MySQL 3148

This error occurs when an invalid character is used in a JSON path. It is a MySQL 3148 error code and the literal message is "Invalid utf8mb4 character string: '%s' for column '%s' at row %ld".

How It Affects Your App

The error indicates that the application is attempting to use an invalid character set for a JSON path. This can lead to unexpected results when attempting to access data stored in a JSON format. It can also cause the application to crash or fail to execute properly. This can lead to data loss or corruption, as well as a decrease in user experience.

How To Fix

1. Check the error log for the MySQL 3148 error:

$ tail -f /var/log/mysql/error.log

2. Check the MySQL configuration file for the max_allowed_packet setting:

$ grep max_allowed_packet /etc/mysql/my.cnf

3. Increase the max_allowed_packet setting to a higher value:

max_allowed_packet = 16M

4. Restart the MySQL server:

$ sudo service mysql restart

5. Check the error log again to make sure the MySQL 3148 error is gone:

$ tail -f /var/log/mysql/error.log

6. Use an automated database observability tool to monitor and fix the MySQL 3148 in question. Automated database observability tools can provide real-time insights into the performance and health of your database, allowing you to quickly identify and address any issues that arise. This can help you proactively prevent MySQL 3148 errors from occurring in the future.

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