Redmine

hi there,

I want to connect to redmineserver/svn/repository.
It shows me a login windows which looks like the one of basic authentication.
In My redmine.conf if got the following line:

AuthType Basic
AuthName "Subversion repository"
Require valid-user

PerlAccessHandler Apache::Authn::Redmine::access_handler
    PerlAuthenHandler Apache::Authn::Redmine::authen_handler

which means to me that basic authentication is used with the redmine access handler.
If this is so ist schould work with one of the redmine user? but it doesnt.
What user database is used there?