On 11/29/2013 3:00 PM, Paul Gilmartin wrote:
It should be easy to relax the 8-character maximum (except, perhaps on the HLQ) without incompatibility with existing data areas, even was done for the antetypical 5-level maximum.
This could be done except for TSO, due to unfortunate dependences on both the high and low portion of the data set name. The designers, in their infinite wisdom, chose to define the PSCB to contain a 7-byte user id (or user specified prefix), followed by a one byte length. For OS/360 MVT, the Technion had zaps to get around the limitation (Shmuel may have a better idea just how many modules they modified). For the last level, TSO EDIT and possibly other programs, rely on a table of data characteristics by name (e.g., DATA, CNTL) that also would require changes.
Gerhard Postpischil Bradford, Vermont ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
