Important:
The default value for max_allowed_packet is 4MB for MySQL. If this value is less than the document size, the document insertion into the database fails. To avoid this error, contact your MySQL database administrator to update the value of max_allowed_packet value to the largest possible document size to enable document processing and insertion into the database. The protocol limit for max_allowed_packet is 1GB. The value must be a multiple of 1024; non-multiples are rounded down to the nearest multiple.