Ok, mayyybe. Though I'd point out that the existence of USS may have made 
(probably did make) those other things easier to implement, but that doesn't 
mean they were impossible without it.

And your response doesn't really address my question, I don't think?

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Ed 
Jaffe
Sent: Wednesday, March 26, 2025 11:10 AM
To: [email protected]
Subject: Re: Java saved IBM Z?!

On 3/26/2025 7:38 AM, Phil Smith III wrote:
> https://www.quora.com/What-are-some-notable-failed-programming-tools-t
> hat-promised-to-revolutionize-software-development
>
> Trausti Thor Johannsson's response (which is currently at the top there, but 
> might not be later) includes "[Java] not only made Mainframe computers not 
> die but made them very useful."
>
> I don't think I've ever seen anyone claim that Java saved IBM Z, nor that 
> it's a major use case. Yeah, it's there, but even with zIIPs and zAAPs it's 
> not all THAT common, is it? Or have I just been working with the wrong sort 
> of customers?

I have said *many* times that z/OS UNIX nee OS/390 USS nee MVS Open Edition 
saved the mainframe. Of course, by "mainframe" I meant traditional z/OS 
mainframe environments.

Years ago, I met Bill Schoen at an IBM TDM reception in Poughkeepsie and shook 
his hand so vigorously that he probably remembers it to this day. 
I told him that I credited him, more than any other individual in the world, 
with saving the mainframe. If Don Ault had been there, I would have 
congratulated him too. That team (I think they were in Kingston at the time) 
implemented a fundamentally-crucial difference in capability that has been 
leveraged over the years by TCP/IP, Java, z/OSMF, and many other critical 
components. And now Kershaw Mehta and his team, standing on the shoulders of 
giants, continue that great work by fundamentally improving z/OS UNIX to 
support native containers.

--
Phoenix Software International
Edward E. Jaffe
Chief Technology Officer
831 Parkview Drive North
El Segundo, CA 90245
https://www.phoenixsoftware.com/


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