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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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Access Denied During Database Backup

  • 27 August 2011
  • Author: ShawnHarrison
  • Number of views: 64679
  • 0 Comments

During the second day of our most recent Pragmatic Foundation class, Sherri realized that there was a problem with the student PC’s. When they tried to back up databases to the C: drive, they received an error message stating access denied. All students had local admin rights, but it turns out that the permissions of the user account do not matter in this situation.

Access denied message

When trying to back up a database to your hard drive, the SQL Server service needs access to the file system. By default, users can back up to C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Backup. If you have the need to back up to a different location, then you have to make a small change in the service settings. 

From the start menu, under Microsoft SQL Server 2008 > Configuration Tools, click on SQL Server Configuration Manager. 

List of Services

 

Right click on SQL Server and click ‘Properties’.

 

Properties

 

On the ‘Log On’ tab, you have the option of changing the account that is used by SQL Server. In the ‘Built in Account’ drop down, select the Local Service account and save. You should now be able to back up to other locations other than the default.

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