Author: Alexei Khalyako Reviewers: Thomas Kejser, Marcel Franke (PM One); Kevin Cox; Erik Kraemer; Kun Cheng; Murshed Zaman; Chuck Heinzelman ...

When using ApplicationIntent=ReadOnly to access a readable secondary via the Availability Group Listener, the login SIDs have to be the same between primary and secondary. The connection attempt generates an error saying the login does not exist. This...

Written by : Ed Katibah, Milan Stojic, Michael Rys, Nicholas Dritsas Technical reviewers : Chuck Heinzelman Introduction : Spatial Point Data queries require particular tuning efforts to enhance performance and improve overall application throughput...

Several customers are already running SQL Server 2012 AlwaysOn in production. You can find the case studies with some of these reference customers here...

Author : Sanjay Mishra Contributors : David P Smith (ServiceU) Reviewers : Chuck Heinzelman, Mike Weiner, Prem Mehra, Kevin Cox, Jimmy May, Tim Wieman...

Author : Sanjay Mishra Contributors : David P Smith (ServiceU) Reviewers : Chuck Heinzelman, Mike Weiner, Prem Mehra, Kevin Cox, Jimmy May, Min He ...

The Technical Reference Guides for Designing Mission-Critical Solutions provide planning and architecture guidance for various mission-critical workloads deployed by users. These guides
reflect the knowledge gained by the CAT team while working with customers on mission-critical deployments, many of these deployments being the result of deep customer engagements by the CAT organization.

...

SQL Server 2012 AlwaysOn provides flexible design choices for selecting an appropriate high availability and disaster recovery solution for your application. This blog highlights the salient features of each of the design patterns.

...

We are proud to announce that the community technology preview (CTP) of Apache TM Hadoop TM -based Services for Windows Azure (or Hadoop on Azure) is now available. As noted in on the SQL Server Data Platform Insider blog, the CTP is by invite only http...

Author: Kun Cheng Reviewers: Shaun Tinline-Jones, Silvano Coriani, Steve Howard, Thomas Kejser, Sanjay Mishra A computed column is computed from an expression that can use other columns in the same table. The expression can be a noncomputed column...

Author: Thomas Kejser Contributors/Reviewers: Alexei Khalyako, Jerome Halmans, Fabricio Voznika, Sedat Yogurtcuoglu, Mike Ruthruff, Tobias Ternstrom and Steve Howard In this blog, I will explore ideas for extending SQL Server with new, fast hash functions...

As announced during the PASS Summit 2011 Day One Keynote , we are diving deeper into the world of Big Data by embracing and contributing to the open source community and Hadoop. We’ve had a lot of good coverage on this topic with some examples...

Author : Shaun Tinline-Jones Reviewers : Mike Ruthruff, Sanjay Mishra, Alexei Khalyako Not too long ago an ISV that developed solutions using SQL Server as the RDBMS, asked me how they could query a database as at a point in time. This was a relatively...

Want deep technical dives on all things SQL Server and SQL Azure?  Then check out the SQLCAT track at this year's SQLPASS 2011 Summit in Seattle.  We will be diving into technical issues surrounding OLTP, Data Warehousing, BI, Azure and everything in between.  In addition to the tracks, do not forget about the "SQL Clinic" and you can find SQLCAT members through out SQLPASS in our green shirts (and/or doctors lab coats).

...

Author: Alexei Khalyako Reviewers: Stuart Ozer, Thomas Kejser, Eric Kraemer, Kevin Cox, Mike Ruthruff Technical Editor: Beth Inghram Make sure...

Author : Kun Cheng Reviewers : Thomas Kejser, Curt Peterson, James Podgorski, Christian Martinez, Mike Ruthruff Receive-Side Scaling (RSS) was introduced in Windows 2003 to improve Windows scalability to handle heavy network traffic, which is typically...

Author : Shaun Tinline-Jones Technical Reviewers : Thomas Kejser, Steve Howard, Jaime Alva Bravo, Kun Cheng, Jimmy May Note: Validation for this...

As noted in our blog post Announcing SSAS Maestros v1.2 , we had a great Analysis Services Level 500 deep dive sessions in Redmond and Madrid back in June/July 2011. Saying this, we do have some quick updates on the SSAS Maestros current status: ...

Author: Chuck Heinzelman Reviewers: Kevin Cox, Dan Jones, Lara Rubbelke During a customer engagement, we noticed a query that was taking a long time to execute. We saw that the query had a scalar-valued User Defined Function (UDF) encapsulating...

Recently, a problem was presented to me by a DBA using SQL Server 2008 R2. He could not attach a database whose files had been copied from another server. This blog talks about the situation and the solution. Here are the steps he went through to arrive...

Author: Chuck Heinzelman Reviewers: Kevin Cox, Kun Cheng, Michael Thomassy In a recent customer engagement, I was presented with a problem that I have seen in the past and am surprised that I don’t see more often. Take the following table...

Author: Alexei Khalyako Technical Reviewers: Murshed Zaman; Prem Mehra Editor : Beth Inghram Background Recently a customer approached...

We are proud to announce that SQLCAT will continue with the SSAS Maestros course in June and July in Redmond and Madrid. SSAS Maestros 1.2 Courses Join us for a five-day deep-dive course on Analysis Services 2008 R2 UDM and join the SSAS Maestro...

Exciting news as earlier this week the SQL Server Product Group announced the release of SQL Server Migration Assistant (SSMA) v5.0! A product with the goal of further simplifying the user experience in automating the migration of Oracle, Sybase, MySQL...

Author : Shaun Tinline-Jones Reviewers: Lubor Kollar; Conor Cunningham; Steve Howard; Kun Cheng; James Podgorski; Jimmy May; Joseph Sack; Welly Lee; Neeraj Joshi; Keith Bauer Introduction We recently assisted a global ISV to address a performance...