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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Tablespace Allocation Type & Extent Management
How does one convert a tablespace from dictionary to local? I've wanted to do the reverse but I never saw anything in the docs that said this was an option.
Are you saying then, that this is probably what happened in my case and now the tablespace is performing extent management based on 8k extents? I'm confused.
Thanks again.
-w
--- Connor McDonald <hamcdc_at_yahoo.co.uk> wrote:
> When you convert from dictionary to local, then you
> will see the USER allocation type - because all of
> the
> segments that already exist in the tablespace.
>
> You also need to be careful when converting that you
> have a reasonable size for common denominator of all
> extents. If you had (for example) some 128k and
> some
> 136k extents, then the local tspace conversion would
> need it bitmaps based on 8k - not probably what you
> had in mind.
>
> Cheers
> Connor
>
> --- Walter K <alden14004_at_yahoo.com> wrote: > I seem
> to
> be confused about the relationship between
> > tablespace management and allocation methods.
> >
> > What is the USER allocation_type (as reported by
> > DBA_TABLESPACES)? I thought this corresponded only
> > to
> > dictionary-managed tablespaces--I see it
> associated
> > with locally-managed tablespaces as well.
> >
> > Also, I thought that PCTINCREASE was only
> applicable
> > to dictionary-managed tablespaces. Again, I am
> > seeing
> > a PCT_INCREASE=50 for some locally-managed
> > tablespaces
> > in one of my databases. How is this possible?
> >
> > Based on everything I have read (docs & metalink)
> > about LMTs vs. Dictionary, I am perplexed by the
> > results of the following query I ran:
> >
> > 1 select extent_management, allocation_type,
> > pct_increase, count(*)
> > 2 from dba_tablespaces
> > 3 group by extent_management, allocation_type,
> > pct_increase;
> >
> > EXTENT_MAN ALLOCATIO PCT_INCREASE COUNT(*)
> > ---------- --------- ------------ ----------
> > DICTIONARY USER 0 4
> > DICTIONARY USER 50 3
> > LOCAL SYSTEM 1
> > LOCAL UNIFORM 0 1
> > LOCAL USER 50 283 <---
> > ????
> >
> > As always, your feedback is ALWAYS appreciated.
> > -w
> >
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> > --
> > Author: Walter K
> > INET: alden14004_at_yahoo.com
> >
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Walter K INET: alden14004_at_yahoo.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 Fri Jun 01 2001 - 07:51:12 CDT
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