Starting windows services starts database automaticaly and maintain services on Windows

Sometimes starting the Windows Oracle services starts the database automatically. You can check this in Windows registry as mentioned below.

Open the registry with regedit.   

HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\oracle_home_name.

There will be a key called:

ORA_SID_AUTOSTART.  SID is your database SID.

This key should be set to TRUE.  If you want to start the database automatically once the service is started.  

If you want to manually start the database set ORA_SID_AUTOSTART to FALSE.  The service will start but not the database.  

There is also an ORA_SID_SHUTDOWN which you want to be TRUE so that if the server is shut down the service will shutdown the database automatically.

For Deleting a service

you can use 

> oradim or sc delete

 

Regards,

Navaneeth