The Oracle home directory is located under the Oracle base directory.

In a default Windows installation, if you name the Oracle home directory dbhome_1, it appears in the Oracle base directory as follows, where username is the Oracle Installation user if you do not choose Windows security, or it is the Oracle Home user if one is specified:

DRIVE_LETTER:\app\username\product\19.0.0\dbhome_1

Ensure that the paths that you select for Oracle software, such as Oracle home paths and the Oracle base path, use only ASCII characters. Because some Oracle software directory paths use installation user names by default, this ASCII character restriction applies to user names, file names, and directory names.