Connecting to Oracle from Within Visual Studio Fails With: ORA-12154 or ORA-6413, While Compiled Applications Run Fine
(Doc ID 334968.1)
Last updated on FEBRUARY 08, 2019
Applies to:Oracle Data Provider for .NET - Version 10.2.0.1.0 and later
Oracle Net Services - Version 220.127.116.11.0 to 10.2.0.1.0 [Release 8.1.7 to 10.2]
Oracle Objects for OLE - Version 18.104.22.168 to 10.2.0.1 [Release 8.1.7 to 10.2]
Oracle ODBC Driver - Version 22.214.171.124.0 to 10.2.0.1.0
Oracle Provider for OLE DB - Version 126.96.36.199 to 10.2.0.1.0
Microsoft Windows x64 (64-bit)
***Checked for relevance on 14-Jun-2016***
You are developing an application inside Microsoft Visual Studio and receive one of the following errors when trying to connect to the Oracle database
ORA-12154: TNS:could not resolve the connect identifier specified
ORA-6413: Connection not open.
- You can compile your application and then run the executable outside this location and it connects and executes successfully
- You have installed 32-bit Oracle client software on a 64-bit Windows operating system (OS)
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