Scripts:查询所有参数修改信息的脚本parm_mods.sql

-- parm_mods.sql

--

-- Shows all parameters (including hidden) that have been modified. 

-- Uses the lag function so that a single record is returned for each change.

-- It uses AWR data - so only snapshots still in the database will be included.

--

-- The script prompts for a parameter name (which can be wild carded).

-- Leaving the parameter name blank matches any parameter (i.e. it will show all changes).

-- Calculated hidden parameters (those that start with two underscores like "__shared_pool_size") 

-- will not be displayed unless requested with a Y.

--

-- Kerry Osborne

--

-- Note: I got this idea from Jeff White.

--

set linesize 155

col time for a15

col parameter_name format a50

col old_value format a30

col new_value format a30

break on instance skip 3

select instance_number instance, snap_id, time, parameter_name, old_value, new_value from (

select a.snap_id,to_char(end_interval_time,'DD-MON-YY HH24:MI') TIME,  a.instance_number, parameter_name, value new_value, 

lag(parameter_name,1) over (partition by parameter_name, a.instance_number order by a.snap_id) old_pname,

lag(value,1) over (partition by parameter_name, a.instance_number  order by a.snap_id) old_value ,

decode(substr(parameter_name,1,2),'__',2,1) calc_flag

from dba_hist_parameter a, dba_Hist_snapshot b , v$instance v

where a.snap_id=b.snap_id 

and a.instance_number=b.instance_number

and parameter_name like nvl('¶meter_name',parameter_name)

and a.instance_number like nvl('&instance_number',v.instance_number)

) 

where 

new_value != old_value

and calc_flag not in (decode('&show_calculated','Y',3,2))

order by 1,2

/