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MQSeries.net Forum Index » General IBM MQ Support » Way too many connections from the application

Way too many connections from the application

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Sam Uppu

Posted: Tue Jul 07, 2009 10:03 am Post subject: Way too many connections from the application

Yatiri

Joined: 11 Nov 2008
Posts: 610

we are running MQ version 7.0.0.1 on solaris 10.

The java application is connected to our QMgr QM1.

When I try DIS CONN(*), I see many connections around 5000

echo "dis conn(*)" | runmqsc QM1 | grep TYPE | wc -l

The maxhandles allowed on the qmgr is 256 which is default. Not sure how the app is able to open somany connections without getting any error.

Can we some how know which application instance or which PID is generating these many open connections?.

Thanks.

mqjeff

Posted: Tue Jul 07, 2009 11:10 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

Maxhandles has nothing to do with connections.

mehedi

Posted: Tue Jul 07, 2009 1:43 pm Post subject:

Centurion

Joined: 11 Nov 2001
Posts: 102
Location: PSTech

Sam,
New in version 7.0
The "define channel" command has two new parameters
MAXINST and MAXINSTC . These can be set to limit the number of channel connections for the channel tyoe server-connection(SRVCONN).
http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/topic/com.ibm.mq.csqzaj.doc/sc11010_.htm

Mehedi

Sam Uppu

Posted: Tue Jul 07, 2009 3:10 pm Post subject:

Yatiri

Joined: 11 Nov 2008
Posts: 610

mehedi wrote:

Thanks Mehedi. We are not using the serverconn channels to connect to MQ. The application is connecting via Binding mode. The app and MQ server are on the same physical server.

Thanks.

aditya.aggarwal

Posted: Wed Jul 08, 2009 2:35 am Post subject:

Master

Joined: 13 Jan 2009
Posts: 252

Sam Uppu wrote:

Quote:

The application is connecting via Binding mode. The app and MQ server are on the same physical server.

does the application using JMS bindings?

if there is no SVRCONN channel then how are you getting the count of maxhandles by using ...

echo "dis conn(*)" | runmqsc QM1 | grep TYPE | wc -l

Mqjeff,

What is the difference b/w maxhandles and connections to qmgr?

Cheers,
Aditya

mqjeff

Posted: Wed Jul 08, 2009 2:41 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

aditya.aggarwal wrote:

What is the difference b/w maxhandles and connections to qmgr?

http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=/com.ibm.mq.csqzaj.doc/sc10620_.htm

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