Re: Q: Ora 7.3.5, 8.1.5 and 8.1.6 on same NT machine?

PS. Maybe its not necessary but this article is a good place to start:

check out the following:

http://kenpo.msun.edu/grace/Oracle8i/Doc/server.815/a68694/Output/ch4.htm

Here's an excerpt , it states that you cannot implement mutliple homes in 7.x :

Before 8.0.4 Releases of Oracle for Windows NT and Windows 95 prior to release 8.0.4 only supported
single Oracle homes, allowing you to install and run Oracle products in a single  Oracle home. Different
releases of Oracle products could be installed in the same Oracle home provided they had different first or
second-digit release numbers. For example, you could install release 7.2 products and release 7.3 products
and release 7.x and 8.x products in the same Oracle home. However, you could not  install multiple third-digit
releases of the same products. For example, you could not install release 7.3.2 and release 7.3.3 of the same
Oracle products on the same computer; one installation would overwrite the other

WARNING:
Multiple Oracle homes functionality only works with releases 8.0.4 and later. It  does not work if you have,
for example, release 7.3.3 products already installed on your computer. You cannot install release 7.3.4
products in a separate Oracle home. Received on Fri Dec 08 2000 - 07:09:40 CST