sequence数据迁移

如何从另一台机器上的数据库用户迁移出sequence，以下是我的做法，供参考：

DECLARE
  V_sql   varchar2(1000);
  v_count number(3);
BEGIN
  --dbms_output.enable(100000);
  FOR SEQ IN (SELECT to_char(DBMS_METADATA.GET_DDL@aidm203('SEQUENCE',
                                                           B.SEQUENCE_NAME)) AS seqsql,
                     B.SEQUENCE_NAME as seqname
                FROM USER_SEQUENCES@aidm203 B) LOOP
    --dbms_output.put_line('drop sequence ' || seq.seqname || ';');
    --dbms_output.put_line(replace(seq.seqsql, '"AIDMQUERY".', '') || ';');
    V_sql := replace(seq.seqsql, '"AIDM203".', '');
    select count(1)
      into v_count
      from USER_SEQUENCES
     where SEQUENCE_NAME = seq.seqname;
    if v_count >= 1 then
      execute immediate 'drop sequence ' || seq.seqname;
    end if;
    execute immediate v_sql;
  END LOOP;
END;