title: JMS Message.acknowledge() on Session.AUTO_ACKNOWLEDGE
body: <p>What happens in TIBCO when Message.acknowledge() is invoked in a session with AUTO_ACKNOWLEDGE mode?<p>
  I mean is this call ignored on client-side? or server-side? or does server perform any action on this call?
  <p>
  The reason I ask is that there is an application which acks messasges in an auto acknowledge session. And a during highload period the method execution time is increased from 0.5 ms to 30 ms.</p>