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MySQL 9.5 Reference Manual  /  Downgrading MySQL

Chapter 4 Downgrading MySQL

Notes

  • Make sure you understandthe MySQL release model for MySQL long-term support (LTS) and Innovation releases before proceeding with a downgrade.

  • A replication topology is downgraded by following the rolling downgrade scheme described atSection 19.5.3, “Upgrading or Downgrading a Replication Topology”, which uses one of the supported single-server methods for each individual server downgrade.

  • Monthly Rapid Updates (MRUs) and hot fixes also count as releases in this documentation.

Table 4.1 Downgrade Paths for MySQL Server

Downgrade PathPath ExamplesSupported Downgrade MethodsNotes
Within an LTS series

8.4.y LTS to 8.4.x LTS

In-place, logical dump and load, MySQL Clone, or by using replication
From an LTS or Bugfix series to the previous LTS or Bugfix series8.4.x LTS to 8.0.yLogical dump and load or by using replicationOnly supported for rollback purposes (that is, if no new server functionality has been applied to the data)
From an LTS or Bugfix series to an Innovation seriesafter the previous LTS series8.4.x LTS to 8.3.0 InnovationLogical dump and load or by using replicationOnly supported for rollback purposes (that is, if no new server functionality has been applied to the data)
From within an Innovation series9.6 to 9.5Logical dump and load or by using replicationOnly supported for rollback purposes (that is, if no new server functionality has been applied to the data)

Downgrading to MySQL 5.7 or earlier is not supported.