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MQSeries.net Forum Index » IBM MQ Installation/Configuration Support » mq series server on linux redhat v9

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pmstevens
PostPosted: Wed Jul 07, 2004 9:40 am    Post subject: mq series server on linux redhat v9 Reply with quote

Newbie

Joined: 12 Jan 2004
Posts: 2
Location: Johannesburg, South Africa

Hello

I've install mq sereis server on red hat linux v 9.

HOWEVER, when i attempt to create a queue manager. the crtmqm command hogs the cpu and never completes.

I've checked permissions,groups, prereqs, for the base linux problem the var has been set (as per qick start guide). It seems that the queue mgr does sort of get created as the files exist under /var/mqm/qmgrs, but the process never completes. No errors are logged.

I'm obvoisly missing something obvious.

Any ideas?

Many thanks
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Albator
PostPosted: Wed Jul 07, 2004 1:06 pm    Post subject: Reply with quote

Voyager

Joined: 04 Mar 2004
Posts: 75
Location: Toronto, Canada

I doubt if Redhat 9 is supported at this time...
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neilc
PostPosted: Wed Jul 07, 2004 3:33 pm    Post subject: mq series server on linux redhat v9 Reply with quote

Newbie

Joined: 07 Jul 2004
Posts: 1

This could be a threading issue with the new kernel. You can get around this by telling the kernel to use the old threading model. There are three options:

either
export LD_ASSUME_KERNEL=2.2.5
This will set usage of linux threads without floating stacks
or
export LD_ASSUME_KERNEL=2.4.19
This will set usage of linux threads with floating stacks
or
export AMQ_THREADMODEL_RESET=1
This internally just sets LD_ASSUME_KERNEL=2.4.19 but has the advantage that other processes on your system can run with the new posix thread model.

Personally, I have an RH9 system where I have
"export LD_ASSUME_KERNEL=2.2.5" in the .profile for the mqm user. This makes sure that it is always set when MQ starts.

Regards... Neil Casey.
Thanks to Paul Clarke from IBM for the info here. It was posted to the MQSERIES@AKH-WIEN.AC.AT list on 29 June 2004.
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Anirud
PostPosted: Wed Sep 08, 2004 10:44 am    Post subject: Reply with quote

Master

Joined: 12 Feb 2004
Posts: 285
Location: Vermont

pmstevens,
How did you endup with the MQ 5.3 installation on Redhat 9?
I am not sure if Redhat 9 is supported. Please let me know.

Thanks
Anirud.
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WLeideckDC
PostPosted: Fri Sep 10, 2004 4:04 am    Post subject: Reply with quote

Novice

Joined: 25 Aug 2004
Posts: 21
Location: Ludwigshafen, Germany

I have following variables defined:

AMQ_INHIBIT_DLCLOSE=TRUE
LD_ASSUME_KERNEL=2.2.5

after installind CSD06 creating a queuemanager doesn't hung.
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