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2021年3月22日 (月)

19cの初期化パラメータ数や隠しパラメータ数などどう変化したのか、久々に確認してみた


ORACLE-ORCLCDB@SYS> select banner_full from v$version;

BANNER_FULL
------------------------------------------------------------------------
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0
compute sum label 'Total' of "Num Of Parameters" on report
break on report
WITH cte_params AS
(
SELECT
a.ksppinm
FROM
x$ksppi a JOIN x$ksppcv b
ON a.indx = b.indx
)
SELECT
*
FROM
(
SELECT
'1. Single underscore parameters' AS "CATEGORY"
, COUNT(1) AS "Num Of Parameters"
FROM
cte_params
WHERE
REGEXP_LIKE(ksppinm, '^([_][^_]){1}.*')
UNION
SELECT
'2. Double underscore parameters'
, COUNT(1)
FROM
cte_params
WHERE
REGEXP_LIKE(ksppinm, '^[_]{2}.*')
UNION
SELECT
'3. Non hidden parameters'
, COUNT(1)
FROM
cte_params
WHERE
REGEXP_LIKE(ksppinm, '^[^_].*')
)
ORDER by
category;

カウントした結果は以下のとおり。やはりhidden parameter、かなり増えてますよね。

CATEGORY                        Num Of Parameters
------------------------------- -----------------
1. Single underscore parameters 4934
2. Double underscore parameters 30
3. Non hidden parameters 448
-----------------
Total 5412

経過: 00:00:00.06

20210322-141656

 

ぽかぽか陽気すぎて、海辺でパタパタしたいw

 


Difference of Initialization Parameters between 11g r1 (11.1.0.6.0) and 12c r1 (12.1.0.1.0) - including hidden params
Difference of Initialization Parameters between 11g and 12c #2

 

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