SQLSweet16!, Episode 8: How SQL Server 2016 Cumulative Update 2 (CU2) can improve performance of highly concurrent workloads

Sanjay Mishra, Arvind Shyamsundar Reviewed by: Dimitri Furman, Denzil Ribeiro, Mike Ruthruff, Mike Weiner, Ryan Stonecipher, Nitish Upreti, Panagiotis Antonopoulos, Mirek Sztajno Last year, in the SQLCAT lab we were working with an early adopter customer running pre-release SQL Server 2016 on Windows Server 2016 Tech Preview 4. The workload being used was the ASP.NET… Read more

SQLCAT at Microsoft Ignite 2016

Hi all, we are looking forward, as we are sure you are, to a great Microsoft Ignite 2016! Three members of the SQLCAT team will be in Atlanta (September 26th-30th) and of course we would love to see everyone and talk about SQL Server, Azure SQL DB, and SQL DW. We have 3 sessions where we… Read more

Determining Database Size in Azure SQL Database V12

A question that is frequently asked by customers using Azure SQL Database is “How can I determine the size of my database programmatically?” Interestingly, different people may be talking about different things when asking this question. Is it the size of all database files on disk? Is it the size of just the data files?… Read more

Using SQL Always Encrypted with Azure Web App Service

Reviewed by: Dimitri Furman, Jakub Szymaszek, Sanjay Mishra, Kun Cheng, Mike Ruthruff Background A common scenario today involves migrating a web application (based on IIS) and the on-premises SQL Server database to either Azure SQL DB or Azure SQL VM. One of the important thoughts in the mind of customers embarking on such projects is… Read more

Real-World Azure SQL DB: Unexpected Database Maximum Size Limit

Reviewed by: Kun Cheng, Sanjay Mishra, Denzil Ribeiro, Arvind Shyamsundar, Mike Weiner, and Murshed Zaman The Problem: A Production Outage A customer using Azure SQL Database recently brought an interesting problem to our attention. Unexpectedly, their production workload started failing with the following error message: “The database ‘ProdDb’ has reached its size quota. Partition or… Read more

Connect to Azure SQL Database V12 via Redirection

Reviewed by: Vince Curley, Saurabh Singh, Joe Ponce-Galindo, Murugan Ayyappan, Dimitri Furman, Denzil Ribeiro, Arvind Shyamsundar, Murshed Zaman, Sanjay Mishra, Mike Weiner Introduction In the old days of Azure SQL Database (prior to V12), SQL Database used what is called a gateway to proxy all connections and communications between clients and user databases. With V12,… Read more

SQLSweet16!, Episode 7: Install Option for Instant File Initialization

Reviewed by: Dimitri Furman, Kun Cheng, Denzil Ribeiro Database Instant File Initialization helps improve performance of certain file operations. Prior to SQL Server 2016, enabling instant file operation has been cumbersome (editing the Local Security Policy to add the SQL Server service account to the Perform Volume Maintenance Tasks policy, followed by restarting SQL Server… Read more

Migrating data to Azure SQL Data Warehouse in practice

Authors: Rangarajan Srirangam, Mandar Inamdar Contributors and Reviewers: John Hoang, Sanjay Mishra, Alexei Khalyako, Sourabh Agarwal, Osamu Hirayama, Shiyang Qiu Overview: Migrate data to Azure SQL Data Warehouse Azure SQL Data Warehouse is an enterprise-class, distributed database, capable of processing massive volumes of relational and non-relational data. It can deploy, grow, shrink, and pause in seconds. As… Read more

SQLSweet16!, Episode 6: DBCC CHECKDB with MAXDOP

Reviewed By: Dimitri Furman DBCC CHECKDB is a common database maintenance task. It can take up significant amount of system resources, and can impact the performance of the production workload. There are some very good articles on the web on optimizing performance of DBCC CHECKDB and minimizing performance impact. SQL Server 2016 (and now backported… Read more

SQLSweet16!, Episode 5: TRUNCATE Selected Partitions

Reviewed By: Denzil Ribeiro, Kun Cheng Deleting all rows from a given partition is a very common operation on a partitioned table, especially in a sliding window scenario. In a sliding window scenario, when a new period starts, a new partition is created for the new data corresponding to this period, and the oldest partition… Read more