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(Dirty page) refer to data pages that have been read from disk and have been modified. The reference information is used to implement the page substitution policy for the data cache page, which uses the LRU-K algorithm. The LRU-K algorithm retains the value of the buffer hold pages in the active buffer pool, and if the buffer holds a page with a low reference frequency, the buffer pages are gradually released back into the list of free buffers.LazyWr

result is as follows. The first and last characters are manually changed to asterisks and are not pasted. Computer : .OSCaption : Microsoft Windows Server 2012 R2 StandardOSArch : 64-bitSQLver : 11.2.5058.0SQLedition : Developer EditionProductKey : *****-G8T4R-QW4XX-BVH62-***** For SQL Server 2000,200 5, there

Tags: http ar uses SP for strong file data onBCP is a command-line tool in SQL Server that is responsible for importing and exporting data, is db-library-based, and can efficiently import and export large quantities of data in a parallel manner. BCP can export a table or vie

When you log on to SQL Server 2005, you may encounter an error: 'No process is on the other end of the pipe '. Solution: (1) Open up SQL Server suraface area Configuration tool by clicking Start > Microsoft SQL

, each section is a cache store Understanding: Cache:Cache Store:Store In the SQLSERVER Buffer Pool, there are many suchCache store)And each store sells different things. What's more interesting is that Only sell the same item Write and release cache pages SQLSERVER uses LRU (Least Recently Used Least Recently uses algorithms) to calculate the page life in the Buffer Pool. MYSQLAndORACLEThe LRU a

, we can back up the LDF file, then rebuild the entire database from scratch with these backed up transaction log records, and restore the database to any point in time, compared to the first method, through transaction logging. In fact, SQL Server uses both of these methods. Recovery mode Right-click Database Properties--options--you can see the "Recovery Model", the SQLSERVER2008 Database recovery model

Tags: Observing judging condition count Note ROM Index tar link The source of this article: http://www.cnblogs.com/wy123/p/6704619.html Issue background In a write SQL Server stored procedure, if a temporary table is defined in the stored procedure,Some people are used to explicitly delete a temporary table defined in the process at the end of the stored Proced

Label:Source: Why not a subquery in SQL Server is not recommendedIn SQL Server, subqueries can be divided into correlated subqueries and unrelated subqueries, but not-in clauses are common for unrelated subqueries, but the not-in clause leads to the following two types of pr

SQL Server 2000 database LDF is damaged. Only the restoration of SQL Server 2000 database files by MDF is often damaged. Can I fix database errors? The answer is yes. This log uses an

tables, when adding records at different times, the programmer to use different SQL statements, such as when adding records in 2011, the programmer to add records to the 2011 table, in 2012 to add records, The programmer wants to add the record to the 2012 table. In this way, the programmer's workload increases and the likelihood of errors increases.The use of partitioned tables can be a good solution to the above problems. A partitioned table can ph

The solutions to the four most common errors in SQL Server connection are as follows:1. "SQL Server does not exist or access is denied"This is the most complex. There are many causes of errors and there are many aspects to check.G

The simplest way is1: Create a new database with the same path name and files.2. Disable the SQL Server service;3: COPY the source file;4: enable the SQL Server Service to solve the problem.If the above method cannot be solved, we can refer to the following method.1. Change the database to emergency mode. The code

general SQL statement query method as follows:DECLAREINTSELECT1IFISNULL SELECT SomeCol2 FROM Test WHERE 11ELSE SELECT SomeCol2 FROM dbo.Test WHERE 11 AND SomeCol2 = @colGOAs above can only be barely solved the problem, because only for one parameter, if there are more than one parameter to do if ... ELSE: That would be silly. To solve this problem in essence, we need to recompile with optional options. As foll

SQLServer2000 was installed yesterday. Because the local backup file did not respond after it was installed, it is estimated that the integrity of the SQL compressed package was damaged during virus removal. Therefore, the original MSSQL disc was installed, but the prompt was: previously, file operations were suspended during the installation of a program. Restart the program before installation. This probl

Although we can use job logs to check whether SQL Server Job runs successfully or fails, manual queries are neither timely nor intelligent. The following describes how to set mail notifications for SQL Server to automatically send status emails after the job is completed. Th

The most common solution for SQL Server data import and export is to import and export data. Currently, ASP and PHP are mainly used for website construction. The databases used in these two languages are SQL Server and mysql, respectively. These two databases have their resp

Label:Scenario: If the primary key of this table or one of the columns uses IDENTITY (total) self-growth, but you want to manually specify a value for this column, use the following solution:SET IDENTITY_INSERT table name onUse this command to set the self-increment column of the table to OnThen use:SELECT 3, 0, ' Adolph ', 141,0,2, ' 133 ', ' 3:23pm ', ' 133 ', ' 3:23pm ', 0, ' NULL ', insert the data (the way you use SELECT, you cannot insert into).When the insert

Query the size of all tables in the database, and which tables have a large amount of dataCreate Table#t (Namevarchar(255), Rowsbigint, reservedvarchar( -), datavarchar( -), index_sizevarchar( -), unusedvarchar( -)) execSp_msforeachtable "Insert into#texecsp_spaceused'?'" Select SUBSTRING(T.reserved,0,CHARINDEX('KB', t.reserved)-1),* from#t TOrder by cast(SUBSTRING(T.reserved,0,CHARINDEX('KB', t.reserved)-1) as int)descDrop Table#tSQL Server data

environment... please wait", true );Delay (1 );// Determine whether Microsoft SQL Server or MSDE is installed.Skey = "software // Microsoft SQL Server ";Szmsg = "micorsoft SQL Server o

Tags: des style blog http io ar color OS useThe original: Everyone is DBA (II) SQL Server MetadataA set of tables is maintained in SQL Server to store information about all objects, data types, constraints, configuration options,