Main Usage of sys.dm_os_wait_stats

Total: 11 Average: 4.3

As you know, the main responsibility of the database administrator lies in the monitoring of the SQL Server performance and intervening in determined time. You can find several SQL Server performance monitoring tools in the market but sometimes we need additional information about SQL Server performance to diagnosis and troubleshoot the performance issues. So we must have enough information about SQL Server Dynamic Management Views to handle issues about SQL Server.

Dynamic Management View (DMV) is a concept that helps us to discover SQL Server Engine performance metrics. DMV was first announced in SQL Server 2005 version and it continued in all versions of SQL Server afterward. In this post, we will talk about particular DMV whose database administrator must have enough information. This is sys.dm_os_wait_stats.

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Compare Execution Plans in SQL Server

Total: 17 Average: 3.9

Database Administrator always makes an effort to tune SQL Server query performance. The first step in tuning query performance is to analyze the execution plan of a query. Upon some conditions, SQL Server Query Optimizer can create different execution plans. At this point, I would like to add some notes about SQL Server Query Optimizer. SQL Server Query Optimizer is a cost-based optimizer that analyzes execution plans and decides the optimal execution plan for a query. The significant keyword for the SQL Server Query Optimizer is an optimal execution plan which is not necessarily the best execution plan. That’s why, if SQL Server Query Optimizer tries to find out the best execution plan for every query, it takes extra time and it causes damage to SQL Server Engine performance. Read More

SQL Server IntelliSense and Autocomplete

Total: 14 Average: 4.3

Starting from SQL Server 2008, Microsoft introduced a new feature in the SQL Server Management Studio that helps the database developers and the database administrators writing the T-SQL commands faster by reducing the typing effort and providing a quick access to the syntax information via listing all available database objects with their properties. This feature is called IntelliSense.
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Jump to Start Test-Driven Database Development (TDDD) – Part 2

Total: 5 Average: 4.4

We discussed the basics of test-driven database development (TDDD) with examples and compared it with traditional database development in the first part of this article.

In the second part, we are going to move beyond basics to focus on a more realistic scenario of meeting report requirements by using TDDD.

A quick recap of TDDD at this point is handy in understanding how it can help us to achieve such goals.

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Registered Server, a Hidden Gem of SQL Server Management Studio. Part 2

Total: 3 Average: 4

In my previous article, I have covered the following topics:

  1. What are Registered Servers and their usage.
  2. How to create and configure a Local Server Group and Central Management Studio.

In this article, I am going to demonstrate how to execute a query on multiple servers using Registered Servers. Also, I am going to cover how we can evaluate the database policy on multiple database servers using Registered Servers. Read More

Registered Server, a Hidden Gem of SQL Server Management Studio. Part 1

Total: 4 Average: 4.3

Managing numerous database servers in an organization is difficult. Either we must maintain a list or maintain an Excel file that has a list of database servers. To retrieve basic information about SQL Instance or databases, DBA must query on individual database servers. If a developer wants a DBA to execute an SQL Script on all database servers, DBA must review the list of servers and execute them one by one, which is time-consuming and error-prone. It might happen that DBA missed any server where it was required to execute. Imagine the cases when DBA must execute the script on specific database servers. It becomes very painful. This task can be performed using the PowerShell scripts but again, it requires some complex PowerShell coding. This task can be managed more efficiently using “Registered Servers”. Read More

Jump to Start Test-Driven Database Development (TDDD) – Part 1

Total: 5 Average: 3.4

The most common approach to developing database solutions is to start creating database objects based on business requirements which is also known as “Conventional Database Development”.

In this article, we are going to explore the implementation of such approaches as conventional database development and test-driven database development on the particular examples.

To begin with, have a closer look at the conventional database development.

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Analysis of MS SQL Server for those who see it for the first time – Part 2

Total: 1 Average: 5

Analysis of MS SQL Server for those who see it for the first time – Part 1

We continue to analyze what is happening on our MS SQL Server. In this article, we are going to explore how to retrieve information about user performance: who makes what, and how much resources are consumed.

I think the second part will be interesting for both database administrators and developers who need to understand what is wrong with the requests on the production server that used to work fine on the test server.

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Analysis of MS SQL Server for those who see it for the first time – Part 1

Total: 1 Average: 5

Ive recently encountered a problem – SVN went down on ubuntu server. I develop for Windows and I do not have much experience with Linux. I googled the errorwithout success. The error turned out to be the most typical one (the server unexpectedly closed the connection) and does not indicate anything. Therefore, it was necessary to go deeper and analyze logs/settings/rights/etc.

Finally, I figured out the mistake and found everything I needed, but I spent a lot of time. After solving this problem, I thought about how to reduce the uselessly spent hours and decided to write an article that will help people quickly get the understanding of the unfamiliar software.

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Transparent Data Encryption and Always Encrypted

Total: 1 Average: 5

If you need to store confidential data in your database, you can use data encryption. SQL Server supports encryption with symmetric keys, asymmetric keys, certificates, and password phrases. I assume that you, the reader, are already familiar with these terms. In this article, I will focus on two out of many encryption options provided by SQL Server:

  • Transparent Data Encryption (TDE)
  • Always Encrypted (AE)

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