I have uninstalled Oracle Database Release 10.2.0.1 using the Oracle Universal installer but have noticed that after restarting the computer there is still one service listed OracleDBConsoleorcl.

I checked the service properties and found it to be residing in c:\oracle folder.

I deleted the oracle folder where the executable file reside and restarted the machine. To my surprise when I rechecked the Windows Services OracleDBConsoleorcl is still listed.

I tried to remove it using the solution suggested from theeldergeek:
C:\>sc delete nmesrvc
[SC] OpenService FAILED 1060:
The specified service does not exist as an installed service.

It did not work as I might have expected it.

Another solution, that I have outlined here are the steps on removing persistent service from cryer:

• Click Start -> Run
• On the Open text box type regedit then press Enter
• On the registry window go to
  HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services
• locate OracleDBConsoleorcl and delete the service
• Exit Registry window
• Restart the computer

After restarting the computer I tried to check again; OracleDBConsoleorcl is not there anymore in the Windows Services window.