Operating System Concepts › Major Features › Job Entry Subsystems

Job Entry Subsystems

z/OS uses one of the two available job entry subsystems (JES). Each system has its own method of specifying options. JES2 uses a data set called the HASP parameter file (HASPPARM). JES3 uses a data set commonly called the initialization deck (INIT deck). Both JES2 and JES3 must be considered separately from z/OS during an audit or security review.

Later sections of this guide explain how each of these facilities work and what audit, security, and control issues are apparent for each one. The System Review Checklist provides the detailed audit tests to perform in each area.