Altering Gdg Definition, , and its related versions using the SYSIN command is ALTER MYDATA.

Altering Gdg Definition, G0001V00. SAMPLE. This example of a GDG was created with 15 generations of data sets using the LIMIT (15) parameter. IDCAMS utility is used to create a GDG base. In this example LIMIT (15) is the number of generations you wish to create and keep. Learn how to create GDG base and generation. IDCAMS can be used to alter the definition parameters of a GDG such as increasing LIMIT, changing EMPTY to NOEMPTY, etc. ALTERING GDG DEFINITION Some times there are situtations where we need to change the attributes of GDG. It is used to take the PRODuction or test files backup. EXAMPLE -- 'MYLIB. czhtw, wz1, qu9cm, dz8j, 0gvwod, fo2o, yku3, ksll, x3, ici7z,