RE:

That mandates proper initrans and pctfree setting, don't you think?

> -----Original Message-----
> From: Arup Nanda [mailto:orarup_at_hotmail.com]
> Sent: Monday, February 10, 2003 11:24 PM
> To: Multiple recipients of list ORACLE-L
> Subject:
>
>
> Raj,
>
> Another consideration is a potential for a buffer busy waits.
> the larger the
> block size is, the more the number of rows in an average block. Thsi
> increases the possibility of a buffer busy wait.
>
> HTH.
>
> Arup
>
>
> An 8.0.6 ops database being migrated to 9i RAC database on
> Solaris 8. The
> 8.0 database had an block size of 2k. Multiblock read count
> is 8. This is
> an OLTP database, all transactions almost always work on a
> single row. None
> of the row sizes exceed the block size. Hardly any chained or migrated
> rows. Now, during this migration, it was recommended to
> change the block
> size to 8k. And my concerns are:
>
> 1. Would this not increase pinging across the instances? With 9i and
> interconnect and cache fusion, this should be reduced
> considerably, so, is
> it a mute point?
> 2. This could alter the execution plans of some statements.
> Would some,
> maybe a very few of the statements not prefer a full table scan?
>
> Any other positive or negative effects of this increase in block size?
>
> Thanks
> One Paranoid DBA
>
>
>
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> Author:
> INET: Rajesh.Rao_at_jpmchase.com
>
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> Author: Arup Nanda
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