在源库上建立view log，由于没有主键，只能靠rowid
create materialized view log on t_dns_cache_detection with rowid;

下来再远程库建立
create materialized view t_dns_cache_detection on prebuilt table refresh fast with rowid start with sysdate next sysdate+1 as select * from t_dns_cache_detection@botnet863_win