Hmm, this is the interesting bit: | 2008-01-23 15:16:25,931 TRACE [org.jboss.cache.interceptors.TxInterceptor] No modifications in this tx. Skipping beforeCompletion() | here clearly has been a modification. Not that I recommend this in production, but to help debug, could you try the same with using the DummyTransactionManagerLookup instead of the GenericTransactionManagerLookup and let me know what happens? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4122709#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...