转自: http://blog.sina.com.cn/s/blog_91339bff0100vbdc.html
查询sql的历史记录
select * from v\(sqlarea t where t.PARSING_SCHEMA_NAME in ('用户名') order by t.LAST_ACTIVE_TIME desc<br>select * from v\)sqlarea t order by t.LAST_ACTIVE_TIME desc

查看一段时间内的执行情况
select * from v\(sqlarea t where ( to_char(t.LAST_ACTIVE_TIME,'yyyy-mm-dd hh24:mi:ss') > '2011-12-28 14:11:39' ) and (to_char(t.LAST_ACTIVE_TIME,'yyyy-mm-dd hh24:mi:ss') < '2011-12-28 14:11:43') order by t.LAST_ACTIVE_TIME desc</p> <p>查询当前时间</p> <p>select sysdate from dual</p> <p>查询锁表的情况</p> <p>select * from v\)locked_object;
select b.owner,b.object_name,a.session_id,a.locked_mode from v\(locked_object a,dba_objects b where b.object_id = a.object_id;<br>select b.username,b.sid,b.serial#,logon_time from v\)locked_object a,v$session b where a.session_id = b.sid order by b.logon_time;

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