title: truncate not always working: why?
body: <p>I have defined this mapper method:</p>
  
  <pre><code>@Delete("truncate table MY_TABLE")
  public void wipeAllData();
  </code></pre>
  
  <p>and it usually works...anyway sometimes it doesn't...is there any particular reason/known bug for that?</p>
  
  <p>I'm using mybatis 3.3.0 with oracle 11g as DBMS.</p>