb&op=viewtopic&t=112972) Like I said before I'm a big fan of your work on this project and I perceive this whole decision as a one that can reduce integration of Seam... If there would be an easy Spring+Seam+Hibernate integration guide/example that would definitely help. Yes, I'm aware of Spring chapter in Seam Ref :). JCruise, you can follow http://wiki.jboss.org/wiki/Wiki.jsp?page=EmbeddedOptimizations to reduce bootstrap time if it's your major concern. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4061992#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...