IBM z/OS V2R2: Operations

REGIONX

This chapter describes the new REGIONX keyword on the JOB and EXEC JCL statements. It also describes the differences and similarities between the REGIONX and REGION keywords.

This chapter includes the following topics:

•2.1, “REGIONX overview” on page 6

•2.2, “Use of REGIONX” on page 6

2.1 REGIONX overview

To run their jobs and applications in controlled environments, users want more control over their below-the-line and above-the-line storage requests. Although the old REGION specification can be used to control memory usage, users cannot ...