Oracle Uninstallation and Installation

First step: Stop all Oracle-related services in the Services window

Step Two: uninstall the Oracle software "All Programs--oracle installation directory--oracle install product--universal Installer"

Step three: Delete the contents of the registry, click Start-and-run input regedit to enter the Registry Editor;

Note: Some of these registry keys may have been removed when uninstalling Oracle products.

1. Delete all directories under the HKEY_CLASSES_ROOT directory prefixed with Ora, Oracle, ORCL or Enumora;

2. Delete hkey_current_user/software/microsoft/windows/currentversion/
All keys in Explorer/menuorder/start menu/programs that start with Oracle;

3, delete hkey_local_machine/software/oracle directory;

4. Delete all directories in hkey_local_machine/system/currentcontrolset/services that begin with Oracle or Oraweb;

5. Delete all directories in hkey_local_machine/system/controlset001/services that begin with Oracle or Oraweb;

6. Delete all directories in hkey_local_machine/system/controlset002/services that begin with Oracle or Oraweb;

7. Delete all directories in hkey_local_machine/system/currentcontrolset/services/eventlog/application that begin with Oracle;

8, delete Hkey_local_machine/software/odbc/odbcinst. INI in
All keys except Microsoft ODBC for Oracle registry keys that contain Oracle.

Fourth Step: Delete all of the Oracle's groups and icons from the start-to-program. The default is deleted when the software is removed, check whether there is still, if any, delete;

Fifth Step: Delete all of the directories associated with Oracle:

Note: Restart the computer first. When deleting the Oracle files in the installation directory, there may be a phenomenon that individual files cannot be deleted, such as the Oci.dll file in the bin directory, the only way to solve this problem is to restart the system and then delete the file again.

1, delete C:\Documents and setting\ system user name \localsettings\temp directory of the temporary folder beginning with Ora;

2, delete C:\Program files\oracle folder;

3. Delete the directory folder where Oracle is installed;

The above is the complete step to uninstall Oracle, after several validations, no problem.

The following begins the installation process for Oracle:

The above is the installation of the database 12 steps;

Below is Build Library:

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Oracle Uninstallation and Installation