MySQL 147

This error indicates that the 'delayed' option for the replication thread is no longer supported in MySQL.

How It Affects Your App

The removal of the 'delayed' option for the replication thread has a significant impact on an application. Without this option, the application is unable to replicate data from the master to the slave in a delayed manner. This means that the application is unable to replicate data at a later time, which can be a problem if the application needs to replicate data at a specific time. Additionally, the application is unable to replicate data in a staggered manner, which can be beneficial for applications that need to replicate large amounts of data. As a result, the application may experience slower replication times and may be unable to replicate data at the desired time.

How To Fix

1. Check the error log for the MySQL 147 error:

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

2. Check the table structure for the table in question:

$ SHOW CREATE TABLE table_name;

3. Check the data types of the columns in the table:

$ DESCRIBE table_name;

4. Check the data types of the values being inserted into the table:

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

5. If the data types of the values being inserted into the table do not match the data types of the columns, then modify the data types of the columns to match the data types of the values being inserted:

$ ALTER TABLE table_name MODIFY column_name data_type;

6. If the data types of the values being inserted into the table match the data types of the columns, then check the length of the values being inserted into the table:

$ SELECT LENGTH(column_name) FROM table_name;

7. If the length of the values being inserted into the table exceeds the length of the columns, then modify the length of the columns to match the length of the values being inserted:

$ ALTER TABLE table_name MODIFY column_name VARCHAR(length);

8. After fixing the MySQL 147 error, it is recommended to use an automated database observability tool to monitor and fix the MySQL 147 in question. An automated database observability tool can help detect and diagnose MySQL 147 errors quickly and accurately. It can also provide insights into the root cause of the errors and suggest solutions to fix them.

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