OLEDBException: ORA-12154: TNS Could Not Resolve Service Name
(Doc ID 256936.1)
Last updated on MARCH 04, 2022
Applies to:
Oracle Provider for OLE DB - Version 10.2.0.1 to 11.2.0.4 [Release 10.2 to 11.2]Microsoft Windows (32-bit)
Symptoms
While using ASP.NET with Oracle Provider for OLEDB you encounter:
OLEDBException: TNS-12154: TNS could not resolve service name
The same connection string is successfully used outside of IIS with a simple OLE DB test application so the alias is valid.
Cause
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In this Document
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