MVSFORUMS.com

Cogito-Ergo-Sum

Hi all,
I have always kown that the G0000V00 part of a GDG is a combination of generation number and version number. But, this http://www.felgall.com/mvs3.htm link calims otherwise.

The IBM manual clearly names the G0000V00 part of a GDG as a combination of generation number and version number. Also, there is no mention whatsoever in the IBM manual of a multi-volume dataset automatically raising the Vmm part of GnnnnVmm.

Don't you think what the link claims is incorect?
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taltyman · Posted: Mon Feb 16, 2004 8:31 am Post subject:

I've always considered the Voo part to be used (incremented) when a GDG has a generation that is screwed up. Typically it isn't the (0) generation as that one can simply be deleted/recreated. Never heard of it being referred as some kind of volume identifier. Of course there's lots that I don't know.

Cogito-Ergo-Sum · Posted: Mon Feb 16, 2004 8:39 am Post subject:

Taltyman,
Exactly the notion that I had; until that link was forwarded to me by a colleague of mine. I have never heard as much as a whisper in these fora about Vmm being a volume identifier. Also, the IBM manual does not mention about volume identifiers.

The link also mentions how a multi-volume dataset is referred by a volume identifier. Whatever does this mean?? Do I get to access the dataset in parts and pieces depending on the volume identifier I give?? Rolling Eyes

I am planning to put in some feedback in that site (if there is a facility to do so). But, I wanted to be sure. Hence, this post.
_________________
ALL opinions are welcome.

Debugging tip:
When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
-- Sherlock Holmes.

kolusu · Posted: Mon Feb 16, 2004 9:00 am Post subject:

Cogito,

I guess the author of that article is wrong.

bablack · Posted: Mon Feb 16, 2004 12:50 pm Post subject:

Cogito-Ergo-Sum · Posted: Mon Feb 16, 2004 1:02 pm Post subject:

Thank you, Bruce, Kolusu and Taltyman.

I have already reported this and given the IBM manual link to that site. Maybe some corrective action will be taken.
_________________
ALL opinions are welcome.

Debugging tip:
When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
-- Sherlock Holmes.

Cogito-Ergo-Sum · Posted: Tue Feb 17, 2004 12:52 am Post subject:

FYI...

I got a reply from the Webmaster.

As per him, the Vmm part was actually intended for volume identifier since some couple of decades ago when multi-volume dataset was in vogue. But, as this no more of a generality now, Vmm part is now referred to as version identifier.

Thus, that particular page on the site has now been updated to show both the "historic" and current usage of Vmm part of GDG absolute name.
_________________
ALL opinions are welcome.

Debugging tip:
When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
-- Sherlock Holmes.

bablack · Posted: Tue Feb 17, 2004 8:53 am Post subject:

Cogito-Ergo-Sum · Posted: Tue Feb 17, 2004 9:45 am Post subject:

I was doubtful too. But, when someone (the webmaster) with couple of decades' experience speaks, it is bit difficult to contest the claims.
_________________
ALL opinions are welcome.

Debugging tip:
When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
-- Sherlock Holmes.

Maton_Man · Beginner Joined: 30 Jan 2004 Posts: 123 Topics: 0

Sounds to me like site-specific naming practices rather than architectural design by IBM.

He is wrong from the latter point of view for a variety of reasons.
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