本文目錄一覽:
怎樣徹底刪除MySQL資料庫
一、在控制面板,卸載MySQL的所有組件
控制面板——》所有控制面板項——》程序和功能,卸載所有和MySQL有關的程序
二、找到你的MysQL安裝路徑,看還有沒有和MySQL有關的文件夾,全刪
如果安裝在C盤,檢查一下C:\Program Files (x86)和C:\Program Files 這兩個文件夾
三、刪除關於MySQL的註冊表
在文件資源管理器中輸入「C:\Windows\regedit.exe”會彈出註冊表
刪除HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\MySQL文件夾
如果能找到如下內容,刪除
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\Application\MySQL
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MySQL
四、將以下紅字部分粘貼到文件資源管理器地址欄中 (這是一個隱藏的文件夾)
C:\ProgramData\MySQL
刪除此文件夾下的所有內容
五、重啟電腦
六、提示:
如果以上刪除文件夾時刪除不了,可以試一下以下步驟:
1.檢查是否還有有關MySQL的程序在運行,到任務管理器中去找,然後結束任務
2.試試360粉碎文件能不能粉碎
3.進入安全模式,刪除
大功告成
現在可以重新安裝MySQL了
如何在Windows中完全卸載MySQL資料庫
並且有可能產生其他的問題,最好的辦法是給自己一個空白的環境,這樣我們就可以排除MySQL安裝不成功造成的錯誤。
具體卸載步驟如下:
1.
在你從電腦里卸載舊的MYSQL資料庫服務時,首先先在WINDOWS服務里停掉MYSQL的服務。
2.
再到控制面板里的增加刪除程序內進行刪除。
3.
但是你並不能完整的把MYSQL服務刪除,那麼就要在註冊表裡(regedit)清除你的MYSQL服務。這裡有幾個地方:
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Application/MySQL
目錄刪除;
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Application/MySQL
目錄刪除;
如何完全卸載MySQL資料庫
您好,首先要有:1、資料庫:MySQL 5.7
2、安裝包:mysql-installer-community-5.7.4.0-m14.1411728256.msi
之後就可以這樣:
1、雙擊MySQL資料庫的.msi安裝文件,進入MySQL安裝界面。
2、在MySQL安裝界面,點擊”Remove MySQL Products”(卸載MySQL產品)。
3、在卸載產品界面,單擊”Execute”(執行)。
4、彈出是否確認刪除窗口,單擊”是(Y)”。等待MySQL待卸載產品準備就緒後單擊”Next”。
5、進入清空現有數據界面,勾選”uninstall the mysql installer”(卸載MySQL安裝程序),單擊”Finish”完成MySQL資料庫的完全卸載。
如何刪除mysql資料庫
1、找到mysql安裝所在的文件夾,將mysql的配置文件my.ini備份一下。
2、刪除mysql安裝所在的文件夾
3、打開我的電腦
4、找到programdata
5、打開programdata並找到mysql文件夾並將其刪除
6、如果找不到programdata或mysql文件夾,可以在工具欄中找到工具選項
7、在工具選項卡中找到查看文件夾,並將「顯示隱藏文件夾、文件」選中保存即可
8、找到Mysql文件後將其刪除即可。
centos中怎麼刪除mysql資料庫
查看已經安裝的服務
rpm –qa|grep -i mysql
-i 作用是不區分大小寫
yum remove mysql mysql-server mysql-libs compat-mysql51
rm -rf /var/lib/mysql
rm /etc/my.cnf
查看是否還有mysql軟體:
rpm -qa|grep mysql
有的話繼續刪除
可以看到有兩個安裝包
MySQL-server-5.6.19-1.linux_glibc2.5.x86_64.rpm
MySQL-client-5.6.19-1.linux_glibc2.5.x86_64.rpm
刪除這兩個服務(去掉後綴)
rpm –e MySQL-client-5.6.19-1.linux_glibc2.5.x86_64
rpm -e MySQL-server-5.6.19-1.linux_glibc2.5.x86_64
查看殘留的目錄:
whereis mysql
然後刪除mysql目錄:
rm –rf /usr/lib64/mysql
刪除相關文件:
rm –rf /usr/my.cnf
rm -rf /root/.mysql_sercret
最關鍵的:
rm -rf /var/lib/mysql
如果這個目錄如果不刪除,再重新安裝之後,密碼還是之前的密碼,不會重新初始化!
網上查了很久都沒有文章提到這個,最後還是自己摸索找出來的。
卸載完成!怎麼確定是不是真的卸載乾淨了呢?
一是看安裝輸出:
如果沒有卸載乾淨,安裝server時輸入只有兩行:
[root @localhost opt]# rpm -ivh MySQL-server-5.6.19-1.linux_glibc2.5.x86_64.rpm
Preparing… ########################################### [100%]
1:MySQL-server ########################################### [100%]
卸載乾淨了安裝輸入如下:
[root @localhost opt]# rpm -ivh MySQL-server-5.6.19-1.linux_glibc2.5.x86_64.rpm
Preparing… ########################################### [100%]
1:MySQL-server ########################################### [100%]
2014-09-23 07:22:43 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server option (see documentation for more details).
2014-09-23 07:22:43 26041 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-09-23 07:22:43 26041 [Note] InnoDB: The InnoDB memory heap is disabled
2014-09-23 07:22:43 26041 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-09-23 07:22:43 26041 [Note] InnoDB: Compressed tables use zlib 1.2.3
2014-09-23 07:22:43 26041 [Note] InnoDB: Using Linux native AIO
2014-09-23 07:22:43 26041 [Note] InnoDB: Using CPU crc32 instructions
2014-09-23 07:22:43 26041 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2014-09-23 07:22:43 26041 [Note] InnoDB: Completed initialization of buffer pool
2014-09-23 07:22:43 26041 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2014-09-23 07:22:43 26041 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2014-09-23 07:22:43 26041 [Note] InnoDB: Database physically writes the file full: wait…
2014-09-23 07:22:43 26041 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
2014-09-23 07:22:43 26041 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
2014-09-23 07:22:45 26041 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2014-09-23 07:22:45 26041 [Warning] InnoDB: New log files created, LSN=45781
2014-09-23 07:22:45 26041 [Note] InnoDB: Doublewrite buffer not found: creating new
2014-09-23 07:22:45 26041 [Note] InnoDB: Doublewrite buffer created
2014-09-23 07:22:45 26041 [Note] InnoDB: 128 rollback segment(s) are active.
2014-09-23 07:22:45 26041 [Warning] InnoDB: Creating foreign key constraint system tables.
2014-09-23 07:22:45 26041 [Note] InnoDB: Foreign key constraint system tables created
2014-09-23 07:22:45 26041 [Note] InnoDB: Creating tablespace and datafile system tables.
2014-09-23 07:22:45 26041 [Note] InnoDB: Tablespace and datafile system tables created.
2014-09-23 07:22:45 26041 [Note] InnoDB: Waiting for purge to start
2014-09-23 07:22:45 26041 [Note] InnoDB: 5.6.19 started; log sequence number 0
A random root password has been set. You will find it in ‘/root/.mysql_secret’.
2014-09-23 07:22:46 26041 [Note] Binlog end
2014-09-23 07:22:46 26041 [Note] InnoDB: FTS optimize thread exiting.
2014-09-23 07:22:46 26041 [Note] InnoDB: Starting shutdown…
2014-09-23 07:22:48 26041 [Note] InnoDB: Shutdown completed; log sequence number 1625977
2014-09-23 07:22:48 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server option (see documentation for more details).
2014-09-23 07:22:48 26065 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-09-23 07:22:48 26065 [Note] InnoDB: The InnoDB memory heap is disabled
2014-09-23 07:22:48 26065 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-09-23 07:22:48 26065 [Note] InnoDB: Compressed tables use zlib 1.2.3
2014-09-23 07:22:48 26065 [Note] InnoDB: Using Linux native AIO
2014-09-23 07:22:48 26065 [Note] InnoDB: Using CPU crc32 instructions
2014-09-23 07:22:48 26065 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2014-09-23 07:22:48 26065 [Note] InnoDB: Completed initialization of buffer pool
2014-09-23 07:22:48 26065 [Note] InnoDB: Highest supported file format is Barracuda.
2014-09-23 07:22:48 26065 [Note] InnoDB: 128 rollback segment(s) are active.
2014-09-23 07:22:48 26065 [Note] InnoDB: Waiting for purge to start
2014-09-23 07:22:48 26065 [Note] InnoDB: 5.6.19 started; log sequence number 1625977
2014-09-23 07:22:48 26065 [Note] Binlog end
2014-09-23 07:22:48 26065 [Note] InnoDB: FTS optimize thread exiting.
2014-09-23 07:22:48 26065 [Note] InnoDB: Starting shutdown…
2014-09-23 07:22:50 26065 [Note] InnoDB: Shutdown completed; log sequence number 1625987
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in ‘/root/.mysql_secret’.
You must change that password on your first connect,
no other statement but ‘SET PASSWORD’ will be accepted.
See the manual for the semantics of the ‘password expired’ flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
/usr/bin/mysql_secure_installation
which will also give you the option of removing the test database.
This is strongly recommended for production servers.
See the manual for more instructions.
Please report any problems at
The latest information about MySQL is available on the web at
Support MySQL by buying support/licenses at
New default config file was created as /usr/my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settings
最後一段中提示了重要信息,很多人因為不喜歡讀英文,導致接下來不知道怎麼操作!
二就是安裝完成,啟動服務之後
使用命令:「mysql -uroot -p」輸入你之前安裝後設置的密碼,看能不能登錄,如果還可以登錄,說明沒有卸載乾淨!
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