Interested to Buy Any Domain ? << Click Here >> for more details...
What is a GDG
- 4 Answers
- 18965 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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
| Is This Answer Correct ? | 1 Yes | 0 No |
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 |
Suppose I have five jobs to do. But I want to hold one?
how to convert a file form fixed Length to variable length?
What will happen if you attempt to restart a job in the middle of a JCL // IF .... // ENDIF?
how can i code cond parameter in procedures ? i have a jclk calling a proc which has 10 steps i want to execute from step 5 to step 10 where can i code restrat parameter or cond parameter for ths
In my JCL 10 Steps Will Be there Now i want to execute step05 And step06. How to Give the Cond?
How do you access a file that had a disposition of KEEP?
How many extents are possible for a sequential file ? For a VSAM file ?
What is the purpose and meaning of the TIME keyword and what JCL statement is it associated with?
There are 2PROCS in a JCL. I want following conditions to be carried out 1) 1st PROC should be executed as such In second PROC 2) First 4steps should not be executed 3) 5th step should not be executed 4) 6th and 7th step should be executed The change should be done only in the JCL and PROC should be untouched ?
I have one GDG. Everyday One new version is being created.Now I want to split this created version in different files each having 1000 records. Here Problem is I don't know How many records will be there in new version of GDG? that's why I don't know How many Out files we need to use . Interesting??????????????
i have step1,step2,step3 from where can i start coding cond parameter ?
What is the difference between static call & Dynamic call ?
COBOL 
