| |
|
RSS Feed - WebSphere MQ Support
|
RSS Feed - Message Broker Support
|
  |
|
| too many amqrmppa processes hang the QMGR, any solve |
« View previous topic :: View next topic » |
| Author |
Message
|
| wilsonho3 |
 Posted: Wed Dec 26, 2007 8:03 pm Post subject: too many amqrmppa processes hang the QMGR, any solve |
 |
|
Voyager
Joined: 20 Nov 2001
Posts: 98
Location: Hong Kong
|
hi,
I have a MQ Server (HP) running MQ v6. I find sometime there are a lot
of amqrmppa processes running on that server and make the QMGR hang,
is it a MQ loop or any fix can solve, what is the root cause of it and how to
solve this problem
wilson |
|
| Back to top |
|
 |
| atheek |
| Posted: Wed Dec 26, 2007 11:39 pm Post subject: |
|
|
Partisan
Joined: 01 Jun 2006
Posts: 327
Location: Sydney
|
amqrmppa is the channel pooling process.Each channel with MCATYPE set to THREAD will run as a thread of the amqrmppa process. There is a limit to the maximum number of threads that can run within an amqrmppa process. If the limit is exceeded then a new amqrmppa process will be spawned. I think for HP Unix, the limit is 30 where as for other platforms its 64 threads per process. So too many amqrmppa processes means too many channels running.
So to start off your investigation , do a dis chs(*) and find out why this many channels are running |
|
| Back to top |
|
|
| Gaya3 |
| Posted: Thu Dec 27, 2007 1:51 am Post subject: |
|
|
Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
|
Hi
Please check the Kernel Parameters too. it will give you more idea.
Too many process,  which cross the max limit will cause queue manager to hang.
Regards
Gayathri
_________________
Regards
Gayathri
-----------------------------------------------
Do Something Before you Die |
|
| Back to top |
|
|
| JasonE |
| Posted: Wed Jan 02, 2008 2:10 am Post subject: |
|
|
Grand Master
Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
|
Usually this is caused by (threaded, or java, or shared hconn) client applications connecting and failing to disconnect so I'd start any research there.
Its certainly possible to prevent this from occurring, but that would cause other failures (eg valid channels failing to launch) and it would be more sensible to identify the cause! |
|
| Back to top |
|
|
|
|
|
| |
|
Page 1 of 1 |
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
|
|
