Are these JAVA JMS apps? Are they doing DB work?? If you do not disconnect from the DB and MQ in the correct order the disconnect from MQ does not complete. So you could be accumulating your open connections to the point that you run out. Do a dis chs and see how many outstanding connections you have as the apps are running. See if they are growing. Maybe and probably your apps have a coding error and are not init-ing something in the connection loop.
bobbee
From: Faizel Sedick <[EMAIL PROTECTED]> Reply-To: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: MQ connect errors Date: Fri, 23 Jan 2004 17:01:14 +0200
What I meant was that the actual app does not return MQ error codes. It only states that the operation as a whole failed. When I try to recreate the behaviour of the app using C code I get and error when doing similtaneous MQCONN calls. ie I run 50 instances of an app so there is potentialy 50 client connect calls which seems to generate the 2059 error. Strange.
I have advised the application team not to do the continuous connect/disconnect, but to stay connected as they do constantly write to queues. That will fix their problem, but I am still can't accept this behavour.
Cheers Faizel
-----Original Message----- From: Wyatt, T. Rob [mailto:[EMAIL PROTECTED] Sent: Friday, 23 January 2004 15:56 To: [EMAIL PROTECTED] Subject: Re: MQ connect errors
Hi there,
If your application does not use native MQI calls, then what is it? All of the Java-based APIs supplied by IBM provide access to the MQ Reason and Completion codes. I would think that the VB API would as well but I don't use it and don't know.
Have you turned on all your event types? Sometimes this can be quite helpful in discovering exactly what call failed and on which object.
Is that log entry from the host or the client?
-- T.Rob
-----Original Message----- From: Faizel Sedick [mailto:[EMAIL PROTECTED] Sent: Friday, January 23, 2004 4:07 AM To: [EMAIL PROTECTED] Subject: MQ connect errors
I am trying to simulate a problem we currently have in production. This is what happens in production:
A client application on Windows starts 10 instances of itself, connects to the same QM and the same queue at the same time. It then puts a message and disconnects. Some of the instances fail with a create object error. Its not native MQI calls and does not return MQ error codes. I asume that the create object error is either the creation of the queue or queue manager object, so it either fails on MQOPEN or MQCONNECT call.
I tried to simulate this by running 20 apps that write 1000 messages to the same queue. First I create the loop around the MQOPEN/PUT/CLOSE calls. ie the app stays connected to the queue manager and then opens, puts and closes the 1000 times. This finished with no errors. Then I put the loop around MQCONN/OPEN/PUT/CLOSE/DISC and a few of them failed with 2059 errors.
The error logs just give the ususal "AMQ9202: Remote host 'w31873079 (10.36.137.79) (1414)' not available" error. There is nothing in any other error logs or FDC files created.
Can anyone explain this. Does the listener just fail to start up connections?
---------------------------------------------------------------------------- Faizel Sedick
Woolworths Integration IBM MQSeries Certified Specialist, Developer & Solutions Expert Email: [EMAIL PROTECTED] Phone: +27 21 407 2452 Cell: +27 83 251 9361
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