エラーが発生しました。

install_driver(mysql) failed: Can't locate DBD/mysql.pm in @INC (@INC contains: /var/www/html/mt-app/plugins/WXRImporter/lib /var/www/html/mt-app/plugins/StyleCatcher/lib /var/www/html/mt-app/plugins/TypePadAntiSpam/lib /var/www/html/mt-app/plugins/feeds-app-lite/lib /var/www/html/mt-app/plugins/AccessCounter/lib /var/www/html/mt-app/plugins/Textile/lib /var/www/html/mt-app/plugins/mixiComment/lib /var/www/html/mt-app/plugins/spamlookup/lib /var/www/html/mt-app/plugins/FacebookCommenters/extlib /var/www/html/mt-app/plugins/FacebookCommenters/lib /var/www/html/mt-app/plugins/MultiBlog/lib /var/www/html/mt-app/plugins/WidgetManager/lib /var/www/html/mt-app/addons/Commercial.pack/lib /var/www/html/mt-app/addons/Community.pack/lib /var/www/html/mt-app/extlib /var/www/html/mt-app/plugins/AccessCounter/lib /var/www/html/mt-app/extlib ../../lib lib /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl /usr/lib/perl5/5.8.8/i386-linux-thread-multi /usr/lib/perl5/5.8.8 .)