Oracle Hidden Parameters Report
This script displays one or all hidden (underscore) Oracle initialization parameters. It queries internal X$ tables to show parameter names, descriptions, session values, and instance values, helping advanced DBAs inspect undocumented configuration settings used for diagnostics and tuning.
oraclesqlperformance-tuningv1.0.0
0 stars0 downloads22 views0 comments
By OracleDba • Created
Code
(26 lines)1234567891011121314151617181920212223242526
-- -----------------------------------------------------------------------------------
-- File Name : http://www.oracle-base.com/dba/monitoring/hidden_parameters.sql
-- Author : DR Timothy S Hall
-- Description : Displays a list of one or all the hidden parameters.
-- Requirements : Access to the v$ views.
-- Call Syntax : @hidden_parameters (parameter-name or all)
-- Last Modified: 28-NOV-2006
-- -----------------------------------------------------------------------------------
SET VERIFY OFF
COLUMN parameter FORMAT a37
COLUMN description FORMAT a30 WORD_WRAPPED
COLUMN session_value FORMAT a10
COLUMN instance_value FORMAT a10
SELECT a.ksppinm AS parameter,
a.ksppdesc AS description,
b.ksppstvl AS session_value,
c.ksppstvl AS instance_value
FROM x$ksppi a,
x$ksppcv b,
x$ksppsv c
WHERE a.indx = b.indx
AND a.indx = c.indx
AND a.ksppinm LIKE '/_%' ESCAPE '/'
AND a.ksppinm = DECODE(LOWER('&1'), 'all', a.ksppinm, LOWER('&1'))
ORDER BY a.ksppinm;