After standing up a new policy server, the following error is shown in the smps.log upon startup:
Failed to create the Management Command Listener
The policy server had been previously started by root instead of the intended smuser. This resulted in three files in the /tmp folder that smuser could not delete/overwrite/edit and prevented a clean initialization. These temp files were easy to identify as all three had 'siteminder' in their file names.
Release : 12.8.03
Component : SITEMINDER -POLICY SERVER
Deleting these three temp files allowed the policy server to start without errors.