The deinstallation tool removes Oracle Clusterware and Oracle Automatic Storage Management (Oracle ASM) from your server, and Oracle Database installations, for both Oracle RAC and single-instance databases.
About the Deinstallation Tool
The deinstallation tool stops Oracle software, and removes Oracle software and configuration files on the operating system.
Deinstallation Tool Command Reference
You can use the deinstallation tool to remove Oracle software. You can run this command in standalone mode, from an Oracle home directory, or through the installer.