Mainframe miscellaneous notes

Spool - high utilization - using IOF

TSO IOF
ST *
SORT ALLOC DThis sorts by allocated track groups, the worst culprit at the top.
This is a pretty good indication of who the heavy hitter(s) are.

Then,
$CJxxxx,P to cancel and purge output of the desired jobs.

Spool - high utilization - native JES2 commands

$DJOBQ,SPOOL=(%>0.5) (displays jobs using > .5% of the spool)
or the equivalent
$DSPL,ALL,JOBS=.5
Then,
$CJxxxx,P to cancel and purge output of the desired jobs.

Alternate commands to purge output in multiple or a range of jobs

$POJ(jno0,jno1,jno2,…,jnon)
$POJ(nn-mm)

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