Thanks, Denny. That's it. I imagine Tom's test database is running in
noarchivelog mode and the tablespace is logging.
Yong Huang
- Denny Koovakattu <groups_at_koovakattu.com> wrote:
> Yong,
>
> If the database is in ARCHIVELOG mode, then the table must be set to
> NOLOGGING
> for append hint to work. If the database is in NOARCHIVELOG mode, then the
> table
> setting does not matter.
>
> Tom has not specified whether the database he tested against was in
> NOARCHIVELOG mode or whether the tablespace was set to NOLOGGING. If the
> tablespace was set to NOLOGGING the table would have also got created as
> NOLOGGING and would have worked even if the database was in ARCHIVELOG mode.
>
> Regards,
> Denny
> --
> Denny Koovakattu
>
>
> Quoting Yong Huang <yong321_at_yahoo.com>:
>
> > Hi, Igor,
> >
> > Direct-path insert does not work for IOTs. This is documented in SQL
> > Reference
> > for INSERT.
> >
> > Whether it works for a table without NOLOGGING set (i.e. LOGGING) is not
> > clear
> > to me. Documentation says the table has to be NOLOGGING, or its tablespace
> > has
> > to be so. But Tom Kyte seems to show us that as long as you say INSERT /*+
> > APPEND */ SELECT, there won't be redo (except for the minimum data
> > dictionary
> > change), regardless of the table logging setting. See his demo at
> > http://groups.google.com/groups?selm=a3k2kp08q5%40drn.newsguy.com (that
> > message
> > was not intended to prove my observation). If somebody reads that
> > differently,
> > please correct me.
> >
> > Yong Huang
> >
> > --- Igor Neyman <ineyman_at_perceptron.com> wrote:
> > > As it was recently discussed,
> > >
> > > Insert /*+ append */ into <destination_table> select * from
> > > <source_table>
> > >
> > > will produce minimum redo/undo if <destination_table> specified as
> > > "nologging".
> > >
> > >
> > > But, what if <destination_table> is index-organized table?
> > > Is it possible to achieve the same results (in regards to amount of
> > > redo/undo)?
> > >
> > > Igor Neyman, OCP DBA
> > > ineyman_at_perceptron.com
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Received on Wed Nov 05 2003 - 12:39:26 CST
