The information in this module is designed to help you diagnose problems on z/OS, its subsystems, its components, and problems in applications running under the system. Using this information, you can:

• Identify the problem type
• Determine the failing subsystem, component, job, or application
• Collect the correct data needed to diagnose the problem
• Develop a search argument for searching problem reporting databases
• Understand what problem data to collect before reporting the problem to IBM or the independent software vendor.

This information can help you determine why a problem occurred and where a problem occurred; it does not describe how to fix program instructions in your own code.