1   declare v_cursor integer;
   2   begin
   3     v_cursor := dbms_sql.open_cursor;
   4     dbms_sql.parse(v_cursor, 'begin XXX; end;', dbms_sql.v7);
   5     dbms_sql.close_cursor(v_cursor);
   6   exception when others then
   7     if dbms_sql.is_open(v_cursor) then dbms_sql.close_cursor(v_cursor); end if;
   8     raise;
   9 * end;
sql> /
declare v_cursor integer;
*
ERROR at line  1 :
ORA- 06550 : line  1 , column  7 :
PLS- 00201 : identifier 'XXX' must be declared
ORA- 06550 : line  1 , column  7 :
PL/SQL: Statement ignored
ORA- 06512 : at line  8 

   1   declare v_cursor integer;
   2   begin
   3     v_cursor := dbms_sql.open_cursor;
   4     dbms_sql.parse(v_cursor, 'begin :x:=1; XXX; end;', dbms_sql.v7);
   5     dbms_sql.close_cursor(v_cursor);
   6   exception when others then
   7     if dbms_sql.is_open(v_cursor) then dbms_sql.close_cursor(v_cursor); end if;
   8     raise;
   9 * end;
sql> /

PL/SQL procedure successfully completed.