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Joe_Song
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Joined: 22 Jan 2008
Posts: 53
Location: china
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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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Joined: 06 Sep 2007
Posts: 792
Location: Chennai, India
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255...
If I understand your question correctly... |
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shrivatsa
Warnings : 1
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Joined: 17 Mar 2006
Posts: 174
Location: Bangalore
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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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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| The simple answer is .............. How many do you NEED |
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rajeshwarch
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Joined: 24 Mar 2008
Posts: 29
Location: mumbai
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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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Joined: 22 Jan 2008
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Location: china
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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
Superior Member
Joined: 14 Mar 2007
Posts: 10873
Location: italy
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How in heaven are we supposed to know what limit You should define 
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
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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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
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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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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