Delete Oracle

To delete oracle first of all shut down all the running services and then run the uninstaller program.

Then go to your windows and click on run their type regedit and registy window will come up

go to following location

HKEY_LOCAL_MACHINE

Go to software

Go to oracle and delete all the instances of the installation.

Within oracle itslef you will get a folder called as sysman.

Remove the entries for installation from their also.


Now again within HKEY_LOCAL_MACHINE you will find SYSTEM

Within System you will get Folders ControlSet001,ControlSet003 and CurrentControlSet

Expand each of them one by one.Select services tab their and then go to all the isntances starting from Oracle there find the keys corresponding to your isntallation and delete it.Be very carefule because if you will delete the wrong file there is no way to get it back.