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| Clarification needed in MQ !!! |
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| muthukumaran |
 Posted: Sat Jun 20, 2009 8:07 pm Post subject: Clarification needed in MQ !!! |
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Novice
Joined: 12 Feb 2009
Posts: 22
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Hi,
I have a couple of doubts in MQ. Will be helpful if anybody can clarify on the questions.
1. What is the significance of the parameter "Service Interval" in Queue Definition ?
2. I have a Queue with trigger type "First" enabled. My queue will keep on getting the messages. Is it possible to retrigger(or start the trigger fresh) the same application after every 10 minutes ? And i also want all the messages to be available which were there in the previous trigger? To be precise, can i re-initiate the same Application with another trigger and with time constraint of 10 minutes.
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| sumit |
| Posted: Sun Jun 21, 2009 1:20 am Post subject: Re: Clarification needed in MQ !!! |
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Partisan
Joined: 19 Jan 2006
Posts: 398
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| muthukumaran wrote: |
| 1. What is the significance of the parameter "Service Interval" in Queue Definition ? |
http://publib.boulder.ibm.com/infocenter/wmqv7/v7r0/index.jsp?topic=/com.ibm.mq.csqzax.doc/mo10830_.htm
| muthukumaran wrote: |
| Is it possible to retrigger(or start the trigger fresh) the same application after every 10 minutes ? |
Trigger on a q works with respect to messages. q generates a trigger with first message, every message, certain no. of msgs in q, etc. How can you restrict message occurance in a q after every 10 mins?
What's your OS? You can use cron job on Unix or Services schedular on Windows to achieve the same.
| muthukumaran wrote: |
| ...i also want all the messages to be available which were there in the previous trigger? |
Then why do you need a trigger? Trigger is normally configured to start an application which can use the messages in a q.
Can you elaborate on your exact requirement?
_________________
Regards
Sumit |
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| Vitor |
| Posted: Sun Jun 21, 2009 1:23 am Post subject: Re: Clarification needed in MQ !!! |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| muthukumaran wrote: |
| 1. What is the significance of the parameter "Service Interval" in Queue Definition ? |
If the queue manager doesn't have performance events enabled it has no significance at all! If it is enables, the value is part of the sampling mechanism used to generate them. There's a wealth of documentation on it which I don't intended to repeat here; I'll simply say that, like all events these should be used with some caution and are best used only to solve a specific issue (e.g. enabling security events to resolve a security problem, enabling performance events to resolve a performance problem, etc)
| muthukumaran wrote: |
| 2. I have a Queue with trigger type "First" enabled. My queue will keep on getting the messages. Is it possible to retrigger(or start the trigger fresh) the same application after every 10 minutes ? And i also want all the messages to be available which were there in the previous trigger? To be precise, can i re-initiate the same Application with another trigger and with time constraint of 10 minutes. |
Triggering is message rather than time driven. You might be able to do something but it will be much easier to use cron or similar to just kick off your application every 10 minutes.
Why would you want the same messages as in the previous triggered job? Why would you want them processed again and again? Do not use a queue as a database (it sounds like your application is reading configuration messages on start up, I could be wrong) but store this information elsewhere.
As to the messages remaining for the next iteration of your application, that's a question for your application not WMQ. You're processing them, you decide if you're removing them. 
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| zpat |
| Posted: Sun Jun 21, 2009 3:00 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| Look at QMGR Triggerinterval - useful for re-triggering applications that have not run successfully. |
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