Does anyone know how WMQ will 'wake up' the application?
| "Thomas Dunlap"
<[EMAIL PROTECTED]>
Sent by: "MQSeries List" <[EMAIL PROTECTED]> 11/05/2003 06:00 AM
|
To: [EMAIL PROTECTED] cc: Subject: Re: can two processes both get the same message |
Randy,
Not to worry. When multiple applications are using MQGET with
MQGMO_WAIT, only one will wake up as a message
arrives into the queue. The other will wait for the next message. A
single message will not wake up multiple applications.
Yes, you do want to use MQOO_INPUT_SHARED and perform the MQGET with
MQGMO_SYNCPOINT. The
latter option also ensures that no 2 applications will retrieve the same
message, plus allows you to roll back (MQBACK)
should a problem arise.
Randy J Clark wrote:
>I want to have mulitple instances of the same long running process
>executing.
>
>I want them NOT to retrieve the same messages - period.
>
>For instance if only messages arrives on the queue and I have two processes
>reading it both waiting for a message will they both retrieve the same
>message or will one get the message and the other gets nothing.
>
>What open options do I use
>MQOO_INPUT_SHARED
>
>The just GET with the GMO-SYNCPOINT
>
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--
Regards,
Thomas Dunlap Chief Technology Officer [EMAIL PROTECTED]
Themis, Inc. http://www.themisinc.com 1 (800) 756-3000
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