select
  FILE#,                                   -- FILE# NUMBER
  BLOCK#,                                  -- BLOCK# NUMBER
  BLOCKS,                                  -- BLOCKS NUMBER
  CORRUPTION_CHANGE#,                      -- CORRUPTION_CHANGE# NUMBER
  CORRUPTION_TYPE                          -- CORRUPTION_TYPE VARCHAR2(9)
from
  GV$DATABASE_BLOCK_CORRUPTION
where
  inst_id = USERENV('Instance')