Norbert, Thanks. I never made the connection between this and reorganization.
However, I still believe IDCAMS REPRO with BUFND of one CYL will outperform DFSMSdss. A wild arsed guess is that DFSORT COPY with the same BUFND will have the same performance as REPRO because they are both using the same mechanism, VSAM, to read and write the reorganized KSDS. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of > Norbert Friemel > Sent: Thursday, October 21, 2010 4:37 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: [IBM-MAIN] DFDSS VSAM logical restore? > > On Wed, 20 Oct 2010 14:43:49 -0500, John McKown wrote: > > >A dummy question. When I do a VSAM logical dataset restore using DFDSS, does > >it do a reorganization of the data? I would think so, but I cannot find it > >in the manual. This would be from a logical dump. > > Yes, a VSAM KSDS dataset is reorganized if restored from a logical dump with > "VALIDATE" (default). There's a hint in the manual (note 3): > http://publibz.boulder.ibm.com/cgi- > bin/bookmgr_OS390/BOOKS/DGT2U281/2.3.10.5.49?SHELF=DGT2BK91&DT=2010011209584 9# > HDRR2340 > > Norbert Friemel > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
