Eileen,

That's pretty much standard behavior. If the file is not opened then the
Last Reference Data is not updated.

This was the source of some incredible HSM thrashing a few years ago when a
group of users decided they did not want any of their datasets migrated. The
clever dicks would run an IEFBR14 to allocate them every morning, and HSM
would happily migrate them again every night.

Ron

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of
> Barkow, Eileen
> Sent: Monday, April 20, 2009 11:23 AM
> To: [email protected]
> Subject: Re: [IBM-MAIN] can SMS managed VSAM file be deleted while
allocated
> 
> we found the answer but it seems that something is still wrong.
> apparently, the file was under a SMS management class which checks for
> 'unreferenced' datasets older then 999 days and in the brief period that
> the started task using it was down (right before an ipl which is the
> only time it comes down), HSM decided to delete the file.
> 
>  But the question is what does SMS consider to be 'unreferenced' -
> clearly the file is getting allocated but I am not sure if it is
> actually opened (this is a vendor product and the file usage may be
> optional).
> SMS claimed that the last time the file was 'referenced' was about the
> time I think that it was created.
> 
-main.html

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