There is a great support article on this exact topic here:
There are just a few caveats that need I need to point out:
1. Use the webha.sql file from the above link to create the ObjectServer database. There are two similar files on your DASH/JazzSM server after the install, but both are incorrect.
2. The instructions in the link for configuring WebSphere are all manual, through the WebSphere Admin Console. To make things more easily repeatable, I created a file with all of the Jython WebSphere administrative commands required. Here are the contents of that file: