select  last_load_time, sql_text from v$sql

where module not in ('jsenv.exe','w3wp.exe','SQL Developer')

--and sql_text like '%"Extent1"."ENCOUNTERID"%'

order by last_load_time desc;

select sql_text,last_load_time from v$sql order by last_load_time desc;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and (sql_text like 'select%' or sql_text like 'SELECT%') ORDER BY last_load_time DESC;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and sql_text like 'update%' ORDER BY last_load_time DESC;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and last_load_time like' 2017-6-9%' ORDER BY last_load_time DESC;

select a.username, a.sid,b.SQL_TEXT, b.SQL_FULLTEXT

  from v$session a, v$sqlarea b

where a.sql_address = b.address;

---执行过的
select b.SQL_TEXT,b.FIRST_LOAD_TIME,b.SQL_FULLTEXT,b.FIRST_LOAD_TIME
from v$sqlarea b
where b.FIRST_LOAD_TIME between to_date('2017-06-09 13:24:47','yyyy-mm-dd hh24:mi:ss') and to_date('2017-06-10 13:24:47','yyyy-mm-dd hh24:mi:ss')
order by b.FIRST_LOAD_TIME; 

--（此方法好处可以查看某一时间段执行过的sql，并且 SQL_FULLTEXT 包含了完整的 sql 语句）