select
  CIRCUIT,                                 -- CIRCUIT RAW(8)
  DISPATCHER,                              -- DISPATCHER RAW(8)
  SERVER,                                  -- SERVER RAW(8)
  WAITER,                                  -- WAITER RAW(8)
  SADDR,                                   -- SADDR RAW(8)
  STATUS,                                  -- STATUS VARCHAR2(16)
  QUEUE,                                   -- QUEUE VARCHAR2(16)
  MESSAGE0,                                -- MESSAGE0 NUMBER
  MESSAGE1,                                -- MESSAGE1 NUMBER
  MESSAGE2,                                -- MESSAGE2 NUMBER
  MESSAGE3,                                -- MESSAGE3 NUMBER
  MESSAGES,                                -- MESSAGES NUMBER
  BYTES,                                   -- BYTES NUMBER
  BREAKS,                                  -- BREAKS NUMBER
  PRESENTATION,                            -- PRESENTATION VARCHAR2(257)
  PCIRCUIT                                 -- PCIRCUIT RAW(8)
from
  GV$CIRCUIT
where
  inst_id = USERENV('Instance')