Re: migrate from PostgreSQL to Oracle
- From: jo <jose.soares@xxxxxxxxxxxxxx>
- To: Igor Neyman <igor.neyman@xxxxxxxxx>
- Date: Wed, 24 Oct 2012 16:29:19 +0200
Yes Igor,
I don't have any problems with PostgreSQL, I know how to dump a pg database,
my problem is how to upload the pg dump file into Oracle.
j
Igor Neyman wrote:
> Postgres is definitely capable of dumping data into flat (CSV) file,
> using COPY command.
>
> Another option is direct connection between Oracle and Postgres using
> Heterogeneous Services (ODBC).
> I used it successfully to do conversion, though in opposite direction:
> from Oracle to Postgres.
>
> Regards,
> Igor Neyman
>
> On Wed, Oct 24, 2012 at 3:38 AM, Bobak, Mark <Mark.Bobak@xxxxxxxxxxxx
> <mailto:Mark.Bobak@xxxxxxxxxxxx>> wrote:
>
> Jo,
> I'm not at all familiar with pg or pg_dump, however, if pg is
> capable of efficiently dumping data to flat files, my first
> suggestion would be to write a formatted text file, perhaps csv,
> and use Oracle external table to bulk load. Insert /*+ append */
> into oracle_table select * from external_table would do it.
>
> Also, gives you opportunity to use nologging and do any necessary
> data transformations on the fly by adding functions on columns in
> select list, and finally, to do index builds (also nologging)
> after data loads.
>
> This approach should be pretty performant.
>
> Hope that helps,
>
> -Mark
> Sent from my Samsung Galaxy Note™, an AT&T LTE smartphone
>
>
>
> -------- Original message --------
> Subject: migrate from PostgreSQL to Oracle
> From: jo <jose.soares@xxxxxxxxxxxxxx
> <mailto:jose.soares@xxxxxxxxxxxxxx>>
> To: ORACLE-L <oracle-l@xxxxxxxxxxxxx <mailto:oracle-l@xxxxxxxxxxxxx>>
> CC: migrate from PostgreSQL to Oracle
>
>
> Hi all,
>
> I'm looking for some linux script to migrate from pg to oracle.
> At the moment I dump data from pg using pg_dump in the format:
> INSERT INTO table (columns) (values)
> then I load it into the Oracle db using cx_Oracle
> this procedure is so slow, and sometimes I have to edit and modify
> data
> manually because some INSERT format aren't compatible.
> Is there any interesting linux script to do this more easily?
>
> thanks
> j
>
>
>
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>
>
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>
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