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Re: How big should the SGA be

From: Puneet Khanna <khannapk_at_hotmail.com>
Date: Thu, 5 Aug 1999 09:30:01 -0400
Message-ID: <7oc3lg$90i$1@nntp3.uunet.ca>


Ideally speaking your SGA size should be 1/3rd of the RAM size. So, if your RAM is 1GB, SGA should be aroung 350MB. It also depends on what would your querry rate. Hoow many users would be doing the entry. etc..
Which version of database are you using?

Steve Thomas <skthomas_at_thrifty.net> wrote in message news:rqh88ps7se11_at_corp.supernews.com...
> I have a Sun 450 with 2 processors, 1 GB memory, 10 4GB and 10 9GB hard
> drives with no RAID.
>
> How big should the SGA be if I need to support large a small transactions?
> Large might be 1 to 5 million rows.
> What block size should I use?
> How big should the Database Buffer, Redo Log Buffer, Dictionary Cache, and
> Shared SQL Pool be?
> How many DBWR_IO_SLAVES, LGWR_IO_SLAVES, and ARCH_IO_SLAVES should I have?
>
> I as thinking about the following:
>
> With 8K block sizes, could I have let say 50,000 blocks of database buffer
> and 20 DBWR_IO_SLAVE processes.
>
> Does this make sense?
>
> Steve
>
>
>
>
>
Received on Thu Aug 05 1999 - 08:30:01 CDT

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