Le paramètre heat_map permet un suivi de l'activité.
SQL> show parameter heat_
29-SEP-16 Report of Table Rebuild Candidates
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
heat_map string OFF
SQL> alter system set heat_map=on;
System altered.
SQL> sho parameter heat_
29-SEP-16 Report of Table Rebuild Candidates
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
heat_map string ON