in my tableau server i've scheduled 5 tasks for incremental refresh of my 5 workbooks. The scheduler run every 15 min for incremental extraction. The workbooks is composed by 4/5 sheets each one, and only one connection to the mssql database.
I've discover that the last exporting time was executed 1 month ago. What can i do very? Whats happened? Please help me to discover the problem. Even if i play the schedule manually the data it again are not refreshed