select
  FILE_ID,                                 -- FILE_ID NUMBER
  DATA_OBJECT_ID,                          -- DATA_OBJECT_ID NUMBER
  GC_MASTERING_POLICY,                     -- GC_MASTERING_POLICY VARCHAR2(11)
  CURRENT_MASTER,                          -- CURRENT_MASTER NUMBER
  PREVIOUS_MASTER,                         -- PREVIOUS_MASTER NUMBER
  REMASTER_CNT                             -- REMASTER_CNT NUMBER
from
  GV$GCSPFMASTER_INFO
where
  inst_id = USERENV('Instance')