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Executing DBCC for SQL Server Analysis Services 2016

In the upcoming release of SQL Server Analysis Services 2016, one of the new features you’ll see is the ability to perform a database consistency check against your SSAS cubes and Tabular models. Just like in the database engine side of things, DBCC for SSAS checks for corruption across the entire database or individual objects within the database.

The DBCC command is shaped likes the XMLA Process command so there’s not a lot of complexity to it. Below here, you can see the basic syntax for the SSAS DBCC command. Its worthing noting that the syntax of the command will look the same whether you’re running it against an SSAS multidimensional database or Tabular model.

"http://schemas.microsoft.com/analysisservices/2003/engine">
    <Object>
        
        
        
        
    Object>

To run the DBCC command, just open a new MDX query window and use the code seen above. Enter in the IDs of your Database, cube, measure and/or partition.

When you’re running the DBCC command against a Tabular model, there are a couple things I’d like to point out.

In the element for the CubeID, you’ll need to specify the ID of the Model. And in the element for the MeasureGroupID, specify the ID for the table you want to check.

DBCC XMLA command for SSAS

If you want to check the whole database or model for consistency, simply remove the elements the lower elements. For example, if I wanted to check the whole model, I just would leave out the elements for MeasureGroupID and PartitionID.

To find the MeasureGroupID (Table ID) or PartitionID in a Tabular model, just navigate to the Properties for that object.

Find the SSAS Tabular MeasureGroup ID or Table ID

To find the Partition ID in a Tabular model, right click the table and select Partitions. Then highlight the partition you want to check and click the Settings icon.

Find the SSAS Tabular partition ID

If you run SQL Server Profiler against SSAS while executing the DBCC command, you can see the individual checking of the columns, tables, database and more.

SSAS Tabular Profiler trace DBCC

I also ran a trace against my SSAS 2016 OLAP instance to watch each segment of

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Find Recently Run Queries

  • 2 November 2011
  • Author: BradSchacht
  • Number of views: 2518
  • 0 Comments

If you have ever closed a query window by accident only to wish you could get back your work an instant later you may be in luck.  If you ran the query in question there is hope for you.  The query below will return queries that have been run for you including the time and query text.  I haven’t figured up a way to get the user that executed the query just yet.  So if you have that tidbit to add to this so you can filter a little easier please let us know.

You can narrow the list by adding a where clause and searching for some text you know was in the query or looking around a specific time period.  The text wont be formatted pretty when you copy it, but reformatting is better than rewriting!

Without further ado, here is the magic:

SELECT
a.last_execution_time AS ExectuionTime,
b.text AS Query
FROM sys.dm_exec_query_stats a
CROSS APPLY sys.dm_exec_sql_text(a.sql_handle) b
ORDER BY a.last_execution_time DESC







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BradSchacht

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