Catalog Address Space Support
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07
This article describes a method for utilizing the cross memory feature of the IBM Multiple Virtual Systems (MVS) operating system to locate catalog management in its own private address space and utilize a subtask structure in the catalog address spec (CAS) to process concurrent requests for catalog services. Catalog management under the IBM MVS operating system is provided by the Virtual Sequential Access Method (VSAM) and Data Facility Extended Function (DFEF) and is accessed by Supervisor Call (SVC(26)). The existing code, control blocks, buffers and data structures reside in MVS common storage area (CSA), and not in its own private address space.