JMS receive in JTA doesn't return message

Question

Hi
I am using Websphere Application server 6.1 (the one provided with RAD 7.0.0)and WebSphere MQ 6.0 as JMS provider.
I have a problem receiving message from queue when JTA transaction is active.
I configured Connection Factory as following:
Scope cells:ejbhostname:nodes:ejb:servers:server1
Name MQQueueConnectionFactory
JNDI Name foo/bar
Description empty
Category empty
Component-managed Authentication Alias none
Container-managed Authentication Alias none
Mapping-Configuration Alias DefaultPrincipalMapping
Queue Manager QMGR
Host 192.168.2.100
Port 1415
Channel CLIENT_CHANNEL
Transport Type CLIENT
Model Queue Definition empty
Client ID empty
CCSID empty
Message Retention enabled
XA Enabled enabled.
Everything seems to work fine but message reception time-out occurs when i try to synchronous receive message from queue.
Below is a code of my stateless session EJB method.
public void receiveMessage()
    throws NamingException,
    JMSException{
          Connection connection = null;
         Session session = null;
         MessageConsumer consumer = null;
         try {
             logger.log(myLevel, "Getting Initial Context");
             InitialContext context = new InitialContext();
             ConnectionFactory factory = (ConnectionFactory) context.lookup("java:comp/env/jms/JMSExampleConnectionFactoryRef");           
             Destination dest = (Destination) context.lookup("java:comp/env/jms/JMSExampleQueue2Ref");           
             connection = factory.createConnection();         
             session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);         
             consumer = session.createConsumer(dest);
             connection.start();
             Message msg = consumer.receive(1000);
             if(msg == null){
                  System.out.println(":(");
             }else{
                  System.out.println("got it " + msg);
         catch (NamingException e) {
             mySessionCtx.setRollbackOnly();
             throw e;
         catch (JMSException e) {
             logger.log(myLevel, e.getLocalizedMessage(), e);
             mySessionCtx.setRollbackOnly();
             Exception linked = e.getLinkedException();
             mySessionCtx.setRollbackOnly();
             throw e;
         finally {          
             consumer.close();          
             session.close();         
             connection.close();
    }The weird thing is that it only happens (time-out obviously) if i
i have "XA enabled" checkbox checked (in connection factory settings)AND if i run the method presented above in JTA transaction (setting transaction type for a Ejb to container or set it to Bean and manually start JTA transaction)
If i do not have "XA enabled" checked the code above work great even inside JTA transaction.
I tried creating transacted JMS session and not transacted but as far as i know it is ignored in JTA.
Can someone explain me what is going on ??
Is it impossible to synchronous receive message in JTA transaction while working with XA connection factory??
Is it Websphere MQ problem, or sth else ??

Answer 1

Hi
I am using Websphere Application server 6.1 (the one provided with RAD 7.0.0)and WebSphere MQ 6.0 as JMS provider.
I have a problem receiving message from queue when JTA transaction is active.
I configured Connection Factory as following:
Scope cells:ejbhostname:nodes:ejb:servers:server1
Name MQQueueConnectionFactory
JNDI Name foo/bar
Description empty
Category empty
Component-managed Authentication Alias none
Container-managed Authentication Alias none
Mapping-Configuration Alias DefaultPrincipalMapping
Queue Manager QMGR
Host 192.168.2.100
Port 1415
Channel CLIENT_CHANNEL
Transport Type CLIENT
Model Queue Definition empty
Client ID empty
CCSID empty
Message Retention enabled
XA Enabled enabled.
Everything seems to work fine but message reception time-out occurs when i try to synchronous receive message from queue.
Below is a code of my stateless session EJB method.
public void receiveMessage()
    throws NamingException,
    JMSException{
          Connection connection = null;
         Session session = null;
         MessageConsumer consumer = null;
         try {
             logger.log(myLevel, "Getting Initial Context");
             InitialContext context = new InitialContext();
             ConnectionFactory factory = (ConnectionFactory) context.lookup("java:comp/env/jms/JMSExampleConnectionFactoryRef");           
             Destination dest = (Destination) context.lookup("java:comp/env/jms/JMSExampleQueue2Ref");           
             connection = factory.createConnection();         
             session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);         
             consumer = session.createConsumer(dest);
             connection.start();
             Message msg = consumer.receive(1000);
             if(msg == null){
                  System.out.println(":(");
             }else{
                  System.out.println("got it " + msg);
         catch (NamingException e) {
             mySessionCtx.setRollbackOnly();
             throw e;
         catch (JMSException e) {
             logger.log(myLevel, e.getLocalizedMessage(), e);
             mySessionCtx.setRollbackOnly();
             Exception linked = e.getLinkedException();
             mySessionCtx.setRollbackOnly();
             throw e;
         finally {          
             consumer.close();          
             session.close();         
             connection.close();
    }The weird thing is that it only happens (time-out obviously) if i
i have "XA enabled" checkbox checked (in connection factory settings)AND if i run the method presented above in JTA transaction (setting transaction type for a Ejb to container or set it to Bean and manually start JTA transaction)
If i do not have "XA enabled" checked the code above work great even inside JTA transaction.
I tried creating transacted JMS session and not transacted but as far as i know it is ignored in JTA.
Can someone explain me what is going on ??
Is it impossible to synchronous receive message in JTA transaction while working with XA connection factory??
Is it Websphere MQ problem, or sth else ??