Search notes:

Oracle: X$KQFTA

x$kqfta (kernel query fixed-view table) shows the names of the fixed tables.
select
   tab.kqftanam      x_table,
   fob.flags         fob_flabgs,
   fob.timestamp  - date '1991-01-01'  same_as_kqftaver,
   tab.kqftaver,
   tab.kqftatyp,
   tab.kqftaflg,
   tab.kqftacoc,
   opt.kqfoptflags,
   tab.kqftarsz,   
   tab.kqftaobj,
   count(*) over (partition by tab.kqftanam) c
from
   x$kqfta    tab                                 left join
   x$kqfopt   opt on tab.kqftaobj = opt.kqfoptobj left join
   fixed_obj$ fob on tab.kqftaobj = fob.obj#
order by
   c desc,
   x_table;

See also

fixed tables

Index