SQL> select  banner
  2    from  v$version
  3  /

BANNER
--------------------------------------------------------------------------------
Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production

SQL> create table xml_test
  2    as
  3      select  xmltype('<x>ABC</x>') col
  4        from  dual
  5  /

Table created.

SQL> 

SQL> select  banner
  2    from  v$version
  3  /

BANNER
--------------------------------------------------------------------------------
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
PL/SQL Release 12.1.0.2.0 - Production
CORE    12.1.0.2.0      Production
TNS for Linux: Version 12.1.0.2.0 - Production
NLSRTL Version 12.1.0.2.0 - Production

SQL> create table xml_test(col xmltype)
  2  /

Table created.

SQL> insert into xml_test select * from xml_test@bid
  2  /
insert into xml_test select * from xml_test@bid
                            *
ERROR at line 1:
ORA-03001: unimplemented feature
ORA-02063: preceding line from BID


SQL>