Creating and Maintaining the Prerequisite Database

The Control-O/COSMOS Prerequisite database contains prerequisites for Control-O/COSMOS-controlled objects. Only one Control-O/COSMOS Prerequisite database can be defined.

When Control-O/COSMOS determines that an object’s current status does not match its desired status, Control-O/COSMOS checks the prerequisites for that object in the desired status.

The Control-O/COSMOS Prerequisite database determines whether or not an object can be brought to its desired status, and in this way controls:

• Sequence in which objects are activated during IPL.
• Sequence in which objects are deactivated during a shutdown.

Because Control-O/COSMOS can manage more than one Object database, prerequisites can describe dependencies between objects in the same or different Object databases.