Symptoms
- Plesk upgrade fails/completes with the following message:PLESK_ERROR: ERROR while trying to upgrade APSC SQL database from 11.1.0
Check the error reason(see log file: /var/log/plesk/install/plesk_17.5.3_installation.log), fix and try againIn the mentioned above logfile, the following error message can be found:ERROR 1548 (HY000) at line 67: Cannot load from mysql.proc. The table is probably corrupted ... mysqldump: Couldn't execute 'SHOW VARIABLES LIKE 'gtid_mode'': Native table 'performance_schema'.'session_variables' has the wrong structure (1682)
- Migration completes with the following warning:PLESK_INFO: [Migration] Failed to copy content of database ‘DB_NAME’
Migration tools tried to perform operation in 3 attempts: Command execution failed on the source server ‘source’ (203.0.113.2) with non-zero exit code.
command: MYSQL_PWD=”$(cat)” mysqldump -h localhost -P 3306 -uadmin –quick –quote-names –add-drop-table –default-character-set=utf8 –set-charset –routines hardcore > /tmp/db-dumps/DB_NAME.sql
exit code: 2
stdout:
stderr: mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘DB_NAME”: Cannot load from mysql.proc. The table is probably corrupted (1548) - A backup process completes with the following warning:PLESK_INFO: Warning : mysql “Database”Not all the data was backed up into /var/lib/psa/dumps/…./databases/Database successfully. mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘Database”: Cannot load from mysql.proc. The table is probably corrupted (1548)
- Operations on databases in phpMyAdmin fails with:PLESK_INFO: Errors occurred while executing: mysqldump: Couldn’t execute ‘SHOW FUNCTION STATUS WHERE Db = ‘db_name”: Cannot load from mysql.proc. The table is probably corrupted (1548)
- The following error message appears in Plesk at Tools & Settings > Database Servers:PLESK_ERROR: Error: Cannot load from mysql.user. The table is probably corruptedand the MySQL (localhost) status icon is grayed out
Cause
The mysql.<table_name>
table is broken or the structure of a column in the table is incorrect.
Resolution
- Connect to the Plesk server via SSH.
- Repair the broken table:
- If
mysql.proc
is corrupted:# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -uadmin mysql -Ne”REPAIR TABLE mysql.proc”
+————+——–+——–+—-+
| mysql.proc | repair | status | OK |
+————+——–+——–+—-+ - If
mysql.user
is corrupted:# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -uadmin mysql -Ne”REPAIR TABLE mysql.user”
+————+——–+——–+—-+
| mysql.user | repair | status | OK |
+————+——–+——–+—-+
- If
- Upgrade MySQL system tables:# MYSQL_PWD=`cat /etc/psa/.psa.shadow` /usr/bin/mysql_upgrade –force -uadmin –upgrade-system-tables
- Restart the MySQL service. The command depends on installed MySQL server and operating system:# service mysql restart# service mariadb restart