Обсуждение: Database Migration

On Wednesday 03 October 2007 01:01:00 Khan, Mahmood Ahram wrote:
> Hi,
>
>
>
>
>
>
> 1.    What are necessary steps we should follow for migration of a
> production database from Oracle 10g (10.2.0.1) to PostgreSQL 8.2.4?
> 2.    What are the most common issues we get and how to fix them in
> migration procedure?
> 3.    Any tools available for doing this migration activity. If yes,
> the URLs of the tools.
>
>
>
>
>
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> Thanks & Best Regards
>
>
>
> M.AHRAM KHAN


EnterpriseDB has a toolset to migrate data from Oracle into EnterpriseDB
(which of course is PostgreSQL plus). I'm not sure if their tool migrates
from Oracle into generic PostgreSQL as well - I had heard that this was in
the works. It might be worth a look.

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Khan, Mahmood Ahram wrote:
> Hi,
>
>
> 1.    What are necessary steps we should follow for migration of a
> production database from Oracle 10g (10.2.0.1) to PostgreSQL 8.2.4?
> 2.    What are the most common issues we get and how to fix them in
> migration procedure?
> 3.    Any tools available for doing this migration activity. If yes,
> the URLs of the tools.

In general it is not very difficult, there are exceptions of course but
it is more time consuming than difficult.

You can use Orafce:

http://pgfoundry.org/projects/orafce/

This will get you a lot of compatibility with data types and function.

The #1 complaint I hear about migrating to Oracle is the lack of the
Oracle feature Packages. Some of this can be simulated (very little)
with the use of schemas but for the most part you should just consider
rewriting all your procedures in your favorite pl language.

Sincerely,

Joshua D. Drake



>
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>
>
>
>
>
> Thanks & Best Regards
>
>
>
> M.AHRAM KHAN
>
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>
>


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Hi,

On Wed, 2007-10-03 at 09:01 -0600, Kevin Kempter wrote:
> I'm not sure if their tool migrates  from Oracle into generic
> PostgreSQL as well

After migrating to EDB, you can run PostgreSQL's pg_dump against EDB and
dump the database. Of course, schema will probably need to be edited
before that dump is reloaded to PostgreSQL.

Regards,
--
Devrim GÜNDÜZ
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