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background : When you recently migrated SQL Server database 2008, when you created a user mapping. SQL Server error: User, group, or role ' XXX ' already exists in the current database. Error: 15023.here 's how to fix it.650) this.width=650; "title=" QQ picture 20160908093002 "style=" border-top:0px;border-right:0px;background-image:none; border-bottom:0px;padding-top:0px;padding-left:0px;border-left:0px;padding-right:0px; "alt=" QQ picture 20160908

In the MySQL error log, a large number of similar information is found: (MySQL 5.7.18) [Note] Aborted connection 1055898 to db: ' xxx ' User: ' yyy ' host: ' xxx.xxx.xxx.xxx ' (Got timeout reading communication packets) In this aborted connection case, MySQL increases the value of the Aborted_clients status counter. This also means the following issues: (1) The client is properly connected, but is terminated abnorma

Primary key repeat duplicate entry ' xxx ' for key ' PRIMARY ' when MySQL primary key is set to Auto_increment, concurrency performance test occursWorkaround:Add settings to the [mysqld] fragment in My.cnf innodb_autoinc_lock_mode=0Also pay attention to increasing the number of active links in JDBC, such as setting jdbc.maxactive=300, because setting innodb_autoinc_lock_mode=0 may result in more links. Note that this method only needs to be set during

Implementation of Linux under OD-TX-TC xxx function one, od command (1) functionThe OD command is used to display the specified file contents in eight-, decimal, 16-, floating-point, or ASCII-encoded characters, and is typically used to display or view characters in a file that cannot be displayed directly in the terminal.Common files are text files and binary files. The OD command is used primarily to view the values stored in a binary file, interpre

Recently, due to the development in windows and deployment in linux, the project suffered a lot of cross-platform losses, for example, we found that the names of mysql tables in linux are case-sensitive. This is another pitfall, when tomcat connects to mysql, the error Accessdeniedforuserxxx@localhost.localdomain (using Recently, due to the development in windows and deployment in linux, the project suffered a lot of cross-platform losses, for example, we found that the names of mysql tables in

Today I want to tell the story is about playing xxx how to stabilize the profit, as a senior blocking ghost I have a very good voice. Fortunately, I have quit this thing now. I want to live a good life.I am in the village, every family will play cards, will be fried xxx, playing xxx ... In a word about XXX, to the 80-y

Xxx Management Platform project summary Preface After one year's work, the project finally enters the payment process, and the project finally comes to an end. I will not continue to lead the second phase. After all, the family is the first, otherwise, it violates my original intention. I don't know whether the project is successful or failed. From the perspective of the project application, the project fails to achieve the expected results and

ArticleDirectory 1. app_code/accounts. CS 2. default. aspx. CS 3. login. aspx. CS Use the response and request objects in non-xxx. aspx. CS files, that is, in the codefile file of the aspx file (code behind separatedCodeFile. I believe that users with ASP. NET development experience are absolutely familiar with response and request objects. Their functions and benefits are not covered in this article. Normally we are in

Build * * * Virtual line:GRE ××× 只支持linux 内核内置的功能 内核也是模块化设计的 PPTP ××× 通信不加密 被发现了容易被加防火墙L2TP+IPSEC ××× 通信加密 专有通道走公网ip的线路 再在这个线路上开一个私有的线路192。。***linux系统天生就是路由器！！ echo "1" > /proc/sys/net/ipv4/ip_forward 打开路由功能GREXXX:Enable kernel module Ip_greCreate a virtual XXX tunnel (10.10.10.0/24)Achieve point-to-point tunnel communication between two hosts 使用lsmod查看当前计算机已经加载的模块 使用modprobe加载Linux内核模块 使用modinfo可以查看内核模块的信息 modprobe ip_gre

64-bit Ubuntu Android Studio The following error occurred while compiling Gradle:Java.io.IO Exception:cannot Run Program "/HOME/KING/TOOLS/ANDROID/SDK/BUILD-TOOLS/23.0.3/AAPT": error=2, no file or directoryWorkaround:Several 32-bit compatible libraries need to be installed on 64-bit$ sudo apt-get install-y libc6-i386 lib32stdc++6 lib32gcc1 lib32ncurses5 lib32z1Transferred from: http://blog.csdn.net/zjclugger/article/details/51360216Ubuntu cannot run program ". /sdk/build-tools/

　　1. Problem description--whatReady to build a lamp environment on a virtual machine's Linux (Centos) system using: sudo yum install httpd; prompts need to be converted to administrator mode.So I switched to root using the sudo command, and I found a hint: LMS is isn't in the sudoers file　　 2. Cause of the problem--when/why　　The reason:1.when--When you use sudo to switch root, but not every time you use the command, you will encounter this problem2.why--LMS user not added to sudo config file3.

Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization (Abstractautowirecapablebeanfactory.java:407) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean ( Abstractautowirecapablebeanfactory.java:1426) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean ( Abstractautowirecapablebeanfactory.java:519) ... OneMoreSearch the Internet, found that the

Redhat System:The Create user command in Linux is: Useradd user name, Eg:useradd testSpecify password: passwd testBut sometimes we need to run a command with test to execute some root user, and there are two ways: the first, the method is executed with the test user and executed by the root user. Second, use the sudo command to give the user test a root permission temporarily. The first one we don't think about, the second is our main adoption method, but by default, the user does not have sudo

Error message displayed: Error message: The process was unable to the table "dbo". " Company "" For bulk copy. (Source: MSSQL_REPL, Error number: mssql_repl20037) Getting Help: http://help/MSSQL_REPL20037 Batch Send failed The length of text used to bulk copy text, ntext, or image data is missing in the data stream. (Source: MSSQLSERVER, error number: 4813) Getting Help: http://help/4813 To obtain a detailed description of the error file for the error that was encountered when initializin

When you copy a folder on a Linux system, you are prompted as follows:Shell: cp:omitting directory ' foldera/' Where Foldera is the name of the folder I want to copy, the reason for this warning is that the directory still exists under the Foldera directory, so it cannot be copied directly.Workaround: Using a recursive copy, add the-r parameter after the CP command, as follows:Shell: [Email protected] opt]# cp-r Foldera FOLDERC The-R here represents the meaning of recursion.Similar

first, the problem foundSelect Num,name,phone from studentifTest = "Num!=null and num!=" >and num=#{num}if>MyBatis query passed in a string argument, reported there is no Getter forProperty named ' Num ' in ' Class java.lang.String '. Second, solve the problemSelect Num,name,phone from studentifTest = "_parameter!=null and_parameter!=" >and num=#{_parameter}if>regardless of the parameter name, change to"_parameter". Third, cause analysis MyBatis default uses ONGL parsing parameters, so will auto

#include#include#defineRand (T) t* ((rand () Const intMAXN = 1e6 +Ten;Const DoubleEPS = 1e- -;using namespaceStd;inlineintRead () {Charc = GetChar ();intx =0, F =1; while(C '0'|| C >'9') {if(c = ='-') F =-1; c =GetChar ();} while(c >='0' C '9') {x = x *Ten+ C-'0'; c =GetChar ();} returnX *F;}intN;structPoint {Doublex, Y, W;} A[MAXN];DoubleAverx,avery;DoubleCalcDoubleXDoubley) {DoubleAns =0; for(inti =1; I ) ans+ = sqrt ((x-a[i].x) * (x-a[i].x) + (Y-A[I].Y) * (Y-A[I].Y)) *A[I].W; returnans;}in

When you create a new form or window using Com.bitc.xmis.ExcelImportWin = Ext.extend (Ext.window, {}), you should add the following Com.bitc.xmis.ExcelImportWin.superclass.initComponent.call (this);The Ext.extend () function provides a way to directly access the parent class constructor, through SubClass.superclass.constructor.call (this), so that the constructor of the parent class can be called directly, and the first argument of the function is always this, To ensure that the constructor of t

partsThe first is to configure the database in the WebconfigproviderName="System.Data.SqlServerCe.4.0 修改成providerName="System.Data.SqlClient" 这样就可以添加成功控制器了Second generation controller after the Providername= "System.Data.SqlClient back to Providername=" system.data.sqlserverce.4.0 is OKThere is no second part, which means that the following error will be reported if you do not revert back:“[Win32Exception (0x80004005): The network path could not be found. ][sqlexception (0x80131904): A network-

The amount of the Belch does not start with a BB. Time is pressing.These two days have been working on the JNI thing, under Windows Normal, but under the Liunx always reported an error, no XXX on Java.library.path, in the Java.library.path can not find the specified so library. Feel very strange, so useSystem.out.println (System.getproperty ("Java.library.path"))Prints out the path of the Java.library.path. means my path is at sixes and sevens.Step by