jakarta tomcat 5 clustering with HACMP

[Thenu]

Hi everybody,
We are facing some configuration issues on jakarta
tomcat 5 while clusterting with HACMP(high avalibity pacakge). we have
RMI also.
The source works fine if we don't configure with HACMP. when we
configure the Tomcat with the clustering, serverside throws -
java.rmi.UnmarshalException: Error unmarshaling return header:
java.io.EOFException and the clientside javaconslole throws
-java.security.AccessControlException: access denied
(java.net.SocketPermission 127.0.0.1: accept,resolve). we feel the
problem is due to the configuration. what are the basic configuration
needs to done for the clustering?