Hundreds of errors from Plesk Scheduler

[shall]

I'm getting hundreds of errors like this within "The Plesk Scheduler notification":

Can't query SELECT val FROM misc WHERE (param = 'not_count_mail_disk_usage'): MySQLDatabaseProvider error 2006:MySQL server has gone away

There are a variety of formats, but the errors are pretty consistent with this portion:

MySQLDatabaseProvider error 2006:MySQL server has gone away

Thoughts?

 

[ally@]

Plesk cannot connect to MySQL service during scheduled tasks calculation (backup or statistics)

For some reason MySQL server, where Plesk stores its database is not accessible at the time and the error records are generated

You can try to switch Plesk database provider to MSSQL type with reconfigurator to localize the problem.