MySQL 1420

This error occurs when a statement is executed with an open cursor. MySQL 1420 indicates that the statement cannot be executed until the cursor is closed.

How It Affects Your App

MySQL 1420 ER_EXEC_STMT_WITH_OPEN_CURSOR indicates that an application is attempting to execute a statement while a cursor is still open. This can lead to unexpected results and can cause the application to crash or malfunction. It can also lead to data corruption or data loss. This error should be addressed immediately to ensure the application is functioning properly and data is not compromised.

How To Fix

1. Check the error log for the MySQL 1420 error:
$ tail -f /var/log/mysql/error.log
2. Check the MySQL configuration file for any misconfigurations:
$ cat /etc/mysql/my.cnf
3. Check the MySQL server status to see if the server is running:
$ mysqladmin status
4. Check the MySQL server variables to see if any of them are set incorrectly:
$ mysqladmin variables
5. Check the MySQL server process list to see if any queries are running for too long:
$ mysqladmin processlist
6. Check the MySQL server connections to see if there are too many connections:
$ mysqladmin connections
7. Check the MySQL server tables to see if any of them are corrupted:
$ mysqladmin tables
8. If the issue persists, restart the MySQL server:
$ mysqladmin restart
9. If the issue still persists, consider using an automated database observability tool to monitor and fix the MySQL 1420 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 fix any issues that may arise.

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