John, I have not "tried" this (I don't' have a system to try it on) - but what do you think the JCL Reference Manual (not User Guide) means, when it says,
"Code the DCB parameter, if needed. If the program does not supply all the data control block information, make sure that the DCB parameter supplies the missing information." Under "Parameters on DD DUMMY Statements" at: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2b650/12.24.2 Similarly, the first and 2nd examples at: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2b650/12.24.6 seem to be making a distinction between when "other parameters" are just checked and when they are used - and it especially says, "DD statement IN1 defines a dummy data set. The DCB parameter supplies data control block information not supplied in the program. Without it, the step might be abnormally terminated." "john gilmore" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Before you draw any large conclusions about the equivalence of DUMMY and > DSN=NULLFILE from your invesatigations, let me strongly suggest that you > separate the JCL parse and its associated error messages from what happens > afterwards. You are drawing conclusions from epiphenomena. > > In the matter of my being beaten up, I think you should try. > > John Gilmore > Ashland, MA 01721 > U.S.A. ---------------------------------------------------------------------- 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

