高级owi与oracle性能调整(第一章中的常用脚本)

原文:http://www.db110.com/?p=1714

my_sess_event.sql:求当前会话的v$session_event视图的结果

view sourceprint?1 select event,total_waits,time_waited from v$session_event 

2  where sid=(select sid from v$mystat where rownum=1) 

3  order by 3 desc;

show_param.sql:显示包括隐含参数在内的参数值

view sourceprint?1 select ksppinm,ksppstvl 

2 from x$ksppi x,x$ksppcv y 

3 where(x.indx=y.indx) 

4 and (translate(ksppinm,'_','#') like '%&1%');

system_event.sql:v$system_event视图上,求整个系统当前等待状况.

view sourceprint?1 select * 

2 from ( 

3         select event,total_waits,time_waited from v$system_event where wait_class <> 'Idle' order by 3 desc

4 ) where rownum <= 100;

sesstat.sql: 求当前会话的v$sesstat视图结果

view sourceprint?1 select n.name,sum(s.value) 

2  from v$sesstat s,v$statname n 

3  where n.name like '%&stat_name%'

4  and s.statistic#=n.statistic# 

5  and s.sid=(select sid from v$mystat where rownum=1) 

6  group by n.name;

undosize.sql: 获得当前事务的undo数据信息

view sourceprint?1 select used_ublk,used_urec from v$transaction t,v$session s 

2  where s.sid=(select sid from v$mystat where rownum=1) 

3  and s.taddr=t.addr;

 

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