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Sequential data set modification date

 
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Prabh_Xansa

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PostPosted: Tue Apr 28, 2009 3:07 pm    Post subject: Sequential data set modification date
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How we can see the modification date for sequential data set.
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enrico-sorichetti

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PostPosted: Tue Apr 28, 2009 3:10 pm    Post subject: Reply to: Sequential data set modification date
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the most You will see is the "last referenced date"

the date changed is available only for PDS members with active ISPF statistics
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Prabh_Xansa

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PostPosted: Tue Apr 28, 2009 3:13 pm    Post subject:
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so there is no way we see the modification date for sequential dataset
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enrico-sorichetti

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PostPosted: Tue Apr 28, 2009 3:26 pm    Post subject: Reply to: Sequential data set modification date
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no, there is no way
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Terry Heinze

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PostPosted: Tue Apr 28, 2009 9:41 pm    Post subject:
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I think SMF records can, but they are not for the faint of heart.
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enrico-sorichetti

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PostPosted: Tue Apr 28, 2009 10:28 pm    Post subject: Reply to: Sequential data set modification date
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rereading the post...
for a sequential dataset most probably the modification date is the creation date
update in place is not common
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dick scherrer

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PostPosted: Wed Apr 29, 2009 12:46 am    Post subject:
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Hello,

If the sequential dataset was created 5 months ago, i doubt that you will be able to process the volume of smf data needed to go back that far. . .

Suggest you re-think how valuable this information might be versus the overhead required to retrieve it.
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Pedro

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PostPosted: Wed Apr 29, 2009 2:21 am    Post subject: Reply to: Sequential data set modification date
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Not sure how universal this is...

HSM will take a backup after a dataset is modified. Issue:
Code:
HLIST  DSN(my.seq)  BOTH

And it will give you a rough estimate of when the last change was made.
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expat

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PostPosted: Wed Apr 29, 2009 11:34 am    Post subject: Re: Reply to: Sequential data set modification date
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Pedro wrote:
Not sure how universal this is...
HSM will take a backup after a dataset is modified. Issue:
Code:
HLIST  DSN(my.seq)  BOTH

And it will give you a rough estimate of when the last change was made.

Good avenue to explore. But ...... it does depend largely on the storage polices in place.

I have worked at some wierd places when it came to backup / recovery strategies. Some shops do not use HSM for production backups. Some perform backups daily.

Also, DFdss can be used as a backup and then reset the VTOC bit at end of backup.

I would suggest that the OP has a chat with the storage group and see what they can find out, and with any luck a result.

SMF records are not always accurate. A file may be opened for output (SMF type 15) but not actually written to. One of the reasons that many shops do a delete dataset at the start of the job, create the dataset in flight is to have accurate creation data.
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