My misty memories say yes - the last char was used in chaining multiple entries based on the first 7.
Jerry Whitteridge Manager Mainframe Systems & Storage Albertsons - Safeway Inc. 925 738 9443 Corporate Tieline - 89443 If you feel in control you just aren't going fast enough. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Lizette Koehler Sent: Thursday, September 15, 2016 10:33 AM To: [email protected] Subject: EXTERNAL: Re: TSO User ID Rules (Was: z/OS and code pages) Did the reason for the 7 char TSO HLQ come from the UADS process needing the last char in the member name to chain the information for a given TSO ID in SYS1.UADS (think ACCOUNT Function)? Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Mike Schwab > Sent: Thursday, September 15, 2016 10:19 AM > To: [email protected] > Subject: Re: TSO User ID Rules (Was: z/OS and code pages) > > The TSO ID is used as a HLQ for data set names. Therefore it must meet the > rules for MVS Dataset names: first character A-Z@#$, second to seventh > character A-Z@#$0-9, max 7 due to PDS member needing 8th character. Minimum > length determined by site. > > On Thu, Sep 15, 2016 at 11:19 AM, Tony Harminc <[email protected]> wrote: > > On 15 September 2016 at 02:41, Timothy Sipples <[email protected]> wrote: > >> Tony Harminc wrote: > >>>What, in this context, is an MVS subsystem? ...And where is this text > >>>from -- evidently not the RACF Security Administrator's Guide? > >> > >> You are allowed to take a look at the Administrator's Guide. :) > > > > I already had, and the phrase "MVS subsystem" does not appear in that book. > > > >> But here's a copy/paste: > >> > >> "TSO and MVS also require that the first character of user IDs be > >> uppercase A - Z, # (X'7B'), $ (X'5B'), or @ (X'7C')." > > > > That says nothing about "subsystem". You appear to have inserted the > > word, and I'm just trying to understand why and with what meaning. > > > >> So what does "MVS" mean in this context? The Administrator's Guide > >> doesn't say. "Not z/OS UNIX System Services" is a reasonable answer, > >> but it might be a partial one. > > > > I obviously wasn't clear: It's the "subsystem" part I'm asking about, > > not the "MVS" part. I know at least a couple of meanings of the word > > "subsystem" in MVS. But I don't know of any such usage that sets these > > additional requirements for userids. Unless you are using it with some > > trivial meaning like "stuff that runs on MVS that isn't UNIX or TSO > > and somehow, you know, does stuff with userids". > > > > Tony H. > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ________________________________ Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someone other than the recipient. This e-mail may contain proprietary information and is intended only for the use of the intended recipient(s). If the reader of this message is not the intended recipient(s), you are notified that you have received this message in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
