Author Archive

Microsoft TecheEd India 2013: Come and join our session

March 18, 2013 Leave a comment


Teched Bangalore 2013

Look for the SQL Developer track. If you are at TechEd, do join.

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Microsoft BI Authentication and Identity Delegation

March 11, 2013 Leave a comment


From straightforward client/server designs to complex architectures relying on distributed Windows services, SharePoint applications, Web services, and data sources, Microsoft BI solutions can pose many challenges to seamless user authentication and end-to-end identity delegation. SQL Server technologies and data providers expect to use Windows authentication while SharePoint Server uses Web Services Security (WS-Security). Flowing a user identity from a Windows or browser-based BI client application through a claims-based SharePoint service to a Windows backend system is not always possible due to various limitations in data providers, security protocols, and identity services. Network, forest, and federation topologies also influence the authentication flows. Familiarity with the authentication protocols and capabilities, delegation limitations, and possible workarounds is an indispensable prerequisite to delivering a positive BI user experience across the entire Microsoft BI solution stack in enterprise environments.

To review the document, please download the Microsoft BI Authentication and Identity Delegation Word document.

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Connectivity Issue: "A connection cannot be made to redirector. Ensure that ‘SQL Browser’ service is running"

February 20, 2013 Leave a comment


SSAS Named Instance running on cluster with two nodes, on one instance we are able to connect SSAS using Name Instance but when you failover to other node and try to connect we get error message

SSAS Cluster Virtual Server Name – SSASVirtualServer

Instance is MySSAS

Two Nodes:



When NodeA is owner of SSASVirtualServer and we connect SSASVirtualServer\MySSAS it works but when we failover SSASVirtualServer to NodeB and try to connect  SSASVirtualServer\MySSAS it fails with error:

A connection cannot be made to redirector. Ensure that ‘SQL Browser’ service is running.




The startup of SQL Browser account does not have permission to access msmdredir.ini. The startup account of SQL Browser should have both Read and Write permission to the ASconfig folder or its child objects.
By default, the SQL Browser will periodically check and update the 90\Shared\ASConfig\msmdredir.ini file to ensure it knows the named instance SSAS info(port..etc) and it will translate client who needs to connect to the named instance SSAS to the correct name and port.


a. If the SQL Browser is running under "NT Authority \local service" account, ensure the account has permission (read/write) to the C:\Program Files (x86)\Microsoft SQL Server\90\Shared\ASConfig folder and its child objects. If the SQL Browser is run under other account, please ensure the same.

b. If you are not sure about permission change from Local Service to Local System and restart services.


Today, we have resolved issue of same nature – thanks Saman Alaghehband for his time and patience

Note: On Cluster Environment it is always recommended to connect using SSAS Virtual Server Name



SQL Server Analysis Services Port (SQL 2005 / 2008)

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DAX: Using filter and summarize in same Query

February 15, 2013 Leave a comment

In this SQL Query we are grouping Sales by Year and Color plus adding a filter of 5000

select CalendarYear,color,sum(SalesAmount) from [DimProduct] join FactInternetSales
on DimProduct.[ProductKey]=FactInternetSales.[ProductKey]
join DimDate
on dimdate.datekey=FactInternetSales.OrderDatekey
Group by CalendarYear,color
Having sum(salesamount)>5000
order by CalendarYear,color



Equivalent Dax of achieving same is:

evaluate( filter (summarize (‘Internet Sales’, ‘Date'[Calendar Year],
‘Product'[Color] ,"Sales Amount",sum(‘Internet Sales'[Sales Amount]))
,Calculate(sum(‘Internet Sales'[Sales Amount]))>5000))
order by ‘Date'[Calendar Year],


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PowerShell:How to List Database Roles and their Members

February 5, 2013 Leave a comment
   1:  [Reflection.Assembly]::LoadWithPartialName("Microsoft.AnalysisServices")
   2:  $ServerName = ".\sql2008r2"
   3:  $DB = "Adventure Works DW 2008"
   4:  $Server = New-Object Microsoft.AnalysisServices.Server
   5:  $Server.Connect($ServerName)
   6:  $SSASDatabase = $Server.Databases.Item($DB)

7: $SSASDatabase.Roles | Select Name, Members


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Hardware Sizing a Tabular Solution (SQL Server Analysis Services)

January 11, 2013 Leave a comment

Applies to: SQL Server 2012 Analysis Services, Tabular Solutions

Summary: Provides guidance for estimating the hardware requirements needed to support processing and query workloads for an Analysis Services tabular solution.

Download from here (Hardware Sizing a Tabular Solution (SQL Server Analysis Services) Word document.

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HDInsight on Windows: Building PowerPivot Report from Hive in a Few Easy Steps (PDF)

January 7, 2013 Leave a comment

Download Step by Step PDF from Slide Share

Categories: HDInsight, PowerPivot