How to Set or Switch Oracle Homes on Windows
(Doc ID 969581.1)
Last updated on APRIL 09, 2023
Applies to:
Oracle Database - Enterprise Edition - Version 9.2.0.1 and laterOracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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)
Goal
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.
Solution
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In this Document
| Goal |
| Solution |
| 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) |
| Summary |