Why am I getting the 'Error while sending QUERY packet' when inserting large data into a MySQL database?

Troubleshooting "Error while sending QUERY packet"

While attempting to insert data into a database, you may encounter the "Error while sending QUERY packet." Let's delve into the issue and its solution.

The provided code utilizes PDO to prepare and execute a query to insert data into a column defined as longtext. However, the error suggests that the data size exceeds a limit.

MySQL imposes a restriction on the maximum size of data packets that can be sent during a query. By default, this limit is 16MB. Longtext should theoretically support data up to 4GB.

The issue arises when the data being inserted is larger than the allowed packet size. MySQL sends data in packets, and if the packet cannot accommodate the entire data, it results in the "Error while sending QUERY packet."

Solution:

To solve this problem, you have two options:

1. Break the query into smaller chunks: Divide the excessive data into multiple insertions. Each insertion should be within the allowed packet size limit.
2. Increase the max_allowed_packet size: Execute the following command to increase the maximum packet size:

SET GLOBAL max_allowed_packet=524288000;

This command sets the max_allowed_packet size to 500MB, which should suffice for most scenarios. Remember to reset the value to the default after inserting the data to avoid any potential performance overhead.

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