Changing creation date default settings during data set COPY and RESTORE (OW19618)

During RESTORE and COPY operations, source and target data set creation dates remain the same, unless the data set is renamed. However, if you rename the restored or copied data set, the current date (TODAY) replaces the creation date in the target data set's DS1CREDT field.

DFSMSdss provides four patch bytes that allow you to change the method of setting the DS1CREDT field. These patch bytes apply only to data sets that are allocated by DFSMSdss (not prealocated data sets). The patch bytes are below:

If the patch byte at offset X'46' of module ADRPATCH is set to X'FF', the creation date of the target data set that is restored without a rename is set to the current date.
If the patch byte at offset X'47' of module ADRPATCH is set to X'FF', the creation date of the target data set that is restored and renamed is set to the source data set's creation date.
If the patch byte at offset X'48' of module ADRPATCH is set to X'FF', the creation date of the target data set that is copied without a rename is set to the current date.
If the patch byte at offset X'49' of module ADRPATCH is set to X'FF', the creation date of the target data set that is copied and renamed is set to the source data set's creation date.

To cause DFSMSdss to set the creation date to the current date for all data sets being copied and restored and not renamed, modify the sample JCL (see Sample JCL) as follows:

//SYSIN DD *
   NAME ADRDSSU ADRPATCH
   VER   46        00
   REP   46        FF
   VER   48        00
   REP   48        FF

Note:

As an alternative, you can use the SET PATCH command to set the patch bytes dynamically
For a preallocated target that has F8/F9 DSCBs, the F9 DSCB field DS9CREAT is set ON, and is being scratched and reallocated, these patch byte settings will not be honored. These types of data sets have a field in the F9 DSCB which corresponds to the number of milliseconds past midnight in which the data set was created (DS9TIME). In order for the DS9TIME to be usable, the creation date and the time past midnight of the preallocated target will be preserved as its value prior to scratching.