Re: os block size versus oracle bock size

Hi Jack and List,

we have the same situation. Our DB (mainly OLTP) was built with db_block_size 8k and ext2 filesystem (Linux) has 4k block size. AFAIK 4k is max block size for ext2. Do you think it's worth to rebuild the DB with 4k block in order to adjust it to ext2's block size? I know it's quite a difficult question, so I will appreciate your general advices or thoughts. And does anyone know if direct or async options are available on ext2 ? I have little experience of working on Linux.

Thanks,
Ed

>
> Hi
>
>
> I'd say yes. For every Oracle block read the OS has to read two block
which
> causes overhead.
>
>
> Jack
>
>
>
>
> GKor_at_rdw.nl_at_fatcity.com on 23-10-2001 16:05:21
>
> Please respond to ORACLE-L_at_fatcity.com
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> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> cc: (bcc: Jack van Zanen/nlzanen1/External/MEY/NL)
>
> hi all
>
> we have an oracle block size of 8k and i believe our W2K server has a
> default
> os block size of 4k.
> Is this a problem with the performance ?
>
> thanks
>
>
> g.g. kor
> rdw ict groningen
>
>
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Author: Edward Shevtsov
  INET: ed_at_mb.ru

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