scn 时间时间:2023-03-09 03:01:16 Scn转换成时间: select to_char(scn_to_timestamp(3998591352171),'YYYY-MM-DD HH24:MI:SS') from dual; 时间转换成scn: select timestamp_to_scn(to_date('2011-04-14 11:10:25','YYYY-MM-DD HH24:MI:SS')) from dual