Failed to query database in oracle virtual machine

Hello I am exposing a cloud service with WCF which is connected to the oracle database in a virtual machine on my machine if Client runs perfectly, but want to use the cloud service mark me the following error: 
"An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.ArgumentException: Unable to find the requested .Net Framework Data Provider.  It may not be installed.
   at System.Data.EntityClient.EntityConnection.GetFactory(String providerString)."
What I understand is some connection to Oracle, but that is not, alguine can help me.
I am using Entity Framework. 

Hi,
From my experience, this thread seems more related with
the Entity Framework forum, but anyway, you should use a data provider that can handle EF in Oracle. There are couple of 3rd party data providers for oracle that support entity framework - devart, datadirect, and Oracle also has a new version of the
ODP that supports EF.
You can see the list here:
http://go.microsoft.com/fwlink/?LinkId=143699
Hope this helps
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