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
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