How to count the no of versions created for a GDG

deva · New User Joined: 03 Nov 2005 Posts: 19

Hi all,

I have one GDG i would like to count the no of versions created for the GDG base.

Thanks,
Deva.

UmeySan · Posted: Tue Nov 07, 2006 3:02 pm

Hi !

By defining a GenerationDataGroup you have to specify a Limit. That's the number of max generations you can create in order. By reaching the max, a turn around will happen and the oldest one will become the newest one.

With every create of a GDG, for ex. DSN=HUGO you code in JCL:

//OUTPUT DD DSN=HUGO(+1)

So now a File is created with DSN HUGO.G000V01

By next run, it's HUGO.G000V02 and then HUGO.G000V03

You could simply use TSO 3.4 with HLQ of your DSN to see all allocated
generations.

In my ex. here HUGO.G000V03 is the latest one, wich also means the newest one.

Regards, UmeySan

Indrajit_57 · New User Joined: 27 Jun 2006 Posts: 60

Use the IDCAMS LISTC GDG utility