-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Peter Relson
Sent: Thursday, March 06, 2008 6:45 AM
To: [email protected]
Subject: Re: Is PSATOLD always zero when in SRB mode?

The answer is "yes".

But you might want to ask the converse question:
"If PSATOLD is zero, are you in SRB mode?"
The answer is "not always".

There is a small case in z/OS that we call "pseudo-SRB mode" where a
task was running (had PSATOLD non-zero) and the system zeroes PSATOLD
and continues for a while. This can happen in memory termination
situations, for example.
<SNIP>

Could you point us to where this is documented (the ways this can
happen)? It seems that we have gotten dumps now and then from customers
where PSATOLD = 0 and it really should not have been (from our
perspective). We were in one of our ESTAE routine or one of our
"DISPLAY" routines. We do not use SRB mode ever (barring the system
doing it on our behalf).

Regards,
Steve Thompson

-- All opinions expressed by me are my own and may not necessarily
reflect those of my employer. --

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