--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of
Lindy Mayfield <[email protected]>
Sent: Thursday, September 26, 2019 10:53 AM
To: [email protected]
Subject: Re: Control block values that exempt 522 Timeouts
It could have been hardware related based on clock speed on early machines.
Perhaps it's more appropriate ask this on the RACF group.
/Lindy
-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
Mike Schwab
Sent: tiistai 17. syyskuuta 2019 18.35
To: [email protected]
Subject: Re: Control block values that exempt 522 Timeouts
EXTERNAL
Well, if that represents 24 hours then 2555 is 1 second.
On Tue, Sep 17, 2019 at 8:09 AM Lindy Mayfield <[email protected]> wrote:
>
> Hi,
>
> I understand that address spaces can be made exempt from 522 timeouts if
> there is a particular value in one of three control blocks. If I have it
> correct they are:
>
> 1) The JSTL is 86400 seconds (Comes from TIME=1440 on Job card?)
> 2) The ASCBTOFF bit in the ASCBRCTF is set
> 3) The SWTL contains the magic number x'0D286880'
>
> What can I learn from one or more of those values being set? For example,
> which z/OS or application components update those control blocks or cause
> them to be updated?
>
> Thanks in advance for any insight!
>
> Kind regards,
> Lindy
>
> P.S. I think I asked some years ago where they magic number x'0D286880'
> comes from. I forgot. I think it was historical, and maybe counted in
> timerons or something similar.
>
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1440 has nothing to do with clock speed. 1440 = 60 * 24.
--
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?
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