c62ap90 wrote:My original point is NEW,KEEP can be an option for some applications and since this is a forum for beginners and students it's worth learning - right?
Maybe just barely, but probably not.
Talleyrand famously said of the restored Bourbon dynasts, "They have learned nothing and forgotten nothing". There are also "Bourbon analysts", who have learned nothing and forgotten since starting their careers 20, 30, or 40 years ago. As Mr. Scherrer says, they do not have many years of experience, they have one year of experience many times.
It is actually incorrect, IMNSHO, to say, "A disposition of KEEP means that the data set is to kept on the volume but not cataloged"; it is more accurate to say, "Historically, a disposition of KEEP meant that the data set is to kept on the volume but not cataloged; on modern systems with SMS is it the same as CATLG, unless the storage class allows the data set to be placed on a non-SMS-managed volume. Doing
that without proper authorization, however, will get you fired and possibly blacklisted".