I'm trying to sort out the impact of various sysout limitating options
but the FM is not absolutely clear in every aspect. Comments,
corrections
and suggestions are welcome.

Leaving punched cards aside, there are four JCL/JES parameters that can
be
used to limit the amount of sysout output from a job: BYTES=, LINES=,
and
PAGES= on the JES2/3 JECL and OUTLIM= on the SYSOUT DD.

The first three set a threshold for JES2/3 to issue an "xyz exceeded" 
message and an action to occur. The action can be "cancel", "dump", and
"warning".

It is my understanding, that
- neither action will trigger IEFUSO to be entered when the 
  threshold is reached.
- neither JES will ever cancel a job because of threshold exceeded
  when the action is "warning".
- the cancel/dump actions lead to an S722 abend (IEFUSO not called).

Do these limits apply to the job level (all sysout data sets from this
job) or are they applied on a sysout data set base? I've got a job
(the initiator of this investigation) where the number of pages on the 
"IAT1600 PAGES EXCEEDED BY" is increasing but the number of bytes 
seems to start over again multiple times??



Independently from the above, OUTLIM= sets the threshold for the number
of lines for each single sysout data set.

It is my understanding that
- there is no message when OUTLIM= is reached.
- IEFUSO is entered when OUTLIM= is reached and the exit decides if 
  the job can continue with a new limit or abend with S722.
- the job abends with S722 if IEFUSO is not active (SMFPRMxx)

The maximum value for OUTLIM= is 16777215. Can this value e overridden
by the exit or is this the maximum number of lines  JES2/3 can handle 
for one single sysout data set? The exits manual doesn't say what the
upper limit for the "new limit" returned in R0 is.

Am I missing anything else?



Peter Hunkeler

Credit Suisse - Information Technology

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