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| Difference between The JMS transaction Local vs XA |
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| hellozen123 |
 Posted: Tue Jul 05, 2016 9:00 pm Post subject: Difference between The JMS transaction Local vs XA |
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Novice
Joined: 09 May 2016
Posts: 11
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Hello,
Can anyone please highlight the difference between using Local vs XA transaction for JMS. We have message flow that access JMS queue provided by Tibco EMS via JMS Input node . IIB 10 info centre provides details of local vs XA for MQ in details only.
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| mqjeff |
| Posted: Wed Jul 06, 2016 3:48 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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One uses local transactions.
One uses XA transactions.
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| hellozen123 |
| Posted: Thu Jul 07, 2016 3:48 pm Post subject: |
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Novice
Joined: 09 May 2016
Posts: 11
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Thanks mqjeff,
I just wanted to understand what difference will it make using either of these transactions styles, in the following scenario:
External JMS Provider -->JMSInput Node --> Compute Node (DB write) --> MQOutput Node (all nodes in single transaction).
In the case of error, while writing a message to the MQ queue, DB record will be rolled back and the message will not be consumed from the JMS queue. If this behaviour is same for both local and XA transaction mode, then what is the difference? |
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| mqjeff |
| Posted: Fri Jul 08, 2016 3:52 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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an XA transaction is more reliable, in that it has a system acting as a resource controller, and ensures that all work happens in a global transaction.
A local transaction is handled by the Broker. In cases where the Broker or EG fails, the transaction might not be handled correctly.
It's a reasonably to significantly more complicated procedure to configure XA.
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