有时候我们会忘记DotNetNuke的host密码，这是一件很头疼的事，这时我们可以通过下面这一段SQL Script把host密码重置为一个已知用户的密码（假设这个已知用户名为m2land)。
原理其实很简单，这段Script会把aspnet_membership表中的"m2land"用户的password和password_salt值拷贝并覆盖host对应的值。
使用方法请参考script中的说明。
/*
-- Database Utility ---------------------------------------------------------------------------
Description : Reset a Password in a DotNetNuke database
Author : Tony Tullemans
Date Created : 18.04.2007
Note/s : Before you run this script you must know the UserName and Password of another
registered DNN user in the database you wish to affect.
-----------------------------------------------------------------------------------------------
*/
DECLARE @databaseName VARCHAR(128)
SELECT @databaseName = DB_NAME()
PRINT 'RESET PASSWORD IN DATABASE : ' + @databaseName
PRINT '-----------------------------' + REPLICATE('-', DATALENGTH(@databaseName ));
DECLARE @knownUserName NVARCHAR(128)
DECLARE @lostUserName NVARCHAR(128)
DECLARE @lostUserId NVARCHAR(128)
DECLARE @knownPassword NVARCHAR(128)
DECLARE @knownSalt NVARCHAR(128)
SET @knownUserName = 'm2land'
SET @lostUserName = 'host'
SELECT @knownPassword = Password, @knownSalt = PasswordSalt
FROM aspnet_Membership
INNER JOIN aspnet_users
ON aspnet_Membership.UserId = aspnet_users.UserId
where UserName = @knownUserName;
PRINT ''
PRINT 'Known Password for "' + @knownUserName + '" is : ' + @knownPassword
PRINT 'Known Password Salt for "' + @knownUserName + '" is : ' + @knownSalt
SELECT @lostUserId = aspnet_Membership.UserId
WHERE UserName = @lostUserName;
PRINT 'UserID for "' + @lostUserName + '" is : ' + @lostUserId
IF (DATALENGTH(@lostUserName) <= 0 OR @lostUserName IS NULL)
PRINT 'Invalid Lost User Name ' + @lostUserName
ELSE BEGIN
IF (DATALENGTH(@knownUserName) <= 0 OR @knownUserName IS NULL)
IF (DATALENGTH(@knownPassword) <= 0 OR @knownPassword IS NULL)
PRINT 'Invalid Known Password ' + @knownPassword
IF (DATALENGTH(@knownSalt) <= 0 OR @knownSalt IS NULL)
PRINT 'Invalid Known Salt ' + @knownSalt
PRINT 'BEFORE'
SELECT left(UserName, 12) as UserName, aspnet_Membership.UserId, left(Email, 20) as Email, Password, PasswordSalt
FROM aspnet_Membership INNER JOIN aspnet_users ON aspnet_Membership.UserId = aspnet_users.UserId
WHERE UserName IN ( @knownUserName, @lostUserName );
PRINT 'Changing Password for User Id : "' + @lostUserId + '" to "' + @knownPassword + '"'
UPDATE aspnet_Membership
SET Password = @knownPassword,
PasswordSalt = @knownSalt
-- SELECT UserId, Password, PasswordSalt
-- FROM aspnet_Membership
WHERE UserId = @lostUserId;
PRINT 'AFTER'
END
GO
PRINT ' * * * END OF SCRIPT * * *'
附：还有一个版本的Script,这个版本是直接调用Asp.net的存储过程来修改密码，在我看来更方便，但不知为什么不起作用，望赐教！
SQL Script recovering host password use asp.net store procedure
-------------------------------------------------------------------------------------
Declare @UserName NVarChar(255)
Declare @NewPassword NVarChar(255)
Declare @PasswordSalt NVarChar(128)
Declare @Application NVarChar(255)
-- Enter the user name and new password between ''
-- do not leave any spaces unless intended to do so.
-- Edit only between single quote characters
Set @UserName = 'host' -- This default DNN host user
Set @NewPassword = 'newpassword' --New password
-- Do modify any code below this line
Set @Application = (SELECT [ApplicationID] FROM aspnet_Users WHERE UserName=@UserName)
Set @PasswordSalt = (SELECT PasswordSalt FROM aspnet_Membership WHERE UserID IN (SELECT UserID FROM aspnet_Users WHERE UserName=@UserName))
Exec dbo.aspnet_Membership_ResetPassword @Application, @UserName, @NewPassword, 10, 10, @PasswordSalt, -5
另一个方法：
As there are
frequent requests from users, who lost the password of the host account
(and you cannot request the host password by email), the following
solution will help for all DNN 3 and 4 installation. Please note, that
your need direct access to the database to suceed with the issue:
if "register" is not displayed for the portal, go to
table "Portals" in your database and enter value "2" into
column "Registration".
create a new user account by registration (this time, please remember the password you enter!)
go to database, enter table "ASPNet_Membership"
go
to new user account (usually the last one) and copy the encrypted
values of columns "Password" and "PasswordSalt" into the same columns
of user account "host" (usually th first entry in this table)
login as user "host" using the new password and delete the reshly created other user.
Keep remembering your password ;)