z/OS JCL - Boot Camp

What you will learn

On successful completion of this course you will be able to:

• state the purpose of each z/OS job control statement
• code JCL statements to access disk and cartridge files
• describe and use the commonly used parameters
• correct syntax errors in JCL statements
• code in-stream procedures and override, nullify and add parameters
• appreciate the implications of SMS when using z/OS JCL
• code jobs to run on systems other than the local host
• code JCL statements to create PDSE library and data files
• code JCL to create VSAM data sets without IDCAMS
• use the OUTPUT statement more fully
• describe the function of various batch utilities
• code and execute nested procedures
• use the INCLUDE statement to ease JCL maintenance
• use the SET statement to resolve job wide variables
• describe how SET is used by z/OS when commands are issued to invoke jobs
• code and execute SORT.

Who Should Attend

Applications Programmers, Systems Programmers, Operations Analysts and Operators.

Prerequisites

The ability to use TSO/ISPF and a basic knowledge of z/OS and its file structure. These skills can be gained by attending the RSM courses TSO/ISPF Users' Workshop and z/OS Concepts & Facilities.

Duration

5 days

Fee (per attendee)

P.O.A.

This includes free online 24/7 access to course notes.

Hard copy course notes are available on request from rsmshop@rsm.co.uk

at £50.00 plus carriage per set.

Course Code

TMTQ

Contents

z/OS: Structure and Components

z/OS background and history; MVS main memory and virtual storage; MVS versions; Address space layout; Common area; Private area; Main components of z/OS; z/OS processing environments: On-line, TSO, ISPF, Batch; MVS spooling; Other program products and their functions.

Introduction to z/OS JCL

Basic job structure; Job stream processing; JCL output; JCL statement types; JCL statement format and coding rules; JES2 control statements; JES3 control statements; JCL error points.

The JOB Statement

The JOB statement overview; Accounting information - positional; Programmer's name - positional; Keyword parameters; Other keyword parameters; Example JOB statements.

The EXEC Statement

The EXEC statement; EXEC format - program; EXEC format - procedure; EXEC keyword parameters; Other EXEC keyword parameters; COND parameter; EVEN or ONLY; Example EXEC statements; EXEC statement summary.

Printing and In-stream Data

Print files & In-stream data; Printing: Examples, DEST, COPIES, DCB; Output statement; OUTPUT statement: Implicit, Explicit, Multiple output; Output statement parameters; Examples; OUTDISP parameter; In-stream data.

The DD Statement

The DD statement; DD parameters: DSN, DISP, UNIT and VOL; SMS considerations; DD statement summary: Existing catalogued dataset, Existing non-catalogued dataset.

The DD Statement - Working with Datasets

Dataset types; Sequential datasets; Partitioned Data Sets; VSAM datasets; BUFNO; Accessing existing datasets; Creating new non-VSAM datasets; Data Control Block parameters; SPACE parameter; Space allocation DSCBs; System Managed Storage: Disk datasets with SMS, Space allocation with SMS. DCB parameters with SMS; Creating VSAM datasets in JCL; Generation datasets; SMS GDG considerations; Stages in creating a generation dataset; Tape datasets; . LABEL parameter; DD statement summary; Creating a new dataset on disk - non-SMS; Creating a new tape dataset.

Further DD Considerations

JCL procedures; In-stream procedures; What a catalogued procedure cannot contain; Cataloguing a procedure; INCLUDE statement; Calling a procedure; Symbolic parameters; Examples of symbolic translation; Default parameters; Resolving symbolic parameters; SET statement; Modifying EXEC statement parameters; Modifying DD parameters; Concatenated datasets; Adding DD statements; Substitution prefixes; Using a standard COBOL compile/link/go procedure.

Conditional JCL Statements

The general construct; Name field; Relational-expression field; Relational-expression keywords; Comparison operators; Logical operators; NOT operator; Order of priority of operators; Parentheses; THEN and ELSE clauses; Contents of THEN and ELSE clauses; IF/THEN/ELSE/ENDIF and COND.

Common MVS Abend Codes

Problem handling; Program abends; Common MVS completion codes.

JES Control Statements

Introduction; Why have a Job Entry Sub-system?; JES historical requirements; JES2 versus JES3; JES2 processing overview; JES3 processing overview; Placement of JES2 statements; JES2 statement types; JES2 statement syntax; JES2 command statements.

JCL Command Processing

Introduction; Command authorisation; Internal Reader controls; z/OS MVS command authorisation; z/OS MVS command disposition; JES2 commands; z/OS MVS commands; z/OS command groups: INFO, I/O, CONS, MASTER, SYS; COMMAND statement; Sample exploitation; JES2 Command and Internal Reader.

Remote Batch Execution

Introduction; Local versus Remote definition; Local processing; Remote processing (Remote Job Entry - RJE); Remote processing (Network Job Entry - NJE); Sysplex; JES2 control statements: /*XEQ, /*ROUTE XEQ, /*ROUTE, /*XMIT; Security and Remote Job Execution; RACF overview; Propagation or not; JOB statement parameters.

Output Processing

Introduction; Positioning on a page; Control characters; Forms Control Block; Impact of JOB statement on output processing; Accounting Information; JOB statement keywords; JES2 statements: /*JOBPARM; /*OUTPUT, /*ROUTE; DD statement keywords; DCB parameter and output processing; OUTPUT statement; Implicit statements; Explicit statements; OUTPUT statement parameters; Output routing; Using DEST on the DD statement; Using multiple OUTPUT statements; Printing before JOB end; Setting output defaults; Output processing options.

Partitioned Data Set Extended (PDSE)

Introduction; 6.2 What is a PDS?; PDS disadvantages; What is a PDSE?; What are the advantages of a PDSE?; Types of PDSE; PDSE and BLKSIZE; PDSE concatenation; PDSE processing restrictions; Allocating a PDSE - IDCAMS; Allocating a PDSE via JCL; Migrating load modules to program objects.

z/OS DFP Utilities

What is a utility program?; Data Facility Product (DFP); DFP Utilities; DFP - system utilities; General overview; Standard DD statements; IEHINITT; IEHINITT control statement; IEHLIST; IEHMOVE; IEHPROGM; IFHSTATR; DFP - Data Set Utilities; General overview; Standard DD statements; IEBCOMPR; IEBCOPY; COPY operation; Partial copy; IEBDG; DSD statement; FD statement; REPEAT statement; CREATE statement; IEBEDIT; IEBGENER and ICEGENER; IEBIMAGE; IEBISAM; IEBPTPCH; IEBUPDTE; Access Method Services - IDCAMS.

z/OS DFSMSdss

Introduction; Positioning DFSMSdss; Dataset compression; Defragmentation; Full volume dumping; Partial volume dumping; Restoring; Migrating program objects.

Sub-system Interfacing

Introduction; What is a sub-system?; Where are sub-systems defined?; What is a Functional Sub-System?; Sub-system interface DD statements; CNTL statement; ENDCNTL statement; DD statement keywords; CNTL=; SUBSYS=; Examples of sub-system interface usage; PSF Channel Attached printer example; PSF TCP/IP example; Network printing example.

Using SORT

Introduction; Data Facility/Sort; How Sort works; Sort phases; Control fields; Sort operation; Control statements; JCL requirements; Messages; Syntax; Sort fields specification; MERGE field specification; MODS specification; INCLUDE/OMIT specification; RECORD specification; OUTFIL specification; ALTSEQ specification; OUTREC specification; SUM specification; OPTION specification; Common format codes for control fields.