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Controlling Sysout Allocations
Here is how various combinations of the FREE and SPIN options behave:
| FREE=CLOSE | FREE=END (default) |
| SPIN=UNALLOC |
Sysout available at file close time
DDNAME freed at file close
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Sysout available at step end
DDNAME freed at step end |
| SPIN=NO |
Sysout available at job end
DDNAME freed at file close
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Sysout available at job end
DDNAME freed at step end |
| SPIN not specified |
same as SPIN=UNALLOC |
same as SPIN=NO |
The SYSOUT file will be closed by the system at step end if the file is not
explicitly closed by the program.
When you are running TSO in batch, you can specify the SPIN value on the
ALLOCATE command. You can control when a dataset (or SYSOUT) is freed
using the FREE command. Otherwise, the allocation is freed at the end of the
step.
OUTPUT Disposition
The OUTDISP parameter of the JCL OUTPUT statement can be used to specify
how the output will be handled. Two values can be specified - one if
the job completes normally and one if the job abends. For example,
OUTDISP=(PURGE,HOLD) says to make the SYSOUT held if the job abends,
otherwise purge the SYSOUT.
SYSOUT Segments
The JCL SEGMENT parameter specifies a page count. The SYSOUT file must have
carriage control characters specified in the RECFM (A or M). The page count
for the purpose of segmenting the output is based on the number of page eject
control characters in the SYSOUT dataset. The output becomes available for
printing regardless of FREE,SPIN or OUTDISP.
Refer to the JCL Reference Manual for details.
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