MySQL Enterprise Backup User's Guide (Version 4.1.3)

5.3 Restoring a Backup with a Database Upgrade or Downgrade

You can facilitate a server upgrade or downgrade by using MySQL Enterprise Backup to make a backup of your server data, restore it to a data directory, and start a different version of MySQL server on the old data. However, you may encounter technical challenges during a server upgrade or downgrade, and it is beyond the function of MySQL Enterprise Backup, as a backup tool, to ensure a successful server upgrade or downgrade. Users interested in the topic are advised to consult the MySQL server manual, especially the Upgrading MySQL and Downgrading MySQL sections.

Here are a number of things that users should pay attention to when restoring a backup with a database upgrade or downgrade: