CHKPT parameter

Parameter type

Keyword, optional

Purpose

Use the CHKPT parameter to request that a checkpoint be written when each end-of-volume is reached on the multivolume data set defined by this DD statement. Checkpoints are written for all volumes except the last. Checkpoints can be requested for input or output data sets.

Note: CHKPT is supported only for multivolume QSAM or BSAM data sets. CHKPT is ignored for single-volume QSAM or BSAM data sets or for ISAM, BDAM, BPAM, or VSAM data sets. CHKPT is not supported for partitioned data sets extended (PDSEs).

References

For more information, see z/OS DFSMSdfp Checkpoint/Restart.