Probably however big you want to define the lrecl of the PDS you submit the job from. Used to be you could not edit datasets with LRECL over 251, so that was the limit. 32760 is probably the limit nowdays. I know in the mid 80s I did 255 lrecl from ROSCOE.
I needed a sequential dataset for a list of volume, and could not create a lrecl under 10 bytes. On Sat, Jan 21, 2012 at 12:58 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 -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
