What is a GDG? How is it referenced? How is it defined? What
is a MODELDSCB?
Answers were Sorted based on User's Feedback
Answer / krithiga hari
Generation Data Groups or GDGs are a group of data sets
which are related to each other chronologically and
functionally.
Generation 0 references the current generation.
Generation -1 references the generation just before the
current generation.
Generation +1 references the generation just after the
current generation.
MODELDSCB is a model prototype which contains the
specification for the DCB subparameters for all data sets
that will belong to the GDG. Each time a data set belonging
to that GDG is created, it will use the DCB subparameters
specified in the model prototype.
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / guest
GDG stands for generation data group. It is a dataset with
versions that can be referenced absolutely or relatively. It
is defined by an IDCAMS define generation datagroup execution.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / guest
GDG is Generation data groups to maintain versions of a
file.It can be daily, monthly or early. This will be
created using IDCAMS with no of version of the GDG.
MODELDSCB is the one we can use some other GDG as a model
to create a new GDG.
Is This Answer Correct ? | 0 Yes | 0 No |
What is JOBLIB ?
how you can access an uncataloged dataset in a JCL?
what is DSN in JCL and what are the parameters to declare the DSN?
What are the parameter we cannot use in procedure? How many instream we can write in single jcl?
Is their any limit for data sets?
Suppose there are 10 steps in a PROC, I want to execute only step5. How do you give the condition in the JCL that calls this PROC?
how to identify a vasam dataset by seeing in 3.4(browse)
We have an output dataset in job with disp parameter as SHR. Can we write data in that file dataset?
How does jcl act on a cobol code?
Explain the hierarchy levels in jcl?
How to rename a VSAM file as well as it's index file?
Can I concatenate various datasets whose organization are different from each other. Lets say I want to cancatenate a PDS file, a PS file, a GDG file etc. Can You do that ?? If yes, how ? is there any separate Utility to do so ???