Hi Manik, Thanks for the reply, Actually I was importing the wrong libraries accidently, instead of Jboss cache libraries few of the libraries were from glassfish besides that in build.xml file at diferent nodes the isolation level was not the same. So the problem is resolved. I am working on research project, in which I am optimizing cache for certain requirements. Thanks a lot for help. Meena View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193173#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...