Forum Discussion
Issues with connection to Oracle Database data source in Power BI Desktop RS May 2026
There are two issues revealed in May 2026 version of Power BI Desktop RS app when working with "Oracle Database" data source. [1] From May 2026 version Power BI Desktop RS cannot connect to TNS name...
No, it's wrong assumption. When IFILE is used in tnsnames.ora, Power BI Desktop RS May 2026 gives connection error. But when IFILE replaced with actual TNS descriptions, it gives "ORA-01017 (invalid username/password)" error. Only rollback to January 2026 version completely resolves these issues.
Hi Andrikano
Based on your testing, this does look like version-specific behavior. Since the rollback resolves issue, it’s likely something changed in the May 2026 build. Though I would avoid classifying it as a confirmed connector bug without Microsoft validation.
Note: Drafted with AI assistance and reviewed before posting.Hello Andrikano,
The response you are referring has been removed due to inaccuracy. Thank you for responding and communicating the inaccuracies.
Best,
Natalie H.
Community Manager
