What about record sequence within datasets ?
If it remain unchanged, then it is not really chronological order.

--
Radoslaw Skorupka
Lodz, Poland


Ray Mullins wrote:

Hello Mary,

Go to http://www.cbttape.org/ and look for a program called GDGCOPY in File
#482.  That program copies a GDG in "reverse" order, that is,
chronologically.

There are lots of good little tidbits at that website.

Best regards,
Ray

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Groebner, Mary
Sent: Monday August 29 2005 13:43
To: IBM-MAIN@BAMA.UA.EDU
Subject: Processing GDG datasets in chronological order

Hi all,



 First time poster (to this list anyway) here.



I have a question that perhaps someone out there has already encountered and addressed. What I need to do is process all existing generations of a GDG each time a given job runs. The number of generations processed will vary, and so, of course would the absolute generation numbers. I know that if I simply code the DD statement so that it refers to the GDG base, I will pick up all the existing generations of that GDG. The problem I face is that, when you code a DD statement this way, it processes the GDGs in reverse chronological order (newest to oldest) but the software that I need to process these GDGs through requires that they be in order of creation (oldest to newest). I know I can write a program that'll keep track of which GDG's I've processed in some sort of control file and/or dynamically create the JCL each time that way, but I'm wondering (hoping) for a more transparent (and easier to maintain and/or pass on) solution.


 Any ideas?  Thanks in advance.


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