public int getConnectionPoolMaximumAge() {
    return Integer.parseInt(getProperty(SERVER_JDBC_CONNECTION_POOL_MAX_AGE));
  }
Gets the maximum amount of time in seconds any connection, whether its been
idle or active, should even be in the pool. This will terminate the
connection after the expiration age and force new connections to be opened.
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java