Cannot copy database: Errors occurred while executing: mysqldump: Got errno 32 on write

Symptoms

• Unable to copy a database in Plesk > Domains > example.com > Databases > the Copy button with the error:

  PLESK_ERROR: Errors occurred while executing: mysqldump: Got errno 32 on write

• There is the following error message at /var/log/plesk/panel.log:

  DEBUG [panel] Db_Clone_Exception: Unable to clone database. 
  file: /usr/local/psa/admin/plib/Db/Clone/Task.php 
  line: 48 
  code: 0 
  trace: #0 /usr/local/psa/admin/plib/Db/Table/Broker/LongTasks.php(262): Db_Clone_Task->run() 
  #1 /usr/local/psa/admin/plib/Db/Table/Broker/LongTasks.php(180): Db_Table_Broker_LongTasks->_syncStart(object of type Db_Table_Row_LongTask) 
  #2 /usr/local/psa/admin/plib/Db/Table/Broker/LongTasks.php(112): Db_Table_Broker_LongTasks->_startQueue(object of type Db_Table_Row_LongTask, boolean true) 
  #3 /usr/local/psa/admin/plib/Task/Async/Executor.php(52): Db_Table_Broker_LongTasks->start(object of type Db_Table_Row_LongTask, string 'synchronously') 
  #4 /usr/local/psa/admin/plib/scripts/task-async-executor.php(12): Task_Async_Executor->execute()

Conditions

The value of the parameter max_allowed_packet in the MySQL configuration is low.

Resolution

Increase the value of the parameter max_allowed_packet as described in the following article:
How to set the value of max_allowed_packet or wait_timeout for MySQL on a Plesk server?