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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA - Knowledgebase Articles > Flapping connection to NTA Flow Storage Database

Flapping connection to NTA Flow Storage Database

Updated March 7, 2018

Overview

The Netflow Collector Service and connection to the NTA Flow Storage Database is flapping, losing and restoring connection repeatedly.

NTA Events:

 8/14/2017 1:13 PM   Connection to NTA Flow Storage Database has been lost. NTA cannot save any flows now. 
 8/14/2017 1:14 PM   Connection to NTA Flow Storage Database has been restored. 

NTA.BusinessLayer.log

 2017-08-14 13:27:31,190 [95] ERROR SolarWinds.Orion.NetFlow.Service.Program - NetFlowService Disk free space information: Temp - [C:] - 32960266240 bytes free, DB - [C:] - 32960266240 bytes free
2017-08-14 13:27:31,190 [95] ERROR SolarWinds.Orion.Common.SWEventLogging - Unhandled exception - Disk free space information [Temp - [C:] - 32960266240 bytes free, DB - [C:] - 32960266240 bytes free] : The number of WaitHandles must be less than or equal to 64.

Environment

  • NTA 4.x

Cause 

NTA collector is configured with more than 64 collection ports. The limit of collection ports per collector is 64.

Resolution

Edit collection ports and limit the total number of ports to 64 or less.

 

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