z/OS Problem Determination & Diagnostics

 LENGTH OF COURSE:
2 Days

DESCRIPTION: This course is designed to provide operators, programmers, and system support staff with the skills required to identify, isolate and solve many system problems. Students will learn concepts, techniques, and tools used in the OS/390 problem determination and troubleshooting.

PREREQUISITES: Some knowledge of OS/390 concepts & terminology

INSTRUCTION TECHNIQUES: A combination of Lecture and Hand-On Labs (when/where available).

AUDIENCE

Staff members responsible for the operations, monitoring, and management of the S/390.
KEY HIGHLIGHTS:

  • Overview of OS/390 terminology & Concepts
  • Learn key processes and process flow
  • Understand the OS/390 IPL process
  • Learn basic problem determination processes
  • Overview of OMEGAMON for OS/390
    • Setting OMEGAMON Thresholds
    • Using Help and other navigation aids
    • Realtime and historical monitoring
    • Monitoring the host and network response time
    • Analyzing batch performance
    • DASD I/O Performance
    • Enqueues & Reserves
  • Proper environment required to use IPCS
  • Browse Dump Functions

  • Analyze Dump Contents
  • Batch Problem Analysis
  • Utility Functions
  • Dump Inventory
  • IPCS Dialogs
  • Recovery/termination manager overview
  • ESTAE Routines
  • FRR Routines
  • OS/390Interrupt Handlers overview
  • Process and Auxiliary storage manager
  • Lock and Serialization manager
  • Debugging paths used to identify component problems
  • Component Traces
  • System Traces
  • Master Traces
  • GTF Traces
  • AR Mode
  • SRB Mode
  • Cross-Memory Mode
  • WAIT Mode

  • Systematic approach to solve SVC and Stand-along dumps
  • OS/390dispatching mechanism
  • SRB, cross-memory mode and access register mode service
  • Data spaces and hiperspaces
  • LOGREC, IOS, and TRACE records
  • Actions taken by the recovery manager
  • Debugging OS/390 and IOS subsystem SVC and SA dumps
  • IOQ Concepts
  • Queue Lengths
  • I/O Buffer Pools

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