2.2.1 The OS/390 Operating Environment
This section introduces the OS/390 operating environment. A publication entitled
OS/390 Introduction and Release Guide
, GC28-1725 is recommended for a better
understanding of OS/390. This book describes the information associated with
OS/390 including OS/390 books and books for participating elements.
2.2.1.1 OS/390 Product Content
The operating system environment that is called OS/390 consists of MVS/ESA SP
and its component products and functions.
Base Elements
As an example, OS/390 Version 2 Release 5 contains the base elements listed
below. Subsequent releases of OS/390 will contain similar components, their
replacements.
•
System Services
− MVS/ESA SP
− Base Control Program (BCP)
− DFSMSdfp
− EREP
− ESCON Director Support
− IBM High Level Assembler for MVS
− ICKDSF
− ISPF
− JES2
− MICR/OCR Support
− MVS/Bulk Data Transfer (BDT Base)
− TSO/E
− 3270 PC File Transfer Program
− FFST
− TIOC
•
Systems Management
− HCD
− ICSF
− SMP/E
− SystemView for MVS Base
•
Application Enablement
− Language Environment
− DCE Application Support
− Encina Toolkit Executive
− GDDM/MVS (includes PCLK and OS/2 Link)
− OS/390 Application Enabling Technology
− SOMobjects Runtime Library
− VisualLift for OS/390 Runtime Library
− C/C++ IBM Open Class Library
Chapter 2. Sizing the Effort 19
