Submit a ticketCall us

Training ClassSign up for Network Performance Monitor (NPM) and Scalability instructor-led classes

Attend our instructor-led classes, provided by SolarWinds® Academy, to discuss the more advanced monitoring mechanisms available in NPM as well as how to tune your equipment to optimize its polling capabilities. NPM classes offered:
NPM Custom Monitoring and Polling
Orion Platform Scalability

Reserve your seat.

Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > JobEngineV2 won't stay running due to Out of Memory Errors

JobEngineV2 won't stay running due to Out of Memory Errors

Updated: November 11, 2018



This article briefly discusses one possible cause as to why the Solarwinds JobEngineV2 Service keeps crashing which results in unstable polling or missed events/alerts.


Extract from the C:\ProgramData\SolarWinds\JobEngine.v2\Logs\SolarWinds.JobEngineService_v2_13.log

2018-11-07 16:25:38,485 [47] FATAL SolarWinds.JobEngine.Diagnostics.Log4NetWcfTraceListener - (null)    
System.ServiceModel Critical: 131077 :
<TraceRecord xmlns="" Severity="Critical"><TraceIdentifier>UnhandledException</TraceIdentifier><Description>Unhandled exception</Description><AppDomain>SWJobEngineSvc2.exe</AppDomain><Exception><ExceptionType>System.OutOfMemoryException, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Exception of type 'System.OutOfMemoryException' was thrown.</Message><StackTrace>   at System.Xml.XmlBufferReader.GetCharBuffer(Int32 count)


Extract from  C:\ProgramData\SolarWinds\Logs\IPAM\IPAM.Businesslayer.log

**** 2018-11-07 14:59:19,135 [Main] ERROR SolarWinds.IPAM.Storage.Credentials.CredentialInitializer (null) - IPAM was unable to convert 'Arista' credential with id:'5365528f-6e2c-4154-b7a3-61a530957c54'; at Exception:System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.Convert.ToBase64String(Byte[] inArray, Int32 offset, Int32 length, Base64FormattingOptions options)
   at System.Convert.ToBase64String(Byte[] inArray)
   at System.Security.Cryptography.Xml.CipherData.GetXml(XmlDocument document)
   at System.Security.Cryptography.Xml.EncryptedData.GetXml(XmlDocument document)
   at System.Security.Cryptography.Xml.EncryptedXml.ReplaceElement(XmlElement inputElement, EncryptedData encryptedData, Boolean content)
   at SolarWinds.Orion.Security.CryptoHelper.EncryptXml(String plainText)
   at SolarWinds.Orion.Security.CryptoHelper.Encrypt(String plainText)
   at SolarWinds.IPAM.Storage.DAL.SNMPCredDAL.AddAllValues(SqlCommand command, SNMPCred cred, Boolean IncludeKey)
   at SolarWinds.IPAM.Storage.DAL.SNMPCredDAL.Update(SNMPCred cred)
   at SolarWinds.IPAM.Storage.Credentials.CredentialInitializer.UpdateSNMPCred(SNMPCred[] oldCredentials)


  • NPM 12.2+
  • IPAM 4.6+



  • Corrupted IPAM SNMP Credentials. 



  • As we can see from the second error above, the error is due to the 'Arista' credential in the IPAM_SNMPCred table in your Orion Database.
  • Delete the credential from the IPAM SNMP credentails (Settings > IPAM Settings > SNMP credentials).
  • Alternatively, you can delete the credential from the Orion Database by browsing to the IPAM_SNMPcred table using a database management tool and deleting the row.




Last modified


This page has no custom tags.