because an unknown database came out in the middle, the unconnected database does not exist, resulting in the error of connection packet information. Report this error.
Show global status like ‘abort%’;
Aborted_clients and Aborted_connects whether the changes are drastic. The reasons for the aborted_active error include: the client connects to an unauthenticated database, incorrect password, incorrect connection packet information, and connection timeout (the default is 10s)
Aborted_clients may have failed to perform mysql_close(), exceeded the value of wait_timeout or interactive_timeout because the connection has not been closed (the timeout is 8 hours), terminated during program execution, excessively small max_allowed_packet, network issues, thread bugs, etc