The MVS monitors I know about that support storage viewing and
alteration allow for this. Some like TMONMVS automatically fix an LPA
pages which is being modified. SYSVIEW is aware of the status and will
prompt you to page fix it yourself " DUMP025W ALTER not valid, address
0933B002 is page protected but not fixed" using the pgfix command.
Best Regards,
Sam Knutson, GEICO
Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of McKown, John
Sent: Wednesday, July 25, 2007 1:55 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Is a page protected?--how to determine
>From what I remember from the deep-dark-past, LPA is never paged-out. So
if something modifies an LPA page, then it must also do a PGFIX so that
the frame in which it resides is never used for anything else. I
remember a type 3 SVC which did an "initialization" of itself upon the
first execution. The updated data area within the SVC code had to be
page fixed and the comment was "or else the data is lost if the frame is
ever reused due to low activity."
--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology
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