I think that the TCAST is located in Fetch protected storage. You would
need authorized code to even read it. I believe that is why Netview rexx gets a
null values.
Is there a problem with issuing commands???
In my opinion, it would be easier to Pipe a 'D TS' command to MVS and
parse the reply for the usermax value!!!
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Steve Horein
Sent: Monday, July 08, 2019 5:39 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Determine TSO USERMAX?
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Thanks Tony!
My intent is to merely interrogate to ensure someone hadn't left an
undesired value after a change window.
Traveling down the path of CVT > TCAST > TCASUMAX using Rexx storage calls
(via NetView) yields a null value.
The old doc mentioned TCAST was located in "System common area", but
perhaps it moved to private?
Anyway, I appreciate the help!
On Mon, Jul 8, 2019 at 3:56 PM Cieri, Anthony <aci...@seic.com> wrote:
>
> Are you looking to set the usermax to an appropriate value via
> automation, or simply trying to determine the current value??
>
> In the CVT there is a pointer to the TCAST, CVTTCASP is at offset
> 1012 (x'3F4') in the CVT.
>
> I believe that TCASUMAX is a 2 byte field at offset 6 in the
> TCAST. I think that you will need to be authorized to display it!!!
>
> Hth
> Tony
>
>
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Steve Horein
> Sent: Monday, July 08, 2019 3:52 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Determine TSO USERMAX?
>
> [[ SEI WARNING *** This email was sent from an external source. Do not
> open attachments or click on links from unknown or suspicious senders. ***
> ]]
>
>
> Hi!
> In an effort to improve automation, I am looking for a method to determine
> TSO USERMAX other than issuing console commands. Blowing the dust off old
> documentation, "z/OS V1R10.0 Comm Svr: SNA Data Areas Volume 1", I found
> "TCASUMAX" in "Terminal Control Address Space Table" (TCAST). Neat. This
> would seem to fill the need. However, it appears SNA Data Areas are no
> longer being published for modern z operating systems to verify this
> information is still available. Does anyone know of a way to get this
> information?
>
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