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Mereboer1490
Oct 19, 2022Copper Contributor
SCOM Clients in not monitored state, and error 29181on management servers
We have the following problem in our production SCOM environment. Since last night a few SCOM clients have the "not monitored" state. Restarting the clients doesn't solve the probem.
Also The System Center Management Configuration Service is in warning state (yellow), further investigation in the eventviewer gave me the following error.
OpsMgr Management Configuration Service failed to execute 'SnapshotSynchronization' engine work item due to the following exception
Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.DataAccessException: Data access operation failed
at Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.DataAccessOperation.ExecuteSynchronously(Int32 timeoutSeconds, WaitHandle stopWaitHandle)
at Microsoft.EnterpriseManagement.ManagementConfiguration.CmdbOperations.CmdbDataProvider.GetConfigurationSnapshotNextBatch(SnapshotProcessWatermark watermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.TracingConfigurationDataProvider.GetConfigurationSnapshotNextBatch(SnapshotProcessWatermark watermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.SnapshotSynchronizationWorkItem.TransferData(SnapshotProcessWatermark initialWatermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.SnapshotSynchronizationWorkItem.ExecuteSharedWorkItem()
at Microsoft.EnterpriseManagement.ManagementConfiguration.Interop.SharedWorkItem.ExecuteWorkItem()
at Microsoft.EnterpriseManagement.ManagementConfiguration.Interop.ConfigServiceEngineWorkItem.Execute()
-----------------------------------
System.InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'.
at Microsoft.EnterpriseManagement.ManagementConfiguration.CmdbOperations.ManagedEntitySnapshotReadOperation.ReadData(SqlDataReader reader)
at Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.ReaderSqlCommandOperation.SqlCommandCompleted(IAsyncResult asyncResult)
Any idea what's going on?
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