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50 methods to skillfully optimize your SQL Server database There are many reasons for slow query speed. The following are common causes: 1. No index or no index is used (this is the most common problem of slow query and is a defect in programming) 2. Low I/O throughput, resulting in a bottleneck effect. 3. the query is not optimized because no computing column is created. 4. Insufficient memory 5. slow network speed 6. The queried data volume is too
EnvironmentOperating system: CentOS 6.5DNS software: Bind (Installation reference: "Linux" DNS service-bind basic configuration (ii))Bind slave ServerFrom the server is to add the configuration information from the domain example.net in the main configuration file of Bind 3 1. configuration file Location /var/named/chroot/etc/named.conf2. Add a zone definition for a row of fields in the master configuration file:Zone "Example.net" {Type slave;Maste
The first step: through the taskbar, "Start-> All Programs-> Administrative Tools," and then find Internet Information Services (IIS) Manager, open the manager will find at the bottom of the "FTP site" option, we are through it to establish an FTP server. (pictured below) Step two: By default, FTP site has a default FTP site, we just put the resources to the system directory in the Inetpub directory in the FTPRoot folder. For example, the sy
Today set up a Windows Server 2003 Web server, found that after opening the Web page can not download the. exe file in the website, after the research problem can be solved, to make a memo. The workaround is simply to set the Execute permission in the site properties to "plain Script" in IIS. Attachment: Windows Server 2003
First, Lamp introductionLAMP (linux-apache-mysql-php) website architecture is a popular web framework, consisting of: Linux operating system, Apache network server, MySQL database, PHP programming language, all components are open source software, is a popular and mature architecture framework in the world, and many popular commercial applications have adopted this architecture.Lamp has a common, cross-platform, high-performance, low-cost advantages,
PHP checks whether the client uses the proxy server and its anonymous level. PHP checks whether the client uses the proxy server and its anonymous level. The php proxy server must determine whether the client uses the proxy server, you can use PHP to check whether the client uses the proxy
Image Server SETUP tutorial and Server SETUP tutorial1. install and configure FastDFS1, runtime environment and related software CentOS 7.4 64bit fastdfs_v5.08.tar.gznginx-1.8.1.tar.gzfastdfs-nginx-module_v1.16.tar.gz libfastcommon2. Server Planning Server Name IP address and port Remarks Fa
PremiseWhen this article discusses only SQL Server queries,For non-composite statistics, where the statistics for each field contain only the data distribution of theHow to estimate the number of rows based on statistical information when combining queries with multiple fields.The algorithm principle of estimating the number of data rows using statistics from different fields, and the differences between SQL Serve
# The followingArticleThe ESX Server directly installed on the hardware is called the [host ESX Server], and the ESX server installed on the host ESX Server is called the [Guest ESX Server] 1. Set the guest ESX Server Just lik
First, use Microsoft OLE DB Provider for ODBC link to MySQL Install MySQL-driven ODBC driver MYODBC 1, for MySQL to establish an ODBC system data sources, such as: Select the database test, the data source name called MyDSN 2, establish the link database EXEC sp_addlinkedserver @server = ' mysqltest ', @srvproduct = ' MySQL ', @provider = ' Msdasql ', @datasrc = ' MyDSN ' go EXEC sp_addlinkedsrvlogin @rmtsrvname = ' mysqltest ', @usesel
The last time we introduced the DHCP server, this time to introduce you to the DHCP server backup, restore and transfer First, the backup and restore of DHCP Today's environment is: SERVER01 domain controller. SERVER02DHCP Server, server05 Client (user tests whether the DHCP server is working properly) Example: Backup
Varnish reverse proxy server introduction, varnish Proxy Server First, we will introduce the cache system:Two logics for running the program: 1. run on a single host 2. run collaboratively on different hosts (1. transverse cut 2. vertical Cut ----> 1. only responsible for one level 2. server expansion: 1. up (scale up) 2. scale out: a business can be divided into
Article Related software: Webalizer http://www.mrunix.net/webalizer/ Cronolog http://www.cronolog.org/ Apache http://www.apache.org/ First, the preface With the development of Web services on the Internet, almost every government department, company, University, Scientific Research Institute and so on are constructing or building their own websites. At the same time, in the construction of the site in various units will encounter a vari
Tags: message class TOC start log output share tar usage log[Email protected]:~# mount-t NFS 192.168.10.220:/hipchat/share/home/share/nfsMount.nfs:access denied by server while mounting 192.168.10.220:/hipchat/share# Reason: Using NFSV4 in the server Oracle Linux 6.8 System, you can see the log Output at NFS startup in/var/log/messages:Feb 11:23:07 localhost rpc.mountd[19234]: Version 1.2.3 StartingFeb 11:2
Abstract In embedded development, there are two types of host machines: Host machines are computers that compile and link embedded software, and target machines are hardware platforms that run embedded software. As a host software, the TFTP server mainly provides download of the main image files of the target machine. Solution 1. Use the following command to install the TFTP server. You can see that the TFT
SQL Server uses scripts to create updatable subscriptions for distribution services and transaction replication, and SQL server scripts [Create a local distributor] /************************ [Use local distribution server configuration release ]******* */-- SqlServer 2008 R2 -- https://technet.microsoft.com/zh-cn/library/ms151860 (v = SQL .105 ). aspxuse masterg
1. Admin Server and Manager server memory allocation defect DescriptionWebLogic servers typically design one or more domains (domain) for each business system, and each domain service principal must consist of two types of server, admin server and manage server. Both types o
Network Time Protocol (NTP) is used to synchronize the system time of different hosts on the network. All hosts you manage can synchronize their time with a specified time server called an NTP server. On the other hand, an NTP server synchronizes its time with any public NTP server, or the
How to use PHP to implement a dynamic Web server and a php dynamic web server. How to use PHP to implement a dynamic Web server. if a php dynamic web server is actually a web server, you need to understand the operating principle of the web
1. RDA Introduction2. Requirements and Configuration3. RDA object Method4. RDA sample code======================================1. RDA Introduction------------In Microsoft SQL Server 2005 mobile edition (SQL Server mobile ),Remote Data Access (RDA) allows applications to access data from remote SQL Server database tables,And store the data in the local SQL
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