Help With Usage Based Optimation Wizard - AdventureWorksDW2008

  • Hi All,

    Tried to find solution on Google and here as well but to no avail.

    I am working on Exam 70_448 materials. Chanpter 8, Lesson 3, Exercise 2 - Usage Based Optimization. I have created aggregations on Internet Sales using the Design wizard, pretty simple in previous lesson. However when I delete and recreate partitions based on year, I was able to use the wizard to run Design Aggregations and it appears to create aggregations but not many, only 4 (35% performance selection). I am not sure this is correct.

    I have set up logging via the property value by right clicking on SSMS Analysis Services db (70448_Exam) and set up logging by setting all the Log \ ... \ values. Then running some queries against the cube AdventureWorksDW2008. I go to the db and look at the table and it is populated with what appears to be valid values.

    Here's my issue(s):

    Whenever I run the Usage Based Optimization wizard, select all partitions (InternetSales2001/2002/2003/2004), no query criteria, uncheck No Specific attributes, then I come to Specify Object Counts. I click count and it gives an EstimatedCount of 60398 and PartitionCount of same.

    But, I get the triangle yellow warning box with exclamation point in dialog box with message of "Estimated Count or Partition Count must be specified for cube objects that require counting.

    I have deleted and recreated and processed the partitions several times.

    I have been doing my best to just follow the book and do what it says.

    So, what am I doing wrong. This does not appear to be that difficult in theory but I feel like a dunce.

    Thanks in advance.

    JJ

  • BTW, I cleared all the EstimatedCounts and PartitionCounts as they are not recomputed if they exist. I have also tried deleting the Aggregations and redoing.

    As an aside, I was able to easily create Usage Based Optimization(s) on the ResellerSales measure. However, it differs in that it only has one partition (all the data).

    Thanks in advance.

  • Hi

    Did you manage to find out what causes this error, I also got it...

    Preparing for the exam in 2 weeks time :-). :hehe:

  • Oh Look at this, i just found a solution on this post:

    http://sqlblog.com/blogs/greg_low/archive/2011/07/06/analysis-services-usage-based-optimization-unhelpful-ui.aspx

    😀

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