title: Repeatedly error out of memory in weblogic 12
body: <p>Some days ago we move our application from wls  10.3.5.0 (Java6) to wls 12.1.3.0.0(Java7). We have test server  where every day bamboo agent deploy couple of application and run some test against this server. Problem is when we upgrade to wls 12 then there is error out of memory exception after 2-3 days:</p>
  
  <pre><code>Exception in thread "[ACTIVE] ExecuteThread: '166' for queue: 'weblogic.kernel.Default (self-tuning)'" java.lang.OutOfMemoryError: PermGen space
  Exception in thread "[STUCK] ExecuteThread: '35' for queue: 'weblogic.kernel.Default (self-tuning)'" java.lang.OutOfMemoryError: PermGen space
  </code></pre>
  
  <p>in wls 10 we dont have this problem. In web start I set up this parameters: 
  <code>-Xms2048m -Xmx2048m -XX:PermSize=512m -XX:MaxPermSize=1024m -Xss1m</code> but the error still occurs. </p>