search
HomeDatabaseMysql TutorialOracle 11g show spparameter 命令的使用

当我们要获取Oracle数据库当前的参数值时,可以通过查询v$parameter动态性能视图得到,当然了也可以使用show parameter p_name这

当我们要获取Oracle数据库当前的参数值时,可以通过查询v$parameter动态性能视图得到,当然了也可以使用show parameter p_name这样的方式得到。但是在Oracle 11g以前,show parameter只能获得当前session的参数值,要看其他的参数值,比如系统级别的参数值修改和参数文件spfile中的参数值还是需要使用数据字典。Oracle在11g中做了一些改动,引入了show spparameter p_name命令,可以我们更方便的获取spfile文件中的参数值,显然这只是一个小技巧,,但是确实让Oracle更加灵活和方便使用。

SQL> show parameter open_cursors
NAME  TYPE  VALUE
------------------------------------ ----------- ------------------------------
open_cursors  integer  400

我们只是修改参数文件,加上scope=spfile
SQL> alter system set open_cursors=300 scope=spfile;
System altered.

如果要查看参数的值,看当前session的
SQL> show parameter open_cursors

NAME  TYPE  VALUE
------------------------------------ ----------- ------------------------------
open_cursors  integer  400

SQL> desc v$parameter
Name  Null?  Type
----------------------------------------- -------- ----------------------------
NUM  NUMBER
NAME  VARCHAR2(80)
TYPE  NUMBER
VALUE  VARCHAR2(4000)
DISPLAY_VALUE  VARCHAR2(4000)
ISDEFAULT  VARCHAR2(9)
ISSES_MODIFIABLE  VARCHAR2(5)
ISSYS_MODIFIABLE  VARCHAR2(9)
ISINSTANCE_MODIFIABLE  VARCHAR2(5)
ISMODIFIED  VARCHAR2(10)
ISADJUSTED  VARCHAR2(5)
ISDEPRECATED  VARCHAR2(5)
ISBASIC  VARCHAR2(5)
DESCRIPTION  VARCHAR2(255)
UPDATE_COMMENT  VARCHAR2(255)
HASH  NUMBER

SQL> select name,value from v$parameter where;

NAME  VALUE
--------------- ---------------------------------------------
open_cursors  400

如果想要看参数的修改后参数文件里的值
SQL> desc v$spparameter
Name  Null?  Type
----------------------------------------- -------- ----------------------------
SID  VARCHAR2(80)
NAME  VARCHAR2(80)
TYPE  VARCHAR2(11)
VALUE  VARCHAR2(255)
DISPLAY_VALUE  VARCHAR2(255)
ISSPECIFIED  VARCHAR2(6)
ORDINAL  NUMBER
UPDATE_COMMENT  VARCHAR2(255)

SQL> col name for a15
SQL> col value for a45

SQL> select name,value from v$spparameter where;

NAME  VALUE
--------------- ---------------------------------------------
open_cursors  300

SQL> show spparameter open_cursors

SID  NAME  TYPE  VALUE
-------- ----------------------------- ----------- ----------------------------
*  open_cursors  integer  300

显然,有了show spparameter ,操作更简单一些。

本文永久更新链接地址

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Reduce the use of MySQL memory in DockerReduce the use of MySQL memory in DockerMar 04, 2025 pm 03:52 PM

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

How to solve the problem of mysql cannot open shared libraryHow to solve the problem of mysql cannot open shared libraryMar 04, 2025 pm 04:01 PM

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

How do you alter a table in MySQL using the ALTER TABLE statement?How do you alter a table in MySQL using the ALTER TABLE statement?Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Run MySQl in Linux (with/without podman container with phpmyadmin)Run MySQl in Linux (with/without podman container with phpmyadmin)Mar 04, 2025 pm 03:54 PM

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

What is SQLite? Comprehensive overviewWhat is SQLite? Comprehensive overviewMar 04, 2025 pm 03:55 PM

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Running multiple MySQL versions on MacOS: A step-by-step guideRunning multiple MySQL versions on MacOS: A step-by-step guideMar 04, 2025 pm 03:49 PM

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

How do I configure SSL/TLS encryption for MySQL connections?How do I configure SSL/TLS encryption for MySQL connections?Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software