title: Query of a GUID field doesn't work entity framework and Oracle
body: <p>I have the latest version of Oracle Data Access Components (ODAC)  (12.1.0.1.0) and am using it with EF 5 database first. </p>
  
  <p>in my data database i have a field of type RAW(16) 
  When the data is saved into the database, the format is upper case without any dash (ex.: A0D8F7E720DDBF4296C932F7A730A635). </p>
  
  <p>I try to query the entity with a where clause on this GUID field but cannot get any result. Our where clause looks like this (C#) </p>
  
  <pre><code>Context.Users.where(x=&gt;x.GuidField == anotherGuid);
  </code></pre>
  
  <p>Both variable are GUID type. </p>
  
  <p>The field GuidField is RAW(16) in the database but entity framework map it as GUID</p>
  
  <p>anyone has any ideas.</p>
  
  <p>Thanks in advance</p>