Symptoms

When upgrading or installing Confluence, a message appears:

The license you entered is only valid for a clustered installation of Confluence. You will need to install the clustered edition of Confluence to use this license.

Cause

Due to changes in Oracle's Coherence license scheme, Confluence Clustered is distributed in a different package. This has been introduced in version 3.0.1.

Resolution

Download the proper clustered distribution. Click on 'show all' from the downloads page.