Date: Wed, 8 Jul 2015 13:21:41 -0500
From: "ktm@rice.edu" <ktm@rice.edu>
To: Tim Clotworthy <tclotworthy@bluestonelogic.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Oracle to PostgreSQL Migration - Need Information
Message-ID: <20150708182141.GJ24774@aart.rice.edu>
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On Wed, Jul 08, 2015 at 12:30:29PM -0400, Tim Clotworthy wrote:
> Hello,
> 
> I have a customer that is about to undertake a migration of an Oracle 11g
> database to PostgreSQL 9.x (exact version to be determined). I am talking
> not only of the migration of schemas and data, but also of a substantial
> codebase of Pl/SQL stored procedures, as well as many triggers.
> 
> I don't think they know yet what they are up against. Everything I have
> read is that this is a very substantial effort. At this stage, they would
> be particularly interested in realistic and practical information on how to
> estimate the effort required as well as any best-practices or guidance on
> transition strategies.
> 
> I have found official documentation on the PostgreSQL site for porting
> Pl/SQL to PL/pgSQL. This is excellent technical documentation. However,
> there success will require that they are well prepared realistically
> understanding the scope of the effor they are asbout to undertake.
> 
> Thanks for any response!

Hi Tim,

You might want to give ora2pg a go (http://ora2pg.darold.net):

Features included:

        - Export full database schema (tables, views, sequences, indexes), with
          unique, primary, foreign key and check constraints.
        - Export grants/privileges for users and groups.
        - Export range and list partition.
        - Export a table selection (by specifying the table names).
        - Export Oracle schema to a PostgreSQL 8.4+ schema.
        - Export predefined functions, triggers, procedures, packages and
          package bodies.
        - Export full data or following a WHERE clause.
        - Full support of Oracle BLOB object as PG BYTEA.
        - Export Oracle views as PG tables.
        - Export Oracle user defined types.
        - Provide some basic automatic conversion of PLSQL code to PLPGSQL.
        - Works on any plateform.
        - Export Oracle tables as foreign data wrapper tables.
        - Export materialized view.
        - Show a detailled report of an Oracle database content.
        - Migration cost assessment of an Oracle database.
        - Migration cost assessment of PL/SQL code from a file.
        - Migration cost assessment of Oracle SQL queries stored in a file.
        - Generate XML ktr files to be used with Penthalo Data Integrator (Kettle)
        - Export Oracle locator and spatial geometries into PostGis.

Regards,
Ken


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