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Re: Fragmented System Tablespace

From: Thomas Kyte <tkyte_at_us.oracle.com>
Date: Sun, 20 Sep 1998 14:25:08 GMT
Message-ID: <36080fb3.4147353@192.86.155.100>


A copy of this was sent to "Michael Krall" <mike_krall_at_email.msn.com> (if that email address didn't require changing) On Sun, 20 Sep 1998 03:00:45 -0400, you wrote:

>I have a question about the system tablespace. I have 5 or 6 tables with
>more then 15 extents. Can I export / import the tables within the system

no. it won't matter anyway -- having 1, 100, 1000 extents does not affect performance, especially with indexed reads (it may affect performance of a full scan if your extents are not multiples of your multi block read count).

don't do it.

>tablespace without damaging the instance ? If I can would a new analyze of
>my production data & indexes be in order ?
>

no -- even if you could do this, reorging a table in the system tablespace would have no affect on the statistics collected on a table in another tablespace (or even another table in the same tablespace).

>Any help would be greatly appreciated.
>
>Thanks
>Michael Krall
>Senior Systems Engineer
>Safety 1st
>mkrall_at_safety1st.com
>
 

Thomas Kyte
tkyte_at_us.oracle.com
Oracle Government
Herndon VA

--
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