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Milind · Beginner Joined: 29 Dec 2004 Posts: 26 Topics: 20

Hi All,

I have a query regarding dataset existence:

How can I know whether a dataset exists or not in a JCL? Based on this I will decide my DISP parameter. Either new or old.

Thanks in advance.

Milind Deshmukh.

kolusu · Posted: Tue Jun 14, 2005 5:23 am Post subject:

Milind,

You can use IDCAMS REPRO to figure out if the dataset exists and if exists if it was empty or not by using the following JCL

Milind · Beginner Joined: 29 Dec 2004 Posts: 26 Topics: 20

THANKS KOLUSU.

Cheers,

Milind Deshmukh.

nevilh · Beginner Joined: 11 Aug 2004 Posts: 115 Topics: 0

If you have already submitted the job how will you change the disposition
the decision has already been made

Bill Dennis · Posted: Tue Jun 14, 2005 10:12 am Post subject:

Your JCL would have multiple execution paths (NEW or OLD) based on the CCODE from the IDCAMS step. See the IF,THEN logic for JCL.
_________________
Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

nevilh · Beginner Joined: 11 Aug 2004 Posts: 115 Topics: 0

Fine for Jes2 . Jes3 will give you an error

semigeezer · Posted: Tue Jun 14, 2005 3:23 pm Post subject:

Why not just have an IEFBR14 step that uses DISP=MOD (which will allocate the file if it does not exist, and do nothing if it does), then use DISP=OLD in the subsequent step(s). That is how this is normally done, as far as I know.