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Re: [xmlblaster] Multi-phase commits and multi-phase queries

To: xmlblaster at server.xmlBlaster.org
Subject: Re: [xmlblaster] Multi-phase commits and multi-phase queries
From: Marcel Ruff <mr at marcelruff.info>
Date: Mon, 18 Oct 2004 23:43:21 +0200
In-reply-to: <200410180421.56239.dlynes at cwazy.co.uk>
References: <200410180421.56239.dlynes at cwazy.co.uk>
Reply-to: xmlblaster at server.xmlBlaster.org
Sender: owner-xmlblaster at server.xmlBlaster.org
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Daniel Lynes wrote:

I forgot to ask this question, also. Is it possible to have one query result back from xmlBlaster that is the culmination of the result sets from queries from two or more database servers?


No, only if the underlying DB's support it.

Also, in the other direction, is it possible to have one update operation that is performed as a distributed transaction across two or more database servers?


No, there is currenlty no such XA transaction manager.

Thanks for any information you might have on this.
I get the feeling if I want to be able to do anything like this, I'll need to write a plugin, or modify the server code.


You are welcome, we should probably plan such an effort to be
XA conforming to be orchestrated by a transaction manager.

regards,

Marcel

--
http://www.xmlBlaster.org

References:
- [xmlblaster] Multi-phase commits and multi-phase queries
  - From: Daniel Lynes <dlynes at cwazy.co.uk>

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