Re: Oracle to PostgreSQL Migration - Need Information

This is almost exactly what we did around 8 years ago; obviously the
version numbers have changed. The reason we chose Postgres was the
enormous similarity between the two languages plus the overwhelming ROI
on the migration; my CEO had a spontaneous nosebleed when the Oracle
licensing costs were revealed one year.

Migration requires some thought, investigation, a clear plan and testing
- but I'm probably preaching to the converted.

We did it, we've never looked back and have had at least 8 long very
happy, stable and productive years and are looking forward to many more
(raises a glass to the developers and maintainers).

Tim Clarke

On 08/07/15 20:24, 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!