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Home -> Community -> Mailing Lists -> Oracle-L -> Re: extents allocation in parallel load
Tim,
SQL> select TABLESPACE_NAME, INITIAL_EXTENT/1024,
NEXT_EXTENT/1024, PCT_INCREASE
2 from dba_tablespaces
3 where tablespace_name like 'TEMP%'
4 or tablespace_name = 'TREPD01';
TABLESPACE_NAME INITIAL_EXTENT/1024NEXT_EXTENT/1024 PCT_INCREASE
------------------------------ -------------------
---------------- ------------
TREPD01 40
40 0
TEMP01 1024
1024 0
TREPD01 is where the tables are located, TTEMP01 is the temp tablespace.
Gene
--- Tim Gorman <Tim_at_sagelogix.com> wrote:
> What does "SELECT * FROM DBA_TABLESPACES" show for
> the tablespace involved?
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L"
> <ORACLE-L_at_fatcity.com>
> Sent: Tuesday, May 14, 2002 12:53 PM
>
>
> > Tim,
> >
> > Thanks for the explanation. The table I'm looking
> at
> > has an initial size 32K while the new extents are
> all
> > 16K. Why would this happen?
> >
> > thanks
> >
> > Gene
> > --- Tim Gorman <Tim_at_sagelogix.com> wrote:
> > > SQL*Loader in direct-parallel mode (i.e.
> > > DIRECT=TRUE, PARALLEL=TRUE) first
> > > loads into a TEMPORARY segment. After the load
> > > completes, then the
> > > TEMPORARY segment is "merged" with the table
> > > segment. All of the "direct"
> > > (a.k.a. "append") operations work this way when
> > > executed in parallel (i.e.
> > > INSERT /*+ APPEND PARALLEL */, CREATE INDEX ...
> > > PARALLEL, CREATE TABLE ...
> > > PARALLEL ... AS SELECT, etc)...
> > >
> > > Only SQL*Loader's direct-nonparallel mode (i.e.
> > > DIRECT=TRUE, PARALLEL=FALSE)
> > > loads into space on the table segment above the
> > > current "high-water mark".
> > > That expected scenario is probably the reason
> why
> > > you expect all new extents
> > > to be sized according to NEXT...
> > >
> > > So, the newly added extents were probably
> "INITIAL"
> > > extents for the original
> > > TEMPORARY segments, before they were merged into
> the
> > > table segment, perhaps?
> > >
> > > ----- Original Message -----
> > > To: "Multiple recipients of list ORACLE-L"
> > > <ORACLE-L_at_fatcity.com>
> > > Sent: Tuesday, May 14, 2002 10:33 AM
> > >
> > >
> > > > Hi,
> > > >
> > > > I'm confused by the way some of my extents are
> > > > allocated in Oracle. I've talked to Oracle
> reps, I
> > > > thing I've posted here before and jsut when I
> > > thought
> > > > I got an understanring - ooops, everything is
> > > gone. So
> > > > I'll give it another try. I have a table with
> > > initial
> > > > set to 32K and next set to 1M. This table is
> being
> > > > loaded on a daily basis via Ab initio. The
> load is
> > > > done by SQL*loader in direct mode in parallel
> (I
> > > > believe it is 8 ways). Now all the segments
> that
> > > have
> > > > been created for this table (besides the 1st
> one)
> > > are
> > > > 16K. Where does this size come from? I thought
> it
> > > > should use the NEXT parameter for the new
> extents,
> > > but
> > > > it doesn't. Can someone give me some pointers?
> > > >
> > > > thanks
> > > >
> > > > Gene
> > > >
> > > >
> __________________________________________________
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> > > > --
> > > > Please see the official ORACLE-L FAQ:
> > > http://www.orafaq.com
> > > > --
> > > > Author: Gurelei
> > > > INET: gurelei_at_yahoo.com
> > > >
> > > > Fat City Network Services -- (858) 538-5051
>
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> > > >
> > >
> >
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Gurelei INET: gurelei_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 Tue May 14 2002 - 16:18:26 CDT
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