Automatic Deletion of Stuck Processes in MS SQL Server

Introduction

There are situations when applications keep the database connection for a long period of time. It seems to be not important. However, if this application makes many connections or there are several applications with such behavior — things are getting worse.

This article is not a tutorial. It describes possible solutions to this issue. As usual, I will be glad to hear any alternative solutions.

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Troubleshooting long running queries in MS SQL Server

Preface

There is an information system that I administer. The system consists of the following components:

1. MS SQL Server database
2. Server application
3. Client applications

These information systems are installed on several objects. The information system is used actively 24 hours a day by 2 to 20 users at once on each object. Therefore, you cannot perform routine maintenance all at once. So, I have to «spread» SQL Server index defragmentation throughout the day, rather than defragmenting all the necessary fragmented indexes at one stroke. This applies to other operations as well.

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Implementing SQL Server Performance Indicator for Queries, Stored Procedures and Triggers

Preface

Sooner or later, a DB administrator would like to have a performance indicator for SQL Server queries. As we all know, running Profiler for 24 hours will lead to a considerable system load and therefore, it cannot be considered an optimal solution for databases used in the 24/7 mode.

So, how can we detect the state of SQL Server queries? How can we run trace for detected query-related problems without the human input?

In this article, I will provide an implementation of the SQL Server performance indicator for queries, stored procedures and triggers, as well as its usage for the trace run. Read More

Automating Index Defragmentation in MS SQL Server Database

Preface

The World Wide Web offers a bunch of information on SQL Server index defragmentation or SQL Server  index rebuild. However, most of the recommendations refer to databases that have minimum load time (mostly, at night).

And what about databases that are used for both, data modification, and retrieving information on a 24/7 basis?

In this article, I will provide a mechanism for automating SQL Server index defragmentation implemented in a database used in the company I work for. This mechanism allows defragmenting required indexes on a regular basis since index fragmentation takes place constantly in the 24/7 system. Often, this is not enough to perform index defragmentation once a day. Read More