David's suggestion is a good one (unless someone knows a time when it could be zeros and not indicate a DD DUMMY file).
TIOEFSRT is a GUPI field - although that doesn't always mean you can be assured of its usability in the future. Tony Lubrano Product Author NEON Enterprise Software, LLC. p: 281 207 4922 f: 281 207 4973 [email protected] What is zPrime? Find out at www.zprime.com or just ask us! -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Jousma, David Sent: Friday, February 12, 2010 1:47 PM To: [email protected] Subject: Re: Determining if DUMMY allocation This is how we do it DDCHK CLC TIOEFSRT,=AL3(0) Q. REAL UCB ADDRESS ? BE DDBAD A. NO, BAD DD We test for the presence of DD DUMMY concatenated in the middle of a SORTIN concatenation in ICEIEXIT. If it is there, DFSORT drops all records after DD DUMMY, and still finished RC(0) _________________________________________________________________ Dave Jousma Assistant Vice President, Mainframe Services [email protected] 1830 East Paris, Grand Rapids, MI 49546 MD RSCB1G p 616.653.8429 f 616.653.8497 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of J R Sent: Friday, February 12, 2010 12:45 PM To: [email protected] Subject: Re: Determining if DUMMY allocation > 1.) Scan the TIOT... finding your DDName... If you're looking in the TIOT, what does TIOESTTB/TIOEFSRT show for a DUMMY allocation? > Date: Fri, 12 Feb 2010 10:46:36 -0500 > From: [email protected] > Subject: Re: Determining if DUMMY allocation > To: [email protected] > > Agreed Rob. > > However, to further respond to Charles' question, for a low overhead or non-SVC solution, > > 1.) Scan the TIOT... finding your DDName... > 2.) Use the SVA (SWAREQ) to find the JFCB > 3.) The JFCB data set name contains "NULLFILE" for both NULLFILE and DUMMY files. > > Tony Lubrano > Product Author > NEON Enterprise Software, LLC. > p: 281 207 4922 f: 281 207 4973 > [email protected] > > What is zPrime? Find out at www.zprime.com or just ask us! > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Rob Scott > Sent: Friday, February 12, 2010 9:07 AM > To: [email protected] > Subject: Re: Determining if DUMMY allocation > > Tony > > Minor niggle - but shouldn't that be? : > > DEVTYPE =CL8'MYDDNAME',OUTAREA > IF (LTR,R15,R15,NZ) > *** DD Not allocated *** > ELSEIF (OC,OUTAREA,OUTAREA,Z) > *** DD DUMMY SPECIFIED *** > ENDIF , > > > > > Rob Scott > Developer > Rocket Software > 275 Grove Street * Newton, MA 02466-2272 * USA > Tel: +1.617.614.2305 > Email: [email protected] > Web: www.rocketsoftware.com > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tony Lubrano > Sent: 12 February 2010 14:55 > To: [email protected] > Subject: Re: Determining if DUMMY allocation > > Charles, > > You can do a DEVTYPE macro to determine if the file is DUMMY or NULLFILE... the returned area is low-values: > > DEVTYPE =CL8'MYDDNAME',OUTAREA > IF (LTR,R15,R15,NZ) > *** DD Not allocated *** > ENDIF , > IF (OC,OUTAREA,OUTAREA,Z) > *** DD DUMMY SPECIFIED *** > ENDIF , > > OUTAREA DS D > > Tony Lubrano > Product Author > NEON Enterprise Software, LLC. > p: 281 207 4922 f: 281 207 4973 > [email protected] > > What is zPrime? Find out at www.zprime.com or just ask us! > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Charles Mills > Sent: Friday, February 12, 2010 8:46 AM > To: [email protected] > Subject: Re: Determining if DUMMY allocation > > > look in the TIOT > > Where? > > Charles > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Shmuel Metz (Seymour J.) > Sent: Thursday, February 11, 2010 9:03 PM > To: [email protected] > Subject: Re: Determining if DUMMY allocation > > In <013801caab27$c57da320$5078e9...@org>, on 02/11/2010 > at 06:37 AM, Charles Mills <[email protected]> said: > > >Is there a way to determine if a DD statement has been allocated DUMMY, > >short of SVC 99 info retrieval? > > Before OPEN, use DEVTYPE or look in the TIOT. _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/201469228/direct/01/ ---------------------------------------------------------------------- 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 This e-mail transmission contains information that is confidential and may be privileged. 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