What is a GDG
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
? 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
|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.
|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
|Is This Answer Correct ?||1 Yes||2 No|
what happens in conversion stage in job processing?
what is the general use of PARM? Give an explanation about the system defined parameters that could be passed through this PARM like XREF,LIST,LET,APOST,RENT etc..
What is a Proc ? why do we go for a Proc ? What are the types of procs?Can we have nesting in Procs ?
how to compress the data set
What is the purpose of dd?
How do you restart a step in JCL?
is it possible to submitt more than one job in job card in jcl? and if yes than is it necessary to have the jobs same name?
What does it mean by Restart and Checkpoint in JCL ? How are checkpoints being taken and what is their usage ? How to use Checkpoint macro on a JOBSTEP ?
How system will identify whether user wants to create PS or PDS? If answer is SPACE parameter then why we need to pass ps or po as dataset organisation while creation
Could anyone please suggest me what is the maximum length of data that can be pass as input in //sysin dd * This was asked in interview. TIA
What is meant by S0C7 system abend code?
Explain the purpose of dd dummy statement?