-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of ??? ?? ??? Sent: Wednesday, December 31, 2008 5:56 AM To: [email protected] Subject: Syncsort Oddity
Hi, =20 I=92ve encountered something in Syncsort, and I=92m looking for an = explanation. =20 One of our users used Syncsort to copy a dataset. The input file had 93386 tracks in 10 extents. The output file had 64815 tracks in 2 extents. Both files are LRECL=3D27904 BLKSIZE=3D27998 RECFM=3DVB = DSNTYPE=3DLARGE. The copy job used Syncsort=92s SDB=3DON option =20 Both are allocated on the same type of DASD (3390-54).=20 When we say the 30% difference in size we used IEBCOMPR to compare the = two file, and the result was that they were identical. <SNIP> I know that you have said RECFM=VB. But, is it possible that Syncsort is writing short blocks to make use of otherwise wasted space on a track? I'm asking because we have run into a similar problem and I do not have access to the DASD in question to do track dumps. Regards, Steve Thompson ---------------------------------------------------------------------- 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
