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File Or Assembly Name Oracle.DataAccess was not Found. (Doc ID 225549.1)

Last updated on APRIL 09, 2020

Applies to:

Oracle Data Provider for .NET - Version and later
Microsoft Windows x64 (64-bit)
Microsoft Windows (32-bit)

*** Checked for relevance on 17-Jul-2017 ***


Unhandled Exception: System.IO.FileNotFoundException: File or assembly name
Oracle.DataAccess, or one of its dependencies, was not found.
File name: "Oracle.DataAccess"

Fusion log follows:
=== Pre-bind state information ===
LOG: DisplayName = Oracle.DataAccess, Version=, Culture=neutral,
LOG: Appbase = C:\
LOG: Initial PrivatePath = NULL
Calling assembly : ConsoleApplication1, Version=1.0.1104.15973, Culture=neutral,

LOG: Application configuration file does not exist.
LOG: Publisher policy file is not found.
LOG: Host configuration file not found.
LOG: Using machine configuration file from
LOG: Post-policy reference: Oracle.DataAccess, Version=, Culture=neutral
, PublicKeyToken=89b483f429c47342
LOG: Attempting download of new URL file:///C:/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/Oracle.DataAccess/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/Oracle.DataAccess.EXE.
LOG: Attempting download of new URL file:///C:/Oracle.DataAccess/Oracle.DataAccess.EXE.


You have either migrated your .Net Application to another machine with a different version of ODP.Net, or you have upgraded your Oracle Data Provider for .Net.


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