WebSphere MQ Acknowledgement and Reply-To Queue

Question

We are sending XML text messages via a remote queue definition CLIENT.DATA (transmit queue, send/recv channels etc.) from our queue manager QM_MINE queue manager QM_CLIENT and queue CLIENT.DATA. The message reaches the destination (CLIENT.DATA queue at the client's). The problem at hand is to able to receive acknowledgement messages (exact copy of the message sent) on a local queue CLIENT.DATA.ACK in QM_MINE as soon as messages reaches CLIENT.DATA in QM_CLIENT automatically.

I found couple of resources at WebSphere v7.1 infocenter on reply-to queue and message acknowledgement however they were not really helpful to me.

So far I tried to use the reply to queue way. I created a transmit queue QM_MCT on QM.OCC. Every message I send to the CLIENT.DATA queue, I specified the reply-queue using setJMSReplyTo() method. However I am sure that is not it, there is more I am missing.

MQ Objects Summary:

QM_MINE: CLIENT_DATA (remoteQ), QM_CLIENT (transmitQ), CLIENT_DATA_ACK(localQ)

QM_CLIENT: CLIENT_DATA (localQ), QM_MINE (transmitQ),

And, sender/receiver channels at both ends.

Source Code Fragements:

Client Data Sender (under transaction):

public class ClientServiceImpl extends JmsGatewaySupport implements ClientService {

    @Override
    public void sendClientData(String dataXML) {
        getJmsTemplate().convertAndSend(dataXML);
    }
}

Message Converter :

public Message toMessage(Object o, Session session) throws JMSException, MessageConversionException {
    String dataXML = (String) o;
    TextMessage message = session.createTextMessage();
    message.setJMSReplyTo(replyToQueue);
    message.setText(dataXML);
    return message;
}

Note:

Current I don't have any MDP or MDB to listen and consume messages from CLIENT_DATA queue in QM_CLIENT. I merely send it from QM_MINE and it gets moved to QM_CLIENT by MQ. Do I need to consume the messages to get this working?

I use java, JMS , Spring and WebShere MQ v7.1 on Linux. Any more information will be provided upon request.

T.Rob T.Rob · Accepted Answer · 2012-02-29T21:45:19

Please see the section on the MQMD.Report field. Yes, you do need to set the reply-to fields so that the acknowledgement can find its way back to you. However you also need to tell WMQ that you want it to generate the report message. For what you want, set the field to MQRO_COA_WITH_FULL_DATA.

WebSphere MQ Acknowledgement and Reply-To Queue

1 Answers