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Mysqlcheck -no-defaults -check-upgrade -all-databases -auto-repair Mysqlcheck -no-defaults -all-databases -fix-db-names -fix-table-names Mysqlcheck -no-defaults -check-upgrade -auto-repair -databases mysql mysql_upgrade works by doing the following operations: # Find out path to datadirĮcho "show show variables like 'datadir'" | mysql Mariadb-upgrade/mysql_upgrade is mainly a framework to call mysqlcheck. Using mariadb-upgrade/mysql_upgrade mysql_upgrade [-user=# -password A format change in the storage engine requires an update (very rare).The table uses an index for which there has been a collation change (rare).For tables that are not up to date, runs ALTER TABLE table_name FORCE on the table to update it. Check that all tables are up to date (runs CHECK TABLE table_name FOR UPGRADE).Update the system tables in the mysql database to the latest version (normally just add new fields to a few tables).The main work of mariadb-upgrade/mysql_upgrade is to: In most cases, mariadb-upgrade/mysql_upgrade should just take a few seconds.

It is recommended to make a backup of all the databases before running mariadb-upgrade/mysql_upgrade. Running it before you shut down the old version will not hurt anything and will allow you to make sure it works and figure out authentication for it ahead of time. Mariadb-upgrade/mysql_upgrade is run after starting the new MariaDB server. It needs to be run as a user with write access to the data directory. It's also safe to run mariadb-upgrade/mysql_upgrade for minor upgrades, as if there are no incompatibilities nothing is changed. You also have to use mysql_upgrade after a direct "horizontal" migration, for example from MySQL 5.5.40 to MariaDB 5.5.40. You should run mariadb-upgrade/mysql_upgrade after upgrading from one major MySQL/MariaDB release to another, such as from MySQL 5.0 to MariaDB 10.4 or MariaDB 10.4 to MariaDB 10.5. Mariadb-upgrade/mysql_upgrade is a tool that checks and updates your tables to the latest version. Symptoms of Not Having Run mariadb-upgrade/mysql_upgrade When It Was Needed.Speeding Up mariadb-upgrade/mysql_upgrade.Differences Between mysql_upgrade in MariaDB and MySQL.