Can you change the MF process to send the reply with COD?  Also, what
version of MQSeries are you running?  

-----Original Message-----
From: MQSeries List [mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Thursday, June 07, 2007 8:34 AM
To: [email protected]
Subject: Help Needed

Let me describe our dilema and if anyone has any suggestions on how we
can troubleshoot this, it would be greatly appreciated.

We have a mainframe application that receives messages from a server
based application on a queue.  The mainframe processes the message and
puts a response on a queue (it gets this from the reply to queue/manager
from the initial message).  The application that reads the response is a
biztalk application and does a mqget every second to see if messages are
waiting (I know thats alot of overhead, but until we can re-architect it
I am stuck with it).

The problem is that we are intermittently losing messages.  The
mainframe confirms that they are putting the response on the queue, and
the biztalk application does not appear to be seeing it.  We put a
network sniffer and we actually do see the mq message coming over the
network.  We compared that message to one that was properly received and
nothing jumps out at us.
In a normal situation, as  soon as a message is picked off the queue it
writes to a SQL database with tracking info.  The "lost" transactions
are not appearing on the database.


Now the questions:

Is there any way to turn on any MQ logging so we can see that the
message is actually being picked off the queue?
The queues are setup as persistent.  Is there anyway to interpret what
is in the log/active folder to see what is going on?
Can the MQ trace facility be used to help us?
Any other ideas would be greatly appreciated.

In parallel, the developers are looking at the code to see if there is a
flaw.  (maybe 2 messages arriving at the same time - it processes 1 and
drops the next?).


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