Alarm console stuck at retrieving data until EMS probe is recycled

Document ID : KB000120709
Last Modified Date : 13/11/2018
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The portals alarm console will stop updating alarms. In the portal log we see the following error: 
22 Aug 2018 12:24:05,879 ERROR [DataFactoryException:107] (1) error, There are no alarm services available! 

It seems like the EMS probe stops working after some time. If the EMS probe is restarted the portal will show data again. 

The EMS logs shows some errors: 

Aug 24 12:24:29:350 [attach_socket, ems] (3) invalid argument, corrupt PDS: can't read index 8687 from a byte buffer of length 3000 
at com.nimsoft.nimbus.PDS.checkBounds( 


Aug 24 12:24:05:625 [MmpConnectionMaintenanceTimer, ems] (2) communication error, I/O error on nim session (C) com.nimsoft.nimbus.NimNamedClientSession(Socket[addr=/,port=48039,localport=37306]): Read timed out 
at com.nimsoft.nimbus.NimSessionBase.recv( 

The last error seems to be caused because the maintenance probe connection issues.
EMS: 10.17 
HUB: 7.93 
Controller: 7.93 
NAS: 9.00HF3 
WASP: 8.51 
Contact support for hot fix ems-10.1.8-HF2