The only way to install Apache::Session::DBI is to install old version of Apache::Session. Maybe your installation is just screwed because you have installed old Apache::Session over new? And those tutorials are outdated: if you want to store sessions in MySQL you should use Apache::Session::MySQL (other databases are supported with other Apache::Session modules).

Your code for Apache::Session::MySQL looks ok (assuming that you have use Apache::Session::MySQL).

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Ilya Martynov (http://martynov.org/)