RE: Size of segment

The improvement is more about putting them in different tablespaces that reside on different physical disks, therefore sharing the I/O between the disks, and having the disk heads searching concurrently, rather than thrashing back and forth..

Mark

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-----Original Message-----
Mengler
Sent: 29 April 2002 15:54
To: Multiple recipients of list ORACLE-L

Ray Stell wrote:
>
> On Mon, Apr 29, 2002 at 05:13:22AM -0800, Ganesh Raja wrote:
> > My Suggestion would be to give Uniform sized Extents and move the table
and
> > Index into that tablespace.
> --
>
> You are taking a preformance hit having the indexes and tables
> in the same tablespace, are you not?

There is/was a recent and active discussion of this topic in the Oracle Server Usenet forum.

While it has long been "recommended" that tables & indexes be placed in separate tablespaces, the current conventional wisdom disputes the claim that performance can/will be enhanced by separating data and indexes into different tablespaces.

If anybody can produce recent benchmark results which shows that separating index & data into different tablespaces improves performance, I'd like to see the details behind the benchmark and the results.

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