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The MySQL database engine is the most commonly-used database backends for MediaWiki.Since MySQL used to be the relational database management system used by the Wikimedia Foundation websites, it is well-supported in MediaWiki.Much of the advice for MySQL and for MariaDB apply to each other.
See Compatibility#Database for a list of supported versions.
Connecting to MySQL[edit]
mysql -u wikiuser -p my_wiki
Change wikiuser and my_wiki to the username and database name for your wiki ($wgDBuser and $wgDBname).When prompted, enter your password.
Example[edit]
$ mysql -u root -p my_wikiEnter password: Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -AWelcome to the MySQL monitor. Commands end with; or \g.Your MySQL connection id is 150Server version: 5.6.24-0ubuntu2 (Ubuntu)...Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql>.
Installation[edit]
- For further information, see Manual:Installing MediaWiki#Create a database
Basically, if MySQL is installed, the installation script can create a database for you.Just supply the script with your MySQL root password (by default blank).
 Warning: | Leaving the root password blank can seriously compromise the security of the MediaWiki installation. You should modify the password if you haven't already. |
If you are installing MediaWiki on an ISP server, you might have to share a db with some other applications, which increases the risk of a conflict between database tables required by MediaWiki with pre-existing tables. To solve this problem you can instruct MediaWiki to use a table prefix, so that all tables of MediaWiki begin with this prefix. Alternatively, if your ISP allows, use different databases for each application that resides on the server.
Maintenance[edit]
Multiple maintenance scripts are included in the /maintenance/ directory of your MediaWiki installation.Some of these scripts are provided to refresh parts of the database as one-time operations.
Import database[edit]
- For further information, see Manual:Importing XML dumps
Export database[edit]
- For further information, see Manual:Backing up a wiki
See also[edit]
- Manual:MysqlUpdater.php
- Manual:Security#General MySQL recommendations
- Tool to convert SQLite MediaWiki database into MySQL
