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| bujjisveeru |
 Posted: Tue Dec 15, 2009 9:56 pm Post subject: decommission |
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Newbie
Joined: 08 Oct 2009
Posts: 3
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HI,
There are many applications are connected with my application queue manager. But in one of those application is going to decommision soon. So if it happens, all the messages which are routing to the that application will hold in Transmission Queue (TQ) and if the TQ is reached maximum depth, then the messages are routed to DLQ(Dead-Letter-Queue). So it will effect the problem to remaining application also. Here is the main thing is: we hav only one channel for all the applications. |
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| Gaya3 |
| Posted: Tue Dec 15, 2009 10:00 pm Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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it will be a problem....if the target is not going to be available..better find out a way to stop the messages going to that particualar queue.
The best option is stop the messages going to that target Q.
i believe the message will go to the Target Queue right, its not like going to stay in the Transmission Queue.
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Regards
Gayathri
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Do Something Before you Die |
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| fjb_saper |
| Posted: Tue Dec 15, 2009 10:30 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| Gaya3 wrote: |
it will be a problem....if the target is not going to be available..better find out a way to stop the messages going to that particualar queue.
The best option is stop the messages going to that target Q.
i believe the message will go to the Target Queue right, its not like going to stay in the Transmission Queue. |
To avoid the channel MCA repeatedly retrying to put the message to a full queue (no app is processing them) and slowing down communications you can try following scenario:
- put inhibit the target queue on the processing qmgr
This should let the channel MCA know to put the msg to the DLQ on the first try.
- run a DLQ handler that deletes the messages for that app until you can have them stopped at the source. This is to avoid the DLQ from just filling up.
- stop the messages at the source.
Now of course if you are just decommissioning the app and not the process , I would hope that you are replacing the app with another one. There the question arises if you can have the new app and the app to be decommissioned compete for message, for a short while. This would assure uninterrupted service...
Have fun 
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MQ & Broker admin |
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| bujjisveeru |
| Posted: Tue Dec 15, 2009 11:03 pm Post subject: |
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Newbie
Joined: 08 Oct 2009
Posts: 3
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suppose if it is in clustered environment, what to do?
tell me step-by-step |
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| Gaya3 |
| Posted: Tue Dec 15, 2009 11:24 pm Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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who is the MQ Administrator there? Please get in touch with him/her
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Regards
Gayathri
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Do Something Before you Die |
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| Vitor |
| Posted: Wed Dec 16, 2009 6:08 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| bujjisveeru wrote: |
| suppose if it is in clustered environment, what to do? |
The same thing, but in a cluster.
| bujjisveeru wrote: |
| tell me step-by-step |
Depends on your cluster topology. The advice to speak to your local WMQ admin is the best.
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Honesty is the best policy.
Insanity is the best defence. |
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| bruce2359 |
| Posted: Wed Dec 16, 2009 6:13 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| ...all the messages which are routing to the that application will hold in Transmission Queue (TQ) and if the TQ is reached maximum depth, then the messages are routed to DLQ(Dead-Letter-Queue). |
No. When the transmission queue reaches maxdepth, the next attempt to put a msg to the xmitq will result in the application getting a queue-full ReasonCode.
Part of the process to decommission an app is to modify the QRemote definition that the app MQOPENed to cause the messages to go somewhere other than the current xmit queue.
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ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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