Dimension processing error

  • Hi,

    I'm trying to change the source of one of the dimensions in a small cube.

    This particular dimension will henceforth be managed by MDS so I'm trying to update the named query to point at MDS views.

    The problem is once I manke the change the dimension will no longer process.

    The first error is a failure to log on. Which is odd since I can explore the data

    2 further errors reference specific attributes.

    I'm afraid I'm offsite at the moment so I don't have access to the exact messages.

    One thing I want to check in the morning is that the attribute data types are correct, but I would have expected the error to mention truncation. And it wouldn't necessarily explain the logon failure message.

    Anyone got suggestions on specific things I can check?

    TIA

  • The actual errors are:

    "The following system error occurred: Logon failure: unknown username or bad password."

    "Errors in the high-level relational engine. A connection could not be made with the DateSourceID of 'new source' Name of 'new source'"

    "Errors in the OLAP storage engine: An error occurred while the dimension, with the ID of 'Dim Project', Name of 'Project' was being processed."

    "Errors in the OLAP storage engine: An error occurred while the 'Top Level' attribute of the 'Project' dimension from the 'ssas database' database was being processed."

    "Internal error: The operation terminated unsuccessfully."

    "Server: The operation has been cancelled."

    This is what I get after I've forced the new data types to match the old ones. I've done this as casting in the named query after writing rules in MDS.

    Any thoughts?

  • Ok,

    After deleting the old NQ and saving, then adding back the NQ and saving.

    The view was missing from the dimension. I had to add it again and redo the mappings of key columns and name columns (remapping may not have been needed).

    Then I went back to the Data Source for the new source and saw the password was blank (it wasn't previously! it seems to ask me each time I open up this project.) After addint the password back in again and hitting 'Test' I got an error.

    This is new and might be the source of my problem. It says:

    "The ImpersonationInfo for datasource 'new source' contains an ImpersonationMode that can only be used by a server administrator."

    Judging by this article (http://blogs.msdn.com/b/john_daskalakis/archive/2009/12/16/9937631.aspx)

    my permissions might have changed 🙁

  • Turns out i'm still a local admin so therefore I'm still a SSAS server admin.

    I believe the issue is that I didn't pay proper attention and set the impersonation option incorrectly when creating the new data source.

    Should have been service account.

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