Hi, I have configured jboss cache programatically though a servlet on glass fish in clustered environment and cluster name in cache configuration file is "JBossCache-Cluster" Now My requirement is whenever an instance is trying to change the values of POJO's in this cache other instance should not able to read or write in this cache(exclusive lock on entire cache) My understanding is whenever i start a transaction, it will acquire an exclusive lock on entire cache, is this correct? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4119926#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...