Обсуждение: Oracle / Postgres Interface

"Shah, Sameer" <SShah@vicr.com> writes:

>     1. I have DataBase-A which is Oracle on Server A with FunctionA
>        (PLSQL)
>     2. I have DataBase-B which is Postgress on Server B with FunctionB
>        (PgSQL)
>     3. I need to call FunctionA from FunctionB

As far as I know, the on'y way to do this is to write a Postgres
function (function B) in C that links with the Oracle client libraries,
connects to Oracle, and calls your function A.

-Doug
--
Let us cross over the river, and rest under the shade of the trees.
   --T. J. Jackson, 1863

Doug McNaught <doug@mcnaught.org> writes:

> "Shah, Sameer" <SShah@vicr.com> writes:
>
> >     1. I have DataBase-A which is Oracle on Server A with FunctionA
> >        (PLSQL)
> >     2. I have DataBase-B which is Postgress on Server B with FunctionB
> >        (PgSQL)
> >     3. I need to call FunctionA from FunctionB
>
> As far as I know, the on'y way to do this is to write a Postgres
> function (function B) in C that links with the Oracle client libraries,
> connects to Oracle, and calls your function A.

If performance isn't an issue it might be faster to get going using a PerlU
function in Postgres that uses DBD::Oracle to connect to Oracle.

It's the same thing but you don't have to learn two new C APIs. If you already
know how to use Pro*C and the postgres C API then there's probably no benefit.

--
greg