CICS/TS Internals & Problem Determination

 LENGTH OF COURSE:
 3-5 Days

DESCRIPTION: This course is designed to be an overview of CICS/TS internals and transaction processing. The course will concentrate on problem determination and dump analysis. In addition, students will be given a guide to quickly find and resolve many CICS/TS Transaction and System Dumps. Paper Transactions dumps representing "Real Life" problems will be used and The IBM Interactive Problem Control System (IPCS) will be used for System Level problem evaluation.

PREREQUISITES: Knowledge of CICS/TS and CICS/TS coding experience.

INSTRUCTION TECHNIQUES: A combination of Lecture and Exercises. Students are encouraged to bring their own dumps to class.

AUDIENCE

This course is designed for the applications programmer/analyst or system programmer that needs an understanding of CICS/TS internals and how to quickly resolve CICS/TS problems.
KEY HIGHLIGHTS:
  • CICS/TS Transaction Processing and MVS TCB usage
  • Overview of CICS/TS Transaction Dumps and Format
  • Dump Isolation & Control
  • Tracing Control
  • Understand how High Level Languages interface with the CICS/TS Engines
  • Learn the details of the CICS/TS Execution Interface
  • Using Transaction Dumps to find problems
  • Storage Violation Diagnosis
  • Program / Transaction Abends
    • Find the Symptom Strings
    • Locate Failing Instruction and Find Instruction in Program
    • Locate Data / Buffers in the Linkage Section and Working Storage
    • Use the BLL & BLW Cells for Problem Determination
  • Identify Key " Eye Catchers " in a Dump and Identify How to Use for Problem Determination
  • How to Identify Storage Overlays
  • Storage Areas, Chains and Blocks
  • Find All Data Involved In the Program


  • Evaluate Field by Field the Content
  • Find Key Control Areas Quickly
  • Link a transaction to specific problems
  • Control Blocks for Problem Determination
  • Detailed Trace Table Evaluation
  • How to use IPCS for problem determination
  • Using VERBEXIT and key control statements
  • How to link the trace table to the exact program location in Transaction and System Dumps
  • DSA Usage and Structure
  • Storage Chains and Blocks
  • PSW and Registers Relevant to Dump
  • Key System Control Blocks for:
    • Storage Manager
    • Transaction Manager
    • Program Manager
    • Loader Domain
    • Kernal Domain
    • Domain Manager
    • Directory Domain
    • Application Program Interface


  • Interval Control Elements, Execution Interface Block, Table Manager Internals, Page Allocation Map,
  • AID chains
  • CICS/TS / DB2 Interface
  • RCT Parameters and Performance


FROM OUR STUDENT EVALUATIONS...
"This course was very clear in helping me analyze problems within CICS. I feel very confident that I can go back to my company and resolve problems which arise in CICS."

Karl G. Schleger

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