How would GDG generation be reference

ashok_uddaraju · New User Joined: 21 Feb 2007 Posts: 72 Location: US

I have a question on GDG's.

Suppose i have 4 steps in my JCL .

Step1 --> Creates a generation of a GDG
Step2 --> Creates another generation of the same GDG
Step3 --> references generation created in step1
Step4 --> references generation created in step2

How would these generation be referenced?

Robert Sample · Posted: Fri Aug 06, 2010 5:05 pm

Step 1 (+1)
Step 2 (+2)
Step 3 (+1)
Step 4 (+2)

The rule is each new generation bumps the number by one; all steps of the same job use the same reference because the new generations are not cataloged until the end of the job.

superk · Posted: Fri Aug 06, 2010 5:11 pm

Step1 --> Creates a generation of a GDG --> this would be +1. Any other references to this dataset within the same job will continue to be +1.

Step2 --> Creates another generation of the same GDG --> this would be +2. Any other references to this dataset within the same job will continue to be +2.