title: Tomcat Full GC Issue
body: <p>My Application stops working and below line shown in server logs constantly : 
  [Full GC 1989887K->1989887K(1989888K), 3.8619050 secs]</p>
  
  <p>My Server configuration is as below : </p>
  
  <pre><code>server
  -verbose:gc
  -Xms2g
  -Xmx2g
  -XX:NewSize=1048m
  -XX:MaxNewSize=1048m
  -XX:PermSize=256m
  -XX:MaxPermSize=256m
  -XX:SurvivorRatio=8
  -XX:TargetSurvivorRatio=8
  -XX:+UseParNewGC
  -XX:ParallelGCThreads=4
  -XX:+CMSParallelRemarkEnabled
  -XX:+AggressiveOpts
  -XX:GCTimeRatio=20
  -XX:-HeapDumpOnOutOfMemoryError"
   OS specific support.  $var _must_ be set to either true or false.
  cygwin=false
  darwin=false
  os400=false
  case "`uname`" in
  CYGWIN*) cygwin=true;;
  Darwin*) darwin=true;;
  OS400*) os400=true;;
  esac
  </code></pre>
  
  <p>I am using Java 1.7, Tomcat 8 and postgres as database</p>
  
  <p>Kindly help as I need to restart server after every 2 hours to start application working again</p>