MVS TRAINING, Inc. z/OS, Assembler, COBOL, JCL, REXX, ISPF, CICS, DB2, ISPF/JCL

Back to System Programmer

z/OS Diagnostics and Debugging
5 days

This class is a lecture-workshop for experienced systems programmers with a focus on using the tools available to narrow down the scope of system problems, identify failed components and debug operating systems problems. Emphasis will be on problem diagnosis and “hands-on” exercises using the available tools.

AUDIENCE
This class is intended for experienced systems programmers with a good understanding of TSO/E, JCL and OS/390 functions.

SESSION CONTENT

Problem types and their diagnosis

Abends
System “hangs” or wait states
System or component loops
Incorrect output or corrupt operation problems
Performance/availability problems

Component identification and isolation Diagnostic tools and their usage

Abends
Tracing mechanisms
LOGREC
Service Aids
IPCS

System failure versus recoverable scenarios

SESSION CONTENT (Details)

Problem diagnosis overview
1. Types of problems
2. Component failure isolation approaches
3. Assessment
4. Specifying symptoms
IPCS
1. Verbs and functions
2. CLISTS and customization options
Abends and dump processing
1. Dump types
  1. SVC Dumps
  2. Stand-alone dumps and their use
  3. Abend dumps
  4. SNAP dumps
  5. Transaction dumps
2. System and component reference data
SLIP Traps
Tracing tools and procedures
1. System trace (ST)
2. Master trace
3. Generalized tracing facility (GTF)
4. Component trace (CT)
5. Transaction trace
6. GETMAIN, FREEMAIN, STORAGE trace
Service Aids
1. SPZAP
2. AMBLIST
Additional diagnostic data
1. LOGREC data
Assessing system recovery options
1. Spin loops
2. Performance/availability problems

Our z/OS experts can cover any and all topics on this subject—topics can be added or deleted per Client’s needs. WORKSTATIONS ARE NEEDED FOR THIS SESSION.