With the release of Confluence 2.10, MySQL 4.1.x is no longer supported and will not work by default. See the Supported Platforms topic for further details.

However, there is a workaround to enable MySQL 4.1.x with Confluence 2.10.

To enable MySQL 4.1.x with Confluence 2.10:

  1. When launching Confluence from the command line, add the following parameter: 
    -Dmysql4Compatibility=true
  2. This will enable MySQL 4.1.x to work with Confluence 2.10. Please note however, that use of this database will not be supported by Atlassian.