It's not the default behavior. The default behavior is to flush a persistence context (translation: dirty check objects, generate and execute SQL DML) when a transaction commits. If you use Hibernate as your JPA provider, you can enable FlushModeType.MANUAL when you begin a conversation, so that the persistence context bound to that conversation is only flushed when you call entityManager.flush(). Please also read the Seam documentation, I'm basically quoting verbatim. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4039633#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...