I think you need to configure the prefetch size for the consumer - by default - the prefetch limit would be less than 10000 for a queue see: http://www.activemq.org/site/what-is-the-prefetch-limit-for.html for some hints about increasing the prefetch limits for a consumer

On 2 Nov 2006, at 15:55, cwl999 wrote:


I'm writing an application that needs to produce at most 10000 messages for every message consumed. This has to happen in a single transaction. If I use a non transacted session, everything works fine (but doesn't meet the requirements). If I set it to use a transacted session, the connection
hangs after a while with the following errors

3081 [main] DEBUG org.apache.activemq.ActiveMQSession - Sending message: ActiveMQObjectMessage {commandId = 0, responseRequired = false, messageId = ID:07166HOBDGXP-4713-1162482684322-1:0:1:1:109, originalDestination = null,
originalTransactionId = null, producerId =
ID:07166HOBDGXP-4713-1162482684322-1:0:1:1, destination = queue:// AWTX.TEST, transactionId = TX:ID:07166HOBDGXP-4713-1162482684322-1:0:1, expiration = 0, timestamp = 1162482687730, arrival = 0, correlationId = null, replyTo =
null, persistent = true, type = null, priority = 4, groupID = null,
groupSequence = 0, targetConsumerId = null, compressed = false, userID =
null, content = [EMAIL PROTECTED],
marshalledProperties = null, dataStructure = null, redeliveryCounter = 0, size = 0, properties = null, readOnlyProperties = true, readOnlyBody = true}
15001 [ActiveMQ Scheduler] DEBUG
org.apache.activemq.transport.InactivityMonitor - A send is in progress
29956 [ActiveMQ Scheduler] DEBUG
org.apache.activemq.transport.InactivityMonitor - A send is in progress
30003 [ActiveMQ Scheduler] DEBUG
org.apache.activemq.transport.InactivityMonitor - Message received since
last read check, resetting flag:

I've written a test prog to demo this

import java.io.Serializable;

import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;

public class Main implements Serializable
{
        static private Logger logger = Logger.getLogger(Main.class);

        byte[] dummy = new byte[100000];

        /**
         * @param args
         */
        public static void main(String[] args)
        {
                BasicConfigurator.configure();
                try
                {
                        ActiveMQConnectionFactory factory = new 
ActiveMQConnectionFactory(
                                        "tcp://localhost:61616");
                        Connection connection;
                        connection = factory.createConnection();
                        Session session = connection.createSession(true,
Session.SESSION_TRANSACTED);
                        MessageProducer producer =
session.createProducer(session.createQueue("AWTX.TEST"));
                        for (int i = 0; i < 1000; i++)
                        {
                                System.out.println(i);
ObjectMessage objectMessage = session.createObjectMessage(new Main());
                                producer.send(objectMessage);
                        }
                        producer.close();
                        session.commit();
                        session.close();
                        connection.close();
                }
                catch (JMSException e)
                {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }

        }

}


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