The 1.4.1.SP3 GenericTransactionManagerLookup doesn't know how to find Glassfish's TM. In 2.0 it does, but that doesn't help you. Suggest you write your own TransactionManagerLookup implementation and use that. It's really trivial: | package com.foo.jbosscache; | | import javax.naming.InitialContext; | import javax.transaction.TransactionManager; | import org.jboss.cache.TransactionManagerLookup; | | public class GlassfishTransactionManagerLookup implements TransactionManagerLookup { | | public GlassfishTransactionManagerLookup() { | } | | public TransactionManager getTransactionManager() throws Exception { | return (TransactionManager)new InitialContext().lookup("java:appserver/TransactionManager"); | } | | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4058762#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...