Gil, I saw an IBM PowerPoint via google for z/os 1.7 indicating 32k leech for sysin was new in 1.7 , so that would lead to believe it is , I would think an IBMer has to step up and verify the actual Maxmium.
Sent from my iPad Scott Ford Senior Systems Engineer www.identityforge.com On Jan 21, 2012, at 1:58 PM, Paul Gilmartin <[email protected]> wrote: > I'm trying to find documention on limits on RECFM, LRECL, and BLKSIZE > for SYSIN data sets and SYSOUT data assigned to INTRDR. I find some > terse description in: > > Title: z/OS V1R13 DFSMS Using Data Sets > Document Number: SC26-7410-11 > > 3.5.2 SYSIN Data Set > > Which states that the minimum LRECL for a SYSIN data set is 80. > It gives no maximum. 32760? Perhaps an RCF is in order. If the > information is not now available, which publication should supply > it? > > But I get lost in control blocks. I shouldn't need to be a > systems programmer to get the information I need. I find very > little useful additional information in the JCL Reference, which > mentions that LRECL is permitted on "DD *" statements, but > gives no maximum. And experiment shows that while LRECL is > syntactically allowed, it has little or no effect. > > At some point, max LRECL was probably 80, keypunch width. some time > later it may have been 254 for JES3 (I tested it). In 1995, OW10527 > attempted to relax this limit for JES2. It was such a failure that > IBM chose to regress it with by OW16774. OA08145 (NF, 2003?) mentions > "Support handling of SYSIN data with an LRECL>254", but gives no > maximum. What publication would this appear in? Would there be an > announcement letter? > > It seems there have been enough changes that the documents haven't > kept up and now contradict each other. > > Thanks, > gil > > ---------------------------------------------------------------------- > 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
