Job queue entries in a subsystem description specify from which job queues a subsystem is to receive jobs. When the subsystem is started, the subsystem tries to allocate each job queue defined in the subsystem job queue entries.
For example, a job queue entry in the subsystem description QSYS/QBASE specifies that jobs can be started using the job queue QGPL/QBATCH. Jobs can be placed on a job queue even if the subsystem has not been started. When the subsystem QBASE is started, it processes the jobs on the queue. A subsystem description can specify the maximum number of jobs (batch or interactive) that can be processed at the same time. The number of jobs that can be active from any job queue is specified in the job queue entry.