select a.value as all_bytes, b.value as saved_bytes

from ( select sum(value) as value from gv$sysstat where name like ‘cell physical IO interconnect bytes’) a,

       ( select sum(value) as value from gv$sysstat where name like ‘cell physical IO bytes saved by storage index’) b ;

 

ALL_BYTES                               SAVED_BYTES

71,236,249,253,864                    671,241,273,344