10 Removing Oracle Database Software
These topics describe how to remove Oracle software and configuration files.
Use the deinstall
command that is included in Oracle homes to remove Oracle software. Oracle does not support the removal of individual products or components.
Caution:
If you have a standalone database on a node in a cluster and you have multiple databases with the same global database name (GDN), then you cannot use the deinstallation tool to remove one database only.