sql server performance tuning best practices

physical disk when SQL Server reads the required data into the data buffer.Unfortunately, when we do query optimization, we do not need to consider physical reading. Although physical reads are likely to require more server resources than logical reads. Because SQL Server d

to have real value for real-world situations.Experience shows that you can get the most out of SQL Server performance from the general aspects of logical Database design, index design, query design, and application design. Conversely, the biggest performance problems are usually caused by defects in these areas. If yo

tuning also give the sort including CPU, run time, total IO, physical read, logical read, etc.Of course, my local machine itself is very small, and there are not many T-SQL statements running, so the chart tool shows a lot of emptiness.Take a look at the disk storageThis is generally the above content, their own use of the time to dig it, this article provides ideas.If the experienced DBA, I estimate that

Query OptimizerThere are rules in each field. In the simplest way, if you do not conform to the C # specification for programming, such as incorrect keyword usage, an error will be reported during compilation. Of course, there are some hidden rules in each field, and some people may say that they are "hidden rules". These rules are often not clear. For example, if you do not conform to the best practices to write a program, compilation will

. SQL Server Execution Time: CPU time = 17188 milliseconds, time consuming = 17261 milliseconds. (1 rows affected) SQL Server Execution Time: CPU time = 0 milliseconds, time consuming = 0 milliseconds. */ Comparing 2000 and 2008 can be found 2008 CPU time is significantly higher than 2000, 2008 work

Tags: Microsoft CTI object Complex problem: Lis use parameter BinThis article belongs to theUnderstand the mysteries of performance-slow in applications, fast in SSMS"seriesNext: Understanding the Mysteries of performance-application slow, SSMs fast (5)--case: How to deal with parameter sniffing We put aside the argument sniffing topic and went back to the original point of concern in this series: Why is th

very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the problems encountered, if you really want to find out, still have some theoretical knowledge to do the groundwork. Many times, often after encountering problems, recalled once good seems to have seen this aspect of theoretica

The company database grows with time, the data is more and more, the query speed is also more and more slow. Into the database to see a bit, hundreds of thousands of of the data, the query is really time-consuming.To improve the query performance of SQL, we generally consider the index as the first consideration. In fact, in addition to the establishment of the index, when we are under the

Windows Server 2008 R2 en enterprise 64bitSQL Server 2008 R2 en enterprise 64bit Symptom: the performance counters related to SQL Server are not displayed in Performance Monitor. Solution: Rebuilding the counters:CD c: \ window

all missing index determined by SQL Server. This analysis is not as comprehensive as the database Engine Tuning Advisor does, but it shows the obvious missing index. In fact we just want to not appear in this list any missing index, which represents our database design better.Finally, I would like to remind you:Most of the data sources for these statistics come

physical reads are likely to require more server resources than logical reads. Because SQL Server does not perform a query, it is not possible to reduce the number of physical reads by performance tuning. Reducing physical reads is a complex and important task, and it invol

1.1.1 Summary During the development process, we may encounter system performance bottlenecks from time to time, which may be caused by insufficient code efficiency or hardware or network problems, it may also be a problem with database design. This blog post will introduce some common database performance tuning methods. In addition, to write efficient

After setting the SET statistics profile, you will return to the Execution plan table, through which you can understand the process of statement execution and understand if SQL Server chooses the correct execution plan to determine the tuning direction!1. Returns the table field description:Rows: The actual number of rows returned in each step of the execution pl

Recently, due to work needs, I hope to make a comprehensive summary of the considerations related to SQL Server database performance optimization. After searching online, I found manyArticleSome of them list hundreds of entries, but you can see that there are a lot of seemingly incorrect or outdated information (which may be applicable to versions earlier than

server| View | index | performance What is an indexed view? For many years, Microsoft®sql Server™ has been providing the ability to create virtual tables, called views. In the past, these views have two main uses: Provides a security mechanism for restricting users to a subset of data in one or more base tables.Provide

I hope to make a comprehensive summary of my recent work needs.SQL ServerPrecautions for database performance optimization: I searched the internet and found manyArticleSome of them list hundreds of entries, but you can see that there are a lot of seemingly incorrect or outdated information (which may be applicable to versions earlier than SQL server6.5 or Oracle, I had to summarize my previous experience a

Long time no article, before the system officially launched, the DBA will generally test the performance of the serverFor example you have a lot of servers, some do Web server, some do cache server, some do file server, some do database serverThe server to do the database

Tags: Data Warehouse res warehouse IMA Misc SYS cell nbsp HighlightTo configure the Data collector: 1. Create a login and map roles 2. Configuring the Management Data Warehouse 3. Create collection sets, collection items----msdb data store sp_syscollector_create ... 4. Automatically configure the related job Specific steps: After creating the diagram: To configure Data collection: The refresh looks like this: The method created: Use msdb go declare @collectionsetid int --return val

disperse the concurrency pressure of the large scale data, also can speed up the speed of special query, the redundant field can reduce the connection of database table effectively and improve the efficiency.3.Design of the primary keyThe primary key is necessary, and the primary key for SQL Server is a unique index, and in practice, we tend to choose the smallest key group to work as the primary key, so t

after you've processed historical data and report data, then add these new hardware, such as faster CPUs and hard drives, larger memory, and so on, but add new hardware postscript to modify your SQL Server configuration to accommodate these new hardware, such as opening/ 3G switch to use more memory. Scale out when scaling the up does isn't suffice or is cost-prohibitive. Use horizontal expansion When yo