I used TSO under OS/360's MVT release 20 in the early or mid 70's. I remember a 7 character TSO userid length limit with the 'submit' command able to add an eighth character to allow for multiple job submissions.
/s/ Anthony L. Zak -----Original Message----- >From: David Spiegel <[email protected]> >Sent: Apr 30, 2020 5:02 PM >To: [email protected] >Subject: Re: [IBM-MAIN] Mainframe user ID length > >TSO used to have a limit of 7. > >On 2020-04-30 16:43, Mike Schwab wrote: >> USERID length can be 8. >> >> TSO USED to have a limit of 8, with the SYS1.UADS emergency logon >> adding a digit to access multiple records, and job submission adding a >> character for the jobname. >> >> The 8th character was/is the length in Binary, x'01'-x'07'. Now you >> can specify an 8 byte TSO USERID, with the 8th character being > >> x'07'. >> >> https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fsupport%2Fknowledgecenter%2FSSLTBW_2.3.0%2Fcom.ibm.zos.v2r3.e0za100%2Fch1tso_23_8char.htm&data=02%7C01%7C%7C57136fbee2814281b18408d7ed47603c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637238763120777692&sdata=VumiQcDjPdQQ9B1ZFQXiQHRSwCBEs%2FSKsKS9G62LpIM%3D&reserved=0. >> >> On Thu, Apr 30, 2020 at 8:21 PM Frank Swarbrick >> <[email protected]> wrote: >>> I'm asking about the user ID, not the password/pass phrase. But thanks. >>> >>> ________________________________ >>> From: IBM Mainframe Discussion List <[email protected]> on behalf of >>> Jesse 1 Robinson <[email protected]> >>> Sent: Thursday, April 30, 2020 2:03 PM >>> To: [email protected] <[email protected]> >>> Subject: Re: Mainframe user ID length >>> >>> RACF can now handle 'password phrase' of considerable length and/or >>> upper/lower case passwords. If you allow lower case, you can end up with a >>> mess. With traditional upper-only system option, a password typed e.g. via >>> TSO gets automatically translated to upper case with no user notification. >>> With the system option set to lower case allowed, that translation does not >>> occur. This means that every password entry *must* also be lower case. Some >>> logon environments may not allow lower case. Worse, if there is a severe >>> problem that requires fallback to upper only, a user with a lower case >>> password may not be able to logon at all. >>> >>> This is an all or nothing option. Allowing or disallowing lower case >>> affects all environments at the same time. >>> >>> . >>> . >>> J.O.Skip Robinson >>> Southern California Edison Company >>> Electric Dragon Team Paddler >>> SHARE MVS Program Co-Manager >>> 323-715-0595 Mobile >>> 626-543-6132 Office ⇐=== NEW >>> [email protected] >>> >>> -----Original Message----- >>> From: IBM Mainframe Discussion List <[email protected]> On Behalf Of >>> Frank Swarbrick >>> Sent: Thursday, April 30, 2020 12:46 PM >>> To: [email protected] >>> Subject: (External):Mainframe user ID length >>> >>> CAUTION EXTERNAL EMAIL >>> >>> Is z/OS still limited in all cases to 8 upper case characters? I am >>> curious if a user that only has access to MQ might be able to have a longer >>> and ideally mixed case user ID. They wouldn't have access to TSO or CICS >>> or IMS. >>> >>> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
