index performance tuning in sql server

In a large database, performance has become one of the focuses of attention. How to Make the efficient and effective operation of the database become an issue that must be considered by database administrators and developers. Performance is the measure of efficiency when one or more applications run in the same environment. Performance is usually expressed by res

Label:SQL Server Database performance optimizationRecent project needs, did a period of time SQL Server performance optimization, encountered some problems, but also accumulated some experience, now summed up, with June share. SQL

report server cache per second. Memory Cache Hits/sec The number of times per second that the report was retrieved from the memory cache. The memory cache is part of the report services cache, which stores reports that are displayed in memory or in temporary files. This will provide the best performance for the request because there is no need to process it. When the memory cache is availabl

Preface Indexes are one of the most important objects in relational databases. They can significantly reduce disk I/O and logical read consumption and improve the query performance of SELECT statements. However, it is a double-edged sword. Improper use affects performance: it requires additional space to store the index information and requires additional overhead to maintain index synchronization when data

perform it during idle time on the server. after repeated tests, after, the server maintenance job has not run yet, and the user has been off duty, even if each contraction is 100 GB, it only takes more than one hour. Despite the unsatisfactory results, readers may want to see how to solve the problem thoroughly. However, it is a formal environment and cannot be easily tried or modified. However, in additi

, and spikes in CPU and memory resource consumption occur on the server. System structure The performance problem stems from the whole structure and development process of the system. The application of the Olite system is a Web Form program based on the. NET platform, and the database is SQL Server 2005. Its main stru

SQL Server query performance optimization analysis transactions and locks (I) SQL Server query performance optimization analysis transactions and locks (ii) SQL

Many of my friends may be making mistakes in performance optimization as described below. If you have any need, please refer to the mistakes in SQL Server query performance optimization to get out of the index. Many of my friends may be making mistakes in performance optimiz

SQL Server Performance Tuning 3 Index MaintenancePreface The previous article introduced how to improve database query performance by creating indexes, which is just the beginning. If you do not need proper maintenance in the future, the indexes you have previously created may even become a drag-and-drop attack and a h

SQL Server Performance Tuning 3 (Index) MaintenanceHeat1 reviews Brook Stream GrassSQL Server Performance Tuning 3 (Index) MaintenanceObjectiveThe previous article describes how to improve the query performance of a database by b

SQL Server Full-text indexing performance has been not too good, listen to colleagues today to share, found a skill, go back to try, found that can obviously improve the performance of full-text indexing, generally can improve twice times + Original SQL statement: SELECT

execution. Then, there are operators that require additional memory space to store row data, and the amount of memory required by such operators is usually proportional to the number of rows of data processed. This can cause memory to not be applied if any of the following conditions affect execution performance A, if the server is performing other similar memory consumption of large queries, resulting in

After a period of research, we started to optimize the performance this week. Before optimization, I will summarize some of the information I have investigated. 1. Background This is a system developed in the past 03 years. NET 1.1 + SQL Server 2000, the operating system uses Windows2003. After so many years of use, the operating system was upgraded (from Windows

The source of this article: http://www.cnblogs.com/wy123/p/7106861.html(It is not the original works right to retain the source, I my book still far to reach, just to link to the original text, because the following may exist some errors to amend or supplement, without him)Recently encountered in SQL Server several times the developer submitted the performance pr

Tags: causes 1.7 read data to execute disk has one other build multipleThe focus of performance optimization is to identify location problems, get a better understanding of the major performance killers, and be able to pinpoint problems faster and focus on the possible causes. The SQL Server

Tags: blog http io os using AR java strong SPIndex of http://www.blogjava.net/allen-zhe/archive/2010/07/23/326966.html Performance optimizationRecent project needs, did a period of time SQL Server performance optimization, encountered some problems, but also accumulated some experience, now summed up, with June share.

SQL Server performance analysis query table space and available space Posted @ zping read (58) | comment (0) Edit Interval between querying long transactions and SQL Execution Posted @ zping read (110) | comment (0) Edit Query execution information of SQL

SQL Server performance optimization involves many aspects, such as good system and database design, high-quality SQL writing, appropriate data table index design, and even various hardware factors: network performance, server

performance gains of indexes, it's very difficult to actually build enough correct and necessary indexes at the outset, how can we infer which tables need to be indexed and which ones are not built correctly?Typically, SQL Server executes a query script with an existing index, assuming that no index is found he will voluntarily generate one and store it in the D

Original: SQL Server R2 Performance counter detailed list (i)SQL Server Backup Device counters:Can monitor the Microsoft SQL Server backup device for backup and restore operations