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#1 (**permalink**) 01-12-2008, 06:35 AM

Hello,

We are getting intermittent memory errors on a number of our systems.
In the text of the error message, it mentions a UDBH Syndrome Memory
Module Board and a UDBL Syndrome Memory Module Board. I basically
understand what I should be watching for with memory errors (multiple
errors same day, same DIMM). My question is simply what do UDBH and
UDBL stand for? My searches through sunsolve have turned up empty.

Rod

#2 (**permalink**) 01-12-2008, 06:35 AM

Rod Sanborn wrote:
> My question is simply what do UDBH and
> UDBL stand for? My searches through sunsolve have turned up empty.

UltraSPARC Data Buffer High and Low.

--
Tony

#3 (**permalink**) 01-12-2008, 06:36 AM

Tony Walton <tony.walton@s_u_n.com> wrote in message news:<408FDB65.9030502@s_u_n.com>...
> Rod Sanborn wrote:
> > My question is simply what do UDBH and
> > UDBL stand for? My searches through sunsolve have turned up empty.
>
>
> UltraSPARC Data Buffer High and Low.

Thank you for the information. Seeing the answer to my question makes
me realize that my question really should have been what is a "UDBH/L
Syndrome" in reference to a memory module.

Also, I have seen several postings that state that more than 3-4
errors per day on the same DIMM indicates a problem that needs to be
addressed (reseating, replacement, etc). Does anybody know if this is
in writing somewhere (preferably in a Sun doc)? In the past, our
internal hardware folks have been reluctant to fix problems because
the errors have all been correctable and nobody has complained about
any application errors that could be attributed to the memory problem.

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UDBH and UDBL Memory errors