remove Dimensions and Reports to avoid huge upgrade query on DB:

   ALTER TABLE `log_visit` ADD COLUMN `example_visit_dimension` INTEGER(11) DEFAULT 0 NOT NULL, ADD COLUMN `referer_visit_server_date` date default NULL;
   ALTER TABLE `log_conversion` ADD COLUMN `referer_visit_server_date` date default NULL, ADD COLUMN `example_conversion_dimension` INTEGER(11) DEFAULT 0 NOT NULL;
   ALTER TABLE `log_link_visit_action` ADD COLUMN `example_action_dimension` VARCHAR(255) DEFAULT NULL;