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| vutkuri |
 Posted: Sat Nov 10, 2007 3:50 pm Post subject: channel sequance number issue |
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Apprentice
Joined: 19 Feb 2007
Posts: 35
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I am MQ v6 on Solaris, In our environment I have connected to 50 customers with MQ channels, but I am getting frequent channel sequance number issue with only one channel. My reciever end is ging to reset to 1 all of suudden, when remote side reset to 1 in his sender channel agian it's working fine.
At this point of time I am really confusing about this, please can you help me out.
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| bruce2359 |
| Posted: Sat Nov 10, 2007 4:01 pm Post subject: |
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Guest
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| Quote: |
| My reciever end is going to reset to 1 |
I've seen this when the RCVR channel is deleted and redefined. Next time this happens, display the receiver channel creation date. |
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| vutkuri |
| Posted: Sat Nov 10, 2007 4:13 pm Post subject: |
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Apprentice
Joined: 19 Feb 2007
Posts: 35
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We haven't touched the reciever channel for past 2 years and this problem has been happening for past 1 month.
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| fjb_saper |
| Posted: Sat Nov 10, 2007 5:14 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| vutkuri wrote: |
We haven't touched the reciever channel for past 2 years and this problem has been happening for past 1 month.
Thanks |
Are you sure you don't have a rogue qmgr using and resetting this channel ?
Ex:
channel A.TO.B is used to communicate between qmgrs A and B.
qmgr C (rogue) comes along and defines A.TO.B. It resets it and starts the channel.
Now what happens when A tries to start the channel??? 
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MQ & Broker admin |
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| bruce2359 |
| Posted: Sat Nov 10, 2007 5:30 pm Post subject: |
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Guest
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| vutkuri |
| Posted: Sun Nov 11, 2007 7:33 pm Post subject: |
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Apprentice
Joined: 19 Feb 2007
Posts: 35
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CHAD was disabled and I checked with remote side and they are not using any other sender channe to my reciever channel.
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| JosephGramig |
| Posted: Mon Nov 12, 2007 5:15 am Post subject: |
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Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
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Hmmm, that is odd. Are you at V6.0.2.2?
_________________
Joseph
Administrator - IBM WebSphere MQ (WMQ) V6.0, IBM WebSphere Message Broker (WMB) V6.1 & V6.0
Solution Designer - WMQ V6.0
Solution Developer - WMB V6.1 & V6.0, WMQ V5.3 |
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| jefflowrey |
| Posted: Mon Nov 12, 2007 5:26 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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It may not be the remote side that is interfering with this channel. It may be some other qmgr on your local side.
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I am *not* the model of the modern major general. |
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| PeterPotkay |
| Posted: Mon Nov 12, 2007 9:50 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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or something as simple as someone on your side who doesn't know what they are doing (or maybe they do!) issuing a reset of the RCVR channel.
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Peter Potkay
Keep Calm and MQ On |
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| vutkuri |
| Posted: Mon Nov 12, 2007 2:29 pm Post subject: |
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Apprentice
Joined: 19 Feb 2007
Posts: 35
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| I am using MQ V6.02.1 and that server is in production, nobody has got access to that server |
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| fjb_saper |
| Posted: Mon Nov 12, 2007 6:35 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| vutkuri wrote: |
| I am using MQ V6.02.1 and that server is in production, nobody has got access to that server |
Really? Are all channels protected through public key encryption?
Are all the connecting qmgrs protected the same way?
Are all qmgrs in the production MQ network protected the same way??
Is the command server shutdown? How is the qmgr monitored? (note that most monitoring software will run the command server)
All it takes is a pcf message...
Ask Roger... 
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| RogerLacroix |
| Posted: Tue Nov 13, 2007 1:46 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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| fjb_saper wrote: |
| Ask Roger... |
 
Yup, there are many, many ways to drive an MQ Admin crazy!! (Backdoor security issues!!)
Regards,
Roger Lacroix
_________________
Capitalware: Transforming tomorrow into today.
Connected to MQ!
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| Vitor |
| Posted: Tue Nov 13, 2007 2:05 pm Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| RogerLacroix wrote: |
| Yup, there are many, many ways to drive an MQ Admin crazy!! |
And many, many ways to make them regret it!!!! 
6 pack of Red Bull and a good, evidence-free witch hunt works quite well. Typically the guilty party is turned in by his peers to make it stop! 
(And even if not, it's a lot of fun. An excuse for caffine consumption in the office, which I'm not usually allowed).
But on a serious note, no server can be fully protected, not even a production one. Especially from someone with knowledge of the system.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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