IBM OS/390 User Manual

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.

The operating system environment that is called OS/390 consists of MVS/ESA SP
and its component products and functions.

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.

•

−

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

•

−

HCD

−

ICSF

−

SMP/E

−

SystemView for MVS Base

•

−

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

−

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Chapter 2. Sizing the Effort