i debug the memory and note that in ajax requests , the hibernate session is the same .my configuration about hibernate session in component.xml is: <core:managed-hibernate-session name="session" auto-create="true" session-factory-jndi-name="java:/HibernateSessionFactory" /> and in the hibernate.cfg.xml i have added the properties according the seam manual: true after_statement org.hibernate.transaction.JBossTransactionManagerLookup org.hibernate.transaction.JTATransactionFactory View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047812#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...