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Dataset Space Alert

 
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akumaras

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Joined: 06 Jul 2012
Posts: 10
Location: india

PostPosted: Tue Nov 19, 2013 6:58 pm    Post subject: Dataset Space Alert
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Hi,

Is there any way to get an alert about the space available or used in the dataset to avoid space failures?

Please let me know how to do this if there is a way.
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expat

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Joined: 14 Mar 2007
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Location: Back in jolly old England

PostPosted: Tue Nov 19, 2013 7:13 pm    Post subject:
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Talking to your storage management team would be the best place to start as they may already have monitoring procedures in place.

They may have already adapted the SMS ACS routines to automatically make datasets multi volume as a default. If not, why not ask them about it.

You may also consider using DCOLLECT to perform an analysis with if it really must be done by you.
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enrico-sorichetti

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PostPosted: Tue Nov 19, 2013 7:20 pm    Post subject: Reply to: Dataset Space Alert
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most well managed sites have a procedure in place to forecast data growth
( at least for the critical applications )
in order to implement the appropriate changes in a timely way
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akumaras

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Joined: 06 Jul 2012
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Location: india

PostPosted: Tue Nov 19, 2013 7:46 pm    Post subject: Dataset Space Alert
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Hi,

I want to give a try myself before speaking to storage management team. So i will try using DCOLLECT as suggested by expat and let you all know the status.
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Tue Nov 19, 2013 8:18 pm    Post subject:
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Hello,

Many of my client sites do not allow developers to use DCOLLECT. . .

fwiw
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expat

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PostPosted: Tue Nov 19, 2013 8:19 pm    Post subject:
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And you may well be wasting your time reinventing the wheel that already exists.
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Robert Sample

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Joined: 06 Jun 2008
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PostPosted: Tue Nov 19, 2013 8:41 pm    Post subject:
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Quote:
Is there any way to get an alert about the space available or used in the dataset to avoid space failures?
In general, the answer to your question depends upon your site and its storage management policies and procedures. The answer also partly depends upon your application -- if the space used by the data set stays constant, it could use 100% of the allocated space and never have any space abends. On the other hand, if the space usage varies widely depending on extrernal factors, having the data set have 99% free space might not be adequate when that once-in-a-blue-moon occurrence occurs and the data set suddenly needs several thousand cylinders.

Basically, the bottom line is that to some extent it is not possible to completely prevent space abends. Without complete and thorough knowledge of the application and the site, it probably makes little sense to worry about space abends -- unless they are occurring frequently.
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David Robinson

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Location: UK

PostPosted: Wed Nov 20, 2013 1:02 pm    Post subject:
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The downside of DCOLLECT of course is that the datasets being analysed must exist at the time that the analysis is done.

I have succesfully used SMF type 15 records which include both the number of extents that the dataset is in as well as the volume count. Thus it is a simple matter to calculate the maximum possible extents for any given dataset and set a threshold for percentage of maximum extents used.

That way all datasets are analysed, even temporary work files.
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TheMFKid

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Joined: 20 Nov 2013
Posts: 91
Location: India

PostPosted: Wed Nov 20, 2013 1:07 pm    Post subject:
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If you are having a specific dataset or a list of specific datasets, you can try to design and run a customized program/job which will send you the space utilization report daily or weekly.
There are various functions like ISPEXEC DSINFO which can return the current allocation/utilization information for a given dataset.
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akumaras

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Joined: 06 Jul 2012
Posts: 10
Location: india

PostPosted: Wed Nov 20, 2013 6:12 pm    Post subject: Dataset Space Alert
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Hi All,

I tried to use DCOLLECT but program is not allowing me to do the same due to insufficient facility class authorization to perform function..

Expat I am just trying to explore things instead of going directly to Storage group...Because of this exploring i found one of your post which was way back in 2009 on the same topic which was very informative.
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