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UNIX System Servicesplanning z/OS Version 2 Release 3 UNIX System Services Planning IBM GA32-0884-30 Note Before using this information and the product it supports, read the information in “Notices” on page 409. This edition applies to Version 2 Release 3 of z/OS (5650-ZOS) and to all subsequent releases and modifications until otherwise indicated in new editions. Last updated: 2019-03-26 © Copyright International Business Machines Corporation 1996, 2018. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents List of Figures...................................................................................................... xv List of Tables......................................................................................................xvii About this document...........................................................................................xix Using this document..................................................................................................................................xix z/OS information........................................................................................................................................xix Discussion list.......................................................................................................................................xix How to send your comments to IBM.....................................................................xxi If you have a technical problem................................................................................................................xxi Summary of changes..........................................................................................xxii Summary of changes for z/OS UNIX for Version 2 Release 3 (V2R3)..................................................... xxii Summary of changes for z/OS UNIX for Version 2 Release 2 (V2R2) as updated March, 2016........... xxiv Summary of changes for z/OS UNIX for Version 2 Release 2 (V2R2).................................................... xxiv z/OS Version 2 Release 1 summary of changes.......................................................................................xxv Chapter 1. Introduction to z/OS UNIX.................................................................... 1 The API interface......................................................................................................................................... 1 The interactive shell interface..................................................................................................................... 1 Interacting with elements and features of z/OS......................................................................................... 2 Workload Manager (WLM)...................................................................................................................... 3 WebSphere Application Server Dispatcher............................................................................................3 System Management Facilities (SMF)....................................................................................................4 XL C/C++ compiler..................................................................................................................................4 Language Environment...........................................................................................................................4 DFSMS.....................................................................................................................................................4 Security Server (RACF)........................................................................................................................... 4 Resource Measurement Facility (RMF).................................................................................................. 4 System Display and Search Facility (SDSF)........................................................................................... 5 Time Sharing Options Extensions (TSO/E).............................................................................................5 Communications Server......................................................................................................................... 5 Interactive System Productivity Facility (ISPF)..................................................................................... 5 Network File System (NFS).................................................................................................................... 5 z/OS File System (zFS)............................................................................................................................5 Hardware considerations for z/OS UNIX.....................................................................................................5 Requirements for accessing kernel services using TSO/E..........................................................................6 Tasks that z/OS UNIX application programmers do................................................................................... 8 Administrative tasks using the ISPF shell................................................................................................... 9 Chapter 2. Installing z/OS UNIX...........................................................................11 Methods of installing z/OS UNIX............................................................................................................... 11 Installing z/OS UNIX for ServerPac customers................................................................................... 11 Installing z/OS UNIX for CBPDO customers........................................................................................11 Establishing an /etc file system for a new release....................................................................................12 Chapter 3. Customizing z/OS UNIX.......................................................................13 Setting up kernel services in minimum mode...........................................................................................13 Setting up kernel services in full function mode.......................................................................................13 Setting up for full function mode......................................................................................................... 13 Checking the mode of the kernel in a running system..............................................................................14 Evaluating virtual memory needs..............................................................................................................14 iii Using extended common service area (ECSA).................................................................................... 15 Extended system queue area (ESQA).................................................................................................. 15 Predicting and limiting ESQA usage.....................................................................................................16 Reducing the amount of ESQA used by fork() processing...................................................................18 Reducing the amount of ESQA needed to support servers.................................................................18 Prioritizing UNIX work on your system......................................................................................................18 Define service classes..........................................................................................................................18 Define classification rules.................................................................................................................... 19 Defining the BPXPRMxx members in IEASYSxx........................................................................................20 Customizing the BPXPRMxx member of SYS1.PARMLIB..........................................................................20 Checking the BPXPRMxx syntax.......................................................................................................... 21 Defining file systems............................................................................................................................ 24 Defining system limits.......................................................................................................................... 27 Defining system features..................................................................................................................... 33 Customizing other members of SYS1.PARMLIB....................................................................................... 38 ALLOCxx ...............................................................................................................................................38 COFVLFxx .............................................................................................................................................38 CTnBPXxx .............................................................................................................................................38 IEADMR00 ........................................................................................................................................... 40 IKJTSOxx ............................................................................................................................................. 40 SMFPRMxx ..........................................................................................................................................
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