Domain <str> cannot be exported WITH NO EXTENSIONS

  Explanation:  This domain cannot be exported when NO EXTENSIONS
  is specified.  It is of a data type which was not supported
  before Rdb 4.1 in any fashion.  The secondary message will
  describe exactly which data type was used.

  User Action:  If the interchange file will not be used to create
  a database in prior versions of Oracle Rdb, Oracle Rdb
  Engineering would recommend restarting the EXPORT specifying
  WITH EXTENSIONS.  Otherwise, change the affected domain to a
  type which was supported in earlier versions or remove it
  entirely.