References:
- https://www.youtube.com/watch?v=V4mOL5o_o68
- https://docs.oracle.com/cd/B25329_01/doc/install.102/b25143/toc.htm#BABFFJIB
o Step #01: Delete environment variable
— Open Environment Variables
— ORACLE_HOME/bin in PATH environment
o Step #02: Delete registry of Oracle 18c
— In the Search box, type “regedit” Press Enter
— Two types of registry to be deleted.
· (1) For Oracle Database 18c Software
· (2) For Oracle Database 18c Background Services
— Delete registry entries
· HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services
— Delete all nodes with “Oracle” prefix such as
§ OracleSchedulerORCL
§ OracleOraDBHome1MTSRecoveryServices
§ OracleOraDBHome1TNSListener
§ OraRemExecServiceV2
§ OracleServiceORCL
§ OracleVssWriterORCL
· HKEY_LOCAL_MACHINE SOFTWARE ORACLE
— Delete the whole ORACLE node which contains 4 child nodes
§ KEY_OraDB18Home1
§ ODP.NET
§ ODP.NET.Managed
§ OracleMTSRecoveryServices
o Step #03: Restart the system
o Step #04: Delete the Oracle Home User and Groups
§ In the Search box, type “lusrmgr.msc”
§ On the lusrmgr window, select “Local Users and Group (Local)” top node
§ Click “Users” child node Delete any user that is associated with Oracle
§ Click “Group” child node Delete all groups prefixed by “ORA_”
o Step #05: Delete all related DB_HOME folders.
