問題文
Extract refreshes for one data source fail on a four-node cluster, and the error mentions that the connection could not be made. Refreshes of other data sources succeed. What is the first thing to check?
選択肢
- Whether the database driver for that source is present on every node that runs the process which performs refreshes.
- Whether the required driver for that source is present on the machine of the author who first published that data source.
- Whether the schedule for that data source overlaps with the schedules of all the other data sources.
- Whether the owner of that data source still holds a license on the site at the moment.