title: Invalid IsolationLevel parameter: must be ReadCommitted or Serializable
body: <p>In my .NET 3.5 project, I have created an OracleConnection object called conn. </p>
  
  <p>Then i create a Transaction object as follows :</p>
  
  <pre><code>using (OracleTransaction trans = conn.BeginTransaction(IsolationLevel.RepeatableRead))
  </code></pre>
  
  <p>WHen the control goes to the Transaction creation line, it gives an exception as </p>
  
  <blockquote>
    <p>System.ArgumentException was unhandled
    Message="Invalid IsolationLevel
    parameter: must be ReadCommitted or
    Serializable."
    Source="System.Data.OracleClient"</p>
  </blockquote>
  
  <p>Has anyone faced this problem ? Why can i not set it to RepeatableRead ?</p>
  
  <p>Thanks,
  Chak.</p>