title: Oracle.ManagedDataAccess TNS_ADMIN setting by environment variable
body: <p>I am trying to configure my solution that is using the Oracle.ManagedDataAccess library to use TNS names as follows:</p>
  
  <pre><code>&lt;oracle.manageddataaccess.client&gt;
      &lt;version number="*"&gt;
        &lt;settings&gt;
          &lt;setting name="TNS_ADMIN" value="C:\oracle\TNS" /&gt; 
        &lt;/settings&gt;
      &lt;/version&gt;
    &lt;/oracle.manageddataaccess.client&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>It is possible to set the TNS_ADMIN path value from the environment variables at runtime by code?</p>
  
  <p>Thanks.</p>