com.mysql.jdbc.PacketTooBigException: Solution

According to the configuration file, mysql will limit the size of the packets accepted by the server.

Sometimes large inserts and updates are limited by the max_allowed_packet parameter and fail.

View the current configuration
show VARIABLES like '%max_allowed_packet%';

This is my modified version to support 20M data transfer.

Modification method:

My MySQL version is 5.0

Find the my.ini file   in the mysql installation directory and add a line at the end:

 
max_allowed_packet = 20M (this value is set as needed)