public int getConnectionPoolMaximumExcessIdle() {
    return Integer.parseInt(getProperty(SERVER_JDBC_CONNECTION_POOL_MAX_IDLE_TIME_EXCESS));
  }
Gets the maximum amount of time in seconds that connections beyond the
minimum pool size should remain in the pool. This should always be less
than than the value returned from {@link #getConnectionPoolMaximumIdle()}
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java