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Course Catalog » z/OS Curriculum » z/OS 2.3 Series

z/OS - Resolving z/OS System Problems 2.3

5 hours



This course describes the processes and commands required to resolve common z/OS system problems. It also describes when cancel and force commands should be used and how to handle command flooding.


z/OS training for senior operators and technical support personnel who require knowledge to identify and solve z/OS system problems.


Successful completion of the z/OS - Identifying z/OS System Problems 2.3 course.


After completing this course, the student will be able to:

  • Terminate failed tasks, users, batch jobs, and catalog requests
  • Restart the system using a PSW restart
  • Enter commands used to resolve system issues

Course Content

Terminating Tasks

CANCEL Command

Ending CAS Requests

Using the FORCE Command

FORCE Command Procedure and Syntax

FORCE Command

Restarting the System

Recognizing When to Use a PSW Restart

Invoking a PSW Restart

Additional Problem Handling Techniques

Logs and Messages

Changing the Maximum Number of Concurrent TSO Users

Varying I/O Devices Online and Offline

Auto-Reply Function

Handling Command Flooding

Command Classes

Formats and Purposes of the CMDS Command

CMDS Command

z/OS - Resolving z/OS System Problems 2.3 Mastery Test

Course Catalog » z/OS Curriculum » z/OS 2.3 Series
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