GV$BUFFER_POOL

select
inst_id,                 -- INST_ID NUMBER
bp_id,                   -- ID NUMBER
bp_name,                 -- NAME VARCHAR2(20)
bp_lo_sid,               -- LO_SETID NUMBER
bp_hi_sid,               -- HI_SETID NUMBER
bp_set_ct,               -- SET_COUNT NUMBER
bp_size,                 -- BUFFERS NUMBER
0,                       -- LO_BNUM NUMBER
0                        -- HI_BNUM NUMBER
from
x$kcbwbpd 
where
bp_id > 0
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