Hello, To use Hibernate second level of cache, these two lines must be added in the persistence.xml file: | <property name="hibernate.cache.provider_class" value="org.jboss.ejb3.entity.TreeCacheProviderHook" /> | <property name="hibernate.treecache.mbean.object_name" value="jboss.cache:service=EJB3EntityTreeCache" /> | When working with the Seam framework, knowing that a treecache.xml configuration file exists and that the pojoCache component configured and started the cache, are these 2 lines still needed? Regards, Richard View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4001795#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...