Pending Messages waiting for Client Acknowledgement

          Hi,
          I have tried to search the Internet for an answer to this question but failed.
          Any clue???
          I have setup a queue on BEA WLS 7.4. I have four consumers which connect concurrently
          to dequeue messages. Each of the consumers serve as a proxy to other clients
          waiting for the messages.
          The proxy application (consumer) is developed such that it will send the client_acknowledge
          to the Q manager after it finishes processing the received message and sends it
          successfully to the external client.
          I noticed that in some exceptional cases which I cannot reproduce, the proxy application
          would fail to send the message to client and therefore wouldn't send the client_acknowldege.
          Although I tried to catch all possible exceptions, i cannot catch this single
          exception that causes my proxy to continue processing the messages in a proper
          way. The problem is that I end up with some Pending Messages on the queue which
          cannot be available to other consumers and would stay that way till the consumer
          that was attempting to dequeue it is killed.
          Isn't there any way to configure an expiry period for this client_acknowledge
          wait state??? In other words, is it possible to configure a time after which
          the JMS provider would no longer be waiting for the client_acknowledge and sends
          the pending message back to the Q in a state that makes it available to other
          consumers.

Sorry. Once a message has been received in "CLIENT_ACKNOWLEDGE" mode, it
          remains pending and unavailable to other consumers until either the consumer
          is closed, acknowledge is called, or the client disconnects.
          Have you tried using a transacted session? In that case, the transaction
          will time out eventually, which will roll back the transaction and make the
          message visible again. You can control the length of this timeout using the
          "TransactionTimeout" parameter on the JMS connection factory.
          greg
          "Muhannad" <[email protected]> wrote in message
          news:[email protected]...
          >
          > Hi,
          > I have tried to search the Internet for an answer to this question but
          failed.
          > Any clue???
          >
          > I have setup a queue on BEA WLS 7.4. I have four consumers which connect
          concurrently
          > to dequeue messages. Each of the consumers serve as a proxy to other
          clients
          > waiting for the messages.
          >
          > The proxy application (consumer) is developed such that it will send the
          client_acknowledge
          > to the Q manager after it finishes processing the received message and
          sends it
          > successfully to the external client.
          >
          > I noticed that in some exceptional cases which I cannot reproduce, the
          proxy application
          > would fail to send the message to client and therefore wouldn't send the
          client_acknowldege.
          > Although I tried to catch all possible exceptions, i cannot catch this
          single
          > exception that causes my proxy to continue processing the messages in a
          proper
          > way. The problem is that I end up with some Pending Messages on the queue
          which
          > cannot be available to other consumers and would stay that way till the
          consumer
          > that was attempting to dequeue it is killed.
          >
          > Isn't there any way to configure an expiry period for this
          client_acknowledge
          > wait state??? In other words, is it possible to configure a time after
          which
          > the JMS provider would no longer be waiting for the client_acknowledge and
          sends
          > the pending message back to the Q in a state that makes it available to
          other
          > consumers.

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public void run(){
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Your statement:
Socket server = serverP.accept();
it will block until Server receive connect request from client.
So, what u can do is, create a seperate Thread which check if server is idle (no client connect to it) for a certain time.
public class xxxxx extends Thread {
public void run(){
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   while (true){
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FYI, next time, please use [ code ] and [ / code ] to format your code. It discourage me to read plain whole-left-aligned code like yours.
See: http://forum.java.sun.com/features.jsp#Formatting
rgds,
Alex

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At the end of sync itunes hangs with message waiting for files to be transferred....iphone 4s?

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If I click 'clear now' in 'offline storage', do I need to wait for an acknowledgement that it has cleared or does it clear instantly?

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