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<p class="MsoNormal">Roy,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As far as I can recall, XA_END is something that happens prior to preparing and committing the distributed connection. The sequence is basically:<o:p></o:p></p>
<p class="MsoNormal"> XA_START<o:p></o:p></p>
<p class="MsoNormal"> XA_END<o:p></o:p></p>
<p class="MsoNormal"> XA_PREPARE<o:p></o:p></p>
<p class="MsoNormal"> XA_COMMIT<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">XA_END is issued when the XA Transaction Manager calls javax.transaction.xa.XAResource.end() – not that it will help you much. Our JdbcXAConn class implements the XAConnection and XAResource interfaces and is controlled by a JDBC connection
pool manager and XA Transaction Manager. What actions drive those resources is a bit of a mystery to me.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Gordy<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Karl and Betty Schendel [mailto:schendel@kbcomputer.com]
<br>
<b>Sent:</b> Thursday, December 21, 2017 9:21 AM<br>
<b>To:</b> Gordon Thorpe <Gordon.Thorpe@actian.com><br>
<b>Subject:</b> Fwd: [Info-ingres] What does XA_END mean in the SC930 log?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Gordy,<br>
don't know if you still see info-ingres questions...<br>
I can sort of answer the first one, but XA in general is a black box to me.<br>
<br>
Karl<br>
<br>
<br>
> Begin forwarded message:<br>
> <br>
> From: Roy Hann <<a href="mailto:specially@processed.almost.meat">specially@processed.almost.meat</a>><br>
> Subject: [Info-ingres] What does XA_END mean in the SC930 log?<br>
> Date: December 21, 2017 at 11:54:33 AM EST<br>
> To: <a href="mailto:info-ingres@lists.planetingres.org">info-ingres@lists.planetingres.org</a><br>
> <br>
> When I see an XA_END in the trace log, what will have happened to cause<br>
> that? Is there a JDBC XAconnection method to explicitly signal the end<br>
> of the transaction or is it (somehow) implicit?<br>
> <br>
> If there was a transaction open but there was no preceding XA_COMM is<br>
> the transaction implicitly committed or rolled back? (I guess it is<br>
> committed.)<br>
> <br>
> Is whatever it is that causes an XA_END to be logged a legitimate<br>
> alternative to explicitly executing the commit method on the session<br>
> object (within a 2PC coordinator)?<br>
> <br>
> Roy<br>
> <br>
> <br>
> _______________________________________________<br>
> Info-ingres mailing list<br>
> <a href="mailto:Info-ingres@lists.planetingres.org">Info-ingres@lists.planetingres.org</a><br>
> <a href="http://lists.planetingres.org/mailman/listinfo/info-ingres">
http://lists.planetingres.org/mailman/listinfo/info-ingres</a><o:p></o:p></p>
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