Tech Tip:  SOI - Spectrum Alarm Synchronization

Document created by Britta_Hoffner Employee on Feb 24, 2015Last modified by MelissaPotvin on Feb 24, 2015
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This Tech Tip is related to all SOI and Spectrum Releases that are supported by the  Spectrum Connector for SOI and higher.


When a SpectroServer has a very high volume of Alarms, aka Alarm Storm, over a short period of time it can happen that Alarm Clear events are not

received in SOI. So Alarms that are cleared in Spectrum already are still in the SOI Console.


Looking into the SpectrumIM Connector logfile one can see the “Alarm { NEW” message  but no “Alarm { Delete ” message.


This situation can happen when the SpectroServer runs into a problem to update its Corba Clients.




Following configuration for the Spectrum Corba Client Notifications Cache can be applied. The values of the parameters can be adjusted as needed.


In $SPECROOT/SS/.vnmrc are the following default  settings for the CORBA-layer (orb_/request timeout und queue settings:






In case of a massive Alarm Workload this settings can be increase as the following suggestion:






the "max_pending_corba_client_notification" queue would be 5 time bigger and the timeout increased to 90 seconds and the Alarm new, update, delete will be aged (removed from the corba client cache) after 90000ms/90sec.