Smitha Nair [http://community.jboss.org/people/smitha.nair] created the discussion "java.lang.IllegalStateException: cluster 'X' is already connected to singleton transport" To view the discussion, visit: http://community.jboss.org/message/549840#549840 -------------------------------------------------------------- Hi, We have deployed two wars in the same jboss node, which is a cluster member. One of the war is a customized jasig cas war . Both the wars are having the same cluster configuration to have distributed cache. Both the wars using the same clustername too. But when deploying the wars together, it is giving exception, Caused by: java.lang.reflect.InvocationTargetException        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)        at java.lang.reflect.Method.invoke(Method.java:597)        at org.jboss.cache.util.reflect.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:144)        ... 117 more Caused by: org.jboss.cache.CacheException: Unable to connect to JGroups channel        at org.jboss.cache.RPCManagerImpl.start(RPCManagerImpl.java:352)        ... 122 more Caused by: org.jgroups.ChannelException: failed to start protocol stack        at org.jgroups.JChannel.startStack(JChannel.java:1617)        at org.jgroups.JChannel.connect(JChannel.java:366)        at org.jboss.cache.RPCManagerImpl.start(RPCManagerImpl.java:347)        ... 122 more Caused by: java.lang.IllegalStateException: cluster 'X'  is already connected to singleton transport: [dummy-12334552211, X]        at org.jgroups.stack.Configurator.startProtocolStack(Configurator.java:88)        at org.jgroups.stack.ProtocolStack.startStack(ProtocolStack.java:402)        at org.jgroups.JChannel.startStack(JChannel.java:1614)        ... 124 more Can anyone please help us. Thanks Smitha -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/549840#549840] Start a new discussion in JBoss Cache at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]