Completely uninstall Oracle11g R2 tutorial

Compared with other mysql, the installation and uninstall of Oracle is more troublesome. So far, I have specially uninstalled the previous Oracle Software and re installed it (successfully), so I have the following tutorial.

• First of all, open the services, find the services beginning with Oracle, and close all of them
  

• Click the start menu to find theOSoftware at the beginning >Universal Installer
  
  

• After clicking, the unloading interface will pop up
  

• findOraDb11g_home1Check all the contents under, and finally click delete
  
  
  
  

• Win+ROpen the running interface and inputregeditEnter to enter the registry editor

• deleteHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\All under the pathOracleThe name of the service that started
  

• deleteHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\ApplicationAll of the registryOracleAll folders at the beginning
  

• deleteHKEY_LOCAL_MACHINE\SOFTWARE\ORACLEregistry

• Delete all files in the Oracle installation directory, such as:D: All files in the directory

• Delete disk CC:\Program FilesperhapsC:\Program Files(x86)Under the directoryOraclecatalogue

• Finally, clear the deleted files in the recycle bin

• So far, the Oracle uninstall is complete.