Related Documentation Download this Manual
PDF (US Ltr) - 43.3Mb
PDF (A4) - 43.4Mb
Man Pages (TGZ) - 296.6Kb
Man Pages (Zip) - 401.9Kb
Info (Gzip) - 4.3Mb
Info (Zip) - 4.3Mb
Excerpts from this Manual

MySQL 8.0 Reference Manual  /  MySQL Data Dictionary  /  Data Dictionary Limitations

16.8 Data Dictionary Limitations

This section describes temporary limitations introduced with the MySQL data dictionary.

  • Manual creation of database directories under the data directory (for example, with mkdir) is unsupported. Manually created database directories are not recognized by the MySQL Server.

  • DDL operations take longer due to writing to storage, undo logs, and redo logs instead of .frm files.