Hi,

You are already getting answers in the MOSC thread you open.

Keeping it short: yes you can have as many installs as you want in a single server as long as they don't overlap on disk and that running environments don't conflicts in ports (so same ports are fine if the 2 or more instances aren't running at the same time).

How to manage port conflicts? Use different port numbers, there isn't a management needed because you should aim for not having a conflict. OBIEE has a given number of ports it needs, the install is a bit excessive by using a large range (which makes me hope it implements some 'sensing' mechanism to avoid using a port already in use by another process, but this should be tested...).