Modificaciones DML y Estadísticas

select table_name, partition_name, inserts, updates,deletes, timestamp
from DBA_TAB_MODIFICATIONS
where table_name in
('Tabla1',
'Tabla2',
'Tabla3');

Última modificación DML en una tabla

select
owner,
table_name,
last_analyzed
from dba_tables
where table_name='TABLA';