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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
worry about it, of course, the above scenario is not completely covered, or at least to explain part. The results we got above look at the execution time, now let's look at the two query execution plans.0 ) from sys.tables as T; 0 ) from sys.tables as T;The above may not be accurate, but also related to hardware configuration, it is possible to coalesce poor performance and IsNull. There should be no b
Label:Today I would like to talk about a special topic in SQL Server--Instant file initialization (Instant initialization). For your instance of SQL Server, if you enable Instant file initialization, you will get a huge performance boost under certain circumstances. Instant
Tags: des c style Blog Code AOriginal: [Translate]--SQL server 5 performance killers using linked serversForeword: This article is to blog http://www.dbnewsfeed.com/2012/09/08/5-performance-killers-when-working-with-linked-servers/ Translation, if the translation is not good or bad place, please point out, we study pro
Many times, the performance bottleneck of our server will be when querying the database, so it is very important to cache the database, then there is no way to implement the SQL Server database cache, when the data table is not updated, read from the cache, when there is an update, only read from the data table, The an
benchmarks, industry standards, previous versions of the situation How baselines are expressed, including: Batches completed per second (jobs), transfers per second, amount of data per second, disk scan time, etc. Analyze the factors that affect performance: Database design (whether it is a complex paradigm, whether it is reasonable to archive, partition, sub-table, etc.) Software systems (operating system optimization, database system configuratio
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 Tuning entry (graphic version)
Step 1: capture sample data during business peaks(About 2 hours ). The tool used is the profiler that comes with sqlserver, also known as the event probe. For example, after entering, click the button on the leftmost side to create a new trail: DBO permission is required for logon, therefore, you can log on wi
instances
process:paging File Bytes to monitor the size of virtual memory
The more data stored in virtual memory, the greater the difference between the amount of physical memory and the actual demand, the value is only as a reference value, and if it is close to 100% for a long time, then the system is likely to be abnormal. Second, monitor SQL Server usage of memory resources from the
Tag: Style color IO using strong SP data on problemIn recent times, has been exploring the SQL Server query performance issues, of course, also aimless search for a lot of information, but also from the online great God's articles learned a lot, here, to the great God salute. It is by the great God selfless dedication of the influence of the spirit, so, the young
1> Computer HardwareIf you suspect that computer hardware is the main cause of affecting SQL server performance, you can monitor the load of the corresponding hardware through SQL server performance monitor to confirm your guesses
defining the cursor for the temporary table, which can improve performance significantly.
Note: The so-called optimization is where the clause takes advantage of the index, and there is a table scan or extra overhead that is not optimized. Experience has shown that the greatest improvement in SQL Server database performance
The performance damage of bookmarks in SQL Server, sqlserver
In my blog, I used to talk about searching for bookmarks in SQL Serverl, and there are many problems they bring about. In today's article, I want to further talk about bookmarking from the perspective of performance
what you need to do, especially if you use a linked server (linked server) in your SQL statement, for example, I have encountered a SQL statement similar to the following, executed for 10 minutes
1:select *
2:from localtable
3:where Somecolumn
4: (SELECT COUNT (*)
5:from RemoteServer.SomeDB.dbo.SomeTable
6:wher
Label:General countersCollects server performance information for operating system servers, including processor, disk, network, memory Processor Processor 1.1% Processor time refers to the percentage that the processor uses to perform non-idle threads. This counter allows you to determine the current percentage of CPU usage for the server. 1.2% Privileged is the
I. Preface
After the new installation of SQL Server 2005/2008, We need to configure SQL Server Based on the Server's hardware and software facilities to achieve better performance. However, the default configuration is used in most cases.
Ii. Configuration
1.
SQL Server Performance Analysis
SQL Server performance analysis Author: tofu chinaasp
If you suspect that computer hardware is the main cause of affecting the performance of
Use Windows performance monitor to monitor common SQL Server metrics
As mentioned in the above article, Win's Performance Monitor is an essential tool for monitoring database performance. Next I will introduce some common monitoring metrics, which are nothing more than disks
personally think that if most of the requests reach the second paradigm, the system will generate fewer columns and more tables, this reduces data redundancy and improves performance.
2,
Reasonable redundancy
It is almost impossible to design a system completely according to the standardization. Unless the system is very small, it is necessary to add redundancy in a planned manner after the standardization design.
Redundancy can be a redundant databa
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