MySQL 8.3 Release Notes
Notes
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Make sure you understand the release model for MySQL innovation and long-term support (LTS) versions before you proceed with a downgrade.
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Monthly Rapid Updates (MRUs) and hotfixes also count as "releases" in the following discussions.
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We use "8.4.x LTS" as an example for an LTS release and "8.3.0" as an example for a bugfix release only for illustrative purposes.
The supported downgrade paths for MySQL Server are listed in Table 4.1, “Downgrade Paths for MySQL Server” below:
Table 4.1 Downgrade Paths for MySQL Server
| Downgrade Path | Path Examples | Downgrade Methods | Notes |
|---|---|---|---|
| Within an LTS or bugfix release series |
8.0.36 to 8.0.35 8.4.x+1 LTS to 8.4.x LTS |
in-place downgrade, logical downgrade, asynchronous replication, MySQL Clone | In-place downgrade to 8.0.34 is not supported. |
| From an LTS or bugfix release to the last LTS or bugfix release series | 8.4.x LTS to 8.0.y | logical downgrade, asynchronous replication | Only supported for rollback purposes (that is, if no new server functionality has been applied to the data) |
| From an LTS or bugfix release to an innovation release after the last LTS series | 8.4.x LTS to 8.3.0 | logical downgrade, asynchronous replication | Only supported for rollback purposes (that is, if no new server functionality has been applied to the data) |
| From an innovation release series to another one after the last LTS series | 8.3 to 8.2 | logical downgrade, asynchronous replication | Only 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.