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Using DQS with SQL Server AlwaysOn AG

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Hi everyone,

A couple of weeks ago I presented a session on cloud IT Pro Airlift: Infrastructure & Data Platform event in Portugal and did a demonstration about Enterprise Information Management (EIM) session using SQL Server 2012 AlwaysOn feature.

 

If you search for the text “Building an AlwaysOn HADR solution for DQS” , you will get a result for a post from Kumar Vivek @ https://blogs.msdn.com/b/kvivek/archive/2013/01/10/whitepaper-on-building-an-alwayson-hadr-solution-for-dqs-using-availability-groups.aspx.

This post contains a link for a whitepaper document that will provide you a step-by-step guide on how to configure SQL Server AlwaysOn HA Availability Groups (AG) for DQS databases.

I followed the instructions in the paper but after setting up my environment with three SQL Server servers I found a problem with multiple AG. If you pay a closer look at page 10, you will find that when a failover (manual/automatic) happens you will need to reconfigure access to DQS databases and need to run a couple of T-SQL commands that can be automated using a SQL Server Job. In page 11 you also find a script that can be automated using a SQL Server Agent Job and looks for the SQL Server instance
that is currently participating in the primary role AlwaysOn AG.

In my case I had two AG: one for MDS and another for DQS. Because of that I need to change the script to filter the DQS AG name:

With this simple trick you can now setup you SQL Server Agent Job and run it periodically in your AlwaysOn AG for DQS.

Please note that you can also find a similar whitepaper for MDS using AlwaysOn AG @ https://msdn.microsoft.com/en-us/library/jj884069.aspx.

Hope it helps,

Alexandre Mendeiros

 

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