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JES2 – Identify and Resolve JES2 Batch Problems v2.4


5 hours


This course provides you with examples of common JES2 batch job-related problems and explains the process and JES2 commands that are used to display, analyze and resolve those issues. Detailed information relating to the function of JES2 checkpoints, their placement, and attributes is provided along with steps required to resolve problems associated with this resource.


Operators and systems programmers requiring the knowledge to resolve batch related JES2 problems.


Basic knowledge of the z/OS system and successful completion of Interskill’s Storage – Using JES2 in Scheduling Batch Jobs course.


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

  • Identify and resolve spool space shortages
  • Perform common NJE recovery tasks
  • Explain the purpose of JES2 checkpoints
  • Update JES2 Checkpoint Data Sets Using the Reconfiguration Dialog
  • Recover from Checkpoint Configuration Issues when Using a Coupling Facility

Course Content

Spool Space Recovery

Identifying Spool Space Shortages and Data to Purge
Reclaiming Spool Space
Offloading and Reloading Spool Files
Extending Spool Data Sets
Migrating Spool Data

NJE Errors and Recovery

Identifying Common NJE Errors
Resolving Hang Situations
Managing Network I/O Issues
Resolving Connection Problems

JES2 Checkpoint Concepts and Definition

JES2 Checkpoint Concepts
Displaying the JES2 Checkpoint Level
Displaying JES2 Checkpoint Attributes
Obtaining JES2 Checkpoint Statistics

JES2 Checkpoint Reconfiguration

JES2 Checkpoint Reconfiguration Concepts
Initiating the JES2 Checkpoint Reconfiguration Dialog
Modifying JES2 Checkpoint Attributes

JES2 Checkpoint and SysPlex

Coupling Facility and Checkpointing Concepts
Advantages and Disadvantages of Checkpoints on the Coupling Facility
Checkpoint Volatility Recovery Options

JES2 – Identify and Resolve JES2 Batch Problems Mastery Test