can not use complex map for non-empty table

  Explanation:  You specified a storage map for a table which  has
  data  in it, however, the storage map was not a simple map.  You
  may only specify a simple map  when  the  table  contains  data.
  This  map  simply  describes  the  state of the currently stored
  data.  Once defined the ALTER STORAGE MAP statement can be  used
  to apply a more complex mapping to the table.

  User Action:  Redefine the  storage  map  and  ensure  that  the
  storage  map specifies only the default storage area, that there
  is no PLACEMENT  VIA  INDEX  clause,  that  the  thresholds  and
  compression  attributes  are not specified, and that the COLUMNS
  clause is not used to vertically partition the table.