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MySQL Replication Falling Behind (Lag, Delay) Notes (Doc ID 2256128.1)

Last updated on APRIL 11, 2018

Applies to:

MySQL Server - Version 5.6 and later
Information in this document applies to any platform.

Symptoms

 

On a Replication scenario, the slave server is reported as being lagging or falling behind the master

being the usual symptom the existence of  "seconds_behind_master" different from zero when issuing the command:

  

Cause

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In this Document
Symptoms
Cause
 Understanding seconds_behind_master
 What is lagging ?
Solution
 All Slaves experiencing the issue
 I/O Thread lagging
 SQL Thread Lagging
References


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