I believe the logging would occur in Tableau Server logs under the httpd folder.
More information on log locations here: Server Log File Locations
Another option would be to review the connection logs by reviewing the Workgroups Databases password_tokens: Workgroups Database
To collect the data from the Tableau Server some additional steps may need to be taken that are detailed in the Tableau Server help guide below.
Let me know if you need anything clarified.
I hope this helps!
Thanks. I was afraid that would be the case. Not good enough. Tableau needs to pay a little more attention to logging.
I am not going to claim to be an expert in Tableau Server logs by any means either. I might wait to see if someone else in the Tableau Community has some information or possibly reach out to Technical Support.