title: java.util.NoSuchElementException: Could not create a validated object, cause: ValidateObject failed
body: <p>I wonder what the following exception means. I get this when I set testOnBorrow=ture. If I set testOnBorrow=false, I won't get this.</p>
  
  <p>I'm using MySQL 5.1.66 and commons-pool-1.5.5.jar</p>
  
  <p><code>Caused by: java.util.NoSuchElementException: Could not create a validated object, cause: ValidateObject failed
          at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1203)
          at org.apache.commons.dbcp.PoolingDriver.connect(PoolingDriver.java:180)
          ... 7 more</code></p>