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| elvis_gn |
 Posted: Tue Mar 22, 2005 6:16 am Post subject: Triggering |
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Padawan
Joined: 08 Oct 2004
Posts: 1905
Location: Dubai
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Hi,
I am using a trigger monitor on a queue.....the messages on the queue are persistent and the initiation queue is not persistent.....
The trigger is working and the threads are being stored in the initiation queue.
My program to be triggered browses the queue and removes messages based on conditions....
The problem i'm facing is everytime the program is run, threads equal to the number of messages on the queue are created on the initiation queue.
Can some one tell me when this scenario can arise......
I think something to do with my browse and get options.
int openOptions =MQC.MQOO_INQUIRE| MQC.MQOO_OUTPUT| MQC.MQOO_SET_IDENTITY_CONTEXT| MQC.MQOO_INPUT_SHARED| MQC.MQOO_BROWSE;
gmo.options = MQC.MQGMO_BROWSE_FIRST;
gmo.options = MQC.MQGMO_BROWSE_NEXT;
gmo.waitInterval = MQC.MQWI_UNLIMITED; |
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| jefflowrey |
| Posted: Tue Mar 22, 2005 6:22 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You are using the word "thread" in a way that makes no sense. Please clarify.
If you're concerned about the Open Input Count of the initiation queue, then your issue is with the TRIGGER MONITOR not your application. And you shouldn't be concerned with the Trigger Monitor, unless you wrote it yourself, which you shouldn't have.
If you're concerned about the Open Input Count of the application queue, then the issue has nothing to do with your GET options.
Have you considered getting training on WebSphere MQ?
_________________
I am *not* the model of the modern major general. |
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| Nigelg |
| Posted: Tue Mar 22, 2005 6:25 am Post subject: |
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Grand Master
Joined: 02 Aug 2004
Posts: 1046
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| The get options do not include a destructive get, that is, you are only browsing msgs on the triggered queue. When your app ends and closes the queue, anotther trigger msg will be written to the init q - see trigger condition 12. |
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| jefflowrey |
| Posted: Tue Mar 22, 2005 6:40 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Nigelg wrote: |
| The get options do not include a destructive get, that is, you are only browsing msgs on the triggered queue. When your app ends and closes the queue, anotther trigger msg will be written to the init q - see trigger condition 12. |
Unless he's set the TrigType to DEPTH or EVERY.
_________________
I am *not* the model of the modern major general. |
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| elvis_gn |
| Posted: Tue Mar 22, 2005 6:42 am Post subject: |
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Padawan
Joined: 08 Oct 2004
Posts: 1905
Location: Dubai
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i am using the trigger monitor from the services.....
I am not supposed to do a destructive get always.
I have to browse through the messages on the triggered queue and if there are multiple copies of a message then delete them.....
This is working with the optons i have currently.....
The problem is when all the messages are unique,i just browse through them and close the java application which has been triggered.
For the browse itself,for the number of messages browsed,an equal number is being put into the init queue...... |
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| elvis_gn |
| Posted: Tue Mar 22, 2005 6:45 am Post subject: |
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Padawan
Joined: 08 Oct 2004
Posts: 1905
Location: Dubai
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| jefflowrey |
| Posted: Tue Mar 22, 2005 6:48 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You are trying to filter messages in place using BROWSE.
As you are discovering, this is not the best way to do it.
Particularly when you involve triggering.
The better way to do it is use another queue and do a destructive GET and PUT unique messages to the end queue.
Please review your triggering setup, and the documentation on how triggering works. This will tell you WHY your system is working the way it is.
You will then be able to figure out on your own how to solve this problem - and again, a much better way is to use another queue and a real filter pattern instead of trying to filter in place.
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I am *not* the model of the modern major general. |
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| kman |
| Posted: Thu Mar 24, 2005 11:03 pm Post subject: |
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Partisan
Joined: 21 Jan 2003
Posts: 309
Location: Kuala Lumpur, Malaysia
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| Quote: |
| if there are multiple copies of a message then delete them..... |
What's this? Duplicate messages? Aren't WMQ suppose to be assuring delivery - once and once only? Why duplicate messages? |
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