OraOps.dll and Multiple Oracle Homes

Hi All,
I am writing a simple Windows Forms client app that is trying to connect to an Oracle 8.1.7 database. I am having a problem connecting with ODP.NET. The error I get is as follows:
"An unhandled exception of type 'System.DllNotFoundException' occurred in oracle.dataaccess.dll
Additional information: Unable to load DLL (OraOps.dll)."
I have gone through these forums and tried everything that the various people suggested:
1) I have made sure that process can access the OraOps.dll file (In my program I opened the dll and read a couple of bytes out of it.)
2) I have installed the 8.1 client into a seperate home from ODP.NET (8 client and OraOLEDB is in D:\Oracle\Ora81, 9 client and ODP.NET is in D:\Oracle\Ora92) I intalled the 8 client first, then the 9 client with ODP.NET.
3) I have used the Oracle Home Selector to ensure that the Oracle 9 home is current.
4) I have checked the path that the process is using to ensure that the Oracle 9 home is first in the path, which it is.
Can anyone think of any other things that might cause this problem? I'm out of ideas. :-(
Jeremy

Absolutely...make sure that you use OUI to install the additional Oracle_Homes so that the inventory would be updated (instead of copying over from the existing OHs).
We have a cluster, wherein we have about 6 different ORACLE_HOMEs (whether it's good idea to have so many OHs is a totally different question though)...and it works fine and it well supported by Oracle. As such, you can both NON-RAC and RAC OHs as well, if you prefer.
Thanks
Chandra

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