the type initializer for Oracle.DataAccess.Client.OracleConnection threw an exception

[Arjun_Sarankulu]

I have created a application which connection to sql server database as well as oracle database
The application is working fine at my end
And to connect to oracle i used following namespace
using Oracle.DataAccess;
using Oracle.DataAccess.Client;
But when i run the application on user end
It gives following exception
the type initializer for Oracle.DataAccess.Client.OracleConnection threw an exception
And I am giving only exe, config file

[nmaillet]

Are the Oracle assemblies installed on the client's machine?

[Arjun_Sarankulu]

I have developed the application on remote desktop there its working fine
How to install Oracle assemblies on client machine

[sknake]

Type initializers can fail for a number of reasons. The exception being thrown should have an InnerException with more detail as to why initialization failed.

[rohitosu]

Hello,

This error is occuring because of assembly type mismatch. Try updating the assembly version which you have when/where your program is working fine.