RE: 64 node Oracle RAC Cluster (The reality of...)
- From: "Kevin Closson" <kevinc@xxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 21 Jun 2005 21:18:10 -0700
>Actually, I was talking about GFS, by Red Hat. For OCFS, I
>read not to use it for ORACLE_HOME, but when I tried with GFS,
>it was extremely slow. I was impressed with the GFS until I
>tried using it for ORACLE_HOME.
that is because GFS (Sistina) is implemented via a central
lock and metadata server (bottleneck,SPOF).
On the other hand, our customers implement
shared executable directories (ORACLE_HOME) on
very large clusters all the time. Implementaion
details are important. Symmetric, distributed is
more difficult to implement but better (that is why most
CFSes like VRTS,GFS,GPFS and others are central
metadata/lock server approaches - time to market).
>Speaking of the operating
>systems, do you know whether RAC is supported on Solaris/x86?
Larry killed Solx86 with his reluctance to port 9i
to it...however, Sol10 is both Open Source
(people have been trying to convince me that
is a good thing for many years) and has Oracle
ports upcoming. I think Sol10 on Opteron is
going to be a really smart move...and unfortunately
one my own company wont be playing in :-( (marketing
reasons).
>I must say that Solaris is much, much, much more mature OS
yes of course.
>then Linux. My company has a bunch of Dell boxes running RH EL
>3.0 and I am not at all satisfied with the performance and
Redhat 3.0 is implemented on a veritable franken-kernel
with bits and pieces of really old 2.4 stuff, over burdoned
with hugemem 4:4 split and other oddities. SuSE
distributions are worth a try.
>reliability. It seems that popularity of an OS grows
>proportionally with its crappiness.
the best technology usually doesn't win. But customers
routinely buying the worst technology amazingly
doesn't help curb that phenomenon much :) Can you
say SPARCcenter 2000 :)
>
>--
>Mladen Gogala
>Oracle DBA
>
>
>--
>//www.freelists.org/webpage/oracle-l
>
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