CICS Transaction Debugging for CICS 6.1 (TD-CICSCTD)

Audience

  • COBOL Application Programmers using IBM CICS.
  • Systems Programmers supporting IBM CICS applications.
  • Developers in the IBM CICS Environment.


Prerequisites

  • Delegates should have two-to-three years experience coding CICS Command Level Applications, and should have some knowledge of programming.
  • Knowledge of COBOL is desirable but not essential.


Duration

4 days. Hands on.


Course Objectives

Enterprise COBOL V6 has dramatically changed how COBOL defines and locates its Working Storage and Linkage Sections. The traditional methods of locating these areas via the Task Global Table are gone. The TGT has been removed. COBOL has introduced new areas called the PPAs. Program Prolog Areas. There are 4 of them. There is a new Static Map that has also been created. The new COBOL Compiler listing V6 is fully explained. This CICS Transaction Debugging course explains how to find these storage areas and these new COBOL structures within a CICS transaction dump.

Upon completion, attendees will be able to confidently debug transactions dumps, to be more self-sufficient with application problems and to understand the methodologies of dump solving. The attendees will be given a road-map of problem solving and taken through a number of transaction dumps. Data Exceptions and Protections Exception are fully covered, as is a CICS LINK. Methodology is included to debug a looping transaction. The attendees will understand the important of CICS Control Blocks – EIB, PESA, TCA and the Trace table.The attendees will be able to describe how to use the Program Status Word and the General Purpose Registers to assist in debugging.


Course Content

DAY 1

  • Introduction to CICS Transaction Dumps
  • Understanding Data/Protection Exceptions
    • 0C4 and 0C7 Program checks
  • Analysing the dump information
    • Exec Interface Block
    • Transaction Abnormal Condition Block
    • The Program Status Word
    • The General Purposes Registers
  • CICS Internal Design


DAY 2

  • Setting CICS Dumping options
  • Specifying the CICS System Dump and Transaction Dump table on the CSD using CEDA
  • Printing transaction dumps
  • Understanding the Transaction Dump Utility
  • Debugging a Program Check – Mainline
    • Using the Cobol Programming Listing
    • Understanding the PPAs and how to use them
    • Understanding the new Static Map
    • The CEEDUMP
  • Debugging methodology – Understanding a Program Check
    • Understanding Save Areas
    • Finding the failing statement and the contents of Working Storage and Linkage Section


DAY 3

  • Debugging a Program Check – Exec CICS Link
    • Understanding the PESA
    • Understanding the step by step methodology of Debugging
  • CICS Tracing Facilities
  • Controlling the Trace – CETR
  • Setting Trace optionsPrinting the Trace with the Trace utility
  • Finding any EXEC CICS command in the COBOL source from the Trace table


DAY 4

  • Debugging a Program Loop
    • Using Exec CICS Enter Tracenum
  • Understanding CICS Abend codes
  • Debugging using Execution Diagnostic Facility
  • Using CEDF to solve the Program Check while the transaction is still abending
Download With Schedule Download Without Schedule