On Thu, 2 Sep 2021 18:37:28 -0700, Sri h Kolusu wrote:
>> I have used
>>
>> //SORTIN DD DSN=&&X,DISP=(OLD,PASS)
>> //SORTOUT DD DSN=&&X<DISP=(OLD,PASS),VOL=REF=*.SORTIN
>
>Clark Morris,
>
>Please don't ever do that with a COPY operation.
>
It might appear to work in a small test case where the data don't
exceed a single block then fail spectacularly in a larger production job.
At times when I want to overwrite SYSUT2 if the data set exists but
create it if it does not, I have used:
//HANDLE DD DISP=(MOD,CATLG),DSN=&SHSUID..Q2.Q3,
// UNIT=SYSALLDA,SPACE=...
//SYSUT2 DD DISP=SHR,DSN=*.HANDLE,VOL=REF=*.HANDLE
Alas, referbacks work only in batch JCL.
-- gil
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