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IBM CICS 3.1: Structure and Debug

Course Code: CDE (Also known as: CDEGB)      Days: 4
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England
Somerset
Bath (BA1) 19/04/10 £ 1,500
Bath (BA1) 19/07/10 £ 1,500
Bath (BA1) 06/09/10 £ 1,500
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Course Overview

Suitable for the BCS Mainframe Technology professional Exams for level 3 Consultant (CICS)

This course has been classified as IT Technical Training.

Audience

This course is for system programmers and technical support staff responsible for supporting a CICS system. CICS application programmers who are responsible for reading their own CICS dumps would also benefit.

Skills Gained

This course aims to:

  • Describe the internal structure of CICS/TS, including the domain structure.
  • Explain how failures are internally handled and how the user can participate in ABEND processing.
  • Present the control blocks and internal logic.
  • Transaction dumps and system dumps are used as examples.
  • IPCS is also reviewed so that students become familiar with this product.

Prerequisites

Systems programmers should have at least six months CICS experience and a basic knowledge of CICS Internals. Application programmers should have a minimum of nine months CICS programming experience.

Course Outline

Architecture

  • Domain
  • Kernel Linkage
  • Common Format
    • Parameter List
    • Module
  • Kernel Repository
  • Kernel Functions
  • Important Kernel Structures

Messages

  • Introduction
  • Relation to Dumps
  • Identifiers
    • DFHnnnn
    • DFHccnnnn
  • Format

Dumps

  • Identifiers
  • Tables
  • Transaction
    • Processing
    • Output Format
    • Determining Category
  • System
    • Processing
    • Desirable Parameters

Tracing

  • Where
  • What
  • CETR
    • Main Panel
    • Component Panels
    • Terminal/Transaction Panel
    • JVM Panels
  • Formats
    • Abbreviated
    • Extended or Full
  • Recommendations

Significant Application Domain Control Blocks

  • Task Control Area (TCA)
  • EXEC Interface Block (EIB)
  • Task Abnormal Condition Block (TACB)
  • Storage Check Zone (SCZ)
  • Terminal Storage
    • Terminal Control Table Terminal Entry (TCTTE)
    • Terminal Input-Output Area (TIOA)
    • Storage Accounting Area (SAA)

Relating to Source

  • Finding COBOL statements
  • Examples
  • Finding Variables
    • Common
    • Working-Storage
    • Linkage
  • Examples
    • Common
    • WORKING-STORAGE
    • LINKAGE

Key Domain Structures

  • Kernel (KE)
  • Dispatcher (DS)
  • Transaction Manager (XM)
  • Application (AP)
  • Program Manager (PG)
  • Loader (LD)
  • Enqueue Domain (NQ)

System Dump Solving

  • General
  • Waits
  • Storage Violations
    • Structure of Storage Manager (SM)
    • Using the Dump


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