MySQL · December 20, 2023

How to Fix MySQL Error - ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX

How to Fix MySQL Error - ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX

MySQL is a popular open-source relational database management system used by many websites and applications. However, like any software, it can encounter errors that need to be resolved. One such error is the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error. In this article, we will explore what this error means and how to fix it.

Understanding the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX Error

The ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error occurs in MySQL replication setups. Replication is a process where data from one MySQL server, known as the master, is copied to one or more other servers, known as slaves. This allows for redundancy and load balancing.

The error message indicates that the value of the heartbeat interval set on the slave server is higher than the maximum allowed value. The heartbeat interval is the time interval between checks to ensure that the connection between the master and slave servers is still active.

Fixing the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX Error

To fix the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error, you need to adjust the heartbeat interval on the slave server to a value within the allowed range. Here are the steps to do so:

Step 1: Connect to the MySQL Server

First, you need to connect to the MySQL server where the slave instance is running. You can use a command-line tool like MySQL client or a graphical interface like phpMyAdmin.

Step 2: Check Current Heartbeat Interval

Once connected, you can check the current heartbeat interval value by running the following query:

SHOW VARIABLES LIKE 'slave_net_timeout';

This query will display the current value of the slave_net_timeout variable, which represents the heartbeat interval in seconds.

Step 3: Adjust the Heartbeat Interval

If the current value is higher than the maximum allowed value, you need to adjust it. The maximum allowed value is typically set to 31536000 seconds (one year).

To change the heartbeat interval, run the following query:

STOP SLAVE;
SET GLOBAL slave_net_timeout = <new_value>;
START SLAVE;

Replace <new_value> with the desired heartbeat interval in seconds. Make sure the new value is within the allowed range.

Step 4: Verify the Changes

After adjusting the heartbeat interval, you can verify the changes by running the SHOW VARIABLES LIKE 'slave_net_timeout'; query again. The new value should reflect the updated heartbeat interval.

Conclusion

The ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error in MySQL replication setups can be resolved by adjusting the heartbeat interval on the slave server. By following the steps outlined in this article, you can fix this error and ensure smooth replication between your MySQL servers.

Summary

In summary, the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error is encountered in MySQL replication setups when the heartbeat interval on the slave server exceeds the maximum allowed value. To fix this error:

  1. Connect to the MySQL server where the slave instance is running.
  2. Check the current heartbeat interval using the SHOW VARIABLES LIKE 'slave_net_timeout'; query.
  3. Adjust the heartbeat interval using the STOP SLAVE, SET GLOBAL slave_net_timeout = <new_value>, and START SLAVE; queries.
  4. Verify the changes by running the SHOW VARIABLES LIKE 'slave_net_timeout'; query again.

By following these steps, you can resolve the ER_SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX error and ensure efficient replication in your MySQL environment. For more information on VPS hosting solutions, visit Server.HK.

You may also like...