Editing Manual/Upgrading (section)

===Web browser=== <!--T:105-->
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: ''See also <tvar name=update></tvar>''

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If your database is already big and in high production usage, then you should not be using the Web updater, e.g. because the update process will time out when the ''maximum_execution_time'' is reached. In that case you should use [[update.php]] from the command-line interface (not from the web). What exactly is "too big" depends on your server (e.g. on its performance, the load and on how long the maximum execution time of PHP allows the script to run). If your wiki is too big for the web updater and your hosting provider does not allow command-line access, then you need to migrate your wiki to another hosting account, preferably to one that does have shell access.
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# <translate><!--T:108--> Always [[<tvar name=1>Special:MyLanguage/Manual:Backing up a wiki</tvar>|back up]] before performing database maintenance.</translate>
# <translate><!--T:109--> Navigate your web browser to <tvar name=1><code>'''/mw-config/index.php'''</code></tvar>.</translate> <translate><!--T:559--> For example, if your wiki is at <tvar name=1><code><nowiki>http://example.org/w/index.php</nowiki></code></tvar>, then navigate to <tvar name=2><code><nowiki>http://example.org/w/mw-config/index.php</nowiki></code></tvar>.</translate>
# <translate><!--T:110--> Select your language and click continue.</translate>
# <translate><!--T:111--> The existing installation should be detected. Follow the instructions on the screen to upgrade it.<br/>If asked for the "upgrade key", open your <tvar name=localsettings></tvar> file and look for the key assigned to <tvar name=upgkey></tvar>.</translate>

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It might happen that the web-updater does not seem to work: Instead of seeing the initial language selection screen, you might see an empty wiki page, possibly with some error message. In this case it is most likely that your web server uses Rewrite Rules (most likely for [[<tvar name=shorturl>Special:MyLanguage/Manual:Short URL</tvar>|short URLs]]), which do not show you the updater at ''mw-config/'', but a wiki page at ''Mw-config/'', with capital "M". In this case, rename the ''.htaccess'' file for the time of the update. Then you should be able to access the web-updater.</translate>

{{Warning|1=<translate><!--T:113--> If you use this method, make sure to '''change the name of the .htaccess file back''' after running the upgrade script! Otherwise, short URLs and possibly other stuff will be broken!</translate>}}

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