RE: Oracle RAC on Win vs. Oracle on Linux

From: Crisler, Jon <>
Date: Mon, 22 Feb 2010 21:43:00 -0500
Message-ID: <56211FD5795F8346A0719FEBC0DB0675016B2ADE_at_mds3aex08.USIEXCHANGE.COM>

Speaking out of some ignorance here on my part, but what about x64 Windows 2003 and beyond ? I thought the 3gb limit was only on 32 bit Windows 2003.

From: on behalf of Goulet, Richard Sent: Mon 2/22/2010 9:02 PM
To:; Robert Freeman; oracle list Subject: RE: Oracle RAC on Win vs. Oracle on Linux


    As I'm working in one of the premier (top 10) trials companies to the pharma community we are moving all our databases/applications off of Windows for Unix based operating systems. These are validated, no problem. Windows has two basic problems, memory and processes. Without a start up switch your limited to 3GB total memory for Oracle, with the switch you can have another gb, but it uses memory context switches which are a performance killer. The second is that Oracle on Windows is multithreaded within a single executable where as Unix based systems have multiple processes again limiting capacity. Our windows based databases are a real pain in the shorts, they are constantly hitting that "blue screen of death" at least once a week. As it is after 1 June we will no longer support or validate a Windows database.  

Dick Goulet
Senior Oracle DBA/NA Team Lead
PAREXEL International  

From: [] On Behalf Of Mohammad Rafiq Sent: Monday, February 22, 2010 8:50 PM
To: Robert Freeman; oracle list
Subject: RE: Oracle RAC on Win vs. Oracle on Linux


I don't agree that Window is evil. I seen problems with Windows NT (mostly memory leak related) but after handling Oracle databases on Windows 2000 or newer version, it is quite stable. However it depends on SA of Windows server how competent they are to configure and handle Windows server.  

I am mostly supporting Oracle databases of various versions on HP, RedHat Linux and Windows and did not find serious issues with Windows 2000+ servers. Although it is not a preferred environment but due vendor requirements for their application (specially for pharmceutical industry which needs validated application/databases) we need to put Oracle databases on Windows 2000/2003 servers.  


Date: Mon, 22 Feb 2010 15:05:10 -0800
Subject: Oracle RAC on Win vs. Oracle on Linux To:

Anyone want to jump in on their preferred platform for RAC? Personally I tend to lean towards Linux for stability purposes, but I'd like your thoughts on why you prefer either platform for RAC. Specifically why would you avoid windows (other than the fact that it's evil), or would you?


Robert G. Freeman
Master Principle Consultant, Oracle Corporation Oracle ACE
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Received on Mon Feb 22 2010 - 20:43:00 CST

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