How to completely uninstall oracle 11g from windows server 2008

In 11g to uninstall oracle software, U have to manually run deinstall.bat

Its not possible thru OUI.

1. Log in as the Administrator.
2. Run  ---> Services.msc --> Stop all Oracle related Services
3. Run ---> From a cmd window, run <<ORACLE_HOME>>\deinstall\deinstall.bat.

It would prompt you for database, and it would take time to complete.

4. Delete the ORACLE_HOME directory.

In Windows server 2003, In HKLM under software u will find one oracle folder, Removing that in enough in server 2003,

Here We have to remove the following things from registry entry,

Run---> regedit--->  

HKLM\System\CurrentControlSet\Services\EventLog\Application\Oracle Services for MTS
HKLM\System\CurrentControlSet\Services\EventLog\Application\OracleDBConsole<SID>
HKLM\System\CurrentControlSet\Services\EventLog\Application\Oracle.<SID>
HKLM\System\CurrentControlSet\Services\EventLog\Application\Oracle.VSSWriter.<SID>
HKLM\CurrentControlSet\Services\Oracle11

HKLM - HKEY_LOCAL_MACHINE

then reboot the server once.

You are done with uninstallation.

Thanks.