On Thu, 15 Sep 2016 07:01:42 -0400, John Eells wrote: > >The MVS restriction stems from the need to name PDS members starting >with an alphabetic or national character, as all users were originally > That "need" is largely a superstition. Consider the following from an ISPF member list, retouched only to obfuscate HLQ.
DSLIST User.TEMP.MIXED.CASE.LINKLIB Row 0000001 of 0000013 Command ===> Scroll ===> CSR Name Prompt Alias-of Size TTR AC AM RM _________ .FooBar 00000008 000117 00 24 24 _________ +1 00000008 000127 00 24 24 _________ $FooBar 00000008 00010F 00 24 24 _________ Foo.Bar 00000008 000211 00 24 24 _________ Foo+Bar 00000008 000137 00 24 24 _________ Foo$Bar 00000008 000219 00 24 24 _________ Foo*Bar 00000008 000147 00 24 24 _________ Foo-Bar 00000008 00013F 00 24 24 _________ Foo/Bar 00000008 000201 00 24 24 _________ Foo_Bar 00000008 00012F 00 24 24 _________ Foo=Bar 00000008 000209 00 24 24 _________ 0FooBar 00000008 000107 00 24 24 _________ 1234 00000008 00011F 00 24 24 **End** All generated by a common z/OS utility with documented options. No assembler, Rexx, or user written code; only control statements. I'll grant that some of these member names might be problematic when used with some facilities such as JCL or UNIX shell. >represented by one or more members of the User Attribute Data Set >(UADS). User IDs defined in RACF today can also be defined in UADS, so >the restriction remains. > >The 7-character length restriction comes from the same source. Users in >UADS have one or more members in that data set, depending on its block >size and the number of attributes in their user entries. The last >character is numeric, so someone with a lot of attributes might have >UADS members USERID0-USERID9. This causes the last character to be >"reserved," and as PDS members may have 1-8 character names, TSO/E user >IDs can be 1-7 characters in length. > So why not relax the 7 character restriction for customers who are willing to commit to relying on RACF and forgoing UADS? ISPF and TSO SUBMIT don't require a user ID prefix. I rarely use that; 8 characters are too precious to squander on redundant information. The TSO OUTPUT command? How many still rely on that in preference to SDSF or (E)JES. I suppose one at each site. Sigh. Does the SMP/E interactive "Command Generation" still issue "OUTPUT" after submitting a job? It won't find mine. On Thu, 15 Sep 2016 12:09:12 -0500, Tom Marchant wrote: >On Thu, 15 Sep 2016 14:41:20 +0800, Timothy Sipples wrote: >>The O in TSO is "Option," after all. > >Yes, AFAIK TSO is still an acronym for Time Sharing Option. Big deal. >TSO was an option for OS/MVT. It never was an option for MVS. > Right! Imagine the reaction from significant customers if IBM were to announce that the follow-on to z/OS 2.2 would eliminate TSO or even make it a separately (highly) priced option. But some might benefit by eliminating TSO from most LPARs. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN