Managing OS/400 with Operations Navigator V5R1 Volume I: Overview and More

5.5. Subsystems

Use this folder to start and stop subsystems and manage jobs running within an active subsystem.

An OS/400 subsystem is where work (jobs) are managed. All jobs (and any associated threads), except for the subsystems themselves and certain “system jobs”, run within an active subsystem.

A subsystem is a single predefined operating environment through which the system coordinates work flow and resource utilization according to:

• One or more memory pools used by the subsystem (“shared pools” can be shared with other subsystems).

• The maximum number of jobs the subsystem can manage at the same time.

• Subsystem “entries” that control the type of work that can be “given to” the subsystem. Entries include job queues, autostart job, pre-started ...