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| Does queue manager overwrites the already set msgid? |
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| mqxplorer |
 Posted: Wed Nov 28, 2012 2:35 pm Post subject: Does queue manager overwrites the already set msgid? |
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Master
Joined: 22 Jun 2009
Posts: 206
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Hi All,
As far as I understood MQ, queue manager generates a new message ID if the application puttibng the message into the queue is not assigning a message ID to it and it does not overwrite the messageID, if the put application already sets up one in MQMD..... Is that right?
Thanks
mqxplorer |
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| fjb_saper |
| Posted: Wed Nov 28, 2012 7:06 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Depends on the settings you set. JMS always assigns a new messageId. For all other applications you can set a flag to assign a new messageId. Otherwise your observation should be right. 
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| kash3338 |
| Posted: Fri Nov 30, 2012 7:59 pm Post subject: Re: Does queue manager overwrites the already set msgid? |
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Shaman
Joined: 08 Feb 2009
Posts: 709
Location: Chennai, India
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| mqxplorer wrote: |
As far as I understood MQ, queue manager generates a new message ID if the application puttibng the message into the queue is not assigning a message ID to it and it does not overwrite the messageID, if the put application already sets up one in MQMD..... Is that right?
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MQ Infocenter says this,
| Quote: |
| For the MQPUT and MQPUT1 calls, if MQMI_NONE or MQPMO_NEW_MSG_ID is specified by the application, the queue manager generates a unique message identifier when the message is put, and places it in the message descriptor sent with the message. |
| Quote: |
| The sending application can also specify a value for the message identifier other than MQMI_NONE; this stops the queue manager generating a unique message identifier. |
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