apex call duration
SELECT ELAPSED_TIME, numtodsinterval(ELAPSED_TIME, 'second') IV,
extract(MINUTE FROM numtodsinterval(ELAPSED_TIME, 'second')) MI,
extract(SECOND FROM numtodsinterval(ELAPSED_TIME, 'second')) SS
FROM APEX_WORKSPACE_ACTIVITY_LOG
WHERE WORKSPACE = 'wks_name'
AND APEX_USER = 'user_name'
AND APPLICATION_ID = 'app_id';