I uninstalled 11g database from my machine but the install/uninstall utility didn't delete the oracle home folder. I have been able to manually delete everything left behind, except the oci.dll in the bin folder. I get an error message from Windows that I don't have access or the file is in use. I'm logged in as Administrator.
Sol: To delete this file first Remove Oracle refereces from the path. To edit your path go to:
Start->Settings->Control Panel->System->Advanced->Environment Variables
Then restart the system and you remove the folder product from oracle home, I am pretty sure the error would not occur again IA.