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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Just a guess, but it looks like you are trying to get a transaction
lock on a mysql table, so does the mysql table you are using have a storage
engine that supports transactions (eg. InnoDB)?<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jonathan<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
zope-bounces@zope.org [mailto:zope-bounces@zope.org] <b>On Behalf Of </b>iarly
selbir | ski0s<br>
<b>Sent:</b> February-24-10 8:12 AM<br>
<b>To:</b> zope@zope.org<br>
<b>Subject:</b> [Zope] unable to acquire commit lock<o:p></o:p></span></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>few days ago my I'm&nbsp;getting&nbsp;this errors when
trying logging on /manage, googling I don't found any reasonable solution
and/or &nbsp;information about, only thing was, &quot;restarting zope instances
works&quot;, thats true<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>Traceback:<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>2010-02-24T09:43:09 ERROR Zope.SiteErrorLog <a
href="http://www.mywebsite.com/login_form">http://www.mywebsite.com/login_form</a><o:p></o:p></p>

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<p class=MsoNormal>Traceback (innermost last):<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module ZPublisher.Publish, line 125, in publish<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module Zope2.App.startup, line 238, in commit<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module transaction._manager, line 96, in commit<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module transaction._transaction, line 395, in
commit<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module transaction._transaction, line 498, in
_commitResources<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module ZODB.Connection, line 726, in tpc_vote<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module relstorage.relstorage, line 711, in
tpc_vote<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module relstorage.relstorage, line 686, in _vote<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module relstorage.relstorage, line 593, in
_prepare_tid<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module relstorage.adapters.mysql, line 506, in
start_commit<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;&nbsp;Module relstorage.adapters.mysql, line 672, in
_hold_commit_lock<o:p></o:p></p>

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<p class=MsoNormal>StorageError: Unable to acquire commit lock<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>I looked at the code and this function _hold_commit_lock has
the following SELECT statement:<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>SELECT GET_LOCK(CONCAT(DATABASE(), '.commit'), %s)<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>I tried to reproduce it&nbsp;querying manually
but&nbsp;&nbsp;it looks like an unknown command, and other point, I don't know
what Zope put in %s variable.<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>Does anybody already had this problem?<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal>Thanks for any reply.<o:p></o:p></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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<p class=MsoNormal><br>
Regards,<br>
<br>
- -<br>
iarlyy selbir | ski0s<br>
<br>
:wq!<o:p></o:p></p>

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