Migration from MyISAM to InnoDB: Difference between revisions

Revision as of 23:44, 29 November 2010

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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)

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.

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)

@@ Line 7: / Line 7: @@
 * '''check InnoDB is enabled'''. Log in to MySQL and run the command [http://dev.mysql.com/doc/refman/5.1/en/show-engines.html SHOW ENGINES]. Make sure that support for InnoDB shows either "YES" or "DEFAULT".
 * '''set innodb_file_per_table if required'''. [http://dev.mysql.com/doc/refman/5.1/en/innodb-multiple-tablespaces.html 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)
 [[fr:admin/innodb]]