5647-A01 IBM OS/390 Version 2

IBM U.S. Sales Manual
Revised:  April 21, 2005.

Table of contents  Document options 
TOC Link IBM U.S. Product Life Cycle Dates TOC Link Technical Description
TOC Link Abstract TOC Link Planning Information
TOC Link Highlights TOC Link Publications
TOC Link Description TOC Link Security, Auditability, and Control
Printable version Printable version

IBM U.S. Product Life Cycle Dates
Program NumberVRMAnnounced AvailableMarketing Withdrawn Service DiscontinuedReplaced By
5647-A012.10.02000/05/162000/09/29 2002/12/172004/09/30 -
5647-A012.09.02000/02/292000/03/31 2000/09/142003/03/31 -
5647-A012.08.01999/02/221999/09/24 2000/03/162002/09/30 -
5647-A012.07.01998/08/181999/03/26 1999/09/092002/03/31 -
5647-A012.06.01998/02/241998/09/25 2000/06/152002/03/31 -
5647-A012.05.01997/09/091998/03/27 1998/09/032001/03/31 -
5647-A012.04.01997/09/091997/09/26 1998/03/122001/03/31 -

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(For IBM US, No Longer Available as of December 17, 2002)

(For IBM US, Program Services Discontinued as of September 30, 2004)

One of the major breakthroughs in enterprise operating system software has been OS/390. OS/390 represents a broad and rich base of functionality. OS/390's integrated set of over 75 products makes it the platform of choice for developing and implementing mission-critical applications. The latest release of OS/390 Version 2 adds even more industry-leading function and performance.

Before your customer can do any transactions on the Internet, like make plane reservations, pay a bill, or trade a stock, your company must connect critical business systems directly to its customers, employees, and partners via intranets, extranets, and over the Web. IBM has created the e-business cycle to help companies dramatically improve key business processes using Internet technologies. OS/390 continues to support this model with Release 10.
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For OS/390 customers, IBM offers a rich set of choices in the areas of application development, deployment and maintenance. These choices have been expanded by a recent announcement: the S/390 platform now supports Linux for S/390.

IBM's continued long-term commitment to OS/390 is not altered by this new Linux direction. S/390 customers are offered additional opportunities to leverage their OS/390 investments through Linux. New doors are opening for OS/390 customers to bring Linux-centric workloads to the platform.

The current IBM S/390 strategy supports four models of application sourcing:

  • OS/390 - Traditional
  • OS/390 - Unix System Services
  • Linux for S/390
  • Java, Enterprise Java Beans (EJB), and CORBA


OS/390 is constantly being extended and enhanced to facilitate traditional application sourcing on the platform. In Release 10, elements of OS/390 such as Language Environment (R) and Resource Measurement Facility (RMF(TM)) are being augmented in alignment with IBM's application sourcing vision.

OS/390 Unix System Services

Unix System Services builds on the core strengths of OS/390 and extends these strengths to the Unix-based applications executing on S/390. In addition, Unix-skilled resources can begin to leverage the extensive data and applications resident on the S/390 platform today.

Linux for S/390

Separate from the OS/390 product, Linux for S/390 can execute in one of three modes:

  • S/390 Native
  • S/390 LPAR
  • VM Guest

Linux for S/390 offers S/390 customers an open operating system executing on super-reliable hardware that can be centrally managed. In this model, the OS/390 infrastructure is leveraged, not displaced, as evident by IBM's initial rollout of DB2 Connect for Linux on S/390.

For more on Linux for S/390 visit:

Java, EJB, and CORBA

Separate from the OS/390 product, WebSphere Application Server Enterprise Edition offers S/390 customers the ability to deploy Enterprise Java Beans and CORBA Business Objects on the platform. Also, IBM now offers Java 2 technology on OS/390, via the IBM Developer Kit for OS/390, Java 2 Technology Edition.

For more on WebSphere Application Server visit:

Release 10 offers:

  • Ease in porting C and C++ applications to S/390 through Extra Performance Linkage

  • Application development flexibility through downward compatibility of Language Environment (R)

  • Better security in the network operating environment and the TCP/IP environment

  • Increased flexibility in data storage and management

  • Standard workstation access to SAM, PDS(E) and VSAM files

  • Easier system management through enhanced performance reporting

  • Wizard technology, multimedia instructional animations, and Automatic Alter support to advance ease-of-use

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OS/390 is IBM's integrated solution for an open system platform that provides broad functionality for almost every aspect of computing. Version 2 and its family of releases build upon the value of Version 1 and give you the power and functionality to transform your business challenges into business opportunities. Version 2 Release 10 of OS/390 supports secure e-business on the Internet, server integration and consolidation, and enhanced application enablement with leading-edge technology. It is comprised of elements below. (OS/390 elements that are also available as stand-alone products are listed with the release level used in OS/390.)

OS/390 Version 2 Release 10 Product Content

OS/390 Version 2 Release 10 elements are listed below. OS/390 elements that are also available as stand-alone products are listed with the release level used in OS/390.

  • System Services
    • MVS/ESA SP (1)
      • Base Control Program (BCP) (1)
      • JES2 (1)
    • ESCON Director support (1)
    • MICR/OCR support (1)
    • Bulk Data Transfer (BDT) base (1,2)
    • DFSMS (1)
    • EREP/MVS Version 3 Release 5
    • High Level Assembler
    • ICKDSF Release 16
    • ISPF (1)
    • TSO/E (1)
    • 3270 PC File Transfer Program Version 1.1.1
    • FFST/ESA Version 1 Release 2 (1)
    • TIOC (1)

  • Systems Management and Security
    • HCD (1)
    • SMP/E (1)
    • Tivoli Management Framework for OS/390 (Tivoli Management Framework level 3.6) (Limited DES 56 bit)
      • Tivoli Management Agent

  • Cryptographic Services
    • Cryptographic Services
      • ICSF (1)
      • Open Cryptographic Services Facility (RC2/RC4/RC5 40-56 bit, DES 56 bit) (1)
      • System SSL (RC2/RC4, DES through 56 bit) (1)

  • Application Enablement Services
    • C/C++ IBM Open Class Library (4)
    • Language Environment (Limited DES) (1)
    • DCE AS (1)
    • Encina Toolkit Executive (1)

  • Distributed Computing Services
    • Network File System Feature (1)
    • DCE Base Services (OSF DCE level 1.1) (Limited DES) (1)
    • Distributed File Service (DFS support at OSF DCE level 1.2.2) (DES 56 bit) (1)

  • Communications Server
    • IBM Communications Server for OS/390 (1,3)
      • SNA/APPN Services (Includes VTAM(R)) (Limited DES) (1)
      • Multiprotocol/HPR Services (Includes AnyNet(R)) (1)
      • TCP/IP Services (Includes TCP/IP for MVS) (Firewall CDMF DES 40 bit, SNMPv3 DES 56 bit, IP Sec DES 56 bit) (1)

  • e-business Services
    • IBM HTTP Server for OS/390 (uses System SSL)
    • Text Search (formerly NetQuestion)

  • LAN Services
    • LANRes (Limited DES)(1)
    • OSA Support Facility for OS/390 Version 2 Release 1

  • OS/390 UNIX System Services
    • OS/390 UNIX System Services Application Services (1)
      • OS/390 UNIX System Services Shell and Utilities (1)
      • OS/390 UNIX System Services Debugger (1)

  • Softcopy Publications Support
    • BookManager READ R3 (1)
    • BookManager BookServer Version 2.2(1)
    • GDDM Version 3 Release 2 (including PCLK and OS/2 Link)

You have the ability to replace an OS/390 base function with a commercially available product which provides a similar function. Contact an IBM representative for qualification and pricing information. All OS/390 integrated testing results and performance claims are voided with such replacement.

OS/390 delivers optional features that have a high affinity to the base OS/390 system.

  • System Services
    • JES3 (1)
    • Bulk Data Transfer (BDT) File-to-File (1)
    • Bulk Data Transfer (BDT) SNA NJE (1)

  • Systems Management

    Note: The DFSMS features are packaged in combinations.

    • DFSMSdss, hsm
    • DFSMSrmm
    • DFSMSdss
    • RMF (1)
    • SDSF (1)
    • HCM (1)

  • Cryptographic Services
    • Open Cryptographic Services Facility Security Level 3 (TDES, DES, RC2/RC4/RC5) (1,3)
    • System SSL Security Level 3 (RC2/RC4,TDES) (1,3)

  • SecureWay Security Server
    • DCE Security Server at OSF DCE level 1.2.2 (Limited DES) (1)
    • Open Cryptographic Enhanced Plug-ins (uses OCSF) (1)
    • RACF (DES, RC2 40 bit) (1)
    • Firewall Technologies (DES) (1)
    • LDAP Server (uses System SSL) (1,5)
    • Network Authentication and Privacy Service (DES) (1,7)

  • Application Enablement Services
    • C/C++ with Debug Tool (1,4)
    • C/C++ without Debug Tool (1,4)
    • DFSORT Release 14 (1)
    • GDDM-PGF Version 2 Release 1.3
    • GDDM REXX Version 3 Release 2
    • HLASM Toolkit
    • Infoprint Server for OS/390 (1)
      • IP PrintWay (1) and NetSpool (1)
      • OS/390 Print Interface (1)

  • Communications Server
    • IBM Communications Server Security Level 1 (1,6)
    • IBM Communications Server Security Level 2 (DES) (1,6)
    • IBM Communications Server Security Level 3 (TDES) (1,3)
    • IBM Communications Server Network Print Facility (1)

  • e-business Services
    • IBM HTTP Server NA Secure (1,8)

  • Softcopy Publications Support
    • BookManager BUILD Release 3 (1)


(1) Functional enhancements for items have already or will be made available only through OS/390 and not through additional releases or versions of these products or features.

(2) One or both of the BDT optional features (file-to-file or SNA NJE) must be ordered and installed in order to use the BDT function shipped with the base.

(3) Items have export considerations.

(4) Retroactive to OS/390 Version 1 Release 3, the C/C++ IBM Open Class Library component of the C/C++ Optional Feature is licensed with the OS/390 base operating system and can be used without enabling the C/C++ Optional Feature.

(5) The LDAP Server component of SecureWay Security Server Optional Feature is licensed with the OS/390 base operating system and can be used without enabling the SecureWay Security Server Optional Feature.

(6) The IBM Communications Server Security Level 1 and Level 2 features are mutually exclusive. Only one needs to be ordered to obtain additional security function over what is provided in the OS/390 base.

(7) The Network Authentication and Privacy Service component of SecureWay Security Server Optional Feature is licensed with the OS/390 base operating system and can be used without enabling the SecureWay Security Server Optional Feature.

(8) If ordering IBM HTTP Server NA Secure, System SSL Security Level 3 should be ordered to obtain additional security function over what is provided in the OS/390 Base.

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Technical Description
TOC Link Operating Environment TOC Link Hardware Requirements TOC Link Software Requirements

Operating Environment

Hardware Requirements

Any processor that supports Enterprise Systems Architecture (ESA) with the required architectural enhancements identified at:

enables you to run basic OS/390.

  • Models of the S/390 Parallel Enterprise Servers - Generation 5 and Generation 6

  • S/390 Parallel Transaction Servers Releases 2 through 4

  • All models of the S/390 Multiprise 3000 or Multiprise 2000

  • All S/390 Integrated Servers

  • PC Server System/390 or RS/6000 with System/390 Server-on-Board

Additional hardware may be required for certain, specific functions.

  • Coupling Facility - A Coupling Facility is the common system focal point, in a Parallel Sysplex environment, for data sharing across multiple S/390 systems. It is a function that is implemented in S/390 hardware and Coupling Facility Control Code (CFCC). A CF is established in a S/390 PR/SM logical partition dedicated to running CFCC. A Coupling Facility partition can exist on a stand-alone dedicated system such as a 9674 C0x or 9672 G5 R06 model or can run in a partition of a S/390 9672 General Purpose Server or ES/9000 9021 711-based system. For additional information on the 9672 G6 Servers, refer to Hardware Announcement 199-115, dated May 3, 1999.

  • Coupling Facility Channels: In a Parallel Sysplex environment, these channels are required to connect between a Coupling Facility (CF) and production OS/390 or MVS/ESA logical partitions running in multiple S/390 systems. Today there are five types of Coupling Facility Channels or coupling links available depending on the machine type and model:
    • Inter System Coupling (ISC) links
    • HiPerLinks
    • Integrated Cluster Bus (ICB) links
    • Internal Channel (IC) links
    • Integrated Coupling Migration Facility (ICMF) Links

    The choice of links is dependent on configuration, distance, and performance requirements. Coupling links, of at least one variety, are available on the S/390 Parallel Enterprise Server, the ES/9000 9021 711-based and the ES/9000 9121 511-based systems. For the latest information on the 9672 S/390 G6 Servers, refer to Hardware Announcement 100-050, dated February 29, 2000.

  • Sysplex Timer: A Sysplex Timer is required to synchronize the time- of-day (TOD) clocks in all the CPCs attached to the coupling facility (except for a single CPC Parallel System).

  • ICSF: The Triple DES function requires at least a 9672 G5 Server

    For Generation 5 and 6 Servers, the Triple DES support is included in the product.

    Note: Triple DES is exportable to all customers except governments. It may not be exported to governments except pursuant to an appropriate export license.

    An S/390 G5 Server or higher is required if a customer wishes to use Double-Key MAC.

Software Requirements

The OS/390 base is an IPL-able system. There are no hard requirements in order to IPL. Specific functions may require additional products not included in OS/390 base, or in the optional features of OS/390. Refer to information provided below, as well as "OS/390 Planning for Installation" (GC28-1726) for a listing of specific PTF numbers.

Minimum Levels of Related Products

In order to determine the minimum levels of IBM stand-alone products that run with OS/390 Version 2 Release 10, refer to "OS/390 Planning for Installation" (GC28-1726). This publication is also available at the URL:

Print Services Facility: If you decide to use the Print Services Facility (PSF) with OS/390 Version 2 Release 10, the minimum required level is PSF for OS/390 Version 3 (5655-B17).

Java for OS/390: OS/390 Release 10 requires Java for OS/390 at the 1.1.8 level or later. Java for OS/390 includes support for IEEE 754 native instruction execution, exploitation of native operating system services for security enhancements, and continued performance enhancements. For complete information, visit the Java for OS/390 Web site at:

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Planning Information

Customer Responsibilities

Not available.
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For a list of the publications available for OS/390, visit the OS/390 Library Web Site at the following URL:

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Security, Auditability, and Control

Data security and auditability in the OS/390 environment are enhanced by the functions available in the RACF part of the optional SecureWay Security Server for OS/390 feature.

B1/C2 Security

The most recent MVS system formally evaluated by IBM and the US government using the B1 Trusted Computer Systems Evaluation Criteria (TCSEC) comprised MVS/ESA 3.1.3, RACF 1.9, and selected other MVS components in a non-networking configuration. Since then MVS and the evaluated components have undergone many changes. MVS has grown to include Parallel Sysplex technology and UNIX functionality and has further evolved into OS/390 with the incorporation of many new components. Over the years the nature of networking has changed and the importance of networking has grown, with increased usage of TCP/IP communications and connection of OS/390 systems to the Internet and extranets to conduct e-business. Although IBM has not undertaken further formal security evaluations of OS/390, we maintain our strong focus on security during the design, development and testing of OS/390. While we continue to consider the B1-related requirements when making enhancements to the key components from the earlier-evaluated package, for the newer components of OS/390 we have focused mainly on those security aspects that we consider more important to our commercial customer set: the functions of user authentication, access control, auditing, and object reuse required by the C2 level of the TCSEC. Also, IBM continues its security commitment with its Security APAR process, described below.

Security APARs

IBM accepts Security APARs for OS/390. Security APARs are for reporting problems in existing security mechanisms where the problem descriptions do not meet the precise definition of system integrity, but do constitute an exposure to the security of the system as a whole or to an IBM product which runs on the system. Originally announced in Software Announcement 289-581, dated October 24, 1989.


(R), (TM), * Trademark or registered trademark of International Business Machines Corporation.

** Company, product, or service name may be a trademark or service mark of others.

UNIX is a registered trademark in the United States and other countries licensed exclusively through X/Open Company Limited.
 © IBM Corporation 2005.
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