Java失败:错误(无法分配内存)用代码12

Question

我已经写了一个程序，每天24小时后自称。我在服务器上有350个实时运行设备。我需要每天自动更新设备的报告。

@POST
@Path("/UpdateDevicesStats")
public static void updateAllLiveDevicesStats(){
long period = 1*24*60*60*1000;
long delay = 0;
new Timer().schedule(new TimerTask() {
    @Override
    public void run() {
        try {
            ArrayList<Device> devices = DeviceBuilder.getCurrentLiveDevices();
            try {
                for(int i=0;i<devices.size();i++){
                    System.out.println("Updating Device = "+devices.get(i).getId());
                    // This below line is custom code line.
                    // This is not any in-built library. 
                    SummaryBuilder.updateDBStats(devices.get(i).getId());

                    Thread.sleep(1*60*1000);
                }
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}, delay, period);
}

当我运行此代码时。它进行了4到5个小时的很好，但此后向我展示了这一点：

failed: error='Cannot allocate memory' (errno=12)
There is insufficient memory for the Java Runtime Environment to continue. Native memory allocation (mmap) failed to map 12288 bytes for committing reserved memory.
ignoring option PermSize=500m; support was removed in 8.0
ignoring option MaxPermSize=256m; support was removed in 8.0
Setting property 'maxSpareThreads' to '75' did not find a matching property.

有人知道其他更好的方法吗？

Answer 1

我通过更新统计数据和 Thread.sleep();之后以及其他一些后的语句泄漏的语句来解决Runtime.getRuntime().gc();解决此问题。现在，它没有遇到任何Java堆错误。谢谢@joopeggen，@javajd。