单独导出sequences

create table ddl_scripts(
object_name varchar2(50),
object_type varchar2(30),
text varchar2(4000));

declare
a1 varchar2(32767);
str varchar2(32767);
n1 number;
BEGIN
for c1 IN(select sequence_name from user_sequences order by 1) LOOP
        select DBMS_LOB.SUBSTR(dbms_metadata.get_ddl('SEQUENCE', c1.sequence_name), 32767,1) INTO a1 from dual;
        insert into ddl_scripts values(c1.sequence_name, 'SEQUENCE', a1);
END LOOP;
END;

/

执行语句 ： SELECT TEXT FROM DDL_SCRIPTS;