gdg version increment

anuradha · Posted: Tue Jan 06, 2004 10:12 pm

HI

,

I HAD A DOUBT ON GDG VERSION FROM SO MANY DAYS.NO ONE IS ABLE TO CLEAR MY DOUBT.MY DOUBT IS HOW CAN WE INCREMENT THE VERSION OF A GDG.PLEASE CLARIFY THIS.

THANKS AND REGARDS
ANURADHA

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi ANURADHA,

When you say "version" I'm assuming you mean the Vnn portion of the
GnnnnVnn extension of the full GDG name.

To change the V00 to V01 you must create a new version of the dataset and code the full DSN using the same Gnnnn, but changing the Vnn. When this is done the old (V00) version is deleted and replaced by the new (V01) version. The new version will assume the same position in the GDG as the original version.

Only pne version of a generation is allowed to exist at any given time.

HTH, Jack.

anuradha · Posted: Wed Jan 07, 2004 2:12 pm

hi jack,

Still i had some doubt on that.If i need to keep the old version details where can I keep.I mean to ask if I require to maintain all details how can I

. Even though we have 99 versions we can maintain only one version at a time for a gdg

.Then wats the fun of having 99 versions

.please clarify my doubt.

THANKS AND REGARDS
ANURADHA

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi ANURADHA,

1 - I guess you can copy it first to an "error stuff" dataset. Don't blame me, I didn't design it.

2 - Yes, the idea is (I guess) that the Version is used for correcting errors in the previous version and replacing it with the clean version. That means that you're limited to 99 mistakes. 8)

3 - Who said dataprocessing was fun?

Regards, Jack.

anuradha · Posted: Thu Jan 08, 2004 10:12 am

hi

,

thanks a lot jack.hey,i am not blaming any one.how can i? i myself is a beginner in this. but i am very sincere learner in this.so out of curiosity iam asking all this doubts.anyway thanku again for clearing JACK.

THANKS AND REGARDS
ANURADHA

Sharan · New User Joined: 22 Dec 2003 Posts: 6 Location: Banaglore

Hi Jack and Anuradha,

I just have a couple more questions to this thread of conversation.

Now let us assume there are 5 versions of a GDG that are created ,the final one being FILE1.G0005V00. Now I wish to change my version from 00 to 01 to the last version, changing which the last/latest version would be FILE1.G0005V01.If this is the case what would be the version of the next subsequent GDG that is created? would it be FILE1.G0006V01 or FILE1.G0006V00.

Lets assume that while creating a GDG base the attributes were NOSCRATCH and NOEMPTY ,so when the limit is reached the oldest generation is Uncataloged and not deleted.Now if I wish to access the uncataloged GDG Memeber would it be possible for me, if I explicitly mention its absolute number.

Thanks in advance,

Sharan

sandip_datta · Posted: Mon Jan 19, 2004 7:29 pm

I think using CYC(+) we can increament the GDG version;at least in our shop we do this in this way. It would also keep the older versions. no of versions depend on how the GDG is defined ?

Regards,
Sandip.

anuradha · Posted: Mon Jan 19, 2004 7:45 pm

hi sharan,

if iam not wrong, you will get FILE1.G0006V00 when you create next subsequent gdg.you can change the version of this generation only by hardcoding it.so for one generation there are 99 versions(limited to 99 mistakes

).

Thanks,
Anu

Sharan · New User Joined: 22 Dec 2003 Posts: 6 Location: Banaglore

Hi,

Thanks for the answer, but I am not sure about the syntax or how to use CYC(+). It would be great if you could illustrate CYC(+) with an example. I was'nt able to find any information about CYC in the "quick refernce" either.Does this mean that CYC(+) is shop specific????

Thanks,
Sharan

gowtham_srgp · New User Joined: 09 Jun 2005 Posts: 38

senti · New User Joined: 18 Aug 2005 Posts: 19

Hey Goutham, I have few questions,

- As u said, you can have only upto 255 gdgs.So, After gen# G9999V00 you will not find gen# G0001V00 to change its version number.So not sure how the version number will be automatically changed.
- When i tested, i saw that u get G0001V00 after G9999V00 ( as expected tho

)

Please refer to comments by 'mmwife' which i think is correct.

die7nadal · Active User Joined: 23 Mar 2005 Posts: 156

Sharan,

ashwinreddy · Posted: Fri Aug 26, 2005 2:42 pm

Hi all,

I have some doubts after all the coversation on version.

As Jack had sent that we can change the version by changing V00 to V01 with full DSN name but when we do this we can increase the version of only one generation.

Eg: My GDG name is JLL.ALLOC.PATTERN.BACKUP

and if i want to increase the version i can do JLL.ALLOC.PATTERN.BACKUP.G0001V00 to JLL.ALLOC.PATTERN.BACKUP.G0001V01.

but i may have a lot of generations in a single version.
Do i have to change them seperatly.

I feel when the limit of the gererations is reached i.e 9999 the version is automatically increased

This happens when we give GDG parameters as EMPTY and SCARCH
and go on increasing the generations until you reach 9999 limit.
but i never faced any situtations of increasing the version and i never seen a GDG with Version V01

This is only a guess and i am not confident.
If any corrections welcome.

Thanks & Regards
Ashwin

superk · Posted: Fri Aug 26, 2005 3:42 pm

Ashwin, take a look at the "z/OS V1R6.0 DFSMS: Using Data Sets" manual, Chapter 29 "3.10 Chapter 29. Processing Generation Data Groups":

publibfp.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/dgt2d430/CCONTENTS

This is a copy of the text: