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MQSeries.net Forum Index » IBM MQ Java / JMS » Questions on transaction coordination

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HenriqueS
PostPosted: Mon Dec 14, 2009 9:40 am    Post subject: Questions on transaction coordination Reply with quote

Master

Joined: 22 Sep 2006
Posts: 235
Hello, I some questions about 2-phase commit on MQ with applications under the WebSphere Application Server:

1) If my WAS is version > 6.x and my application does a JMS CLIENT lookup to MQ resources (so WAS and MQ do not sit on the same machine) I won´t need to configure the Extended Transactional Client (MQSeriesTXClient) ?

So I won´t need to refer to the MQXA* classes when opening connections factories, queue connections factories, etc.?

All the WAS-rolled back transactions will reflect both to my database as well my MQ queues, right?

2) If I have a call that relies on the MQ Base Java API (not JMS) is there a way to bind it under a 2-phase commit context controlled by WAS?

The begin()/commit()/backout() calls offered in the MQ Base Java APIs work only under single phase commit with MQ acting as the coordinator?

How to reflect changes to my database when I have an exception on the MQ calls or vice-versa? Manually under a try{}catch block according to the DB or MQ Exception that rises?
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