"manik.surtani(a)jboss.com" wrote : I realise you're not interested in pessimistic locking, but any optimisation needs to be generic enough to work across both schemes. :-) | I'll try to generify my optimization :) anonymous wrote : Not if this is within a tx. This could cause the whole tx to rollback. As far as I understand by reading PessimisticLockInterceptor, rollback is caused by UpgradeException/TimeoutException/... propagating through the stack. So the easiest solution is to ignore these exceptions for putSilent() nodes. Am I correct? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086257#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...