Complete Oracle System (Instance & Database) Design: Steps of Implementation - Oracle 10g Database Administration Concepts and Implementation Made Simple - page 144

Oracle Software Installation: Step IX
Figure 6-15: This window will popup to mark the end of installation
process and to inform you that the software installed successfully.
If you encounter any problem during the installation phase try to
understand the error message. Most of the time these error
messages are very explanatory otherwise re-run the OUI and
select the option “Remove” installed products which will
uninstalled all the previously installed products. Once done then
do the fresh installation.