oracle11g Uninstall, 10g version generic

In view of some of the more bizarre Oracle problems, I have not met can not help to solve. And more anxious to catch up with the time of the pro, I can only recommend unloading in the installation of the method, the general time is also 1 hours to 1.5 hours, remember to follow the steps to delete, do not miss the deletion, or easily lead to installation failure ...

Completely uninstall the oracle11g step (remember, there is no confidant in the second step to uninstall the product together):
1. Start-> Settings-> Control Panel-> Management Tool-> Service stop all Oracle services.
2, Start-> Program->oracle-orahome81->oracle installation products-> Universal Installer, click "Uninstall Product"-"Expand All", select except "Oradb11g_home1" All directories outside of the directory, delete.
5. Run regedit, select Hkey_local_machine\software\oracle, and press Del to delete this entry.
6. Run regedit, select HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, scroll through this list, and delete all Oracle portals (keys starting with Oracle or Oraweb).
7. Run Refedit,hkey_local_machine\system\currentcontrolset\services\eventlog\application and delete all Oracle portals.
8. Delete all keys prefixed with Ora, Oracle, ORCL or Enumora in the HKEY_CLASSES_ROOT directory.
9. Delete Hkey_current_user\software\microsoft\windows\currentversion\explorer\menuorder\start Menu\ All keys in the programs that start with Oracle.
10, delete Hkey_local_machine\software\odbc\odbcinst. INI In addition to the Microsoft ODBC for Oracle registry key, all the keys that contain Oracle.
11. My Computer----high-level----environment variables, delete environment variables classpath and path for Oracle settings.
12. Remove all Oracle-related groups and icons from the desktop, startup Group, and Programs menu.
13. Delete all Oracle-related directories (if not deleted, restart the computer and then delete it) include:
1.c:\program file\oracle directory.
2.oracle_base directory (the installation directory for ORACLE).
3.c:\windows\system32\config\systemprofile\oracle directory.
4.c:\users\administrator\oracle or C:\Documents and settings\administrator\oracle directories.
5.c:\windows Delete the following files Oracle.ini, Oradim73. INI, Oradim80. INI, Oraodbc.ini, and so on.
If there is a [ORACLE] tag segment in the Win.ini file under 6.c:\windows, delete the segment.
14. If necessary, delete all Oracle-related ODBC DSN

oracle11g Uninstall, 10g version generic