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| IMS Bridge tansaction |
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| vinbud117 |
 Posted: Mon Apr 10, 2006 6:45 am Post subject: IMS Bridge tansaction |
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Acolyte
Joined: 22 Jul 2005
Posts: 61
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the IMS bridge triggers 3 different transactions. All the three transactions come to the queue at the same time. The desired output is FIFO. But what is happening is that the IMS bridge triggers the transactions parallely and hence we end up loosing the order of the messages.
Is there any way in which we get the bridge to trigger the transactions in an order? I m8 be wrong with certain terminologies.. new to IMS bridge  ... |
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| DryHeatDave |
| Posted: Mon Apr 10, 2006 9:11 am Post subject: |
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Apprentice
Joined: 21 Mar 2006
Posts: 28
Location: Phoenix, AZ
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What about just triggering 1 trans & then trans switching within IMS ?
_________________
SCJP2
IBM Cert. Solutions Designer for Websphere MQ 5.3
Not a certified mainframer - just been doing it a real long time. |
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| vinbud117 |
| Posted: Mon Apr 10, 2006 7:21 pm Post subject: |
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Acolyte
Joined: 22 Jul 2005
Posts: 61
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| can be a little more descriptive..... how do we switch the transactions |
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| DryHeatDave |
| Posted: Tue Apr 11, 2006 12:06 pm Post subject: |
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Apprentice
Joined: 21 Mar 2006
Posts: 28
Location: Phoenix, AZ
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Without getting too deep into IMS/DC, a transaction can ISRT to an ALTPCB. The ISRT would cause the second transaction to start. It, in turn can INSRT to an ALTPCB, causing transaction 3 to start. Then the reverse can happen, to return control to trans 2 & then trans 1.
It's been a while - so excuse me if I get a little hazy. But IIRC - you can either you allow each trans to keep running and keep reading it's message queue, waiting for a response from the downstream trans, or you end each transaction, then it starts again, when the downstream transaction does an ISRT to the ALTPCB (so an ISRT to it's ALTPCB by trans 3 would restart trans 2 & trans 2 would do an ISRT to its ALTPCB to restart trans 1).
Of course, if you stop any transaction, you have to preserve it's state (data) by passing it to the next transaction, or by writing to a scratch database.
_________________
SCJP2
IBM Cert. Solutions Designer for Websphere MQ 5.3
Not a certified mainframer - just been doing it a real long time. |
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