Re: issues with oracle partitioning and SAN striping

On 11/6/06, ryan_gaffuri_at_comcast.net <ryan_gaffuri_at_comcast.net> wrote:
>
> Someone on our team raised concerns about using both oracle table level
> partitioning and SAN striping. As I have said before I am more on the
> developer side of things. Has anyone had problems with this?
>
> "SAN striping of data file and Oracle partitions) techniques we are using
> will sure collide with each other creating worse performance than using
> either one of the two. Since SAN is not aware of how oracle is handling the
> partitions, data from two hash or range partitions can end up on the same
> spindle thereby making it serial I/O."
>

If you are considering a system where only one session is connected to the database and causing IO, this makes some kind of sense, though not a lot I think.

With multiple sesssions connected to the database causing IO, I'm not sure what they mean by 'collisions'.

Partitioning is a method to manage large amounts of data efficiently, and improve performance where FTS and Fast Full Scan of indexes would take place. This tends to reduce IO, no?

-- 
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist

--
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