We are getting the following error on both the nodes in the cluster if we deploy the application by specifying TCP discovery protocol in the jbosscache-config.xml. Below is the server log: [2/12/09 11:18:13:985 PST] 00000030 PropertyConfi I org.jboss.cache.PropertyConfigurator Found existing property editor for org.w3c.dom.Element: org.jboss.util.propertyeditor.ElementEditor@4154831d [2/12/09 11:18:14:001 PST] 00000030 PropertyConfi I org.jboss.cache.PropertyConfigurator configure attribute size: 19 [2/12/09 11:18:14:140 PST] 00000030 TreeCache W org.jboss.cache.TreeCache _createService No transaction manager lookup class has been defined. Transactions cannot be used [2/12/09 11:18:14:229 PST] 00000030 InterceptorCh I org.jboss.cache.factories.InterceptorChainFactory createPessimisticInterceptorChain interceptor chain is: class org.jboss.cache.interceptors.CallInterceptor class org.jboss.cache.aop.interceptors.PojoEvictionInterceptor class org.jboss.cache.interceptors.PessimisticLockInterceptor class org.jboss.cache.interceptors.UnlockInterceptor class org.jboss.cache.interceptors.ReplicationInterceptor class org.jboss.cache.interceptors.TxInterceptor class org.jboss.cache.interceptors.CacheMgmtInterceptor [2/12/09 11:18:14:475 PST] 00000030 UNICAST E org.jgroups.protocols.UNICAST setProperties window_size is deprecated and will be ignored [2/12/09 11:18:14:478 PST] 00000030 UNICAST E org.jgroups.protocols.UNICAST setProperties min_threshold is deprecated and will be ignored [2/12/09 11:18:14:650 PST] 00000034 ConnectionTab I org.jgroups.blocks.ConnectionTable start server socket created on 127.0.0.1:12000 [2/12/09 11:18:14:920 PST] 00000035 SystemOut O ------------------------------------------------------- GMS: address is 127.0.0.1:12000 ------------------------------------------------------- [2/12/09 11:18:16:965 PST] 00000030 TreeCache I org.jboss.cache.TreeCache startService TreeCache local address is 127.0.0.1:12000 [2/12/09 11:18:16:966 PST] 00000036 TreeCache I org.jboss.cache.TreeCache viewAccepted viewAccepted(): [127.0.0.1:12000|0] [127.0.0.1:12000] [2/12/09 11:18:16:987 PST] 00000037 ConnectionTab I org.jgroups.blocks.ConnectionTable$Connection matchCookie input_cookie is bela [2/12/09 11:18:16:987 PST] 00000030 TreeCache I org.jboss.cache.TreeCache fetchStateOnStartup State could not be retrieved (we are the first member in group) [2/12/09 11:18:16:997 PST] 00000034 ConnectionTab I org.jgroups.blocks.ConnectionTable getConnection created socket to 127.0.0.1:12000 [2/12/09 11:18:16:997 PST] 00000030 TreeCache I org.jboss.cache.aop.PojoCache parseConfig parseConfig(): PojoCacheConfig is empty jbosscache-config.xml reads as: <!-- Transport protocol: http://wiki.jboss.org/wiki/JGroupsUDP --> <!--UDP mcast_addr="239.255.133.9" mcast_port="9010" ip_ttl="1" ip_mcast="true" mcast_send_buf_size="150000" mcast_recv_buf_size="80000" ucast_send_buf_size="150000" ucast_recv_buf_size="80000" loopback="false" /--> <TCP bind_addr="" start_port="12000" end_port="12000"> <!-- Discovery protocols: http://wiki.jboss.org/wiki/JGroupsPING --> <PING timeout="2000" num_initial_members="3" up_thread="false" down_thread="false" /> <!-- Merging Protocols: http://wiki.jboss.org/wiki/JGroupsMERGE2 --> <MERGE2 min_interval="10000" max_interval="20000" /> <!-- Failure Detection Protocols: http://wiki.jboss.org/wiki/JGroupsFD_SOCK --> <FD_SOCK /> <!-- Failure Detection Protocols: http://wiki.jboss.org/wiki/JGroupsVERIFY_SUSPECT --> <VERIFY_SUSPECT timeout="1500" up_thread="false" down_thread="false" /> <!-- Reliable Message Transmission Protocols: http://wiki.jboss.org/wiki/JGroupsPbcastNAKACK --> <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800" max_xmit_size="8192" up_thread="false" down_thread="false" /> <!-- Reliable Message Transmission Protocols: http://wiki.jboss.org/wiki/JGroupsUNICAST--> <UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10" down_thread="false" /> <!-- Reliable Message Transmission Protocols: http://wiki.jboss.org/wiki/JGroupsPbcastSTABLE --> <pbcast.STABLE desired_avg_gossip="20000" up_thread="false" down_thread="false" /> <!-- Group membership protocol: http://wiki.jboss.org/wiki/JGroupsPbcastGMS --> <pbcast.GMS join_timeout="5000" join_retry_timeout="2000" shun="true" print_local_addr="true" /> <!-- Flow control protocol: http://wiki.jboss.org/wiki/JGroupsFC <FC max_credits="2000000" down_thread="false" up_thread="false" min_threshold="0.20"/>--> <!-- Fragmentation protocol: http://wiki.jboss.org/wiki/JGroupsFRAG --> <FRAG frag_size="8192" down_thread="false" up_thread="true" /> <!-- State tranfer protocol: http://wiki.jboss.org/wiki/JGroupsPbcastSTATE_TRANSFER --> <pbcast.STATE_TRANSFER up_thread="true" down_thread="true" /> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4209710#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...