GDG Generations Limit

JES2/3, JCL, utilities.
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Anjali Chopra
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GDG Generations Limit

Post by Anjali Chopra »

Hello,

What is the maximum limit for a GDG generation? In a way, I know this but I'm bit confused - as per the materials available it is 255. But when I have created a new gdg with NOEMPTY, NOSCRATCH option it created more than 258 generations without deleting the previous generations. And all the generations are catalogued. How come?

Thanks
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Anjali
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Anuj Dhawan
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Re: GDG Generations Limit

Post by Anuj Dhawan »

Mathematically, you can have generations numbered up to 9999 as in GxxxxV00 -- "xxxx" can go from 0000 to 9999. However, if you've a GDG for which you've somehow cataloged 9999 generations -- only 255 of them will be 'active" and will be "attached" to the GDG-base.

When you refer to GDGs with relative-generation-numbers, e.g. (+1), +(2) -- only the "active" generations will be referred.

Just a side note -- You should also read about SCRATCH, EMPTY, NOEMPTY for GDGs.
Thanks,
Anuj

Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
Anjali Chopra
Website Team
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Posts: 100
Joined: Sun May 12, 2013 12:33 am

Re: GDG Generations Limit

Post by Anjali Chopra »

Thanks Anuj, this is helpful.
Regards,
Anjali
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Anuj Dhawan
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Posts: 2799
Joined: Sun Apr 21, 2013 7:40 pm
Location: Mumbai, India
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India

Re: GDG Generations Limit

Post by Anuj Dhawan »

You're welcome! :)
Thanks,
Anuj

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