JMS , MQSeries and WebSphere

[purushottam joshi]

Hi
I am working with JMS , MQSeries on Websphere.I am working with the migration of an application developed on Weblogic
to Websphere.I am facing a problem in which folowing exception
thrown while sending a message to a queue .The exception is as follows :
avax.jms.MessageNotWriteableException: MQJMS0008: JMS Client attempts to write a read-only message
at javax.jms.JMSException.<init>(JMSException.java:50)
at javax.jms.MessageNotWriteableException.<init>(MessageNotWriteableException.java:33)
at com.ibm.jms.JMSMessage.newMessageNotWriteableException(JMSMessage.java:2513)
at com.ibm.jms.JMSObjectMessage.setObject(JMSObjectMessage.java:257)
at SIDataMining.run(SIDataMining.java:99)
at java.lang.Thread.run(Thread.java:481)
I don't know what does it mean by read only messages.
If anybody knows the solution to the problme please reply
me as soon as possible.I'll appreciate.
Thanks
Purushottam

[Dave Bautis]

you must change the parameter
on the message creation to write
it is currently read

[Sameer Bhardwaj]

Hi Purushottam,
can u please throw some light on how are you using the JMS with mq series. When i run the JMSAdmin tool it throws the following error
5648-C60 (c) Copyright IBM Corp. 1999. All Rights Reserved.
Starting MQSeries classes for Java(tm) Message Service Administration
Exception in thread "main" java.lang.NoClassDefFoundError: com/ibm/rmi/iiop/ORB
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.omg.CORBA.ORB.create_impl(Unknown Source)
at org.omg.CORBA.ORB.init(Unknown Source)
at com.ibm.CORBA.iiop.GlobalORBFactory.init(GlobalORBFactory.java:42)
at com.ibm.ejs.oa.EJSORBImpl.initializeORB(EJSORBImpl.java:196)
at com.ibm.ejs.oa.EJSClientORBImpl.<init>(EJSClientORBImpl.java:93)
at com.ibm.ejs.oa.EJSClientORBImpl.<init>(EJSClientORBImpl.java:65)
at com.ibm.ejs.oa.EJSClientORBImpl.<init>(EJSClientORBImpl.java:47)
at com.ibm.ejs.oa.EJSORB.init(EJSORB.java:343)
at com.ibm.ejs.ns.jndi.CNInitialContextFactory.initORB(CNInitialContextFactory.java:355)
please let me know
Sameer

Originally posted by purushottam joshi:
Hi
I am working with JMS , MQSeries on Websphere.I am working with the migration of an application developed on Weblogic
to Websphere.I am facing a problem in which folowing exception
thrown while sending a message to a queue .The exception is as follows :
avax.jms.MessageNotWriteableException: MQJMS0008: JMS Client attempts to write a read-only message
at javax.jms.JMSException.<init>(JMSException.java:50)
at javax.jms.MessageNotWriteableException.<init>(MessageNotWriteableException.java:33)
at com.ibm.jms.JMSMessage.newMessageNotWriteableException(JMSMessage.java:2513)
at com.ibm.jms.JMSObjectMessage.setObject(JMSObjectMessage.java:257)
at SIDataMining.run(SIDataMining.java:99)
at java.lang.Thread.run(Thread.java:481)
I don't know what does it mean by read only messages.
If anybody knows the solution to the problme please reply
me as soon as possible.I'll appreciate.
Thanks
Purushottam

[Manzoor M]

Hi Purushottam,
I would like to know the architecture on integrating JMS, MQ Series and WebSphere App. Server and how you are currently doing it.
Could you pls. reply me.
Thanks,
Manzoor
[e-mail]

[lzhang5]

The architect of JMS, MQ and Websphere is:
MQ JMS is a JMS Java wrap on the MQ.
You can use MQ JMS to send and receive message under JMS model. JMS is also a way of communication between different Web apps.
You should use a servlet or a Message Bean (Only in EJB 2.0) to implement the onMessage() method to do that.
Lance

[pavankumark kumar]

Purushottam,
u will get that problem when u create a StreamMessage and try message.writeString("blah bla"); in a loop..This is one of the conditions but not all..U need to use message=createStreamMessage() also in loop..But a textMessage can be done in a loop with message.setText("blah");..it sends as many messages as u loop..but not with stream messages...MQAuthors should clarify this behavior