Merge work:/home/bk/mysql-4.0 into hundin.mysql.fi:/my/bk/mysql-4.0

It means that you are using a wrong password. @xref{Passwords}.

If you have forgot the root password, you can restart @code{mysqld} with

@code{--skip-grant-tables} to change the password. You can find more

about this option later on in this manual section.

@code{--skip-grant-tables} to change the password.

@xref{Resetting permissions}.

If you get the above error even if you haven't specified a password,

this means that you a wrong password in some @code{my.ini}

@item

The minimum length of words to be indexed is defined by the MySQL

variable @code{ft_min_word_length}. @xref{SHOW VARIABLES}.

variable @code{ft_min_word_len}. @xref{SHOW VARIABLES}.

Change it to the value you prefer, and rebuild your @code{FULLTEXT} indexes.

(This variable is only available from MySQL version 4.0.)

@menu

* Crashing::                    What To Do If MySQL Keeps Crashing

* Resetting permissions::       How to Reset a Forgotten Password

* Resetting permissions::       How to Reset a Forgotten Root Password

* Full disk::                   How MySQL Handles a Full Disk

* Temporary files::             Where MySQL Stores Temporary Files

* Problems with mysql.sock::    How to Protect @file{/tmp/mysql.sock} from Being Deleted

@node Resetting permissions, Full disk, Crashing, Administration Issues

@appendixsubsec How to Reset a Forgotten Password

@appendixsubsec How to Reset a Forgotten Root Password

@cindex passwords, forgotten

@cindex passwords, resetting

@cindex root user, password resetting

If you have forgotten the @code{root} user password for MySQL, you

can restore it with the following procedure:

If you never set a @code{root} password for MySQL, then the server will

not require a password at all for connecting as @code{root}. It is

recommended to always set a password for each user. @xref{Security}.

If you have set a @code{root} password, but forgot what it was, you can

set a new password with the following procedure:

@enumerate

@item

Take down the @code{mysqld} server by sending a @code{kill} (not @code{kill

-9}) to the @code{mysqld} server.  The pid is stored in a @file{.pid}

file, which is normally in the MySQL database directory:

@example

kill `cat /mysql-data-directory/hostname.pid`

shell> kill `cat /mysql-data-directory/hostname.pid`

@end example

You must be either the Unix @code{root} user or the same user the server

You must be either the Unix @code{root} user or the same user @code{mysqld}

runs as to do this.

@item

Restart @code{mysqld} with the @code{--skip-grant-tables} option.

@item

Connect to the @code{mysqld} server with @code{mysql -h hostname mysql} and change

the password with a @code{GRANT} command. @xref{GRANT,,@code{GRANT}}.

You can also do this with

@code{mysqladmin -h hostname -u user password 'new password'}

Set a new password with the @code{mysqladmin password} command:

@example

shell> mysqladmin -u root password 'mynewpassword'

@end example

@item

Load the privilege tables with: @code{mysqladmin -h hostname

flush-privileges} or with the SQL command @code{FLUSH PRIVILEGES}.

Now you can either stop @code{mysqld} and restart it normally,

or just load the privilege tables with:

@example

shell> mysqladmin -h hostname flush-privileges

@end example

@item

After this, you should be able to connect using the new password.

@end enumerate

Note that after you started @code{mysqld} with @code{--skip-grant-tables},

any usage of @code{GRANT} commands will give you an @code{Unknown command}

error until you have executed @code{FLUSH PRIVILEGES}.

Alternatively, you can set the new password using the @code{mysql} client:

@enumerate

@item

Take down and restart @code{mysqld} with the @code{--skip-grant-tables}

option as described above.

@item

Connect to the @code{mysqld} server with:

@example

shell> mysql -u root mysql

@end example

@item

Issue the following commands in the @code{mysql} client:

@example

mysql> UPDATE user SET Password=PASSWORD('mynewpassword')

    ->             WHERE User='root';

mysql> FLUSH PRIVILEGES;

@end example

@item

After this, you should be able to connect using the new password.

@item

You can now stop @code{mysqld} and restart it normally.

@end enumerate

@node Full disk, Temporary files, Resetting permissions, Administration Issues