is there anyone who have multiple home of Oracle 805 and 816 on same machine(NT)?
i have oracle 805 in c:\orant and want to install 816 in d: drive.
during installing i gave oracle name to ora8i and path to d:\orant\ora8i. and then i got message -"The ORACLE_HOME environment variable is currently set. This will prevent proper use of multiful ORACLE HOME and since it is not required for any Oracle product functiion, it will be unset in your environment."

is there a procedure to be handled before pre-installation? please help me out to have multi oracle home.