Example : How to uninstall/remove Oracle 10g from Windows 7/8/10 os properly.
- start menu - search & click 'Oracle-OraDb10g_home1' folder - Select & Click 'Universal Installer' - click on 'Deinstall Products' option - click & check 'OraDb10g_home1' check box - click on 'Remove'
button.
NB : After uninstallation, You can also delete Oracle folder manually, if any, present in installed drive location.Example : How to remove the opening error “ORA-12560: TNS Protocol Adapter Error” in Oracle 10g when we insert even the correct user name and password in Windows 10/11 OS properly.
- Press Windows + R - services.msc.
- Start these services:
- - OracleServiceORCL
- - OracleOraDb10g_homeTNSListener or OracleOraDb10g_homeliSQL*plus
Restart the above two services by Right-click → Start in appeared service list. Now fill the correct user name and password again, it will open the Oracle. 
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