Enterprise PL/I Debugging and Maintenance

Course Number: 653-TF
Recommended Duration: 2 days

Intended Audience
PL/I programmers who need to debug PL/I programs, understand the PL/I run-time environment, or tune PL/I programs for performance.

Objectives
The student will learn to approach debugging systematically, using the appropriate features of the PL/I language to facilitate debugging. In addition, he or she will learn to interpret the various forms of debugging output from PL/I, including CEEDUMPS. There are two machine exercises.

Prerequisites
The student should have experience coding PL/I programs, be comfortable with the text editor you use, and be able to code JCL to run simple batch jobs.

Topics

General debugging strategy
Debugging techniques
How and where does PL/I store variables
Storage classes - static, automatic, controlled and based storage
DSAs and Heaps
Compiler inputs and outputs
Compile and execution time parameters
Subroutines, arguments, and parameters
Locators / descriptors
Dummy arguments
ON ERROR
Pointer debugging
PLIDUMP and CEE3DMP
Conditions
PL/I and dumps
Command abends
Finding where your program stopped
Finding data in a dump
Good coding techniques
Performance considerations

Enterprise PL/I Debugging and Maintenance

General debugging strategy

Debugging techniques

How and where does PL/I store variables

Storage classes - static, automatic, controlled and based storage

DSAs and Heaps

Compiler inputs and outputs

Compile and execution time parameters

Subroutines, arguments, and parameters

Locators / descriptors

Dummy arguments

ON ERROR

Pointer debugging

PLIDUMP and CEE3DMP

Conditions

PL/I and dumps

Command abends

Finding where your program stopped

Finding data in a dump

Good coding techniques