Well, foreground TSO is time sharing, and it is still orional in the sense that 
you have to define TSO segments or (obsolete) UADS entries.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf of 
Jesse 1 Robinson <jesse1.robin...@sce.com>
Sent: Wednesday, November 7, 2018 5:50 PM
To: IBM-MAIN@listserv.ua.edu
Subject: Re: Ask the experts about running things

Let's not pass up the opportunity to observe that TSO is not 'time sharing', 
nor is it 'optional', yet it's constantly on the lips of every mainframer. I 
caution newbies (and managers and auditors) not to give much weight to these 
acronyms. Saying 'multiple virtual storage' more than once in a meeting marks 
you as a doofus. ;-)

.
.
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
robin...@sce.com


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Seymour J Metz
Sent: Wednesday, November 07, 2018 1:41 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: (External):Re: Ask the experts about running things

Roughly, and in an MVS context:

Address space: a context for resolving virtual addresses. There is an address 
space for each batch job, started task, TSO session and similar units of work.

Data space: a specialized address space from which instructions are not 
executed.

Subsystem: a body of code identified to MVS as a subsystem and providing 
service through the subsystem interface.

Stated task: a job initiated by the START operator command rather than through 
the Initiator. In many cases the START is issued automatically shortly after 
IPL. Started tasks have identifiers starting with S or STC.

Job; a unit or work. Batch jobs have identifiers starting with J or JOB.

TSO: Time Sharing Option. Support for interactive units of work. Note that you 
can do Unix System Services work interactively without a TSO session. TSO 
sessions have identifiers starting with T or TSU.

Process: a unit of scheduling for Unix. Depending on how the system is 
configured, multiple Unix processes may run in a single address space. There 
may b multiple threads within a process - in fact, the original name for 
threads as light-weight process.

Enclave is a bit difficult describe; take a look at the Language Environment 
documentation for a start.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf of 
Peter Ten Eyck <peter.tene...@americannational.com>
Sent: Tuesday, November 6, 2018 1:59 PM
To: IBM-MAIN@listserv.ua.edu
Subject: Ask the experts about running things

For an inquisitive programmer... what is a good definition for each of the 
following? How do they relate to each other?

Address space
Data space
Subsystem
Started task
Job
TSU (TSO)
Process
Enclave

Note: My explanation will fall short of what IBM-Main can come up with.


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