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[Dinesh Kumar]

Hi,

We are using a JCL wherein we create a temporary dataset and use it as follows.


1. In STEP1, copied a file NEWFILE1 to a temporary dataset (&&TEMP) with DISP = (NEW,PASS).

2. In STEP2, the temporary dataset (&&TEMP) with DISP = (OLD,PASS) was copied onto NEWFILE3.

3. In STEP3, copied a file NEWFILE2 to the same temporary dataset (&&TEMP) with DISP = (NEW,PASS).

4. In STEP4, temporary dataset (&&TEMP) with DISP = (OLD,PASS) was copied onto NEWFILE4.


The result:

i.) No JCL error and MAXCC=0.
ii.) But both the files NEWFILE3 and NEWFILE4 had the contents of NEWFILE1. Inspite of mentioning &&TEMP to be NEW in STEP3, the temporary dataset retains the old contents (contents of NEWFILE1).
iii)We have no JCL error for step 3


The question:

Why is that both NEWFILE3 and NEWFILE4 had the contents of NEWFILE1?
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Thanks & Rgds
Dinesh

[Bill Dennis]

You never deleted the &&TEMP from STEPs 1 and 2 but PASSed it. Even though you created another &&TEMP in STEP3, the first one was in the "passed dataset queue" and was reused in STEP4. If you look at the volumes the two &&TEMPs were created on and read from it will be clearer.
_________________
Regards,
Bill Dennis

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