If i comment the following: TransactionManager tm = Spring.getBean ( TransactionManager.class , "atomikosTransactionManager" ); | cache.getCache().getConfiguration().getRuntimeConfig().setTransactionManager(transactionManager); the behaviour is completely different: -instead of a single transaction spanning all operations between a SET AUTOCOMMIT FALSE and ROLLBACK, the log file structure is more complicated, including many SET AUTOCOMMIT FALSE and SET AUTOCOMMIT TRUE. More importantly there is no ROLLBACK at the end. -consequently the data is really persisted So, it works with the default, local transaction manager, but not with a JTA TM (Atomikos) .. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4263621#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...