WSS_Logging database size

Question

We have a SharePoint 2016 environment. The WSS_Logging database has grown extensively and we wish to reduce size. When analysing the table usage report the clear culprit is a table called "dbo.MonitoredScopeDiagnosticsData_Partition". See screenshot below. The table in question has 42Gb just on its own.

We followed articles on how to tackle the WSS_Logging such as this one below but to no avail.

https://guidesharepoint.wordpress.com/2014/03/03/how-to-reduce-the-size-of-logging-database-and-how-to-purge-the-old-data-from-logging-database/

Our Questions

1. Which SPUsageDefinition setting (if any) is controlling the retention of the table in question?
2. Can contents of the MonitoredScopeDiagnosticsData_Partition table be safely truncated?

Thank you

AP81

Answer 1

1.This table stores diagnostics data. It can be configured by using Central Administration or PowerShell.

(1)Central Administration -> Monitoring -> Configure diagnostic logging -> In the Number of days to store log files box, type the number of days (1-366) that you want logs to be kept. After this time, logs will automatically be deleted.

(2)Use Set-SPDiagnosticConfig.

2.Diagnostic logs contain important data. Therefore, back up the logs regularly to ensure that this data is preserved.

References:

https://learn.microsoft.com/en-us/sharepoint/administration/configure-diagnostic-logging

https://learn.microsoft.com/en-us/powershell/module/sharepoint-server/Set-SPDiagnosticConfig?view=sharepoint-ps&preserve-view=true

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