The APAR is a bit sparce on info useful to customers.
LOCAL FIX:
Fix the cause of the BPX1SPM error.
The most common reason this fails, is because an application
making a resolver call does not have an OMVS segment. ...
I'm not sure why we are not seeing this error. Most of our application
userids do not have an OMVS segment. Does the OMVS segment for a default
UID prevent this, or does it have to be in the application's actual
profile?
I am also a little fuzzy on the circumstances, even though IBM did try
to describe it to me (but it was an IOS person trying to describe a TCP
bug). I gather that it only occurs if an application calls "resolver"
which is a TCP/IP service. Resolver calls USS which fails if the
calling application does not have the OMVS segment. They told me that
the application at the site where they finally diagnosed the problem was
a CA product, but it is not limited to that product. Obviously, your
applications are at risk only if they use Resolver.
Prior to z/OS 1.6, TCP recognize the error but they changed some code in
1.6. Now it tries to pick up an address of something, and if the
failure occured that something may sometimes be a UCB address, leading
to the overlay. I have no idea if other storage could be overlaid by
the bug.
ERROR DESCRIPTION:
The Resolver code EZBRESRV does a BPX1SPM call. If this fails,
the address space is not dubbed. ...
Would we possibly be having this and not know it? This sounds like it
should be pretty obvious - that TCP/IP stuff would fail. But what do
I know of "dubbing"? Could this happen silently and without obvious
fallout?
if you are less that 1.6, you should not have the bug. Even if you do,
as far as we know, only FDR code was affected by this overlay.
In FDR, the overlay usually caused recognizable errors involving volumes
or UCBs which could not be found. But when volumes are being selected
by a volume prefix, it could result in volumes being skipped over with
no obvious errors.
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: [EMAIL PROTECTED]
sales info: [EMAIL PROTECTED]
tech support: [EMAIL PROTECTED]
web: www.innovationdp.fdr.com
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