How to configure my JMS QUEUE serve only one message at a time?

Hi All,
I have requirement where I need to develope a JMS QUEUE in weblogic. This MDB has to serve only one message at a time. Is there any way to configure via annotations or in weblogic server settings ?
Any help would be really appreciated...
Thank you,
K.

I'm not aware of any way to configure the max pool size via annotations, you might try posting to the EJB newsgroup (please post back the answer). Of course you can set the size via an EJB descriptor, as per the MDB chapter of the Performance and Tuning guide in the edocs.
By the way, if you have ordered message processing requirements, I highly recommend taking a look at the WebLogic JMS "Unit-of-Order" (UOO) feature as per the UOO chapter of the JMS programmer's guide. For a variety of reasons, the UOO features is often, by far, the best option for handling such requirements. If this feature applies to your use case, then there would be no need to force single threaded message processing in some sort of manual fashion (the feature enforces this for you).
Tom

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How to configure my MDB serve only one message at a time?

Hi All,
I have requirement where I need to develope a MDB iin weblogic. This MDB has to serve only one message at a time. If the send second message is sent while the first one is running the second message has to sit in queue and start processing once the first message is finished.
Is there any way to configure via annotations or in weblogic server settings ?
Any help would be really appreciated...
Thank you,
K.

Here is my client code to send the message
Connection connection = null;
javax.jms.Session session = null;
MessageProducer producer = null;
try
connection = lpConnectionFactory.createConnection();
session = connection.createSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
// Create a MessageProducer from the Session to the Validation Queue
producer = session.createProducer(myQueue);
((WLMessageProducer)producer).setUnitOfOrder();
// Create a message
ObjectMessage message = session.createObjectMessage();
message.setObject(params);
message.setStringProperty(MyServiceConstants.OPERATION, operation);
// Send the message to the queue
producer.send(message);
finally
if (producer != null)
producer.close();
if (session != null)
session.close();
if (connection != null)
connection.close();
Following is the weblogic-ejb-jar.xml
<?xml version="1.0"?>
<!DOCTYPE weblogic-ejb-jar PUBLIC
"-//BEA Systems, Inc.//DTD WebLogic 6.0.0 EJB//EN"
"http://www.bea.com/servers/wls600/dtd/weblogic-ejb-jar.dtd">
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>TestMDB</ejb-name>
<message-driven-descriptor>
     <pool>
          <max-beans-in-free-pool>1</max-beans-in-free-pool>
          <initial-beans-in-free-pool>1</initial-beans-in-free-pool>
     </pool>
</message-driven-descriptor>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>

How to configure a JMS Queue

Hi,
I have an EAR file thai includes an EJB 3.0 module with a MDB. I use a Queue.
This is my code,
@Resource(mappedName = "jms/NotificationQueue")
private Queue notificationQueue;
@Resource(mappedName = "jms/NotificationQueueFactory")
private ConnectionFactory notificationQueueFactory;
public Customer update(Customer customer){
Customer updated = em.merge(customer);
try {
sendJMSMessageToNotificationQueue(updated);
} catch (JMSException ex) {
Logger.getLogger(CustomerSessionBean.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("Customer updated in CustomerSessionBean!");
return updated;
private Message createJMSMessageForjmsNotificationQueue(Session session, Object messageData) throws JMSException
//Modified to use ObjectMessage instead
ObjectMessage tm = session.createObjectMessage();
tm.setObject((Serializable) messageData);
return tm;
private void sendJMSMessageToNotificationQueue(Object messageData) throws JMSException
Connection connection = null;
Session session = null;
try
connection = notificationQueueFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer messageProducer = session.createProducer(notificationQueue);
messageProducer.send(createJMSMessageForjmsNotificationQueue(session, messageData));
finally
if (session != null)
try
session.close();
catch (JMSException e)
Logger.getLogger(this.getClass().getName()).log(Level.WARNING, "Cannot close session", e);
if (connection != null)
connection.close();
layed inside a stateless EJB 3.0.
And the MDB looks as follow,
@MessageDriven(mappedName = "jms/NotificationQueue", activationConfig = {
@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
public class NotificationBean implements MessageListener {
public NotificationBean() {
public void onMessage(Message message)
try
Object msgObj = ((ObjectMessage)message).getObject();
if (msgObj != null)
Customer customer = (Customer)msgObj;
System.out.println("Customer with the following details has been updated:");
StringBuilder sb = new StringBuilder();
sb.append("Customer ID=");
sb.append(customer.getCustomerId());
sb.append(", ");
sb.append("Name=");
sb.append(customer.getName());
sb.append(", ");
sb.append("Email=");
sb.append(customer.getEmail());
System.out.println(sb.toString());
catch (JMSException ex)
Logger.getLogger(NotificationBean.class.getName()).log(Level.SEVERE, null, ex);
I have configured both "jms/NotificationQueue" and "jms/NotificationQueueFactory" inside OC4J server.
But when I try to deploy the EAR file, the server gives me the following error,
Operation failed with error: No destination location set for message-driven bean NotificationBean
How must I do to let the EAR file be deployed?
Thanks in advance
Jose

Mingzhuang
I want to configure a error queue for weblogic jms topic. Wanted: The message goes to error destination when messages have expired or reached their redelivery limit.
1. using jms transport configure proxy service:
Retry Count :3
Retry Interval:10
Error Destination: ErrorTopic
Expiration olicy: RedirectUnlike File/SFTP, JMS proxy service definition does not have the concept of Error Destination. To accomplish similar functionality go to JMSQ on (for which proxy is configured) server console (http://localhost:7001/console) and configure the Error Destination. Following URL will help in how to configure JMS Q.
http://edocs.bea.com/wls/docs103/ConsoleHelp/taskhelp/jms_modules/queues/ConfigureQueues.html
http://edocs.bea.com/wls/docs103/ConsoleHelp/taskhelp/jms_modules/queues/ConfigureQueueDeliveryFailure.html
I tried use the proxy service to consume message from the jms topic . and generation an error in the proxy message flow. But the message didn't goes into the error topic.If every thing is configured as per above step, then the after retries, the weblogic server will put the message into JMS topic configured. Your proxy will receive from this topic.
Let me know if we are not on same page.
Cheers
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Hello,
          I would like to know how I can setup a system with a JMS Queue and only one
          consumer.
          I think I can create a MDB and specify in the DD that I want only one
          instance of the EJB so that I can have only one consumer.
          Can anyone confirm this assertion ?
          regards,
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          Dominique Jean-Prost wrote:
          > Hello,
          >
          >
          > I would like to know how I can setup a system with a JMS Queue and only one
          > consumer.
          >
          > I think I can create a MDB and specify in the DD that I want only one
          > instance of the EJB so that I can have only one consumer.
          >
          > Can anyone confirm this assertion ?
          Yes.
          For more information on configuring MDB concurrency see
          the JMS Performance Guide white-paper here:
          http://dev2dev.bea.com/technologies/jms/index.jsp
          >
          > regards,
          >
          > Dom
          >
          >

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HI,
Can i any one help me,
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Edited by: 886478 on Sep 20, 2011 10:17 PM

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How to configure my JMS QUEUE serve only one message at a time?

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