Hi all,

In our SolarWinds Database, I notice that the space of the table "NetFlowFastBitStringHeap" is more than 13GB, why other tables are no more than 800MB. Can someone tell me what the "NetFlowFastBitStringHeap"  is used for and can we reduce/truncate it? Is its size normal or abnormal?

Top 10 Tables by Size

Name	Size	% Size Used By Index	Total Row Count
NetFlowFastBitStringHeap	13.38 GB	46.9 %	150.63 M
InterfaceTraffic_Hourly_20160228	827.38 MB	24.2 %	5.00 M
AlertHistory	583.04 MB	14.2 %	1.49 M
Events	511.84 MB	20.7 %	1.23 M
APM_PortEvidence_Detail	449.24 MB	8.3 %	2.00 M
InterfaceTraffic_Daily_20160228	373.43 MB	25.9 %	2.42 M
InterfaceErrors_Hourly_20160228	337.53 MB	21.5 %	4.95 M
AlertLog	329.22 MB	7.4 %	1.31 M
InterfaceTraffic_Detail_20160305	274.63 MB	20.8 %	1.43 M
InterfaceTraffic_Detail_20160304	269.89 MB	21.7 %	1.46 M

Thanks,