One last piece of info...from a database/client connectivity perspective, I think this should work OK but it's not officially supported. Check out Metalink 207303.1 for specifics. Basically, the 8.1.7 client WAS supported for 10.2 but is no longer. Client 9.2.0.4 and above is supported for 10.2.0 if the customer has Extended Support. -joe ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dennis Williams Sent: Monday, December 29, 2008 11:54 AM To: Alex Fatkulin Cc: oracle-l Subject: Re: Oracle 8i and 9i on same Windows server? Thanks everyone for your prompt replies. And on a holiday week at that! I've passed your replies along to the Windows administrators to help them make a decision. Merry Christmas and Happy New Year to all. Dennis Williams On Mon, Dec 29, 2008 at 12:32 PM, Alex Fatkulin <afatkulin@xxxxxxxxx> wrote: I was running 8i home with both 10G and 11G homes on the same Win box without any troubles. these were database homes though, but I don't see any immediate reasons why it would work for a database and wouldn't for a client On Mon, Dec 29, 2008 at 12:38 PM, Dennis Williams <oracledba.williams@xxxxxxxxx> wrote: > List, > > We are upgrading a database server to Oracle 10g (10.2.0.4) over the > holiday. It was just discovered that one Windows report server is using an > Oracle 8i client (Windows 2000 I think). Has anyone had any problems with > this configuration? As a contingency, we are considering installing the 9i > client, but want to keep the 8i client available as a contingency. Does > anyone recall any problems installing the 9i client without disturbing the > existing 8i client? > > Thanks, > Dennis Williams -- Alex Fatkulin, http://www.linkedin.com/in/alexfatkulin