From mediawiki.org
MediaWiki extensions manual
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Release status: stable
Implementation Database , Special page
Description Provides the Special page to generate/delete/download dumps
Maintainer(s) Miraheze system administrators
Latest version continuous updates
MediaWiki 1.36.0+
PHP 7.2+
Database changes Yes
Composer miraheze/datadump
Tables data_dump
License GNU General Public License 3.0 or later

  • $wgDataDump

  • view-dump
  • view-image-dump
  • generate-dump
  • delete-dump
Public wikis using 163 (Ranked 433rd)

The DataDump extension provides means for users to generate, delete or download their dump without the involvement of sysadmins.

For reporting an issue or a bug, please use Miraheze Phabricator. See here for the workboard.


  • Download and place the file(s) in a directory called DataDump in your extensions/ folder.
  • Add the following code at the bottom of your LocalSettings.php :
    wfLoadExtension( 'DataDump' );
  • Run the update script which will automatically create the necessary database tables that this extension needs.
  • Configure as required.
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.


parameter default comment
$wgDataDump [] This config defines how dumps are generated and which types of dumps there are.
$wgDataDumpInfo "" This config defines the information displayed atop Special:DataDump.
$wgDataDumpLimits ["memory": 0, "filesize": 0, "time": 0, "walltime": 0] This config defines resources allocated to running scripts.
$wgDataDumpDirectory false This config defines the directory where to store the dumps.
$wgDataDumpFileBackend false This config defines backend to use ($wgFileBackends)


This is an example on how to setup the configuration. You can tailor it to your specific needs:

$wgDataDumpDirectory = "<path>${wgDBname}/";

$wgDataDump = [
    'xml' => [
        'file_ending' => '.xml.gz',
        'generate' => [
            'type' => 'mwscript',
            'script' => "$IP/maintenance/dumpBackup.php",
            'options' => [
                "gzip:${wgDataDumpDirectory}" . '${filename}',
        'limit' => 1,
        'permissions' => [
            'view' => 'view-dump',
            'generate' => 'generate-dump',
            'delete' => 'delete-dump',
    'image' => [
        'file_ending' => '.zip',
        'generate' => [
            'type' => 'script',
            'script' => '/usr/bin/zip',
            'options' => [
        'limit' => 1,
        'permissions' => [
            'view' => 'view-dump',
            'generate' => 'view-image-dump',
            'delete' => 'delete-dump',

$wgAvailableRights[] = 'view-dump';
$wgAvailableRights[] = 'view-image-dump';
$wgAvailableRights[] = 'generate-dump';
$wgAvailableRights[] = 'delete-dump';

Note that ${filename} is replaced internally in the extension so make sure that it is always in a single string not in a double string.

The limit parameter specifies how many dumps can be generated for that wiki.

See also