Solution for Mysql to forget the root password and change the root password (Summary), mysqlroot

Solution for Mysql to forget the root password and change the root password (Summary), mysqlroot

One: three methods to change the root password

Method 1: use the set password command

First, log on to MySQL.

Format: mysql> set password for username @ localhost = password ('new password ');

Example: mysql> set password for root @ localhost = password ('20140901 ');

Method 2: Use mysqladmin

Format:mysqladmin -uUsername-p old password New password

Example:mysqladmin -uroot -p123456 password 123

Method 3: Use UPDATE to directly edit the user table

First, log on to MySQL.

mysql> use mysql; mysql> update user set password=password('123') where user='root' and host='localhost'; mysql> flush privileges;

Ii. Solution to forgetting the root password

The procedure is as follows:

1. Disable the running MySQL service -->net stop mysql

2. Open the DOS window and go to the mysql \ bin directory.

3. Inputmysqld --skip-grant-tablesEnter。--skip-grant-tables This means that the permission table authentication is skipped when the MySQL service is started. Note that the skip is preceded by two "-" And the DOS window cannot be entered.

4. Open another DOS window and go to the mysql \ bin directory.

5. Enter mysql and press Enter. If yes, the MySQL prompt> will appear.

6. Connect to the permission Database: use mysql ;.

7. Change the password:

Update user set password = password ("123") where user = "root"; (do not forget the last plus points)

8. Refresh permission (required): flush privileges ;.

9. Exit quit.

10. log out of the system and log on again. Log On with the username root and the new password 123 you just set.

3. Solution to accidental deletion of root users

1. Disable the running MySQL service -->net stop mysql

2. Open the DOS window and go to the mysql \ bin directory.

3. Inputmysqld --skip-grant-tables Enter。--skip-grant-tables This means that the permission table authentication is skipped when the MySQL service is started. Note that the skip is preceded by two "-" And the DOS window cannot be entered.

4. Open another DOS window and go to the mysql \ bin directory.

5. Enter mysql and press Enter. If yes, the MySQL prompt> will appear.

6. Connect to the permission Database: use mysql ;.

7. Insert the root user into the user table:

 mysql> insert into user set user='root',ssl_cipher=''x509_issuer='',x509_subject='';

8. Authorize the New root User:

mysql>update user set Host='localhost',select_priv='y', insert_priv='y',update_priv='y',

Alter_priv='y',delete_priv='y',create_priv='y',drop_priv='y',reload_priv='y',shutdown_priv='y',Process_priv='y',file_priv='y',grant_priv='y',References_priv='y',index_priv='y',create_user_priv='y',show_db_priv='y',super_priv='y',create_tmp_table_priv='y',Lock_tables_priv='y',execute_priv='y',repl_slave_priv='y',repl_client_priv='y',create_view_priv='y',show_view_priv='y',create_routine_priv='y',alter_routine_priv='y',create_user_priv='y' where user='root';

9. exit: mysql> exit; or mysql> quit

10. Restart the service: net start mysql

11. log on to the root user

The above is a small series of solutions for Mysql to forget the root password and change the root password. I hope it will help you. If you have any questions, please leave a message for me, the editor will reply to you in a timely manner. Thank you very much for your support for the help House website!