Corez/OS32 min
JES2 and SDSF in depth
Follow a batch job through every JES2 phase, from input to purge. Learn how job classes, initiators, output classes and the spool fit together, which JES2 commands do what, how to work SDSF properly, and how sites handle a spool that is filling up.
What you will be able to do
- Describe each JES2 phase a job passes through and where jobs get stuck
- Explain how job classes, initiators and output classes control when jobs run and where output goes
- Use SDSF panels and action characters, and know what the main JES2 commands ($D, $A, $H, $P, $C, $T) do
- Recognise a spool shortage and describe the safe steps to relieve it
Lessons
- The life of a job inside JES2JES2 receives every batch job, checks and converts its JCL, queues it until an initiator picks it up, collects everything it prints on the spool, and finally removes it.
- Spool, output and the main JES2 commandsThe spool holds every job's JCL and output. Output classes decide whether output prints, waits to be read, or is discarded.
- Working in SDSF and handling spool problemsSDSF is the everyday window onto JES2: panels for the queues, initiators and spool, plus action characters to read, hold, release, cancel and purge.
Track your progress and earn a certificate.
Free account, 15 quiz questions for this subject.