Hi @Anonymous ,
As stated in this blog, refreshing the dataset will give an error message indicating you that your dataset is too large when data model size grows beyond 1 GB.(yours is around 1.2GB)
I would recommend you
1. Make sure your on-premise gateway is the lateset version.
2.Use Power BI Desktop to check the refresh duration.If it takes more than 2 hours, consider moving your dataset to Power BI Premium. Your dataset might not be refreshable on shared capacity. Also consider using Incremental refresh for datasets that are larger than 1GB or take several hours to refresh.
3. Set the Time out parameter on the connection. Try setting this to something larger than 3600, like 7200 for 2 hours or even 36000 for 10 hours. Default number if you put nothing = 10min
4. Break up your dataset into smaller datasets and refresh them in Power BI Service .
Refer to:
https://docs.microsoft.com/en-us/power-bi/connect-data/refresh-data#best-practices
https://docs.microsoft.com/en-us/power-bi/connect-data/refresh-troubleshooting-refresh-scenarios
https://community.powerbi.com/t5/Service/Timeout-value-in-powerbi-service/m-p/1570341
https://community.powerbi.com/t5/Service/data-refresh-timeout-works-sometimes-fails-others/m-p/1020774
Best Regards,
Eyelyn Qin
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