导出建sequence的语句即可起到备份的作用

select 'create sequence '||sequence_name||
       ' minvalue '||min_value||
       ' maxvalue '||max_value||
       ' start with '||last_number||
       ' increment by '||increment_by||
       (case when cache_size=0 then ' nocache' else ' cache '||cache_size end) ||';'
from dba_sequences where sequence_owner='ZA3607'