select
  inst_id,                                 -- INST_ID NUMBER
  id,                                      -- ID NUMBER
  svrname,                                 -- SVRNAME VARCHAR2(255)
  dirname,                                 -- DIRNAME VARCHAR2(1024)
  mntport,                                 -- MNTPORT NUMBER
  nfsport,                                 -- NFSPORT NUMBER
  wtmax,                                   -- WTMAX NUMBER
  rtmax                                    -- RTMAX NUMBER
from
  x$dnfs_servers