When creating a database, modifying a database user settings or installing WordPress in Plesk, the operation fails with one of the the following error messages:
PLESK_ERROR: Connection to the database server failed: Column count of mysql.user is wrong. Expected 42, found 39. Created with MySQL 50173, now running 50556. Please use mysql_upgrade to fix this error.
PLESK_ERROR: Column count of mysql.user is wrong. Expected 45, found 48. The table is probably corrupted
A Plesk backup task finishes with the warning:
PLESK_INFO: Warning: mysql “db_example”
Not all the data was backed up into /path/to/db_example successfully. Total space: 200.00 GB; Available space: 150.00 GB; Mounted on: /. mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘db_example”: Column count of mysql.proc is wrong. Expected 21, found 20. Created with MariaDB 100134, now running 100313. Please use mysql_upgrade to fix this error (1558)
- Routines (stored procedures and functions) are not displayed in phpMyAdmin.
Some tables in the mysql database have incorrect schema.
Connect to the server via SSH.
Upgrade the mysql database:
# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql_upgrade -uadmin -T –debug-check mysql