Which ODBC driver to choose for a multi version , multi home installation

I have a situation where I need to rollout a piece of software which connects to an Oracle 64 bit database. The client group that I need to rollout to includes a combination of Oracle8, Oracle 9 and Oracle 10. Some installations have dual 8/9 Homes and I am sure that there are other combinations.
The software connects through either a normal oracle connection or can connect through ODBC. However, the normal connection software will not connect through Oracle below Oracle 9, So I am left with an ODBC driver. I am using the microsoft driver currently - it is very slow, but it is at least already installed on all the user pc's. However I believe that it does not work with dual homes.
Is there an Oracle driver that would meet our needs?, i.e allow connections from version 8 to 10 with any combination of homes.

You're right that the Microsoft ODBC driver for Oracle doesn't support multiple Oracle Homes. It also isn't updated regularly, so it doesn't support a lot of functionality that was added in Oracle 9 or 10.
Exactly what versions of Oracle does "Oracle8" comprise. There is a world of difference between having some 8.1.7 databases still in prod and having some ancient 8.0.4 databases around. Depending on the "Oracle8" variants in the world, you should be able to use either the 8.1.7.x or 9.2.0.x Oracle ODBC driver should work for you. You'll need to install an appropriate Oracle Home for that driver (i.e. the machine will have to have an 8.1.7 Oracle Home if you're going to use the 8.1.7.x Oracle ODBC driver, it'll need a 9.2 Oracle Home if you're going to use the 9.2.0.x Oracle ODBC driver). Since 8.1.7 has been desupported, I'm hopeful that you can use the 9.2.0.x Oracle ODBC driver since Oracle 9.2 will at least be supported a few more months.
Justin

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