You can use Windows Services Control Manager to identify all database instances and services associated with an Oracle home.

1. Log in to a cluster node as a user with Administrator privileges.
2. Use the Windows Services Control Manager to locate the Oracle services related to the Oracle home.
   Look for any Oracle services (their names begin with Ora) that access the Oracle home you are removing and have the status Started.

   To determine which Oracle home a service is associated with, check "Path to Executable" for a service to see the directory where the executable for the service is located.