- Plesk for Linux
The following error is shown in Tools & Settings > Migration & Transfer Manager > source server:
PLESK_ERROR: Internal error ;-P ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000]  Connection refused (Abstract.php:144)
When the migration is finished, in Tools & Settings > Migration & Transfer Manager > source server > [Details]:
PLESK_ERROR: [Migration] Failed to copy content of database 'db_example' Migration tools tried to perform operation in 3 attempts.
Attempt #1 failed with the following error: Command execution failed on the local server with non-zero exit code. command: mysql --defaults-file=/usr/local/psa/var/modules/panel-migrator/sessions/20161221153145/target-server/my_localhost_db_example.cnf -h localhost -P 3306 -uadmin db_example < /usr/local/psa/var/modules/panel-migrator/sessions/20161221153145/target-server/db-dumps/db_example.sql exit code: 1 stdout: stderr: ERROR 2013 (HY000) at line 823: Lost connection to MySQL server during query
Insufficient amount of memory on the target server.
Increase amount RAM on the destination server to at least 3.
Open Tools & Settings > Migration & Transfer Manager > source server.
Click on Re-sync to synchronize content between the source and target server: