“How much time SQL Server is going to take to complete the database Backup or Restore” – This is one of the very common questions DBAs face in day to day life when they are performing database refresh activity, database migration activity, or any adhoc activity where DBA may want to have a DB backup […]
Introduction to Extended Events
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Since I started playing with Extended Events, it has been my favorite toy for performance troubleshooting. It was introduced in SQL Server 2008, and it provides a very rich method of collecting diagnostic data from SQL Server. You can get in-depth detailed information using extend event for troubleshooting which was never possible with SQL Trace. […]
SQL Operation Studio Tool
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Microsoft finally has launched most awaited tool – SQL Operation Studio (aka OpsStudio)!!! SQL Operation studio is a lightweight open source multi-os and multi-RDBMS tool. It provides a modern & intuitive database management experience on their platform of choice to DBAs, Developers, and Sysadmins. It also simplifies configuration, management and monitoring and troubleshooting for SQL […]
Finding Input Parameters in an Execution Plan
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The query execution plan is a map of work which SQL Server is going to perform to execute a query. It provides a lot of useful information like operators, cost, estimated rows, actual rows, predicate details, parallelism, and much more information to troubleshoot the performance issue. During the troubleshooting of the performance issues, I would […]
Figuring out Time-Out Prone queries
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Recently, I was helping one of the community attendees on the SQL Server Query Time-Out issue. Once we are done with troubleshooting, he asked a very excellent question; “I am dealing with very critical OLTP systems. As my company has been expanding the business, the data is rapidly growing. It is causing a lot of […]
Getting Query Execution Statistics
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If you hate things that are slow, I bet you certainly want to know the reason for the slowness. So, if you are SQL Developer and your query run slow, you would prefer to have query execution statistics so that you can figure out what causing the query to run slow. To get the query execution statistics, […]
Over-Indexing can hurt your SQL Server performance
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Indexes are a vast subject and well documented elsewhere on the web. But, it is still a very commonly asked topic. In order to improve your queries (applications) and databases performance, we create indexes. But those created indexes may not be very useful over the period because of your application requirement changes, the queries against […]
SQL Replication SubscriptionStreams setting
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In this blog, we will talk about improving distribution agent throughput by modifying the profile parameter – “SubscriptionStreams”. I will be discussing a few real time scenarios where I implemented the parameter to isolate latency issue between Distributor and Subscriber. Real Time Scenario Let’s think about; In your environment, you found that there are a few millions of […]
Extracting Deadlock information using SYSTEM_HEALTH Extended Events
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Extended Events is a powerful feature that was introduced into SQL Server 2008 and onwards. It keeps historical system health information of the SQL Server instance. Today, we are going to explore how quickly we can read the Deadlock information using Extended Event – “Without passing the default location of the extended events trace files” The system_health […]
What Immediate_sync means in Transactional Replication – Part1
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In my previous two blogs – Capture Important Parameters of the SQL Server Replication and Add new articles to existing Transactional Replication without initializing old articles, I mentioned about one of the very critical parameters to consider is the immediate_sync in the Transactional Replication. Let’s understand both the options of the parameter. When you say; immediate_sync= true It […]