Automatic Data Refresh behavior on SSAS Tabular model

Question

Hello&nbsp;We have&nbsp;PBIX connected to SSAS Tabular model as Live Connection. &nbsp;We have been observing that all dashboard queries are running in the background for each user who have access to the dashboard while the automatic data refresh is going on.For example, we gave access to 100 users on the Model, Gateway and Workspace and all of these users are&nbsp;showing that they are running queries (though they are not accessing the dashboard during that time) and we found this in SQL Tracer and wanted to understand this. &nbsp;Is this an expecting behavior? &nbsp;Did any one experiencing this issue? &nbsp;Any performance degradation because of this behavior? &nbsp;If possible, can any one share the documentation about the data refresh which runs automatically for Live connection. &nbsp;I tried but could not get any.&nbsp;Thanks in advance,Ravi

anonymous · Answer

Hi&nbsp;tagoreb,  Do you share the dashboard to user via the following option or add your users in Power BI Group?  From my point of view, this is an expected behavior that all users you share dashboard with are running queries , because Power BI needs to refresh data for each user when there are changes in the dataset. Please help to describe more details about how you share the dashboard and I will test your scenario in my computer.  Besides, I am afraid that there are no official documentations about Automatic data refresh behavior on live connection.   Thanks, Lydia Zhang

tagoreb · Answer

Hi Lydia&nbsp;Thank you for your time.We add users as members to the workspace to give access to the dashboard and reports.&nbsp;&nbsp;&nbsp;Thanks and Regards,Ravi

anonymous · Answer

Hi&nbsp;tagoreb,  I am trying to test the scenario as yours, however, I get a different result on my side, please check the details in the following screenshot. &nbsp;I added three users in Power BI group. Could you please share me the result of your SQL trace?       Thanks, Lydia Zhang

tagoreb · Answer

Hi Lydia&nbsp;Please check the Query Begin Text Data and you will get the &lt;effective user name&gt; tag and you can see those queries triggered for those 3 users you added. &nbsp;&nbsp;Our expectation is that those queries should get triggered/seen only when the user login to PBI service and when try to access the dashboard. &nbsp;However, with out user's interaction, while automatic data refresh is processing, we are seeing the query entries in Trace.&nbsp;We have 100+ users added as members and hence you can see more Query Begin and End entries in the Trace. &nbsp;Please find the below screen shot as requested.&nbsp;

anonymous · Answer

Hi&nbsp;tagoreb,I have checked&nbsp;&lt;effective user name&gt; tag in each Query Begin Text Data. However, I am not able to reproduce your issue. In my SQL trace, those DAX queries get triggered only when the group members login to PBI service and access the dashboard. Also during the automatic data refresh process, the&nbsp;&lt;effective user name&gt; &nbsp;is always me if the three group members don't access the shared dashabord and report.How do you grant the group members access to gateway in Power BI Service? Do you embed the report in other application?  Thanks, Lydia Zhang

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Automatic Data Refresh behavior on SSAS Tabular model

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