ABCs of z/OS System Programming Volume 1

1 RedbooksFront coverABCs of z/OSSystem ProgrammingVolume 1 Lydia ParzialeLuiz FadelStanley JonInternational Technical Support OrganizationABCs of z/OS System Programming Volume 1 November 2017SG24-6981-04 Copyright International Business Machines Corporation 2014, 2017. All rights to Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP ScheduleContract with IBM Edition (November 2017)This edition applies to version 2 release 3 of IBM z/OS (product number 5650-ZOS) and to allsubsequent releases and modifications until otherwise indicated in new : Before using this information and the product it supports, read the information in Notices on page vii. Copyright IBM Corp. 2014, 2017. All rights .. viiTrademarks .. viiiPreface .. ixAuthors ..xNow you can become a published author, too.

2 XComments welcome.. xiStay connected to IBM Redbooks .. xiChapter 1. The World of IBM Z.. IBM Z hardware configuration .. Parallel Sysplex.. Coupling facility .. CF structure encryption.. Cryptographic hardware .. z/OS services .. ICSF .. z/OS security .. SAF .. RACF .. Data Facility Storage Management Subsystem .. z/OS Data Set Encryption .. IBM Health Checker for z/OS .. Health Checker for z/OS processing.. IBM z/OS Management Facility.. 15 Chapter 2. The z/OS System programmer.. The role of the System programmer .. z/OS System programmer management overview .. The System programmer and z/OS operations .. Planning .. Daily operations .. Ordering z/OS .. z/OS delivery options .. SMP/E Internet Service Retrieval.

3 25 Chapter 3. TSO/E, ISPF, JCL, and SDSF.. TSO/E .. TSO/E highlights .. TSO/E customization .. TSO/E logon procedure .. Line mode TSO/E .. TSO/E languages .. Interactive System Productivity Facility .. Using ISPF .. ISPF structure .. Data set types supported .. ISPF components .. ISPF primary option menu .. 42iv ABCs of z/OS System Programming Volume Job control language .. JCL introduction .. JCL streams and jobs .. Job Entry Subsystems .. Job Entry Subsystem 2 .. Job Entry Subsystem 3 .. System Display and Search Facility .. SDSF: Panels hierarchy .. JES2 SDSF Primary Option Menu .. SDSF: JES3 panel hierarchy .. JES3 SDSF Primary Option Menu .. 58 Chapter 4. z/OS maintenance concepts .. Aspects of software management.

4 Why you should manage software .. How current your software should be .. An approach for keeping your environment current .. Installation strategy .. Implementation strategy .. Concurrent maintenance.. Software management tasks.. Environment design .. Installation decision.. Installation plan .. Installation .. Testing .. Implementation .. The z/OS software management cycle .. How current your software should be .. The risk of not changing software .. The risk of changing software .. The minimum risk point .. System Modification Program Extended (SMP/E) .. 66 Chapter 5. z/OS storage concepts.. Processor storage overview .. The concept of virtual storage .. Processor storage concept .. How virtual storage works .. Dynamic address translation.

5 Address space .. Storage initialization .. CPC memory .. Auxiliary storage .. Processing unit .. Virtual storage details .. Virtual storage terminology .. Page data sets .. Pages to auxiliary storage (paging).. Storage management .. Paging algorithms .. z/Architecture address space .. Virtual storage and 64-bit addressability .. 77 Contents zSeries mainframes and 64-bit addressing.. Region tables and segment tables .. The address space concept .. Data spaces .. Addressing mode and residency mode.. Storage managers.. Paging and swapping .. IBM Virtual Flash Memory .. Storage-class memory on IBM Z Virtual Flash Memory .. The common virtual storage area .. Common area below the 16 MB line .. z/OS nucleus.. System queue area.

6 Common service area .. Link pack area.. Address space private area .. 64-bit address space map .. Region tables .. Page and segment tables .. User private area .. Segment tables and page tables in 31-bit addressing .. Segment tables and page tables .. Virtual address translation.. Address size .. 31-bit virtual addresses .. 64-bit virtual address.. Translating a 64-bit virtual address .. 1 MB and 2 GB Large Pages .. Multiprogramming and multiprocessing .. Multiprogramming .. Multiprocessing .. Program compile, link edit, and execution .. Program compile, link edit, and execution .. Pervasive Encryption .. z/OS Encryption Capabilities.. z/OS DFSMS and pervasive encryption .. DB2 and IMS and z/OS data set encryption.

7 98 Related publications .. 99 IBM Redbooks .. 99 Other publications .. 99 Online resources .. 100 How to get IBM Redbooks .. 100 Help from IBM .. 100vi ABCs of z/OS System Programming Volume 1 Copyright IBM Corp. 2014, 2017. All rights information was developed for products and services offered in the US. This material might be available from IBM in other languages. However, you may be required to own a copy of the product or product version in that language in order to access it. IBM may not offer the products, services, or features discussed in this document in other countries. Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used.

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