MariaDB 5.5 Changes & Improvements

MariaDB 5.5 is no longer maintained. Please use a more recent release.

The most recent release in the MariaDB 5.5 series is:MariaDB 5.5.68 Download Now

MariaDB 5.5 is MariaDB 5.3 + MySQL 5.5, with added features. The first stable release was in April 2012, and the final release in May 2020.

For upgrading to MariaDB 10.0, the more recent stable release, see .

Feature Comparison Matrix

We have created an Optimizer Feature Comparison Matrix showing the new optimizer features in and 5.3 compared to MySQL 5.5 and 5.6.

See also a detailed breakdown of .

New Features

• Significantly more efficient , comparable in functionality to the closed source feature in MySQL Enterprise.

• ()

• ()

• updated to version 2.0.4.

Information Schema

There are a number of new tables:

Minor Extensions

• Updates to performance schema tables are not stored in the and thus not replicated to slaves. This is to ensure that monitoring of the master will not cause a slower performance on all slaves. This also fixes a crash on the slaves.

New features are added to .

Deprecated / Disabled Features

• is no longer in the binary builds/distributions. It's however still in the source distributions and in the source tree. The reason is that PBXT is no longer actively maintained, has a few bugs that are not fixed and is not in widespread use.

Switching Between InnoDB and

comes with both (compiled in) and InnoDB (as a plugin). By default uses XtraDB. If you want to switch to use InnoDB you can do:

( should point to where ha_innodb.so is installed)

The above options can of course also be added to your file:

If you want you can also compile MariaDB with .

Security Vulnerabilities Fixed in

For a complete list of security vulnerabilities (CVEs) fixed across all versions of MariaDB, see the page.

• : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

The following CVEs are also fixed in but the fix is not tied to a specific version number:

List of All Releases

See Also