On Thu, 14 Sep 2006 17:13:39 -0500, Tom Harper wrote: >It has become apparent to us that the large block interface (LBI) for >tape data sets does not appear to be supported by IDCAMS nor DF/SORT. I >can find no reference in the documentation of these products for it.
Maybe you weren't looking in the right places? PARM = 'SDB=LARGE' LARGE specifies that DFSORT is to use the system-determined optimum block size for an output data set when its block size is zero. SDB=LARGE allows DFSORT to select a block size greater than 32760 bytes for a tape output data set, when appropriate. The above is from the DF/SORT Application Programming Guide for z/OS 1.6 so the support is documented back at least that far. (SyncSort has similar support, by the way; I looked that up for my own purposes earlier this week.) DF/SORT additionall supports SDB=LARGE via OPTION statement. SyncSort also has its similar alternative. LBI is limited to tapes, not DASD. (Too bad - I would like to see the 3390 geometry disposed of at long last. 3390's track length is getting cramped.) -- Tom Schmidt Madison, WI ---------------------------------------------------------------------- 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
