title: Oracle.ManagedDataAccess The system cannot find the file specified
body: <p>In my website project built on .net 3.5, when I add reference to the <strong>Oracle.ManagedDataAccess.dll</strong> by adding this in the web.config  </p>
  
  <pre><code>&lt;add assembly="Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89B483F429C47342"/&gt;
  </code></pre>
  
  <p>it give this error</p>
  
  <pre><code>Configuration Error 
    Description: An error occurred during the processing of a configuration file required to     service this request. Please review the specific error details below and modify your configuration file appropriately. 
  
   Parser Error Message: Could not load file or assembly 'Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
  </code></pre>