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PostgreSQL Backend as SW Gateway to Oracle

From: "Dr(dot) Armin Schloesser" <armin(at)ap-kas(dot)ie(dot)philips(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: PostgreSQL Backend as SW Gateway to Oracle
Date: 1998-07-08 07:37:41
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers

Sorry for asking the hackers directly, but I think my question will be very implementation

specific so I think only one of yor can give me the answer or thow me out the door.

First some introductionary explanations:

We are developing a SCADA system for process automation since the last 6 years. In 1991

we changed the platform from a commercial Unix to Linux and are very happy with the choice.

Within the SCADA system we have a programming environment (called STX, similar to the IEC1131 Structured Text

language) for doing sophisticated controlling or analysis needed to run the process.

>From within this programming environment we also have the need to access a relational database to store

any data from the SCADE system into. This to give the end user also the possibilty to access this data

for offline analysis purpose e.g from a MS/Windows application.

We have implemented the PostgreSQL database during the last weeks, by using the libpq. This works fine.

Nearly all needed functionality and tools are available for it (pgaccess, Web access, ODBC, ...).

The problem is now as following:

 We have some customers, who want to have the database interface within the SCADA system (same API),

but want to have the data itself stored in a Oracle database (one customer on  Digital Unix, the other

on Win/NT).

Cause there is no Oracle client SW available under Linux and I don't want to change the API in our

programming environment I would like to have a modified PostgreSQL Backend that runs under the above

mentioned platforms and simply acts as a SW gateway to the Oracle Sever (using e.g the Oracle OCI interaface

or the PRO/C interafce). Such a solution would preserve my interface completely (still using the libpg).

Now after this lengthy introduction my questions:

1 Could you give me more information on how and where to hook into the backend code to implement this


2 Is there anyone outside that will be interested also in this approach.

3 Are you interested in getting back the new stuff

Thanks a lot for your patience!!


Dr. Armin. Schloesser

Philips Automation Projects               Phone:  +49 561 501 1395
Miramstr. 87                              Fax:    +49 561 501 1688
34123 Kassel                              Email:  armin(at)ap-kas(dot)ie(dot)philips(dot)com


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