MySQL FAQs
MySQL always crashes
First, you should try to find out whether the problem MySQLd daemon is dead or whether your problem is related to your customer. You can use MySQLadmin version to check how long your MySQLd server has been running normally. if MySQLd is dead, you can go to the file "MySQL-data-directory/'hostname '. find the cause in err.
Some common errors when using MySQL
The common cause of MySQL server has gone away is that the
This article describes how to use mysqladmin to check the running status of MySQL, including the simple awk usage of mysqladmin. For more information, see mysqladmin as an important MySQL client, the most common is to use it to shut down the database. In addition, this command can also understand the MySQL running status, process information, and process killing.
Several methods to crack the root password of a MySQL database:
Method 1
Use phpmyadmin, which is the simplest. modify the user table of the mysql database, but do not forget to use the PASSWORD function.
Method 2
Use mysqladmin, which is a special case stated above.
Mysqladmin-u root-p password mypasswd
After entering this command, you need to enter the original root password, and then the root password w
= 'root ';(Note: you do not need to use the mysqladmin-u root-P password 'your new password' command to change the password, because 'skip-grant-tables 'is configured,If you don't believe it, you can try it out. It will certainly report the following error:F: \ Documents and Settings \ long gt; mysqladmin-u root-ppassword 'root'Enter password:Warning: single quotes were not trimmed from the password by yo
About How to modify the MySQL tutorial root password We have listed a lot of changes on the mysql password , okay crap don't say much more we look at these days to modify the root password effective means and methods.Method One
Using the PHP tutorial MyAdmin, this is the easiest, to modify the MySQL library's user table, but don't forget to use the password function. Www.111cn.net
Method Two Www.111cn.net
Using Mysqladmin, this is a special case of
Several ways to hack the MySQL root password on the Internet: Method One uses phpMyAdmin, which is easiest to modify the user table in the MySQL library, but don't forget to use the password function. Method Two uses Mysqladmin, which is a special case of the previous declaration. mysqladmin-u root-p Password mypasswd When you enter this command, you need to enter the original password for root, and t
/mysqladmin-u root-p Password "123456" #提示再次输入密码: 123456
or modify the password by executing the following command:
Mysql-u root-p #进入mysql控制台
Use MySQL #切换到mysql数据库
Update user set Password=password ("123456") where user= ' root '; #修改root密码为123456
FLUSH privileges; #刷新系统授权表
Exit #退出mysql控制台
Mysql-u Root-p #重启进入mysql控制台, prompted to enter password 123456 login success!
You can al
FAQ Gallery
MySQL always crashes
First you should try to figure out whether the mysqld daemon is dead or if your problem is related to your customer. You can use Mysqladmin version to check how long your mysqld server is performing properly, and if Mysqld is dead, you can find the reason in file "mysql-data-directory/' hostname '. Err".
Some common errors when using MySQL
MySQL server has gone away
A common cause is that the server timed out and
you connect to MySQL, you can disable name completion-a--no-auto-rehash--disable-auto-rehash under the MySQL client, use the following command to turn on the name of the newly created object \# Rehashmysql output Format Options # mysql--html or-hproduce output in HTML format--xml or-xproduce output in XML format get server-side commands help keyword more detailed help information in the URL provided below mysqladmin1) create database_name
# mysq
As for how to modify the mysql root Password, we have listed a lot of changes to the mysql password. Let's take a look at the effective methods and methods to change the root password over the past few days.
AboutHow to modify the mysql root PasswordWe listed a lotMysql passwordLet's take a look at the effective methods and methods to change the root password over the past few days.Method 1
Using the php tutorial myadmin, This is the simplest. Modify the user table of the mysql database, but do
How to modify and crack MYSQL passwords
Method 1Use phpmyadmin, which is the simplest. modify the user table of the mysql database, but do not forget to use the PASSWORD function.
Method 2
Use mysqladmin, which is a special case stated above.
Mysqladmin-u root-p password mypasswd
After entering this command, you need to enter the original root password, and then the root password will be changed to mypassw
If the MySQLKillsleep process is idle, study it slowly...
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Mysql> SELECT concat ('Kill ', id,'; ') FROM information_schema.processlist WHERE user = 'root' INTO outfile'/tmp/a.txt'; Query OK, 2 rows affected (0.00 sec) mysql> source/tmp/a.txt; Query OK, 0 rows affected (0.00 sec)
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#! /Bin/bash
# While ["2"-gt "1"]
# Do
Log_command = 'mysqladm
When mysql is installed, the mysqladminpassword 'password' Command reports an error. when mysql is installed, the mysqladminpassword 'password' Command reports an error-bash: mysqladmin: commandnotfoundlocatemysqladmin error-bash: mysq mysql installation mysqladmin password 'password'
When mysql is installed, the mysqladmin password 'password' command reports an
Method One
Using phpMyAdmin, this is the easiest, to modify the MySQL library's user table, but don't forget to use the password function.
Method Two
Using Mysqladmin, this is a special case of the previous declaration.
Mysqladmin-u root-p Password mypasswd
After entering this command, you need to enter the original password for root, and then the root password will be changed to MYPASSWD.
Change the
2.1mysql client commands what are the?1.mysql ---Used to connect to the database---Send the user's SQL statements to the server 2.mysqladmin---the command-line administration tool 3. mysqldump---Back up the contents of the Database and table 2.2mysql command features:1. User connection database 2. for managing Database 2.2.1mysql Command Interface features: Command command description \h help or ? get help \G formatted output (row to column) \T or
then reconnect, the service has officially started, then run a test shell command to see if the server is functioning properly.-Use Mysqladmin to verify that the server is running.shell> bin/mysqladmin versionshell> bin/mysqladmin variablesIf you cannot connect to the server, specify the-u root option to connect as root. If you have already assigned a password t
need to rebuild.2.2 Check your table at startupIn addition to scheduling your server to boot at system boot, you may want to install the MYISAMCHK and Isamchk scripts to check your tables before the server starts. You may restart after a crash, it is possible that the table has been compromised, and checking it before booting is a good way to find the problem.Third, stop the serverTo start the server manually, use Mysqladmin: %
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