You will need to maintain compatibility with your lowest level of hardware, prime or DR.
On Wed, Jun 1, 2016 at 4:44 PM, Bill Woodger <bill.wood...@gmail.com> wrote: > Why wouldn't ARCH(11) give the best performance? V5.2 has it? Of course, has > to be for a z13. > > I'm not sure what you mean about REGION=0M. At least 200M will be needed, > more for large programs. See here: > http://www.ibm.com/support/knowledgecenter/SSQ2R2_9.0.0/com.ibm.ent.cbl.zos.doc/migrate/igymbhv.html. > If 0M doesn't get enough memory, it will need to be changed. > > ARCH for DRS/BRS is covered in the Migration Guide, and is obviously > important. > > What issue are you aware of with CANCEL from V4.2 to V5.2? > > The behaviour of STRING with the same source and target is undefined by the > COBOL Standard (1985 and later). Whether the undefined behaviour is different > with the new compiler I don't know, but it doesn't matter if it is (such code > would be unreliable under any previous IBM COBOL compiler). > > IF FIELD = ZERO is not necessarily false for 4.2 or true for 5.2, it depends. > Certainly incorrect zones in data can cause different behaviours. With PACK > and CP for a "USAGE DISPLAY" field, the zones are quietly ignored. With CLC, > that matters. Possibly with DFP, I don't know. V4.2 uses both PACK/CP and CLC > at different times depending on compiler options and whether fields are > signed. V5.2 probably has more different ways to do it. See here, > https://www.ibm.com/developerworks/community/forums/html/topic?id=22ae65fe-5199-426a-bc61-3cc340d726c2&ps=25, > for some discussion. > > On Wednesday, 1 June 2016 20:16:37 UTC+2, Salva Carrasco wrote: >> - Test(DWARF): Increase size in library but not in memory, debug data is >> only loaded at error/abend time. >> - Best CPU usage if using Arch(9/10) on execution. >> - Worst compile CPU/Time/Storage. REGION=0M, IEFUSI, ... >> - Take an eye on latest maintenance, specially LE. >> - Be aware of Arch level for your BRS site. >> - Be aware of CANCEL sentence for mixed 4.2 & 5.2 Cobol load modules. >> . Be aware of STRING sentence when using same source & target data field. >> - Be aware of low-values decimal zones. IF FIELD = ZERO, false for 4.2, true >> for 5.2. Look at ZONEDATA *new* option. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu 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 lists...@listserv.ua.edu with the message: INFO IBM-MAIN
