cjscol is correct. The compatibility guide applies to SSO for the same settings as vCenter Server 5.1.
You will find the needed scripts to set up the database on the installation media in the Single Sign On folder. You have to pay some attention as there are some unneeded scripts in there as well.
You just want to use the setuptablespaces and setupusers ones in that order. Do not use the createschema one as this will abort the installation as the installer expects not to find a schema even on a prepared database.