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What is a GDG
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Answer / aannie
A generation data set is one of a collection of
successive, historically related, cataloged data sets,
known as a generation data group (GDG). Each data set
within a generation data group is called a generation data
set (GDS) or generation.
? Processing Generation Data Groups
? Absolute Generation and Version Numbers
? An absolute generation and version number is used
to identify a specific generation of a generation data
group.
? The generation and version numbers are in the
form GxxxxVyy, where xxxx is an unsigned 4-digit decimal
generation number (0001 through 9999) and yy is an unsigned
2-digit decimal version number (00 through 99)
? Relative Generation Number
As an alternative to using absolute generation and
version numbers when cataloging or referring to a
generation, we can use a relative generation number.
For example, A.B.C(-1). A.B.C(+1), or A.B.C(0).
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / jegadeesan ramu
Used to keep track of the records in chronological order to
create gdg base name must be created by using IBM utility
IDCAMS
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / dhan
Generation Data Groups (GDGs) are a group of datasets related to each other by a common name.
GDG generation file is referred by a GDG base name.
Each generation data set is distinguished by others by the generation number.
https://youtu.be/hMbB20WKmBg
https://youtu.be/3N17dh7BAaQ
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Answer / ks
It is nothing but Generation data group keeps the track of
the new generations by deleting the older ones based on the
options
| Is This Answer Correct ? | 1 Yes | 2 No |
What is the error in the following JCL statements : I) //step#three exec pgm=hkbc762 ii) //step#3 exec pgm = hkbc762 iii) //step#3 exec pgr = hkbc672
What is MOD and when would you use it?
when GDG version number get changed ? bcz always Generations only increasing.
In jcl i have 255 steps. In 255 step i declared proc. In proc i have 20 steps this job is executable or not? why?
I have Job A and Job B. I want to trigger Job B from Job A. Please advise.
write a jcl to execute a job by 7:00 am on jan 20,1986?
How many positional parameters are there in job statement?
i have a jcl containing header body and trailer .in header i have viswa body 2 6 1 9 7 trailer reddy .now i need to sort only body in either asecending or descending order how can i do it
i created one base gdg with lrecl = 100 , now i need to create versions with different lrecl =150,200 can it be possible to create like tht ?
The disp in the JCL is MOD and the program opens the file in OUTPUT mode. What happens ? The disp in the JCL is SHR and the pgm opens the file in EXTEND mode. What happens ?
IN MY JCL I VE 8 STEPS I WANT TO EXCUTE STEP 8 FIRST THEN EXCUTE STEP 4 ,HOW WILL EXCUTE STEP 8 BEFORE STEP 4?
7 Answers Cognizant, IBM, IGT,
what is the difference between static call and dynamic call?
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