Following http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossCacheHibernate, I have made following changes: 1. Created treecache.xml and placed that in jboss-portal-ha.sar. This file basically has TreeCache mbean and it's attribute defined. 2. Modified conf/hibernate/**/hibernate.cfg.xml so that it has org.hibernate.cache.OptimisticTreeCacheProvider as provider class. I get following error during deployment now. --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM --- ObjectName: portal:service=Hibernate,type=Portlet State: FAILED Reason: org.hibernate.cache.CacheException: javax.management.MalformedObjectNameException: Invalid character ':' in value part of property I Depend On: jboss.jca:service=DataSourceBinding,name=PortalDS portal:service=TreeCacheProvider,type=hibernate Depends On Me: portal.wsrp:service=PersistenceManager portal:service=PersistenceManager,type=Producer ObjectName: portal:service=Hibernate,type=PortalObject State: FAILED Reason: org.hibernate.cache.CacheException: javax.management.MalformedObjectNameException: Invalid character ':' in value part of property I Depend On: jboss.jca:service=DataSourceBinding,name=PortalDS portal:service=TreeCacheProvider,type=hibernate Depends On Me: portal:container=PortalObject ObjectName: portal:service=Hibernate State: FAILED Reason: org.hibernate.cache.CacheException: javax.management.MalformedObjectNameException: Invalid character ':' in value part of property I Depend On: jboss.jca:service=DataSourceBinding,name=PortalDS portal:service=TreeCacheProvider,type=hibernate Depends On Me: portal:service=Module,type=IdentityServiceController ObjectName: portal:service=Hibernate,type=Instance State: FAILED Reason: org.hibernate.cache.CacheException: javax.management.MalformedObjectNameException: Invalid character ':' in value part of property I Depend On: jboss.jca:service=DataSourceBinding,name=PortalDS portal:service=TreeCacheProvider,type=hibernate Depends On Me: portal:service=InstanceContainerContext View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101105#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...