Calcul de la taille des objets Taille de chaque objet 1 2 3 SELECT sum(bytes)/1048576 Megs, segment_name FROM user_extents GROUP BY segment_name Espace global occupé par les tables 1 2 3 4 SELECT sum(bytes)/1048576 Megs, segment_type FROM user_extents WHERE segment_type = 'TABLE' GROUP BY segment_type Espace global occupé par les index 1 2 3 4 SELECT sum(bytes)/1048576 Megs, segment_type FROM user_extents WHERE segment_type = 'INDEX' GROUP BY segment_type