RE: Does anyone run test win vs. linux and can share how muchfaster is linux than windows, please?

Actually, I think Windows probably does dynamically shrink it's physical memory to accomodate the need of it's apps (Oracle in this case). SQL Server does the same thing - it will take as much memory as it can get by default and will automatically shrink if Windows tells it to. Memory management is very dynamic with Windows, but the main problem I've seen with memory on windows is that memory isn't freed cleanly when processes are killed or terminate abnormally.  

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From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Darrell Landrum

I've noticed (haven't precisely measured/tested yet) that given a machine running windows that has 2 GB of memory and an Oracle database (9.2.0.5 in my case) with an SGA of 250 MB and you increase your db_cache_size by 200 MB, you get 150 to 200 MBs of additional pagefile use and real physical memory use only increases slightly, 50 MB or less. Now maybe, just maybe, Windows is dynamically reducing it's physical memory use to accomodate Oracle's need for more, but I seriously doubt that.

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http://www.freelists.org/webpage/oracle-l Received on Wed Aug 10 2005 - 14:21:29 CDT