Upgrading from MariaDB 10.5 to MariaDB 10.6

How to Upgrade

For Windows, see Upgrading MariaDB on Windows.

Before you upgrade, it would be best to take a backup of your database. This is always a good idea to do before an upgrade. We would recommend Mariabackup.

The suggested upgrade procedure is:

  1. Modify the repository configuration, so the system's package manager installs MariaDB 10.6. For example,
  2. Stop MariaDB.
  3. Uninstall the old version of MariaDB.
    • On Debian, Ubuntu, and other similar Linux distributions, execute the following:
      sudo apt-get remove mariadb-server
    • On RHEL, CentOS, Fedora, and other similar Linux distributions, execute the following:
      sudo yum remove MariaDB-server
    • On SLES, OpenSUSE, and other similar Linux distributions, execute the following:
      sudo zypper remove MariaDB-server
  4. Install the new version of MariaDB.
  5. Make any desired changes to configuration options in option files, such as my.cnf. This includes removing any options that are no longer supported.
  6. Start MariaDB.
  7. Run mariadb-upgrade.
    • mariadb-upgrade does two things:
      1. Ensures that the system tables in the mysql database are fully compatible with the new version.
      2. Does a very quick check of all tables and marks them as compatible with the new version of MariaDB .

Incompatible Changes Between 10.5 and 10.6

On most servers upgrading from 10.5 should be painless. However, there are some things that have changed which could affect an upgrade:

The bahaviour of sorting non-deterministic variables in a Select query can be changed , see (MDEV-27745)

Reserved Word


From MariaDB 10.6.0 until MariaDB 10.6.5, tables that are of the COMPRESSED row format are read-only by default. This was intended to be the first step towards removing write support and deprecating the feature.

This plan has been scrapped, and from MariaDB 10.6.6, COMPRESSED tables are no longer read-only by default.

From MariaDB 10.6.0 to MariaDB 10.6.5, set the innodb_read_only_compressed variable to OFF to make the tables writable.

Character Sets

From MariaDB 10.6, the utf8 character set (and related collations) is by default an alias for utf8mb3 rather than the other way around. It can be set to imply utf8mb4 by changing the value of the old_mode system variable.

Options That Have Changed Default Values

OptionOld default valueNew default value

Options That Have Been Removed or Renamed

The following options should be removed or renamed if you use them in your option files:

Deprecated Options

The following options have been deprecated. They have not yet been removed, but will be in a future version, and should ideally no longer be used.

wsrep_replicate_myisamUse wsrep_mode instead.
wsrep_strict_ddlUse wsrep_mode instead.

Major New Features To Consider

See Also


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