1. Check the error log for the MySQL 145 error:

$ ALTER TABLE table_name MODIFY column_name data_type;

2. Check the status of the MySQL server:

$ mysqladmin status

3. Check the MySQL configuration file for any errors:

$ cat /etc/my.cnf

4. Check the MySQL process list for any errors:

$ mysqladmin processlist

5. Check the MySQL database for any errors:

$ mysqlcheck -A

6. Restart the MySQL server:

$ service mysql restart

7. Use an automated database observability tool to monitor and fix the MySQL 145 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. These tools can also provide detailed metrics and logs that can help you diagnose and troubleshoot any MySQL 145 errors.