OS memory Usage

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latif
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Location: United Arab Emirates
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OS memory Usage

Post by latif »

Hi all,

My system has 8GB of Ram in which contain oracle database tier and concurrent node of oracle 11i E Bussiness Suite.When I check for memory usage it shows only 25 to 35MB free and remaing is in use.I am worry why there is so much memory usage.Kindly help me.

Mohammed Latif
amirtai
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Joined: Sat Apr 08, 2006 5:54 pm
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Post by amirtai »

Hi

You forgot to mention about which OS/Rel/SP you are talking about? Please be specific, all platform even releases may have different methods to project actual memory usage.

Thanks
Amir
latif
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Location: United Arab Emirates
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Post by latif »

Hi Amir,

I am using Redhat Enterprise Linux AS release 4.Kindly guide me how i'll tune the OS.

bye
amirtai
Posts: 138
Joined: Sat Apr 08, 2006 5:54 pm
Location: Canada
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Post by amirtai »

Hi

Linux DB Server won't show you actual memory, because it reserves large portion of the memory in cache. You can issue "show sga" from sqlprompt to see actual memory utilized by database. However with "free" and "top" command you can check how much memory is free and which process is using what %age of the memory.

However for OS tuning I would prefer to use "sar" (system activity report).

Thanks
Amir
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