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Select the system variable Path and edit the Path variable to remove any Oracle entries.To backup Oracle Database Services registries go to hkey_local_machine inside the registry thrones editor and after that go to sub directory Systems then to CurrentControlSet.First open the command prompt and try to connect sql server as per your environment credential.SQL alter database open; Database altered.If you want to save backups then do not escapist delete flash_recovery_area.This visual collection of keys includes those that begin with the following: EnumOraHomes studio OracleConfig OracleDatabase OracleHome OracleInProcServer OracleProcess oradc orammccfg10 orammcpmon10 Oraoledb OraPerfMon orclmmc orclsso Go to hkey_current_user.Oracle Home welle is the directory where oracle database software is installed cricket in your operating systems file windows structure.Right click CurrentControlSet and select export.Note that even if the OUI is no longer available or doesn't work, simply following the remaining steps should disk still be sufficient.This ocean requires us to learn the proper way of uninstalling oracle db from the windows system.This contains registry entires for all Oracle products.Step # 6: Alter database to open state.Under the software search for directory Oracle.Environment ocean Variable, this PCs Properties Advance System Settings System properties (go to the Advance Tab) Environment Variable.SQL show parameter db_recovery_file_dest; name games type value db_recovery_file_dest string C:appxyzflash_recove ry_area db_recovery_file_dest_size big integer 3852M Note : Here i did escapist 'xyz' in C:appxxxflash_recovery_area.For example: set run the localconfig batch file with the delete option to delete the OracleCSService link service. To delete this service without deleting the Oracle home, perform the following: Open a command prompt window.
Delete directory on the local node : Done.
Open System from the Control Panel.
For that go to hkey_local_machine and then go to sub directory software.
If you did not choose Automatic Storage Management as a storage or recovery option, you can delete the oracle 11g windows delete database OracleCSService service.
Select the Explore All Users option.