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Updated January 17, 2017
After migrating the main NPM server to a new server, there is an error message or event stating that the Module Engine or Business Layer failed to start. The service may also restart every couple of minutes. This can cause Information Service (SWIS) errors after clicking the web page or cause the web page to be inaccessible for several minutes. You may also get the error message below in the
C:\ProgramData\Solarwinds\Logs\Orion\BusinessLayerHost.log. In the error message, you will see that the old NPM server is listed. In this case, NPM_Server instead of the new hostname of the current sever.
2017-01-16 09:47:32,639  ERROR SolarWinds.BusinessLayerHost.PluginInstanceAppDomain - Plugin "Core Business Layer" failed to start.
System.ServiceModel.FaultException`1[SolarWinds.InformationService.Contract2.InfoServiceFaultContract]: Create failed, check fault information.
Could not connect to net.tcp://NPM_Server:17777/SolarWinds/InformationService/v3/Orion/certificate. The connection attempt lasted for a time span of 00:00:21.0595950. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a...
All NPM versions
There are duplicate entries in the database.
Enginestable (for NPM 12 and later versions) or the
All Enginestable (for versions earlier than NPM 12.0).
Note: You may also need to move all your nodes to the new polling engine. If your nodes are on the old NPM server, then none of nodes will be polling statistics or current status. To find out what Engine ID your nodes are attached to, double click the
NodesData table and scroll over to
EngineID. If they are on the old
EngineID, copy and paste the following query into Database Manager, and then click Execute Query.
UPDATE [dbo].[NodesData] Set EngineID = [New EngineID] WHERE EngineID = [old_EngineID]