MySQL 124

This error occurs when attempting to add a non-key part to a primary key in MySQL. It indicates that the primary key must only contain key parts, and any additional parts must be removed.

How It Affects Your App

The impact of MySQL 124 Non-key parts of the primary key not permitted on the application is that it prevents the application from properly accessing the database. This can lead to data not being properly stored or retrieved, which can cause errors in the application. It can also lead to data integrity issues, as the application may not be able to properly identify and distinguish between different records. This can lead to incorrect data being stored or retrieved, which can lead to incorrect results or decisions being made.

How To Fix

1. This command will show the current value of the max_connect_errors variable.

SHOW VARIABLES LIKE 'max_connect_errors';

2. This command will set the max_connect_errors variable to a higher value.

SET GLOBAL max_connect_errors=10000;

3. This command will flush the privileges so that the new value of the max_connect_errors variable is applied.

FLUSH PRIVILEGES;

4. This command will show the new value of the max_connect_errors variable.

SHOW VARIABLES LIKE 'max_connect_errors';

5. Use an automated database observability tool to monitor and fix the MySQL 124 in question. Automated database observability tools can help identify and diagnose issues quickly, as well as provide insights into the performance of the database. They can also provide alerts when certain thresholds are exceeded, allowing for quick resolution of issues.

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