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MQSeries.net Forum Index » IBM MQ Telemetry / Low Latency Messaging / Everyplace » amq9213: a communications error for tcp/ip occured

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popebb
PostPosted: Wed May 16, 2007 5:47 am    Post subject: amq9213: a communications error for tcp/ip occured Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

i am getting a message that ....

amq9213: a communications error for tcp/ip occured
action: the return code from the tcp/ip(recv) [timeout]360 seconds call was 0(x'0').

Then i get an error on my sdr chl.

amq9999: chl program ended abnormally.

Then the chl retries and gets error message

amq9558: remote chl is not currently available.

the host side, where this is pointing to states that he is in running state and i am in a retry on my server side...

after a few minutes it just comes back.


i am on a win2k server running mq 6.0.1.0
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Vitor
PostPosted: Wed May 16, 2007 5:49 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

Sounds like network / firewall issues, where the channel connections being terminated due to inactivity. Or something.
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popebb
PostPosted: Wed May 16, 2007 5:50 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

even while i am in a retry i can telnet to the conname and get connected.

I am thankful for any assistance


brian
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popebb
PostPosted: Wed May 16, 2007 5:52 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

i have been told there is now fw between us, i am having vtam and network guys check routing. we did have the chls triggered with a disconnect in set.....i have changed this to 0 so it will not disconnect just test and i am still having the chl dropping
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dhanaraj
PostPosted: Wed May 16, 2007 5:53 am    Post subject: Reply with quote

Voyager

Joined: 10 Aug 2004
Posts: 92

Please check the firewall open on Queue Manager port.

Thanks
Dhanaraj
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popebb
PostPosted: Wed May 16, 2007 5:54 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

even when i go to a retry i can telnet to the other side on the listening port so i am assuming i am not having fw issues
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Vitor
PostPosted: Wed May 16, 2007 5:54 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

popebb wrote:
i have been told there is now fw between us, i am having vtam and network guys check routing. we did have the chls triggered with a disconnect in set.....i have changed this to 0 so it will not disconnect just test and i am still having the chl dropping


If I'm correct (and if a firewall has been added it does sound likely) changing the disconnect will not help. The channel's not disconnecting, it's being disconnected by the firewall.

You're probably better off with a triggered channel, and a disconnect interval less than the firewall's inactive termination limit so it closes cleanly before it gets chopped.
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Vitor
PostPosted: Wed May 16, 2007 5:55 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

popebb wrote:
even when i go to a retry i can telnet to the other side on the listening port so i am assuming i am not having fw issues


Then it's an inactive timeout, if a new telnet session is getting through but an old channel session is getting chopped.
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popebb
PostPosted: Wed May 16, 2007 5:56 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

we had the disc int set to 6000 before and where still having the issues
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popebb
PostPosted: Wed May 16, 2007 5:59 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

i will try setting the dis in to 3000 to see
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popebb
PostPosted: Wed May 16, 2007 6:10 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

i just verified with our network person, there is now fw between us

ie not a inactivity time out
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Vitor
PostPosted: Wed May 16, 2007 6:52 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

popebb wrote:
i just verified with our network person, there is now fw between us

ie not a inactivity time out


I did mean the firewall timing the connection out rather than the channel.

Sorry if I failed to make that entirely clear.
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popebb
PostPosted: Wed May 16, 2007 8:52 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

i understood, i just wanted my chl to time out before the fw did. i did verify that there is no firewall between us so that is not the issue. i am currently running mq traces on the server as well as the host, i am trying
to get the network team to get a sniffer going. as of now the chl has not
gone down and i have passed about 9000 messages
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popebb
PostPosted: Wed May 16, 2007 10:30 am    Post subject: Reply with quote

Apprentice

Joined: 23 Aug 2006
Posts: 34

well still working, guess the network guys fix whatever they broke?????
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Vitor
PostPosted: Wed May 16, 2007 11:46 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

popebb wrote:
well still working, guess the network guys fix whatever they broke?????


It's amazing. Sometimes the network stops working, then suddenly starts again, and all without any changes to the network whatsoever. Honest.

But not one of the network admins will meet your eye.
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