Re: db file sequential reads

Performance problems with db file sequential read can happen for two reasons: 1) you are doing too many I/O
2) each I/O is too slow (now there can many reaons why I/O is slow).

So your solution of going with the INDEX_FFS hint is too reduce the number of I/O. Well what if the problem is that the I/O is too slow ?

Anjo Kolk

http://www.oraperf.com

Robertson Lee - lerobe wrote:

> All,
>
> Oracle 8.0.5.0.0 Tru64 4.0f
>
> We are having a performance issue with one of our applications and it looks
> like it is pointing to the db file sequential reads event. I have been doing
> some digging around and a recommendation in a book I have has suggested a
> possible way to alleviate this is to use the INDEX_FFS hint in the query.
> Anyone used this before ??. or indeed any other recommendations where I
> should be looking.
>
> Regards
>
> Lee
>
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-- 
Author: Anjo Kolk
  INET: anjo_at_oraperf.com

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