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Re: migrate database

From: Jurijs Velikanovs <j.velikanovs_at_gmail.com>
Date: 2006-01-13 00:09:06
Message-id: d6f0def50601121509x28023d92tf52ab0ceddc3dd75@mail.gmail.com


Adar absolutely right. Instead to use "cross-platform transportable tablespace" in case of SYSTEM tablespace you have to use a "cross-platform transportable DATABASE" feature. Then you can transport a minimum set of tablespace SYSTEM, UNDO, SYSAUX. To do that you have to use RMAN, instead of the traditional transportable tablespace procedure.

If the initial question was: Can I transport a SYSTEM tablespace across different platforms?
Answer would be: Yes, with some limitations using "cross-platform transportable DATABASE", and restore through RMAN min set of tablespaces.

Limitation in that case is endian format. It is well described in the 10g doc (see below)
Cheers,
Jurijs

PS Next week I going to play with that feature, moving SYSTEM tablespace from Linux to Win. Ill update the thread with the results.

Oracle(r) Database
Backup and Recovery Advanced User's Guide 10g Release 2 (10.2)
B14191-01

Page 15-7, Cross-Platform Transportable Database: RMAN CONVERT DATABASE,

Restrictions on Cross-Platform Transportable Database The principal restriction on cross-platform transportable database is that the source
and destination platform must share the same endian format. For example, while you
can transport a database from Microsoft Windows to Linux for x86 (both little-endian),
or from HP-UX to AIX (both big-endian), you cannot transport a whole database from
HP_UX to Linux for x86 using this feature. You can, however, create a new database on
a destination platform manually, and transport needed tablespaces from the source
database using cross-platform transportable tablespace as described in

On 1/12/06, Yechiel Adar wrote:
> The replies I saw are mixing two concepts:
> 1) Using RMAN to copy a DATABASE to new platform, which copy the whole
> database, including system tablespace.
> 2) Using transportable tablespace to move TABLESPACE to a new database
> on another platform.
>
> I do not know much about RMAN so I will not touch this topic.
> Transportable tablespace is:
> 1) Exporting the metadata that describe the objects in the tablespace.
> 2) Moving the tablespace to the new location.
> 3) Running import tablespace that merge the objects metadata into an
> existing database.
>
> Since the import works against existing database, and this database
> already have SYSTEM tablespace, you can not do transportable tablespace
> for system.
>
> Adar Yechiel
> Rechovot, Israel
>
>
>
> Ignizio, Richard wrote:
>
> >When using Transportable tablespaces you cannot export the SYSTEM tablespace(but you \
can export the undo tablespace):
> >
> >exec sys.dbms_tts.transport_set_check('SYSTEM');
> >BEGIN sys.dbms_tts.transport_set_check('SYSTEM'); END;
> >
> >
> >
> >
> >
>
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

--
Jurijs
+44 7738 013090 (GMT)
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Received on Fri Jan 13 2006 - 00:09:06 CST

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