Ref. Link: https://kb.plesk.com/en/124139

Applies to:

• Plesk 12.0 for Windows
• Plesk 11.5 for Windows
• Plesk 10.4 for Windows

Please note this instruction for client database server only. You cannot upgrade mysql server with Plesk database.

You can use Mysql upgrade manual from vendor:
http://dev.mysql.com/doc/refman/5.5/en/upgrading.html

Please do not forget to backup data before upgrade. In general instruction is the following:

• Create dump of database:

C:\Program Files\Parallels\Plesk\Databases\MySQL51\bin>mysqldump -uadmin -p**** -P3306 –all-databases >all.dump

• Download zip archive
• Create copy of the following folders, here client databases are saved:

C:\Program Files\Parallels\Plesk\Databases\MySQL
C:\Program Files\Parallels\Plesk\Databases\MySQL51

• stop mysql service:

NET STOP MySQL

• extract downloaded archive to C:\Program Files\Parallels\Plesk\Databases\MySQL51 overwriting the existing installation.
• start Mysql server

NET START MySQL

• upgrade mysql:

C:\Program Files\Parallels\Plesk\Databases\MySQL51\bin>mysql_upgrade -uadmin -p**** -P3306