SQL Server Articles


Categories : Performance | Audit | Business Intelligence | Clustering | Developer | Reporting | Windows Server | SQL Azure | Powershell | ASP.NET | Other .NET

SQL Server 2014 – Delayed Transaction Durability

Prior to SQL Server 2014, SQL Server used a Write Ahead Log (WAL) mechanism which means that changes are written to the transaction log before they are committed.  The major advantage with this mechanism is that there will be no data loss . However, since IO is the slowest component, there will be a high […]

SQL Server 2014 Performance Tuning – Columnstore Indexes

SQL Server 2014 updatable in-memory columnstore (abbreviated to xVelocity where appropriate) index is another compelling performance-related feature of SQL Server 2014. Columnstore indexes enable you to deliver predictable performance for large data volumes. Columnstore indexes were first introduced with SQL Server 2012, to significantly improve performance of data warehouse workloads. For certain data warehousing analytical […]

SQL Server 2014 Performance – Resource Governor Enhancements and Buffer Pool Extension

In this second of the three part article series, we will first take a look at Resource Governor Enhancements for Physical IO.  Finally, we will talk about buffer pool extension feature. Resource Governor Enhancements for Physical IO control Resource Governor allows us to manage our workloads. This feature was first introduced with SQL Server 2008. […]

Four Key New Performance Features SQL Server 2014 – Part 1

The latest release of SQL Server 2014 has several new performance-related features as well as significant enhancements to the existing performance features. With these new performance-related enhancements of SQL Server 2014 we can significantly improve the performance of high transactional OLTP applications. In this first of the three part article series, we will take a […]

Improved Online Operations in SQL Server 2014

Online indexing rebuilding was a major breakthrough from SQL Server to support users re-indexing while the clustered index (or table) and other indexes are available during the index rebuild operation.   However, in real world there are multiple issues with these online operations as it does not have much flexibility. In SQL Server 2014, there are […]

Viewing Execution Plans While Queries are Running

Analyzing execution plans is a key tool when analyzing query performance. As most of you are aware there are two ways of analyzing query plans, namely ‘Include Actual Execution Plan’ and ‘Display Estimated Query Plan’ The Include Actual Execution Plan option will provide the execution plan after the completion of the query. However, this option […]

SQL Server T-SQL Tuning – Temp Tables, Table Variables and Union

In this article series we will focus on the primary points of T-SQL performance tuning. In this first installment I will lopok at tuning temp tables, table variables and the Union command. Temp Tables and Table Variables Most database developers are used to breaking down code into small chunks using  temp tables or table variables  […]

SQL Server T-SQL Tuning -TVF and Scalar Functions

In the first of this series we looked at TSQL tuning for temp tables, table variables and the Union command , we now turn our attention to User Defined Functions – either Table-Valued Functions or Scalar Functions. A UDF is very convenient for centralising business logic as we can specify a set of business logic […]

TroubleShooting SQL Server Memory Consumption

Recently on one of our staging servers had a memory consumption issue and even 32 GB of RAM was looking insufficient and application performance was being impaired. Initially I thought the cause would be poorly designed queries, but after a thorough investigation this turned out not to be the case. I noticed that whenever the […]

Performance Tuning Re-indexing and Update Statistics – A Case Study

Recently we started experiencing a very strange issue in our production reporting environment where the Re-indexing and Update Statistics operation suddenly began taking more than 2 days to complete and was thus causing blockage in the database which in turn caused impairment in application performance. Reporting Server Configuration Details: SQL Server Version: SQL Server 2005 […]
Software Reviews | Book Reviews | FAQs | Tips | Articles | Performance Tuning | Audit | BI | Clustering | Developer | Reporting | DBA | ASP.NET Ado | Views tips | | Developer FAQs | Replication Tips | OS Tips | Misc Tips | Index Tuning Tips | Hints Tips | High Availability Tips | Hardware Tips | ETL Tips | Components Tips | Configuration Tips | App Dev Tips | OLAP Tips | Admin Tips | Software Reviews | Error | Clustering FAQs | Performance Tuning FAQs | DBA FAQs |