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PostPosted: Wed Oct 31, 2001 1:05 pm Post subject: Reply with quote


Joined: 30 Oct 2001
Posts: 1

Ran into a snag. I applied FixPak4 to my WebSphere 3.5 installation and my MQSeries application no longer works correctly even though it worked fine before the upgrade.

I had version 5.1.2 of the MQSeries classes for Java and JMS when it worked fine. I had those installed after it failed to work succeeding the WAS upgrade. I have since upgraded to version 5.2 of the MQSeries classes, but this didn't help.

I can connect to my initialcontext, but now when I go to look something up, I get a ClassCastException. IBM actually had a FAQ entry on this and said to use the narrow method instead of a direct cast, my code never gets past the lookup... and based on the stack dump, I believe the error is coming internally (

My queues are all correct and setup fine as this code has worked before.

Here is a snippet of my code:

java.util.Properties props = new java.util.Properties();
props.setProperty(javax.naming.InitialContext.PROVIDER_URL, "iiop://localhost/");
javax.naming.InitialContext ic = new javax.naming.InitialContext(props);

Object o = ic.lookup("jms/Samples/QCF_NoTrans");

QueueConnectionFactory qcf = (QueueConnectionFactory)javax.rmi.PortableRemoteObject.narrow(o, QueueConnectionFactory.class);

The error will occur on the lookup. It will also occur if I lookup any object even one I freshly created.

Here is the stack dump:

Exception: Error during resolve
javax.naming.NamingException: Error during resolve. Root exception is java.lang.ClassCastException
java.lang.ClassCastException(), java.lang.String, org.omg.CORBA.Object, boolean), java.lang.String, org.omg.CORBA.Object, boolean), java.lang.String, boolean,, int, org.omg.CORBA.Object, boolean), java.lang.String, boolean,, org.omg.CORBA.Object, boolean), boolean, org.omg.CORBA.Object)
org.omg.CORBA.portable.OutputStream, java.lang.String, boolean)
org.omg.CORBA.portable.OutputStream org.omg.CORBA.portable.ObjectImpl._request(java.lang.String, boolean)
org.omg.CORBA.Object org.omg.ExtendedNaming._NamingContextBaseStub.resolve(org.omg.CosNaming.NameComponent [])
org.omg.CORBA.Object org.omg.ExtendedNaming._NamingContextStub.resolve(org.omg.CosNaming.NameComponent [])
java.lang.Object [])
java.lang.Object javax.naming.InitialContext.lookup(java.lang.String)
void com.avaya.thinclient.applet.QueueListener.InitJms(java.lang.String [])
com.avaya.thinclient.applet.QueueListener(java.lang.String [], com.avaya.thinclient.applet.ConnectionServer)
com.avaya.thinclient.applet.ConnectionServer(java.lang.String [])
void com.avaya.thinclient.applet.TheServer.main(java.lang.String [])

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