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Migration or backup failed: mysqldump: Got error: 145

Plesk full backup task got failed with

Failed to execute backup of mysql database
Manual backup of domain's database results in error:

# plesk db dump db_name > database_backup.sql
mysqldump: Got error: 145: Table './db_name/toc_whos_online' is marked as crashed and should be repaired when using LOCK TABLES
The following error appears during a migration process:

WARNING: (mysql object 'db_name') Not all the data was backed up into /var/cache/<timestamp>/clients/ccia/domains/domain.tld/databases/db_name_1 successfully
[....]
mysqldump: Got error: 145: Table './db_name/Logs' is marked as crashed and should be repaired when using LOCK TABLES

Or

stderr: mysqldump: Got error: 144: "Table './db_name/table_name' is marked as crashed and last (automatic?) repair failed" when using LOCK TABLES

Database table corruption.

Repair the corrupted database using one of the following methods:

Log in to Plesk
Navigage to Plesk > Domains > example.com > Databases > db_name and click Check and Repair:

Log in to Plesk;
Navшgate to Plesk > Domains > example.com > Databases > db_name and click phpMyAdmin:
Click SQL button and run the following query:

REPAIR TABLE table_name;

Where table_name is the name of the table to repare

Connect to the server via SSH;
Execute the command:

# MYSQL_PWD=cat /etc/psa/.psa.shadow mysqlcheck -uadmin -r db_name table_name

Where db_name is the name of the database where table table_name to be repaired.

Note: if the solutions below don't help, the affected database should be restored from a backup.

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