SCC looses connection to the Sentinel Server

  • 3611027
  • 11-Dec-2007
  • 26-Apr-2012


Sentinel 5.1.3 Sentinel Control Center
Sentinel 6.0.xx
Sentinel 6.0.xx Sentinel Control Center


Periodically Sentinel Control Center (SCC) will loose connection and it will never reconnect.
There are several workstations running SCC with multiple active views running.
The only way to bring the whole thing back is to restart Sentinel.


The DAS Run Time (DAS_RT) process is responsible for updating SCC and the active views. A typical or default installation of Sentinel allocates 256 MB of RAM to the DAS_RT process. The DAS_RT logs were reviewed and analyzed. The DAS_RT logs contained java.lang.OutOfMemoryError messages. The amount of memory allocated to DAS_RT was increased from 256 MB to 1024 MB. The Sentinel server was rebooted and the problem went away. To change the amount of memory allocated to DAS_RT, please open the configuration.xml file and search for the following:


Change the -Xmx256m to -Xmx1024m. NOTE: This change assumes that you have sufficient RAM in your system to handle this memory increase. If you do not have sufficient memory, you may consider increasing the amount of physical RAM in your Sentinel server, or move the Sentinel services to a server with more memoryresources. Alternately, you can reduce the number of workstations using SCC and also reduce the number of active views that you have enabled.