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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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List Indexes For Database using TSQL

  • 13 October 2010
  • Author: briankmcdonald
  • Number of views: 33894
  • 0 Comments

A while ago, I showed you how to find out what indexes were on a table using the GUI. Today, I am going to show you a quick query to determine the indexes for ALL tables in a database. The results will also show you whether it is a CLUSTERED or NONCLUSTERED index. Script 1 below will return ALL indexes in the AdventureWorksDW2008R2 database (available on Codeplex). If you want to see what indexes are in your environment, just modify the USE statement at the top of the script. Figure 1 shows sample results of executing this query.

Script 1: List All Indexes

USE AdventureWorksDW2008R2

GO

 

SELECT

            so.name AS TableName

            , si.name AS IndexName

            , si.type_desc AS IndexType

FROM

            sys.indexes si

            JOIN sys.objects so ON si.[object_id] = so.[object_id]

WHERE

            so.type = 'U'    --Only get indexes for User Created Tables

            AND si.name IS NOT NULL

ORDER BY

            so.name, si.type 

Figure 1: Sample Results – All Tables

List All Indexes For Database

 

I hope that you have enjoyed this quick blog. If you did, please rate it! Also, if you don’t already, please be sure to follow me on twitter at @briankmcdonald. Also note that you can subscribe to an RSS feed of my blogs here.

 

Until next time, thank you for reading,

 

 

Brian K. McDonald, MCDBA, MCSD
Business Intelligence Consultant – Pragmatic Works

Email: bmcdonald@pragmaticworks.com | Blogs: SSRSGeek | SQLServerCentral | BIDN

Twitter: @briankmcdonald | LinkedIn: http://tinyurl.com/BrianKMcDonald

 

 

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