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MQSeries.net Forum Index » IBM MQ API Support » Channel going down between client and server?

Channel going down between client and server?

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javierDiaz

Posted: Tue Mar 05, 2002 6:39 am Post subject:

Novice

Joined: 04 Mar 2002
Posts: 13
Location: Ireland

Hi everyone,

I have a MQSeries client that connects to a MQSeries server using a server connection channel and the MQSERVER env variable. The client then keeps looping forever trying to get messages from a particular queue on the server. Is it possible that this connection went down if no messages are retrieved from the queue from a long period of time? I remember something similar happening with a channel between 2 servers when no activity was detected on the channel for a certain period of time.

Many thanks in advance,

Javi Diaz

PeterPotkay

Posted: Tue Mar 05, 2002 9:45 am Post subject:

Poobah

Joined: 15 May 2001
Posts: 7717

A SVRCONN channel will not disconnect you just because you have not had a message come across for a while. A network hiccup or a the queue manager/server having a problem could disconnected.

Regular channels have something called a disconnect interval, where you can specify a length of time after which the channel goes to sleep if no messages have come across.

Have you considered do a single get with a long wait period speciied instead of constantly looping to do gets over and over? If you specify Fail-if-Quiescing on the GET this will allow you to shutdown the QM if you need to. Just code your app to gracefully end if the get fails with a queue manager quiescing error.

_________________
Peter Potkay
Keep Calm and MQ On

javierDiaz

Posted: Wed Mar 06, 2002 5:37 am Post subject:

Novice

Joined: 04 Mar 2002
Posts: 13
Location: Ireland

Thanks Peter,

Following your suggestion, we are trying to find out any possible network/mqseries problem that could have caused this. We are also seriously considering the 'single get' option rather than the constant loop we are using at the moment. Thanks a lot again for your comments.

Regards,

Javi

_________________
Software Engineer
Kainos Software Ltd.

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