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Error handling SSAS cube about column binding

This is the error message that I receive after processing the SSIS cube

Errors in the back-end database access module. The size specified for a binding was too small, resulting in one or more column values being truncated.

However, this does not give me any indication of which column binding is too small.

How do I debug this?

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10 answers
  • Open the SSAS database using SQL Server data tools.
  • Open the SSAS database data source view.
  • Right-click the blank space and click Refresh
  • A window will open and show all the changes in the underlying data model.

Documentation

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This error message went crazy for several hours. I already found which column increased its length and updated the data table in the source, which now showed the correct length. But the error continued to appear. It turns out that this field was used in linking the fact to the size on the "Use Dimension" tab of the cube. And when you update the source, the binding created for this link is not updated. The fix is ​​to delete (change the relationship type to "No relationship") and recreate this link.

Update . Since this answer still matters, I thought I'd add a screenshot showing the area where you might run into this problem. If for some reason you are using a string for Dimension-to-Fact relationships, this may depend on the increased size. And the solution is described above. This is in addition to the problem with the Key, Name, and Value columns in the Dimension attribute. Measurement Usage Screen

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ESC is correct. Install the BIDS assistant from CodePlex. Right-click the Dimensions folder and run a data inconsistency check.

Measurement Type Mismatch

This fixed my problem.

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Alternate Fix # 1 - SQL Server 2008 R2 (did not try in 2012, but suppose this works).

  • Update / Update DSV. Pay attention to all the modified columns so that you can view.
  • Open each dimension that uses the modified columns. Find the associated attribute and expand the KeyColumns , NameColumn, and ValueColumn properties .
  • Review the DataSize properties for each, and if they do not match the value from the DSV, edit accordingly. Property Sheet

Alternative fix # 2

  • Open the damaged * .dim file and find the name / binding of your column.
  • Change the Data Size element: <DataSize>100</DataSize>

As Esc noted, column size updates can affect the use of Dimension in the cube itself. You can either do as Esc suggests, or edit the * .cube file directly - search for the updated attribute and its associated Data Size element: <DataSize>100</DataSize>

I tried both fixes when the column size changed and both of them work.

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In my specific case, the problem was that my query was read from Oracle, and the hard-coded column had finite space (my mistake).

I deleted the trailing space and, for good measure, passed a solid value to CAST ('MasterSystem' as VarChar2(100)) as SOURCE

This solved my specific problem.

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In my case, the problem worked on a cube on a real server. If you are working with the cube live by connecting to the server, this error message will appear. But when you work on the cube as a solution stored on the computer, you will not receive an error message. Therefore, work on the cube locally and deploy after making changes.

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By doing the same problem, a response from Esc could also be a solution. The reason is much more "hidden", and the more obvious "Update" and "Data type mismatch" solutions do not help in my case.

I did not find a suitable way to "debug" this problem.

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I ran into this problem. The issue is resolved by removing the leading and trailing spaces and the rtrim and ltrim functions .

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I ran into the same problem, but updating the data source failed. I had a materialized reference dimension for the factual section, which gave me an error. In my DEV environment, I unchecked Materialize and processed the section without error.
Oddly enough, now I can turn on materialization for the same relationship, and it will still be processed without problems.

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A simple thing to try first - I have done this several times over the years.

  • Go to the data source view and refresh it (it may not look like something is happening, but it's good practice).
  • Resize. Remove the problem attribute, and then drag it again from the data source view list.
  • Re-complete the process.

As others noted, data with trailing spaces may also be the cause. Check them out: SELECT col FROM tbl WHERE col LIKE '% '

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