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Add a step to the beginning of your next Teradata PT job, with the following Job Control Language statements:
//DELETE PGM=IEFBR14 //CPD1 DD DISP=(OLD,DELETE),DSNAME=<high-level qualifier>.CPD1 //CPD2 DD DISP=(OLD,DELETE),DSNAME=<high-level qualifier>.CPD2 //LVCP DD DISP=(OLD,DELETE),DSNAME=<high-level qualifier>.LVCP
where <high-level qualifier> is the high-level qualifier you supplied to the TBUILD JCL PROC when you submitted the job that created these checkpoint files. Or substitute the names of your checkpoint datasets for everything to the right of DSNAME= above, if you have a different convention for naming them.
For examples of naming and using checkpoint datasets on z/OS, see the “JCL Examples” section in the Teradata Parallel Transporter Reference (B035-2436).