IBM Mainframe Operating Systems

IBM Mainframe Operating Systems

IBM mainframe computers are servers based on the processor instruction set of the System/360 introduced in the mid-1960s, much as today's Intel computers and processors are based on the 8086 used in the original 1981 IBM PC. This category covers the operating systems (OSs) and software products that run on IBM mainframes. Any sites also including mainframe hardware-related information belong in a subcategory of Computers/Hardware/Systems/IBM. On this page, OSs are arranged in two groups and levels: 1) Top group: issues spanning multiple IBM OSs. 2) Bottom group: specific IBM OSs, individual instances; there is only one OS of this name/type, with its own category.

Top: Computers: Software: Operating Systems: Mainframe: IBM

Editor's Picks:

Operating Systems for IBM Mainframe Servers

- IBM starting point for mainframe OSs. Links to home page of each OS, with brief descriptions: z/OS, z/OS.e, Linux on zSeries, z/VM, TPF and z/VSE.

Mainframes.com - Mainframe programming information, including a large dictionary and links to downloads and manuals.
Tivoli Glossary - Terms used by IBM subsidiary Tivoli. Glossary can be used on-line or downloaded in Adobe Acrobat .pdf file format.
NaSPA: Network and Systems Professionals Association - User group. Primary focus is z/OS systems programming.
CICS: Bob Yelavich - CICS technical information from a retired IBM expert.
MTS by Mark Riordan - A collection of information and links on MTS and MERIT (Michigan Educational and Research Information Triad) Network, including the MTS Help section with its description of MTS commands and related user documentation.
CICS - IBM home page for Customer Information Control System (CICS). Includes links to support, download, case studies, library, services, events and education. CICS is a transaction processing teleprocessing monitor that runs on z/OS and VSE/ESA, though there
RACF Glossary - A selection of terms, with definitions, taken from an appendix found in most IBM RACF manuals.
Jaqui's Papers & Presentations - 10 years of technical conference papers and presentation notes by Jacqui Lynch of Circle4 Consulting. Performance, capacity planning and security, including VSAM, z/OS, Linux, TCP/IP and storage management.
Mike Murach's Mainframe Books - Publisher of books on COBOL, DB2, CICS, z/OS JCL, TSO, VSAM, IMS, and VSE/ESA. Sample chapters and code can be downloaded.
Mainframe VM & VSE Page - Links compiled by Johan van Arendonk.
Mainstar Software: Resources - Although focused on z/OS storage management, many of the VSAM documents, for example, also apply to VSE/ESA and z/VM. White papers and other articles, much of it vendor-neutral.
IBM End of Support Dates - IBM's official listing of the announced end of support date, if any, for each of their software products.
LookAt Message Help Facility - IBM message lookup for z/OS, OS/390, z/VM and VSE/ESA. By operating system version number.
WAVV: World Alliance of VSE and VM - User group spun off from GUIDE in 1995 and similar to SHARE, with annual conference aimed mainly at VSE/ESA and z/VM systems programmers.
TPF: Transaction Processing Facility - IBM home page for TPF. Despite the name, TPF can be run as a stand-alone operating system on IBM mainframes.
CICS Central - Information, reviews and discussion about IBM's CICS.
Technical IT Audit, Euro and Security Articles - Includes many mainframe-related articles. From Audit Serve.
DB2 Server for VSE & VM - IBM home page for Database 2 running on z/VM and VSE/ESA. Overview and associated products, with links to features and benefits, system requirements, success stories, news, events, education and support. Formerly named SQL/DS, DB2 is a relational databa
Transaction Servers and Tools eNews - An IBM monthly publication focused almost entirely on CICS.
Sysprog.net - News, programming tips and technical information for z/OS and mainframe Linux applications and systems programmers.
TPF Family Libraries - Access to the IBM TPF Product Information Center, on-line manuals for TPF, TPFDF, EOCF/2, TPF Operations Server and IIOP Connect for TPF, and order information for CD-ROM and printed manuals.
DITTO/ESA - IBM home page for Data Interfile Transfer, Testing, and Operations Utility for ESA (DITTO/ESA). Overview of features with links to support, news, library and more information. DITTO runs on VSE/ESA, z/VM and z/OS.
WebSphere - Large IBM product family encompassing middleware and other application delivery software that provides Web-based access to an organization's application software. Including WebSphere MQ, the former MQSeries.
CICS Internet Connectivity - Describes options available for connecting CICS to the Internet.
LISTSERV at the University of Georgia - RACF-L: RACF Discussion List
IBM-Main FAQ: Frequently-Asked Questions - Common questions and answers about the IBM-Main discussion list.
VSAM Demystified - An IBM redbook covering basics, performance, recovery and management, with sample code in an appendix. Viewable on-line or downloadable as an Adobe Acrobat .pdf file.
Mainframe Programming - Muraleedharan's links and abstracts of articles on systems software topics, including z/OS, DB2, CICS, DFSMS and RACF.
IBM ShopzSeries - An on-line tool (registration required) for IBM z/OS, z/VM, z/VSE customers to order tailored product and service packages, review their software licenses and plan for future upgrades.
VTAM for z/VM and VSE/ESA - IBM home page for Virtual Telecommunications Access Method (VTAM); the z/OS version is part of Communications Server. Includes links to the latest version's announcement letter, documentation and storage estimates.
IBM Storage Software - IBM home page for mainframe storage software, including DFSMS, DFSORT and DataCore SANSymphony, with a link to the TotalStorage Software Roadmap.

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