IBM Mainframe Forum

I realize this is an extremely basic question, but I haven't been able to find anything by searching.

I am trying to learn JCL, including looking at some examples I have found. The following statement is describing an input file being used by the job (the input file is a sequential backup of a VSAM file):

//SORTIN DD DSN=PRDCC.TEST.SAVE2.BOOKNOTE.D.AFT(0),

Can someone please tell me what the zero in parentheses after the data set name signifies? Thank you.

The data set is a generation data group and the (0) represents the current (most recently created) generation. Look up GDG in the JCL Reference manual to learn more.

These users thanked the author Robert Sample for the post:

FAB64 (Wed Nov 01, 2017 2:05 am)