Parameters on SYSCKEOV DD statements

When creating a checkpoint data set:

Code a SPACE parameter, but do not request secondary space. The primary space request must be large enough to hold all checkpoints; if not, the job abnormally terminates.
Do not code the RLSE subparameter of the SPACE parameter.
Code the CONTIG subparameter of the SPACE parameter to request contiguous space. The system otherwise provides additional primary space using extents.
The SYSCKEOV DD statement must define a BSAM data set, but cannot define a partitioned data set extended (PDSE).
Code DISP=MOD to reduce loss of checkpoint data in case of a system failure during checkpointing.

Other parameters:

Do not code on the SYSCKEOV DD statement the following:
- CHKPT=EOV parameter.
- DCB parameter. All DCB information is provided by the checkpoint at EOV facility.
- DEFER subparameter of the UNIT parameter.
If you code the LABEL parameter, you must specify LABEL=(,SL) for IBM® standard labels.
If the SYSCKEOV data set resides on a direct access storage device, that device cannot be shared with another processor.