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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Received on Fri Jun 01 2001 - 02:26:00 CDT
