--- You wrote: What I would like to know is: Where is the difference between DSN=NULLFILE and DUMMY which Mr. Gilmore asserts (assumes?) ? ~ With kind Regards |\ _,,,---,,_ ~ ZZZzz /,`.-'`' -. ;-;;, ~ Volker Bandke |,4- ) )-,_. ,\ ( `'-' ~ (BSP GmbH) '---''(_/--' `-'\_) --- end of quote ---
I haven't tried this for several decades, but a DD DUMMY under MVT would always work, whereas a DSN=NULLFILE required a valid unit, etc. to avoid allocation failure. I found this out the hard way when I had a program that allocated a direct 327x, and I had to find a convenient way to override the allocation in a PROC (I used the BLKSIZE to request alternate allocation: 0 for SYSIN/SYSPRINT simulation, 5 for VTAM, etc.). I'd guess that in an SMS system all bets are off? Gerhard Postpischil Bradford, VT ---------------------------------------------------------------------- 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
