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Re: Best practice to load a huge table from ORACLE to PG

From: "Adonias Malosso" <malosso(at)gmail(dot)com>
To: "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Best practice to load a huge table from ORACLE to PG
Date: 2008-04-28 21:37:46
Message-ID: 8a5d3c890804281437u6bd655b3k9a38a77a49dc5552@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
Jonah,

Thank you for the answer. Good to know about this enterprise DB feature.

I´ll follow using pgloader.

Regards.

Adonias Malosso

On Sat, Apr 26, 2008 at 10:14 PM, Jonah H. Harris <jonah(dot)harris(at)gmail(dot)com>
wrote:

> On Sat, Apr 26, 2008 at 9:25 AM, Adonias Malosso <malosso(at)gmail(dot)com>
> wrote:
> > I´d like to know what´s the best practice to LOAD a 70 milion rows, 101
> > columns table
> > from ORACLE to PGSQL.
>
> The fastest and easiest method would be to dump the data from Oracle
> into CSV/delimited format using something like ociuldr
> (http://www.anysql.net/en/ociuldr.html) and load it back into PG using
> pg_bulkload (which is a helluva lot faster than COPY).  Of course, you
> could try other things as well... such as setting up generic
> connectivity to PG and inserting the data to a PG table over the
> database link.
>
> Similarly, while I hate to see shameless self-plugs in the community,
> the *fastest* method you could use is dblink_ora_copy, contained in
> EnterpriseDB's PG+ Advanced Server; it uses an optimized OCI
> connection to COPY the data directly from Oracle into Postgres, which
> also saves you the intermediate step of dumping the data.
>
> --
> Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
> EnterpriseDB Corporation | fax: 732.331.1301
> 499 Thornall Street, 2nd Floor | jonah(dot)harris(at)enterprisedb(dot)com
> Edison, NJ 08837 | http://www.enterprisedb.com/
>

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