How to Set or Switch Oracle Homes on Windows
(Doc ID 969581.1)
Last updated on MARCH 12, 2019
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 to 188.8.131.52 [Release 9.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Microsoft Windows x64 (64-bit)
To provide guidance regarding setting (or better stated: not setting) Oracle Home on Windows. Unlike on other platforms, one should never keep ORACLE_HOME set as a fixed environment variable on Windows environments. This is largely due to the fact that Oracle determines where executable files reside at run-time.
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In this Document
|Why Should 'ORACLE_HOME' not be set on Oracle for Windows Environments|
|How does Oracle Determine the executable location?|
|Starting Oracle Executables|
|Modifying the default Oracle Home and PATH environment variables using the Oracle Universal Installer (OUI)|