Uncommitted DB writes (transaction from DatabaseBase::query (DatabaseBase::query))
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Description

In my wiki http://withoutvowels.org the following message is repeated in Apache2 log:

PHP Notice: Uncommitted DB writes (transaction from DatabaseBase::query (DatabaseBase::query)). in /var/www/withoutvowels/web/w/includes/db/Database.php on line 4266

VictorPorton updated the task description. (Show Details)
VictorPorton raised the priority of this task from to Needs Triage.
VictorPorton added a subscriber: VictorPorton.
Aklapper renamed this task from Uncommitted DB writes to Uncommitted DB writes (transaction from DatabaseBase::query (DatabaseBase::query)).Jan 3 2015, 9:01 PM
Aklapper set Security to None.

Since when does this happen? Is this a fresh installation? Has this been an upgrade? Which MediaWiki version is this about?
Please see https://www.mediawiki.org/wiki/How_to_report_a_bug

I don't know since when does this happen. I suspect that the error is since installation of MediaWiki 1.24.1. This site exists a few years and was upgraded a few times.

Please enable error reporting and also set $wgShowExceptionDetails = true;

I've added to LocalSettings.php:

error_reporting( -1 );
ini_set( 'display_errors', 1 );
$wgShowExceptionDetails = true;

This does not alter error messages which I see in Apache2 log:

PHP Notice: Uncommitted DB writes (transaction from DatabaseBase::query (DatabaseBase::query)). in /var/www/withoutvowels/web/w/includes/db/Database.php on line 4266

Krinkle added a subscriber: Krinkle.Jan 4 2015, 2:11 PM

Notices aren't exceptions and as such PHP doesn't provide stack traces (unless you install something like XDebug).

However, if you set up a debug log file in LocalSettings.php, notices will be logged there (including exceptions) as of MediaWiki 1.25alpha.

I tired it in my MediaWiki 1.24.1. There are no notices in debug file.

If it is really needed, I may create a new subdomain and setup an alpha version of MediaWiki there in order to make the trace.

Anybody having an idea what other info VictorPorton could provide here to track this down?
debug log file is empty.

Aklapper triaged this task as Low priority.Mar 21 2015, 9:59 PM

@VictorPorton: Sorry that no-one could help here. Did you ever manage to track down the problem?

Aklapper changed the task status from Open to Stalled.Apr 17 2015, 6:28 PM

@VictorPorton: Sorry that no-one could help here. Did you ever manage to track down the problem?

suriyaa added a subscriber: suriyaa.
Krinkle closed this task as Declined.Jun 9 2017, 10:50 PM

Closing old report with no stack trace or steps to reproduce that has been stale for 2 years. This code path has been improved and refactored a fair bit (Database transactions and request shutdown handling). This has most likely been solved in the currently supported release lines.

Please file a new task if you encounter this issue again.