z/OS DFSORT Application Programming Guide
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CKPT

z/OS DFSORT Application Programming Guide
SC23-6878-00

The CKPT option might preclude the use of the more efficient Blockset technique.

Note: If installation option IGNCKPT=YES has been selected, DFSORT ignores the checkpoint/restart request and selects the Blockset technique.
Parent topic: Avoid options that degrade performance

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