Resetting the data-set-changed indicator during physical full or partial RESTORE operation (OA20907)

The data-set-changed indicator (DS1DSCHA) bit is automatically turned off during a physical full volume or tracks RESTORE operation. You can reset the indicator by setting the flag at offset X'52' in ADRPATCH . The valid settings are:

X'00': DFSMSdss turns off the DS1DSCHA bit during a physical full volume or tracks RESTORE operation.
Any setting other than X'00': DFSMSdss does not reset the DS1DSCHA indicator during a physical full volume or tracks RESTORE operation.

To set the flag on dynamically, use the SET PATCH command. To set the flag on permanently, modify the sample JCL (see Sample JCL) as follows:

//SYSIN DD *  
    NAME ADRDSSU ADRPATCH  
    VER   52        00  
    REP   52        FF

Note: If you use an application program interface (API) to invoke DFSMSdss, this patch is not used and the DS1DSCHA bit is reset as usual.