ERP 8.9 upgrade

[frown]
Hello List,
Did anybody have the following issue during ERP8.9 upgrade?

I am trying to create a Custom Install Plan for an ERP8.9 Oracle 9i upgrade and after I click OK on the Previous data source screen
I receive this error: "Cannot determine database driver name for driver type 'O'"
Any help?

Alex
Oracle, Sun, XE, ERP8.9

I have found the solution. Hope it'll be useful for others.
When I checked the environment variables I found that after "D:\PeopleSoft\B9" a semicolon sign was missed, so it was merged with the next line "c:\orant920\bin". Restored the semicolon and it started to work.

It's so simple at the end!
Alex