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How to Fix MySQL Error – ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED

How to Fix MySQL Error – ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED

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_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error. In this article, we will explore what this error means and how to fix it.

Understanding the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED Error

The ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error occurs when attempting to skip a replication event on a MySQL slave server. Replication is the process of copying data from one MySQL server (the master) to another (the slave). It is commonly used to create backups, distribute data, or improve performance.

When a replication event is skipped, the slave server’s SQL thread is instructed to ignore a specific event in the replication stream. However, if the event has already been executed, the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error is triggered.

Causes of the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED Error

There are several reasons why this error may occur:

  • Incorrect event position: If the event position specified for skipping is incorrect, the error can occur. It is crucial to ensure the correct position is provided.
  • Event already executed: If the event has already been executed on the slave server, attempting to skip it will result in the error. This can happen if the skip command is issued multiple times or if the replication stream is interrupted.
  • Replication inconsistency: In some cases, the error may indicate a replication inconsistency between the master and slave servers. This can occur due to network issues, server crashes, or other factors.

Fixing the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED Error

To resolve the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error, follow these steps:

  1. Identify the correct event position: Use the SHOW SLAVE STATUS command on the slave server to determine the current replication position. Look for the Relay_Master_Log_File and Exec_Master_Log_Pos values, which indicate the current event position.
  2. Stop the slave server: Execute the STOP SLAVE command to stop the slave server’s replication process.
  3. Skip the event: Use the CHANGE MASTER TO statement to skip the specific event. Set the MASTER_LOG_FILE and MASTER_LOG_POS values to the next event position after the one causing the error.
  4. Start the slave server: Execute the START SLAVE command to restart the slave server’s replication process.
  5. Verify replication: Monitor the slave server’s status using SHOW SLAVE STATUS to ensure replication is progressing without errors.

By following these steps, you should be able to fix the ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error and resume normal replication between the master and slave servers.

Summary

The ER_SYNC_SLAVE_SKIP_COUNTER_EXECUTED error can occur when attempting to skip a replication event on a MySQL slave server. It is essential to identify the correct event position and follow the necessary steps to resolve the error. If you encounter this error, Server.HK offers reliable and high-performance VPS hosting solutions that can help ensure smooth MySQL operations. Learn more about our Hong Kong VPS Hosting services and how they can benefit your business.