title: migrate 32 bit web site to 64 bit (2008 r2) with oracle odac
body: <p>i have web site working well on win2003 32bit with oracle 10g, the develope is on XP 32bit with VS2005</p>
  
  <p>i try to move to win2008r2 64bit with oracle 11g, but i can't get the oracle to work.</p>
  
  <p>i installed the oracle client for 32bit and for 64bit</p>
  
  <ol>
  <li>using the old code</li>
  <li><p>change config file </p>
  
  <p>
      
  </p></li>
  <li><p>enabled the 32 bit system in the IIS
  AppPoll</p></li>
  <li>instaling the ODAC112021Xcopy_32bit</li>
  </ol>
  
  <p>gave me this error:</p>
  
  <pre><code>Could not load file or assembly 'Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified
  </code></pre>
  
  <p>Version=2.102.2.20 is the old assembly i used </p>
  
  <ol>
  <li>removing the local
  'Oracle.DataAccess' file from the
  web/bin folder</li>
  <li>installing the ODAC112021Xcopy_x64
  and the</li>
  </ol>
  
  <p>gave me another error</p>
  
  <pre><code>The provider is not compatible with the version of Oracle client 
  </code></pre>
  
  <p>can anyone split some light on this issue?</p>
  
  <p>Tnx
  Gil</p>