I have a set of reports that run against the cube. The cube has proactive caching enabled. If the datasource within the SSAS database has invalid credentials, queries against the cube will not run. Note: SSAS is setup to run as network service rather than a domain account (temporary situation).
My understanding of MOLAP is that the data is stored within the cube an no access to the source (sql server datamart) is needed for the user to run queries against the cube. Now this is proving to not be true... leaving me feeling like I don't know what is going on at all. After 7 years using SSAS I'm finding out that the user's queries don't actually run against the cube, they require that ssas be able to connect to its source data to satisfy the query???!?!?!??!?
I really really don't understand this, but I have tested repeatedly and when I set the datasource to invalid credentials, report queries won't run or just return 0's. Earlier we were getting 08001 "can't connect to server" messages, now I'm just getting all 0's on the reports when the datasource credentials are invalid.
Just to make this 100% clear, I am talking about the SSAS datasource within the SSAS database, not the SSRS datasource that points to the cube. Has anyone ever seen this before? To make it more confusing, now it seems to be working in excel regardless but SSRS still needs the valid datasource.
Thanks,
Ken