Message-driven bean CMT can not be supported

Question

Hi,
I�m trying to use IBM MQSeries 5.3 with S1AS7. The AS and MQ run under W2K SP3. At first I had no problem with deploying and running samples. I used C:\Sun\AppServer7\samples\ejb\mdb\simple\
I was able to put a test message into MQSeries queue and I saw it was processed by the MDB
Then I decided to change <transaction-type> from �Bean� to �Container� and I added <assembly-descriptor> where I set <trans-attribute> as �Required�.
Here is my new ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN' 'http://java.sun.com/dtd/ejb-jar_2_0.dtd'>
<!-- Copyright 2002 Sun Microsystems, Inc. All rights reserved. -->
<ejb-jar>
<display-name>SimpleMessageJAR</display-name>
<enterprise-beans>
<message-driven>
<display-name>SimpleMessageEJB</display-name>
<ejb-name>SimpleMessageEJB</ejb-name>
<ejb-class>samples.ejb.mdb.simple.ejb.SimpleMessageBean</ejb-class>
<transaction-type>Container</transaction-type>
<message-driven-destination>
<destination-type>javax.jms.Queue</destination-type>
</message-driven-destination>
</message-driven>
</enterprise-beans>
<assembly-descriptor>
     <container-transaction>
          <method>
               <ejb-name>SimpleMessageEJB</ejb-name>
               <method-name>onMessage</method-name>
               <method-params>
                    <method-param>javax.jms.Message</method-param>
               </method-params>
          </method>
          <trans-attribute>Required</trans-attribute>
     </container-transaction>
</assembly-descriptor>
</ejb-jar>
In this case I have the following server.log
[15/Dec/2002:15:29:00] FINE ( 1700): Requesting Server Session at: 1039955340843
[15/Dec/2002:15:29:00] FINE ( 1700): Got Server Session at: 1039955340859(1039955340843)
[15/Dec/2002:15:29:00] INFO ( 1700): CORE3282: stdout: In SimpleMessageBean.SimpleMessageBean()
[15/Dec/2002:15:29:00] FINEST ( 1700): Thread[MQQueueAgent (MYASQUEUE),5,RMI Runtime]: got session: com.sun.enterprise.jms.SessionWrapperBase@3c9616 from com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0
[15/Dec/2002:15:29:00] INFO ( 1700): CORE3282: stdout: In SimpleMessageBean.setMessageDrivenContext()
[15/Dec/2002:15:29:00] INFO ( 1700): CORE3282: stdout: In SimpleMessageBean.ejbCreate()
[15/Dec/2002:15:29:00] FINEST ( 1700): start(): calling notify... com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0
[15/Dec/2002:15:29:00] FINEST ( 1700): run(): after wait ... com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0
[15/Dec/2002:15:29:00] FINEST ( 1700): Thread[Thread-28,5,RMI Runtime]: run(): calling Session.run() ... com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0
[15/Dec/2002:15:29:00] FINEST ( 1700): Thread[Thread-28,5,RMI Runtime]: message-driven bean container onMessage :
JMS Message class: jms_text
JMSType: null
JMSDeliveryMode: 1
JMSExpiration: 0
JMSPriority: 0
JMSMessageID: ID:414d5120514d5f636c6f7564202020200628fc3d2000020f
JMSTimestamp: 1039955340820
JMSCorrelationID:null
JMSDestination: null
JMSReplyTo: null
JMSRedelivered: false
JMS_IBM_PutDate:20021215
JMSXAppID:C:\WINNT\system32\mmc.exe
JMS_IBM_Format:MQSTR
JMS_IBM_PutApplType:11
JMS_IBM_MsgType:8
JMSXUserID:alex
JMS_IBM_PutTime:12290082
JMSXDeliveryCount:1
111111111111111111
[15/Dec/2002:15:29:00] FINEST ( 1700): beforeMessageDelivery() not called
[15/Dec/2002:15:29:00] INFO ( 1700): MDB00040: [mdb-simple:SimpleMessageEJB]: Message-driven bean CMT can not be supported.
[15/Dec/2002:15:29:00] SEVERE ( 1700): MDB0008: Session.run() throws Exception [Message-driven bean CMT can not be supported.]
[15/Dec/2002:15:29:00] SEVERE ( 1700): MDB0009: Session.run() throws Exception
java.lang.RuntimeException: Message-driven bean CMT can not be supported.
     at com.sun.enterprise.jms.SessionWrapperBase.run(SessionWrapperBase.java:200)
     at com.iplanet.ias.ejb.containers.IASServerSessionImpl.run(IASServerSessionImpl.java:191)
     at java.lang.Thread.run(Thread.java:536)
[15/Dec/2002:15:29:00] FINEST ( 1700): Thread[Thread-28,5,RMI Runtime]: in run(): return object com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0 to pool ...
[15/Dec/2002:15:29:00] FINEST ( 1700): run(): before wait ... com.iplanet.ias.ejb.containers.IASServerSessionImpl@3508c0
If I use internal AS JMS I don�t have any trouble. Everything works fine.
Why it is possible to use MDB CMT with internal AS JMS provider?
What should I do to create MDB CMT with IBM MQSeries?
Alexei Gladkov

Answer 1

Hi Alexei,
Sun ONE Application Server 7 does not support CMT MDBs with 3rd party JMS providers. (As you note, BMT MDBs work with MQSeries and Sun ONE App Server).
With the advent of the next J2EE CA spec version (1.5) and J2EE 1.4, a standard means of hooking JMS providers into app servers and MDBs will be made available. Shortly after J2EE 1.4 is released, you'll see this support in Sun ONE App Server.
From the J2EE 1.4 spec: "The Connector API now supports integration with asynchronous messaging systems, including the ability to plug in JMS providers."
Thanks,
Chris