z/OS is the latest in a long history of names for the high-end IBM mainframe operating system that began as OS/360 in the mid-1960s on the System/360. The most recent previous names were OS/390 and MVS.
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IBM home page for zSeries/Operating System (z/OS). Information on the latest version with links to an overview, recent announcements, software, migration and installation, news, support, downloads, education, library and ease of use issues. z/OS replaced OS/390 (which replaced MVS) when IBM eserver zSeries 900 (z900) replaced System/390 enterprise servers (mainframes).
Bill's Big Iron Page
Both links and original material covering common programming problems in the z/OS environment. By Canadian Bill Lalonde.
DB2 for z/OS and OS/390
IBM home page for Database 2 Universal Database (DB2 UDB). Information on associated products and links to features and benefits, system requirements, library, success stories, news, downloads, events, education, services and support. DB2 is a relational database management system (DBMS).
IBM home page for Data Facility Sort (DFSORT). Includes links to product details, publications, support and downloads. DFSORT is sort/merge software with utility capabilities such as data analysis, conversion and reporting.
DOCWEB: The CNS Documentation System
Instruction manuals, Frequently-Asked Questions (FAQs) and News for students and other users of the mostly-mainframe University of Florida (UF)Computing and Networking Services (CNS).
IBM z/OS Consolidated Service Test (CST) and the Recommended Service Upgrade (RSU)
Integrated testing of an older Program Update Tape (PUT) level with hipers and PE's from a more recent PUT level for specified operating system, database and teleprocessing monitor versions.
IBM home page for Information Management System (IMS). Information on the family of software with links to a library, success stories, news, events, education, services and support. IMS is a transaction processing system (IMS/TM), a hierarchical database (IMS/DB), data management tools and connectors.
IMS Glossary of Terms and Acronyms
Common technical terminology used to describe concepts within IMS/TM and IMS/DB. From IBM.
LDW's Quick and Dirty MVS Page
Leonard Woren's favourite z/OS software and links.
LE: Language Environment
The IBM common run-time environment for popular programming languages.
Help Boards provide question and answer discussion threads on z/OS application programming, databases, utilities, JCL, Middleware including CICS, IMS, TSO, ISPF, data management and problem determination. There are also links to IBM manuals.
On August 9, 1972, D.A. Jardine wrote this humorous obituary for Operating System/360 (OS/360), the original ancestor of z/OS.
OSdata.com on MVS
A Web site that looks at operating systems, takes a look at MVS, now officially known as z/OS.
IBM home page for Resource Access Control Facility (RACF) security software. Introduction with links to a technical overview, news, downloads, user groups, past and future presentations, migration, library, FAQs and education.
Books, education, technical reports, freeware and links of interest to those who support z/OS.
RMF: Resource Management Facility
IBM's performance measurement and management software.
SDSF: System Display and Search Facility
IBM software to view and control the JES2 queues, running batch jobs, started tasks, and on-line TSO users.
Provides z/OS-based mainframe application concepts, techniques and examples, with special emphasis on integration with the Internet. Hosted by a California consulting firm.
SMP/E: System Modification Program Extended
The software used to install and maintain z/OS software from IBM and many other software companies.
On-line newsletter of technical articles related to TSO and ISPF, with lots of REXX-related information. Includes some articles on the company's (Chicago-Soft) mainframe software products.
UNIX System Services
IBM resources for the full UNIX implementation built into z/OS.
UnXMIT Information Exchange
Details on how to write a program for operating systems other than z/OS that will read a z/OS Partitioned DataSet (PDS, also known as a Library) that been sent with TSO's TRANSMIT (XMIT) command.
Watson & Walker
Cheryl Watson specializes in z/OS tuning. This site offers access to some of her free reports and details on how to acquire her chargeable materials, including her Tuning Newsletter, CPU chart, classes on video, and BoxScore and GoalTender software.
Western Illinois University: StuMVS System
Student guides for TSO (ISPF), CICS, MVS QuickRef, AbendAid, local JCL standards and a small glossary.
Wikipedia OS/360 Encyclopedia Entry
Short article with many embedded links describing Operating System/360 (OS/360), the original ancestor of z/OS that was written as the operating system for high-end System/360 computers in the early 1960s.
z/OS Hot Topics Newsletters
Published twice annually by IBM for z/OS Systems Programmers, with one to five page technical articles. Available on-line in PDF format.
z/OS IBM Manuals
On-line access to manuals covering all components of z/OS. Requires no special reader, though it does simulate IBM BookManager.
IBM security features with and products for z/OS.
Last update:August 24, 2016 at 10:05:07 UTC