Database Error

Hello,

I just update WordPress to 3.4.2 for my website.
Now when I want to login to my dashboard I get this message:
“Database Update Required
WordPress has been updated! Before we send you on your way, we have to update your database to the newest version.
The update process may take a little while, so please be patient.”

Then I have a button which says “Update WordPress Database” so I click it.

After this I get a new text with errors on my screen:
“WordPress database error: [UPDATE command denied to user ‘U3490541’@’92.61.155.10’ for table ‘wp_options’]
UPDATE wp_options SET option_value = ‘21707’ WHERE option_name = ‘db_version’

WordPress database error: [INSERT,UPDATE command denied to user ‘U3490541’@’92.61.155.10’ for table ‘wp_options’]
INSERT INTO wp_options (option_name, option_value, autoload) VALUES (‘db_upgraded’, ‘1’, ‘yes’) ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload)”

Under this text it says
“Update Complete
Your WordPress database has been successfully updated!”

With a “Continue” button at the end.
If I click on this button then I get back to the screen where it says that I have to upgrade the database…

I think I am in some kind of a loop and I have no idea how to get out of it.
Hopefully there is somebody who knows what this problem is and how I can solve it.

Kind regards.