Getting duplicate messages

Question

          Hi,
          I have created a topic publisher and subscriber.
          When an event is generated I am getting duplicate messages
          for the same event.
          I need them to be excatly one. I think they are generating messages as atleast
          one.
          can you please help.
          thanks
          Padmaja
          

Answer 1

If you are receiving 5 messages with 5 different message ids, then you are
          likely doing that yourself. When we redeliver messages (for any reason),
          the message ids stay the same. Message ids are assigned as part of the send
          call and nowhere else in the entire code base. So it sure sounds like you
          are doign multiple sends. Println goes a long way here. Instrument your
          code before every send/publish call and then print out the message id
          immediately after the call. maybe even do a new
          Exception("DEBUG").printStackTrace(), so you can see where you are doing
          it.
          _sjz.
          "Padmaja Ragavendra" <[email protected]> wrote in message
          news:[email protected]...
          >
          > No I am not using recover or rollback.
          > The message ids are different but of the same event.
          > From a session bean everytime an object(EB) changes state
          > a trasmit is called.
          > on a single state change 5 messages are being generated with different
          ids.
          > I am using publish(message).
          > I tried using delivery mode etc but still is giving the same result.
          > thanks for the reply.
          > Padmaja
          >
          >
          > "Zach" <[email protected]> wrote:
          > >are you using transactions? are you calling recover or rollback? are
          > >the
          > >message ids identical?
          > >_sjz.
          > >
          > >"Padmaja Ragavendra" <[email protected]> wrote in message
          > >news:[email protected]...
          > >>
          > >> Hi,
          > >> I have created a topic publisher and subscriber.
          > >> When an event is generated I am getting duplicate messages
          > >> for the same event.
          > >> I need them to be excatly one. I think they are generating messages
          > >as
          > >atleast
          > >> one.
          > >> can you please help.
          > >>
          > >> thanks
          > >> Padmaja
          > >
          > >
          >