Hi Taykin, Thank you for your information. Unfortunately, we had downloaded the mentioned java version and tested on site. There is only a slight reduce in memory usage and still remains as high as 3.x GB. For your information, the current server now is having 8GB. With the mentioned java.exe usage plus each of the postgres.exe; we actually left with 3 to 5 MB. Then the entire Ridgeline NMS server hung and need to reboot. Best regards, Dennis neo