转载:http://www.cnblogs.com/nizuimeiabc1/p/9441937.html
1,首先查找表的操作记录
select * from v$sqlarea a where a.SQL_TEXT like '%TB_ACCT_SYSDATE%';
2,从上面的记录中找到update语句对应的sql_id
select * from v$sqltext a,v$sqlarea b where a.SQL_ID=b.SQL_ID and b.SQL_ID in('cq53826tk4u3c','afftnrfhu5utk') order by b.LAST_ACTIVE_TIME desc;
3,从上面的记录中找到最新的sql操作记录,然后找到用户名和主机
select * from sys.v_$session l,sys.v_$sql s where s.SQL_ID='cq53826tk4u3c' and l.USERNAME is not null;