Why would I be forced to code DSNTYPE=LARGE, rather than using the WRKSEC=Y parameter in SORTCNTL along with //SORTWKnn DDs with secondary allocation specified? I am also curious about the SEC=nn parameter, as well.
For my interests, I have chosen DSNTYPE=LARGE, however one still must remember the 16 extent per volume limitation, so it's oh so important to code a sufficiently large enough secondary amount (and/or primary as well) so that a one-volume allocation can even exceed the 65K track limitation and still be within 16 extents. Scott Barry SBBWorks, Inc. On Tue, 1 May 2012 15:52:41 -0400, David Betten <[email protected]> wrote: >Just to clarify, DFSORT can cetrainly use more than the 1st extent, it just >can't use multiple volumes. As long as DSNTYPE=LARGE is coded on the DD >statement, each of the SORTWK DDs should be able to use multiple extents. >Since a 3390-9 has a capacity of 10,017 cylinders, you should be able to >get 3 extents of 3335 cylinders on each work data set if the volumes are >empty. > >> From: Neil Duffee <[email protected]> >> To: [email protected], >> Date: 05/01/2012 03:14 PM >> Subject: Re: Confused on DFSORT SORTWK >> Sent by: IBM Mainframe Discussion List <[email protected]> >> >> In addition to all the other responses you got regarding DynAlloc, I >> wanted to add the nudge that DFSORT only uses the **1st** extent in >> SortWk DD statements. Thus, SPACE=(CYL,(3335,3335)) is the same as >> SPACE=(CYL,3335) which, in your example, only got you 10*'3335 >> cylinders or the equivalent to 10 mod-3s. So you'd need to have 27 >> DD statements to use your entire pool. >> >> --------> signature = 6 lines follows <-------- >> Neil Duffee, Joe Sysprog, uOttawa, Ottawa, Ont, Canada >> telephone:1 613 562 5800 x4585 fax:1 613 562 5161 >> mailto:NDuffee of uOttawa.ca http:/ /aix1.uOttawa.ca/ ~nduffee >> "How *do* you plan for something like that?" Guardian Bob, Reboot >> "For every action, there is an equal and opposite criticism." >> "Systems Programming: Guilty, until proven innocent" John Norgauer 2004 >> >> >> -----Original Message----- >> From: Mark Pace [mailto:[email protected]] >> Sent: April 27, 2012 08:43 >> Subject: Confused on DFSORT SORTWK >> >> Trying to sort a fairly large RMF data file. 20,000 + cylinders. >> I keep running out of SORTWK space. I have 9 3390-9 volumes in my >> SMS temporary storage pool. But I just noticed that no matter how >> many SORTWKxx DDs I add it only allocates file on the first 5 temp >> storage volumes. >> Anyone have an idea how I make DFSORT use more volumes? >> >> //SORTWK01 DD DISP=(NEW,DELETE),UNIT=SYSDA,SPACE=(CYL,(3335,3335)) >> [snip] >> >> ICE046A E SORT CAPACITY EXCEEDED - RECORD COUNT 2459859 >> [snip] >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO IBM-MAIN >> > > >Have a nice day, >Dave Betten >DFSORT Development, Performance Lead >IBM Corporation >email: [email protected] >1-301-240-3809 >DFSORT/MVSontheweb at http://www.ibm.com/storage/dfsort/ >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
