1, as shown, unloading with Oracle's own Oracle Universal Installer tool, uncheck the Oracle home directory or you will be prompted to uninstall deinstall use the home directory, and finally actually used in the warning box prompts deinstall path to uninstall Main directory.
2, should first delete all of the following components, as shown, do not check your home directory
3, subsequent cleaning can refer to the online tutorial, a lot of reference have not indicated above this point. Official own uninstall tool certainly be uninstalled.