Cross contamination across various profle pools is a common occurrence at
our shop where the locally developed tools failed to use a distinct
APPLID.  I was one of the offenders until I learned better.

On Fri, Nov 22, 2024 at 18:06 Schmitt, Michael <michael.schm...@dxc.com>
wrote:

> Our system allows multiple logins with profile sharing, but I never do it.
> I don’t trust it. Even if every IBM application works, and even if every
> third-party vendor application works, I don’t trust that our home-grown
> applications would work. I think they’re making assumptions that the TSO id
> = job name = unique name at this time. For example, it is safe to delete
> and reallocate a data set userid.SOME.THING.
>
> I don’t even trust that the applications I wrote and maintain would work.
>
> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf
> of Don Leahy <don.le...@leacom.ca>
> Reply-To: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU>
> Date: Friday, November 22, 2024 at 5:01 PM
> To: "IBM-MAIN@LISTSERV.UA.EDU" <IBM-MAIN@LISTSERV.UA.EDU>
> Subject: Re: Logon to TSO+ISPF on multiple LPAR's at the same time?
>
> Yes, and it’s not that difficult.  You can either use ISPF profile sharing
> or use a separate ISPF profile data set on each LPAR.  I have done it both
> ways.
>
> On Fri, Nov 22, 2024 at 16:09 Paul Gilmartin <
> 0000042bfe9c879d-dmarc-requ...@listserv.ua.edu<mailto:
> 0000042bfe9c879d-dmarc-requ...@listserv.ua.edu>> wrote:
>
> On Fri, 22 Nov 2024 15:18:36 -0500, David Spiegel wrote:
>
> >All? ... No, just the //ISPPROF which can be fixed by including the LPAR
> >name as part of the DSNAME. E.g. <userid>.ISPF.ISPPROF,<lpar-name>
> >
> Ouch!  Profile changes on any LPAR would not be effective on other
> LPARs.  Many (but not all) users would find this unacceptable.  It is no
> better than assigning multiple User IDs.
>
> But <
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fdocs%2Fen%2Fzos%2F3.1.0%3Ftopic%3Dlogons-duplicate&data=05%7C02%7Cmichael.schmitt%40dxc.com%7Cd3d3da1b33424f7e657208dd0b498967%7C93f33571550f43cfb09fcd331338d086%7C0%7C0%7C638679132662443719%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=dL9Bbguv%2FbLtlf%2Fg0rd0LuraoUa4CY5BRqs0DQGg0cU%3D&reserved=0
> ><https://www.ibm.com/docs/en/zos/3.1.0?topic=logons-duplicate> says:
>      ISPF profile sharing or changes to default ISPF data set names
>      might be needed to avoid errors in ISPF with multiple logons.
>      See z/OS ISPF Planning and Customizing for more details about
>      configuring ISPF to support multiple logons.
>
> "profile sharing"
>
> But the referenced document is an abstract containing
> a circular reference.  I'll submit a Feedback.
>
> --
> gil
>
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