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Home -> Community -> Mailing Lists -> Oracle-L -> Re: RE[2]: Re-claiming the space from Table after deletion
Rafi
Never cross PCTUSED + PCTFREE = 100%(Imporatant Rule), Ideally it should be below 75%. PCTUSED helps How your data is inseted?? If Insert oriented database, If your database is insert and Update oriendted You have to strike a balance between both of these parameters!!
Raghu.
>From: rafi_at_vsnl.net
>Reply-To: ORACLE-L_at_fatcity.com
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Subject: RE[2]: Re-claiming the space from Table after deletion
>Date: Mon, 12 Mar 2001 02:30:20 -0800
>
>Do you mean that PCTUSED-100 & PCTFREE-5 will help utilise the
>next extents more efficiently.
>
>Will PCTUSED affect only future blocks or existing ones too.
>
>Also, will increasing PCTUSED affect system speed?
>
>Kind regards,
>Rafi
>
>ahillman_at_erols.com wrote
>You are right. In this case my last point of increasing PCTUSED applies to
>hole table
>
>Alex Hillman
>
> > -----Original Message-----
> > From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of Raghu Kota
> > Sent: Friday, March 09, 2001 1:18 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: RE: Re-claiming the space from Table after deleteion
> >
> >
> > Mr Alex
> >
> > You overlooked imp point that is oracle 7.3
> >
> >
> > >From: "Alex Hillman" <ahillman_at_erols.com>
> > >Reply-To: ORACLE-L_at_fatcity.com
> > >To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> > >Subject: RE: Re-claiming the space from Table after deleteion
> > >Date: Fri, 09 Mar 2001 08:45:57 -0800
> > >
> > >First of all, as Joe Testa said - if you partitioned this table by date
>-
> > >let say one partition per month - you can truncate partitions that you
> > >don't
> > >need anymore. Second - if this option is not available - let say that
>you
> > >need delete most but not all records from specific partition - you can
> > >create temporary table, select into this table all records that
> > should not
> > >be deleted, truncate partition and then select into partition all
>records
> > >from temporary table. And last case - if you need to delete let
> > say 30-50%
> > >of the recors and this table does not have a lot of deletes in everyday
> > >activity and most deletes are batch in the end of month or some other
> > >period - you can increase value of PCTUSED to 100-PCTFREE-5.
> > >
> > >Alex Hillman
> > >
> > > > -----Original Message-----
> > > > From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of
> > > > rafi_at_vsnl.net
> > > > Sent: Friday, March 09, 2001 4:56 AM
> > > > To: Multiple recipients of list ORACLE-L
> > > > Subject: Re-claiming the space from Table after deleteion
> > > >
> > > >
> > > > Dear All,
> > > >
> > > > Platform: Solaris 2.6, Oracle: 7.3.4.0
> > > >
> > > > We have a few tables which are growing very fast due to large no of
> > > > insertions. But the data gets obselete after a month and we use a
> > > > procedure to delete the obselete data from the tables.
> > > >
> > > > The problem is that the table does not free the space even
> > > > after the deletion of 40% of the data.
> > > >
> > > > How can we re-claim the unused space which got created due to
> > deletion?
> > > >
> > > > How do we ensure that future inserts are done in this unused space?
> > > >
> > > >
> > > > [We can not try exp/imp or truncate option
> > > > due to the huge size & high activity and
> > > > online use of the tables].
> > > >
> > > > Kind Regards and thanks to all there,
> > > >
> > > >
> > > > Rafi Ahmad
> > > >
> > > >
> > > >
> > > > --
> > > > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > > > --
> > > > Author:
> > > > INET: rafi_at_vsnl.net
> > > >
> > > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > > > San Diego, California -- Public Internet access / Mailing
>Lists
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> > > >
> > >
> > >--
> > >Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > >--
> > >Author: Alex Hillman
> > > INET: ahillman_at_erols.com
> > >
> > >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Raghu Kota
> > INET: raghukota_at_hotmail.com
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> > San Diego, California -- Public Internet access / Mailing Lists
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>
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author: Alex Hillman
> INET: ahillman_at_erols.com
>
>Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
>San Diego, California -- Public Internet access / Mailing Lists
>--------------------------------------------------------------------
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>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author:
> INET: rafi_at_vsnl.net
>
>Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
>San Diego, California -- Public Internet access / Mailing Lists
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Raghu Kota INET: raghukota_at_hotmail.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Mon Mar 12 2001 - 08:15:10 CST
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