> -----Original Message----- > From: IBM Mainframe Discussion List On Behalf Of R.S. > > I dared to get all the objections together combined with some mines: > > Disadvantages: > 1. New feature - people still think that way <vbg> > 2. Former requirement for SMS-management > 3. "New" keyword to create PDSE (DSNTYPE) > 4. Cross-sysplex sharing > 5. Cannot hold both data and programs (and no visible clue what's the kind > 6. LPALST, LNKLST restrictions > 7. Quite recent changes (address spaces) - look like "work in progress" > 8. PTFs > 9. With fe exceptions (listed below) no visible advantage. Long names > are not usable in JCL or ISPF (where they are usable?). Load module size > is limit rarely a problem. New program format is not an advantage itself. > 10. As above: 64k TRKs limit relieved, but ther's still single vol > restriction. > 11. Still many datasets cannot be PDSEs. > 12. Performance can be worse than PDS. > 13. Secret documentation. BTW: It is horrible that basic function as > "get_dataset_size" is kept secret for regular users! > 14. 4k block boundary for members can consume more space than regular PDS > > Advantages: > 1. No need to compress > 2. 123 extents > 3. No 64k TRKs limit > 4. Cannot be destroyed when open for output as PS (common mistake).
5. Counts as one extent in LNKLST regardless the actual number of extents. -jc- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html