Denodo offers a built-in monitoring tool called [**Denodo Monitor**](https://community.denodo.com/docs/html/browse/8.0/vdp/administration/monitoring_the_virtual_dataport_server/denodo_monitor/denodo_monitor) for monitoring and auditing purposes which can be found in the “<DENODO_HOME>\tools\monitor” directory. On [**launching**](https://community.denodo.com/docs/html/browse/8.0/vdp/administration/monitoring_the_virtual_dataport_server/denodo_monitor/launching_the_denodo_monitor) the Denodo Monitor, all the activities of the server will be monitored and stored as log files.
If you want to identify the user actions, you could check the **vdp-queries.log** file under the "<DENODO_HOME>\tools\monitor\denodo-monitor\logs" directory which will show the queries ran (Query column) along with the user (UserName column) who ran these queries .
You can take a look at the [**Log column details**](https://community.denodo.com/kb/view/document/Log%20column%20details?category=Operation) and [**Auditing User Access in Virtual DataPort**](https://community.denodo.com/kb/view/document/Auditing%20User%20Access%20in%20Virtual%20DataPort?category=Security) Knowledge Base Articles for more information.
Hope this helps!