Note: You are currently viewing documentation for Moodle 2.2. Up-to-date documentation for the latest stable version is available here: Migration from MyISAM to InnoDB.

Migration from MyISAM to InnoDB

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See Documentation for migration from MyISAM to InnoDB for the current discussion which prompted the creation of this page. --Frank Ralf 11:41, 24 November 2010 (UTC)

MySQL Configuration

Before attempting to change the table type, you should:

  • check InnoDB is enabled. Log in to MySQL and run the command SHOW ENGINES. Make sure that support for InnoDB shows either "YES" or "DEFAULT".
  • set innodb_file_per_table if required. This setting can be useful for large installations, but it only affects newly created tables and can't be applied retrospectively.

Various Methods described in Moodle Forums

  • use the CLI script in admin/cli/mysql_engine.php (requires access to shell, mysql only, and the config.php must only have one moodle instance)
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