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Specifying a large volume count question

 
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bonda0123

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Joined: 07 Sep 2007
Posts: 9
Location: Hyderabad

PostPosted: Sun Sep 09, 2007 2:27 am    Post subject:
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Small Query :

Is it advisable to use VOL(,,,99) whenever we are not aware of the actual available space ?

Please advise me, if any chances of a severe error occurance with VOL(,,,99)

Thanks in advance


Bonda
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Sun Sep 09, 2007 4:27 am    Post subject:
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Hello Bonda and welcome to the forums,

When you have a question, it is best to start a new topic for your question rather than replying to some existing topic.

I do not believe your question is related to the topic you replied to.

Quote:
Is it advisable to use VOL(,,,99) whenever we are not aware of the actual available space
No, this is not a good thing to do.

When you are creating a file (whether on dasd or on "tape", you should have some idea of how much data will be written - before just creating some "monster" file. If you describe your output requirements to your storage administration people, they can give you a fairly close estimate of how much output media your file will require.
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bonda0123

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PostPosted: Fri Sep 21, 2007 9:13 pm    Post subject: Thanks a Lot d.sch
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Sorry I am a newbie to this forumn and haven't gone through the rules, thats my mistake. Thanks for letting me know this.

and Regarding this query, I say this line in the prev query JCL , so raised it there.

I got clear idea and estimated the danger :-) of this.


Thanks
Bonda
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dick scherrer

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PostPosted: Fri Sep 21, 2007 9:21 pm    Post subject:
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You're welcome icon_smile.gif

We're here when you have questions.
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expat

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Joined: 14 Mar 2007
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PostPosted: Sat Sep 22, 2007 3:27 pm    Post subject:
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Quote:
Is it advisable to use VOL(,,,99) whenever we are not aware of the actual available space ?

Absolutely not. You should always have a rough estimate of data volumes on which to base your space requirements.

Using this parameter may well cause serious problems in a production environment. So if the file is this big then perhaps consider using tape instead of DASD.

Also, the maximum number of DASD volumes allowable to any one dataset is 59.
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bonda0123

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PostPosted: Tue Sep 25, 2007 12:44 pm    Post subject:
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Thanks a Lot for the expert suggestion Expat icon_smile.gif
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