A780 Introduction to TSO and REXX APIs

Course Code: A-780
Recommended Duration: 2 Days

Benefits

"APIs" stands for "Application Programming Interfaces"; students who complete this course will be able to design and maintain applications using native TSO commands and the powerful REXX capability of TSO. We also discuss invoking TSO commands and working with REXX variables from programs written in Assembler, PL/I, COBOL, and C.

Audience

Applications and systems programmers, who need to know how to use the facilities of TSO and REXX from programs written in Assembler, COBOL, PL/I, or C.

Prerequisites

At the very least, the student entering this course should have experience in using REXX in the TSO environment and in writing programs in one of these languages: Assembler, COBOL, PL/I, C.

Related IBM Materials

This course is drawn from these and other IBM manuals; access to these publications in the classroom is desirable but not required:

SA22-7782 - TSO/E Command Langugage Reference
SA22-7790 - TSO/E REXX Reference
SA22-7789 - TSO/E Programming Services

Major Topics Include

Passing arguments to and receiving parameters in compiled programs running in batch and native TSO
Issuing TSO commands from compiled programs (IKJEFTSR service)
Calling programs from an exec
Accessing, updating, and creating REXX variables from compiled programs running under TSO (IKJCT441 service)
Working with DB2 data from an exec (optional)
REXX dynamic program linkages (ADDRESS LINK, ATTACH, LINKPGM, ATTCHPGM, LINKMVS, ATTCHMVS)
Accessing, updating, and creating REXX variables from a program running in a non-TSO/E-integrated address space (IRXEXCOM service)

Exercises

There are eight standard and one optional hands-on exercises.

course objectives
course outline
TSO / ISPF / REXX / CLIST curriculum
Topic list
Course list
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Course Description

Introduction to TSO and REXX APIs