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This section describes the steps to downgrade a MySQL installation.
Downgrading is a less common operation than upgrade. Downgrading is typically performed because of a compatibility or performance issue that occurs on a production system, and was not uncovered during initial upgrade verification on the test systems. As with the upgrade procedure verification on the test systems. As with the upgrade procedure Chapter 10, Upgrading MySQL), perform and verify the downgrade procedure on some test systems first, before using it on a production system.
In the following discussion, MySQL commands that must be run using
a MySQL account with administrative privileges include
on the command line to specify
root user. Commands that require a
root also include a
-p option. Because
followed by no option value, such commands prompt for the
password. Type the password when prompted and press Enter.
SQL statements can be executed using the mysql
command-line client (connect as
root to ensure
that you have the necessary privileges).