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MySQL 8.0 Reference Manual  /  ...  /  Replication and User Name Length

19.5.1.38 Replication and User Name Length

The maximum length for user names in MySQL 8.0 is 32 characters. Replication of user names longer than 16 characters fails when the replica runs a version of MySQL previous to 5.7, because those versions support only shorter user names. This occurs only when replicating from a newer source to an older replica, which is not a recommended configuration.


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Related Documentation
MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
Download this Manual
PDF (US Ltr) - 43.3Mb
PDF (A4) - 43.4Mb
Man Pages (TGZ) - 297.2Kb
Man Pages (Zip) - 402.4Kb
Info (Gzip) - 4.3Mb
Info (Zip) - 4.3Mb
Excerpts from this Manual
MySQL Backup and Recovery
MySQL Globalization
MySQL Information Schema
MySQL Installation Guide
Security in MySQL
Starting and Stopping MySQL
MySQL and Linux/Unix
MySQL and Windows
MySQL and macOS
MySQL and Solaris
Building MySQL from Source
MySQL Restrictions and Limitations
MySQL Partitioning
MySQL Tutorial
MySQL Performance Schema
MySQL Replication
Using the MySQL Yum Repository
MySQL NDB Cluster 8.0