Why am I Losing My MySQL Connection During CSV File Imports?

Troubleshooting Disconnected MySQL Server during Query Import

When importing data from a large CSV file to a MySQL table, a common issue encountered is losing connection to the server during the import process. The error code 2013 signifies that the connection to the MySQL server was lost during the query execution.

Possible Causes and Solutions:

1. Exceeded Maximum Packet Size: The default maximum packet size allowed for MySQL connections may be insufficient for the size of your CSV file. To resolve this, increase the max_allowed_packet value in your my.cnf or my.ini configuration file located in the [mysqld] section. Your database size may require a higher packet size, so adjust accordingly.

<br>max_allowed_packet=32M<br>

2. Alternative Import Method: If increasing the packet size does not resolve the issue, try using the following command to import your data:

<br>mysql -u <user> --password=<password> <database name> <file_to_import<br>

This method bypasses the connection issue by establishing a new connection directly to the database and imports the file using the command-line interface.

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