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How to identify how many generations should be used to GDG?

 
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Joe_Song
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PostPosted: Thu Apr 03, 2008 3:31 pm    Post subject: How to identify how many generations should be used to GDG?
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I want to know how i can know how many generation GDG should be defined when i create a new GDG?
what's the standard?
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Gnanas N

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PostPosted: Thu Apr 03, 2008 3:36 pm    Post subject:
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255...
If I understand your question correctly...
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shrivatsa
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PostPosted: Thu Apr 03, 2008 3:38 pm    Post subject: Reply to: How to identify how many generations should be use
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Yes Gnanas,

Standard is 255, But as per the requirement he needs to look into that how many generations he needs
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expat

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PostPosted: Thu Apr 03, 2008 3:46 pm    Post subject:
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The simple answer is .............. How many do you NEED
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rajeshwarch

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PostPosted: Thu Apr 03, 2008 4:58 pm    Post subject:
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you have a parameter LIMIT, if u r creating GDG using IDCAMS utility.
we can give limit=0 to 255, means that much generations are only cataloged at a time. after reaching the limit u can uncatalog or delete the generations.
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Joe_Song
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PostPosted: Thu Apr 03, 2008 7:41 pm    Post subject: Hi
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what i want to say is that when i got a requirment , and if need to create a GDG, i want to know how i can know how many generations i should to setup, like limit = 20 or 30? give a sample.
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enrico-sorichetti

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PostPosted: Thu Apr 03, 2008 8:12 pm    Post subject: Reply to: How to identify how many generations should be use
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How in heaven are we supposed to know what limit You should define icon_question.gif

ask the application/data analyst,

for example ... for a daily process with a weekly accumulation

You could define at the daily dataset with a 7 limit
and the weekly accumulation dataset with a 52 limit
... but thats only a sample based on calendar peculiarities,
not on application design

but again any number You choose without asking the designer is bound to be wrooong[/quote]
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Anuj Dhawan

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PostPosted: Thu Apr 03, 2008 10:50 pm    Post subject:
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Hi,

This sentence has the key to start
Quote:
but again any number You choose without asking the designer is bound to be wrooong
yup, usually these things are desided at the time of 'design'.
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dick scherrer

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PostPosted: Fri Apr 04, 2008 12:36 am    Post subject:
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Hello,

Said a bit differently, a gdg is not typically defined until it has been determined how many previously created copies of the data might be needed.
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