Termination and restart of CHECK DATA

When you terminate CHECK DATA, table spaces remain in the same CHECK-pending status as they were at the time the utility was terminated. The CHECKDAT phase places the table space in the CHECK-pending status when CHECK DATA detects an error; at the end of the phase, CHECK DATA resets the CHECK-pending status if it detects no errors. The REPORTCK phase resets the CHECK-pending status if you specify the DELETE YES option.

You can restart a CHECK DATA utility job, but it starts from the beginning again.