The default limit set at BI server lebel for time out is 500 sec. How ever we can override this time out limit setting for individual reports at the data model level:
Solution steps:
Navigation >> Tools >> Reports & Analytics >> Btowse Catalog >> Open the data model from BI catalog >> Click on Properties tab:
Set the Query Time out to 14400 (4 hrs) - it will crease the time out for this specific report only.
Also we can enable SQL Pruning to "On" - SQL pruning enhances performances by fetching only the columns that are used in the report layout/template. Columns that are defined in the query but are not used in the report , are not fetched.
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