• Introduction to CICS Performance Tuning Using C\TREKIntroductionTuning and Tuning Trade Offs

  • What Is Response Time?

  • Types of Waits

  • What Affects Response Time?

  • Constraints

  • Closing
    
    

• Using Operating System Information To Tune CICS Using C\TREKIntroduction

  • Checking The MVS Virtual Storage Availability

  • CICS & Real Time Storage

  • How Is The CPU Treating This CICS Region?

  • Other MVS Areas That May Affect CICS

    • VTAM

    • Auxiliary Storage Manager

    • DFHRPL Extents

    • TIOT Used Storage

  • Recommendations
    
    

• Using C\TREK To Tune Processor Cycles

  • Introduction

  • File Control Tuning

    • LSR Pool

    • NSR Files

    • FOR Regions

    • Journaling

    • VSAM

  • SIT Parameters and Other Specifications

  • Transaction Class Definition

  • Temporary Storage/Transient Data

  • Program Manager

  • Operating System

  • Application Tuning

  • Recommendations
    
    

• Using C\TREK To Tune Real Storage

  • Introduction

  • Operating System and Real Storage

  • VSAM and Real Storage

  • CICS Options to Control Real Storage Use

  • Recommendations
    
    

• Using C\TREK To Tune Virtual Storage

  • Introduction

  • Operating System

  • VSAM

  • CICS

  • Tuning Virtual Storage

    • Above the Line

    • Below the Line

  • Recommendations
    
    

• Using C\TREK Transaction Controls

  • Introduction to Transaction Control

  • Defining the MXT Parameter

  • Using TCLASSes to Control Resources

  • Setting ICVR

  • Should you use DTIMOUT & SPURGE?

  • What is RTIMOUT?

  • Transaction Priority and PRTYAGE

  • Transaction Isolation

  • Other Transaction Definitions

  • Recommendations

  • Appendix
    
    

• Using C\TREK To Tune NSR Files

  • Introduction

    • Advantages of LSR

    • Advantages of NSR

  • NSR File Definition

    • Defining # of Strings

    • Defining # of BUFNDs

    • Defining # of BUFNIs

  • NSR Buffer Definition

  • NSR Performance

    • Why Do You Want Extra BUFNDs?.

    • Why Do You Want Extra BUFNIs?.

    • Calculation of BUFNIs for an NSR File

  • Recommendations
    
    

• Tuning CICS LSR Buffers Using C\TREK

  • Introduction

  • LSR Tuning Areas

  • Pool Definition

  • LSR Pool Measurement

  • Overlooked LSR Tuning Areas

  • LSR Pool Candidates

  • Closing
    
    

• Using C\TREK to Tune VSAM Files

  • Introduction

  • VSAM Definitions

    • CA size

    • Share Options

    • KEYRANGES

    • IMBED/REPLICATE (Obsolete)

    • SPEED vs. RECOVERY

    • WRITECHECK

    • ERASE

  • DASD Space

    • Over/Under Allocation of disk space

      • HARBA

      • HURBA

    • Track Utilization

    • Free Space

      • CI/CA Splits

      • CI Size

        • Data

        • Index

    • Time Stamp

  • SIT CILOCK=NO|YES

  • Processing Options

    • Browsing

    • Alternate Indices

    • Data Tables

  • Recommendations
    
    

• Using C\TREK – Tuning Index CI Sizes.

  • Introduction

  • Defining The Index CISZ

  • Index CISZ Considerations

  • Estimating The Default Index CISZ

  • Other Considerations

  • Recommendations
    
    

• Using C\TREK – Reviewing VSAM Free Space. 11-1Introduction – What Is VSAM Free Space?

  • Splits

  • CI Free Space

  • CA Free Space

  • General Recommendations for VSAM Free Space

  • Appendix
    
    

• Using C\TREK To Tune CICS\DB2 Interface

  • Introduction

  • CICS\DB2 Interface Overview

  • The CICS\DB2 Connection

    • POOL and COMMAND Threads

  • CICS\DB2 DB2ENTRY

    • Thread Types, Authorizations

  • Monitoring and Tuning

  • Recommendations

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