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Re: Locally managed tablespaces and migrated rows

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Wed, 9 May 2001 18:30:10 +0100
Message-ID: <989429287.15301.1.nnrp-09.9e984b29@news.demon.co.uk>

Actually that doesn't help. SMON executes:  select
 f.file#, f.block#, f.ts#, f.length
 from fet$ f, ts$ t
 where t.ts#=f.ts#
 and t.dflextpct!=0

so it has to hit one block per tablespace (because that's the way the cluster is
defined) to determine whether the default pctincrease is zero.

--
Jonathan Lewis
Yet another Oracle-related web site:  http://www.jlcomp.demon.co.uk

Practical Oracle 8i:  Building Efficient Databases
Publishers:  Addison-Wesley

Reviews at: http://www.jlcomp.demon.co.uk/book_rev.html



Anjo Kolk wrote in message <3AF978E7.6B026837_at_chello.nl>...

>
>Or pctincrease =0 on the tablespace ;-)
>
>Jonathan Lewis wrote:
>
>> I hope that was a rhetorical statement - I happen
>> to think that LMTs are a 'good thing'. I just want
>> to see Oracle take the next crucial step of making
>> an official change to the clu$ cluster or to smon
>> so that we don't get hit with smon kicking the
>> dictionary to death every five minutes looking for
>> space to coalesce. Have you seen what happens
>> to I/O on the SYSTEM tablespace when your
>> database has 25,000 tablespaces !!!
>>
>> (Unless you set events 10061 and 10269, or
>> hack sql.bsq of course).
>>
>> --
>> Jonathan Lewis
>> Yet another Oracle-related web site: http://www.jlcomp.demon.co.uk
>>
>> Practical Oracle 8i: Building Efficient Databases
>> Publishers: Addison-Wesley
>>
>> Reviews at: http://www.jlcomp.demon.co.uk/book_rev.html
>>
>> Nuno Souto wrote in message <3af91311.4028559_at_news-server>...
>> >
>> >How true. And we have to live with them, they aren't gonna go away
>> >just because we think they're rubbish.
>> >
>
>
>
Received on Wed May 09 2001 - 12:30:10 CDT

Original text of this message

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