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HomeDatabaseMysql Tutorial如何彻底卸载mysql(xp)

mysql卸载

完整的卸载MySQL 5.x 的方法:

1、控制面板里的增加删除程序内进行删除

2、删除MySQL的安装文件夹C:/Program Files/MySQL,如果备份好,可以直接将文件夹全部删除

3、开始->运行-> regedit 看看注册表里这几个地方删除没有

HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Application/MySQL 目录删除

HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Application/MySQL 目录删除

HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Eventlog/Application/MySQL

4、这一条是很关键的

C:/Documents and Settings/All Users/Application Data/MySQL

这里还有MySQL的文件,必须要删除

注意:Application Data这个文件夹是隐藏的,需要打开个文件夹选择菜单栏 工具→文件夹选项→查看→隐藏文件和文件夹 一项选上 显示所有文件和文件夹 确定

5、删除mysql服务

打开命令行 输入 sc delete mysql 命令即

  C:>sc delete mysql

  [SC] DeleteService SUCCESS

做完以上5条重新安装

一、wizard安装最后一页,出现cannot create Windows service for mysql.error:0 错误

解决方法:打开命令行 输入 sc delete mysql 命令即

  C:>sc delete mysql

  [SC] DeleteService SUCCESS

重起电脑,或者卸载后重启再安装,这样就好了。我没重启也安装成功了

卸载重新安装要注意一个问题,在控制面板中卸载后,要去c:/Documents and Settings/All Users/Application Data目录下把Mysql文件夹删掉。里面可能记载了你卸载的配置信息,下次安装时会有影响。

二、在让输入管理员输入密码时除了password和confirm password之外还有一行current password。这说明你安装之前没有把我第1条中说的目录下把Mysql文件夹删除。不知道是否影响后续使用,可能记得密码的话没关系。另附带一句,管理员密码是自己设的,用户名则为默认root。

安装成功后可测试如下:打开mysql command line client,输入密码,出现

Welcome to the MySQL monitor.  Commands end with ; or /g.

Your MySQL connection id is 3

Server version: 5.1.33-community MySQL Community Server (GPL)

Type 'help;' or '/h' for help. Type '/c' to clear the buffer.

mysql>

则安装成功!

三、mysql server configuration失败。在配置向导中查看错误提示有如下语句:

  mysql-server-5.5-win32:60 - Adding firewall rule for MySQL55 on port 3306.

  mysql-server-5.5-win32:66 - Adding firewall rule failed.

表示防火墙安装失败。

查看安装日志能找到以下语句:

  mysql-installer Information: 10 : Attempting to create firewall rule with command: netsh.exe  firewall add portopening protocol=TCP port=3306 profile=ALL name=MySQL55 mode=ENABLE scope=ALL

  mysql-installer Information: 10 : Unexpected response from netsh: 确定。

   mysql-installer Information: 10 : Attempting to create firewall rule with command: netsh.exe  advfirewall firewall add rule name=”Port 3306” protocol=TCP localport=3306 dir=in action=allow

  mysql-installer Information: 10 : Unexpected response from netsh: 下列命令没有找到: advfirewall firewall add rule name=”Port 3306” protocol=TCP localport=3306 dir=in action=allow。

这种情况说明mysql的安装对中文系统支持得不好,不能识别 netsh.exe返回的“确定”信息,继而运行能在其他windows平台上运行的netsh.exe advfirewall命令(该命令xp不支持,所以报找不到该命令的错误。

解决办法有两个: 

①将自己的操作系统的语言设置为英文,然后重新安装mysql  。具体的可以进入控制面板->区域和语言   中去更改;另外,检查当前用户是否有启动防火墙的权限,在计算机服务中查看Application Layer Gateway Service的属性,查看登录选项卡中的用户是否是当前用户。

②检查防火墙端口,如果已经添加成功了,则不作处理,如果没有成功添加,则自己手动在防火墙中添加端口。

四、安装成功之后,只能通过mysql 5.5 command line client 连接localhost的mysql server,而不能通过workbench或其他客户端工具进行远程连接mysql server。关键字:不能远程连接mysql server。可能原因:

①没有开端口,参见前一条解决。

②用户没有授权远程连接。

③mysql server不允许远程连接。

对于②用户没有授权远程连接,可以给用户授权,例如默认的root用户,可以在mysql 5.5 command line client 中输入如下命令:

  //选择数据库

  mysql>use mysql;

  //给用户授权,yourpassword字段用你的密码代替

  mysql>grant all priileges on *.* to   identified by 'yourpassword';

  //刷新系统权限表

  mysql>flush privileges;

  //查看是否授权成功

  mysql> show grants for roots;

如果出现刚刚的授权,则表示成功。不成功的话,自己再添加一个新用户试试,添加用户的命令:

  insert into mysql.user(Host,User,Password,ssl_cipher,x509_issuer,x509_subject) values("%","newuser",password("newpassword"),'','','')

对于③mysql server不允许远程连接的解决办法是,找到自己的my.ini,在[mysqld]下增加一行语句:

  bind-address=0.0.0.0

表示不绑定IP,重启你的Mysql服务。

五、配置文件my.ini的位置MySQL配置向导将my.ini文件放置在MySQL服务器的安装目录中。这将有助于将配置文件和具体的服务器实例相 关联。为了保证MySQL服务器知道到哪里查找my.ini文件,和下面内容类似的参数将会被作为服务安装的一部分 传递给MySQL服务器:--defaults-file="C:/Program Files/MySQL/MySQL Server 5.5/my.ini C:/Program Files/MySQL/MySQL Server 5.5可以被指向MySQL服务器的安装路径所代替。

编辑my.ini文:可以使用文本编辑器打开该文件同时做出必要的编辑和修改。你也可以以MySQL Administrator的应用程序来修 改服务器配置。 MySQL客户端和应用程序,例如mysql命令行客户端和mysqldump并不能确定位于服务器安装目录中的my.ini文件 的位置。为了配置客户端和应用程序,根据你的Windows版本的不同,在C:/Windows下或者在C:/WINNT目录下生 成新的文件my.ini 文件

如果你的MySQL配置向导发现了一个已经存在的my.ini文件,你可以重新配置已经存在的服务器,或者通过删除 my.ini文件、停止并移除MySQL服务的方法移除服务器实例。重新配置已经存在的服务器,选择“重新配置实例”选项并且选择“下一步”按钮。已经存在的my.ini文件被 重新命名为mytimestamp.ini.bak,时间戳是已经存在的my.ini创建时的日期和时间。移除已经存在的数据库实 例,选择“移除实例”选项并选择“下一步”按钮。如果选择了“移除实例”选项,进入到确认界面。单击“运行”按钮:MySQL配置向导停止并开始移除MySQL服 务,并删除my.ini文件。但服务器安装目录并没有移除。如果选择了“重新配置实例”选项,进入到“配置类型”界面,可以选择安装想要配置的安装类型。

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