In a recent note, john gilmore said: > Date: Tue, 31 May 2005 15:16:36 +0000 > > Once written within a procedure neither of the DD statements > > //<ddname> DD DUMMY > > or > > //<ddname> DD DUMMY, . . . > > can be altered into one that in fact is functional, permits non-null > outputs to be written or non-null inputs to be read. > Thanks! I hadn't considered that. Now I'll know better.
> address the other, in my view more important, question of what is put into > control blocks. > And on this question, I have yet no empirical evidence that, for example, "DUMMY,DCB=..." behaves any differently from "DSN=NULLFILE,DCB=..." I'm inclined to believe that the writers of the JCL manual were not as adept as you at boolean algebra, and wrote text with incorrect logical consequences. -- gil -- StorageTek INFORMATION made POWERFUL ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
