I don't consider the problem interesting enough to try the experiment, but I think you are mistaken. I am relatively certain that
- DCB= is *not* ignored when coded with DUMMY. Witness the original question. There was a functional difference between DUMMY,BLKSIZE=129 and DUMMY,BLKSIZE=0. - There is no functional distinction between DUMMY and DSN=NULLFILE. The JCL manual quote that I cited in my uninteresting post would seem to confirm that. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of john gilmore Sent: Friday, May 27, 2005 3:35 PM To: [email protected] Subject: Re: DUMMY and BLKSIZE I did not reply to Charles Mills because I did not judge his post interesting. Let me, however, rehearse what I said originally at greater length. Coding DUMMY has the effect that everything following it is ignored, no DCB information is retained. Coding DSN=NULLFILE,DCB=... permits NULLFILE to be overridden and the retained DCB info to be used. This is an old distinction, but it has not gone away. I have just verified that it is still operational. ---------------------------------------------------------------------- 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
