How to repair non-InnoDB MySQL tables on Plesk server?
Go to Domains > example.com > Databases and click Check and Repair for the required database
Not all the storage engines in MySQL database support repair of the tables. If storage engine does not support repair the following message will appear:
The storage engine for the table doesn't support repair
In such a case, follow the instructions provided in the article: How to fix InnoDB corruption cases for the MySQL database?
How to access MySQL databases?