Beginning with OpenEdge Release 12.0, OpenEdge Management is hosted on the Progress Application Server. Progress Application Server is a Tomcat Web server with Progress-specific configuration that enables OpenEdge Management to run independently of the AdminServer. This change also enables you to manage multiple local AdminServer instances in addition to remote AdminServer instances.

OEM runs as a stand-alone web application and it is not capable of managing any local or remote OE resources/system resources with out the AdminServer (local network resources are an exception). All the communication to the local/remote resources happens through the AdminServer. In order to manage and monitor any resources the AdminServer needs to be started.

For details, see OpenEdge Management AdminServer Configuration Upgrade.