Oracle 最大连接数 Session Process 1. 查看processes和sessions参数SQLgt; show parameter processesprocesses
Oracle 最大连接数 Session Process
1. 查看processes和sessions参数
SQL> show parameter processes
processes integer 50
SQL> show parameter sessions
sessions integer 60
2. 修改processes和sessions值
SQL> alter system set processes=300 scope=spfile;
SQL> alter system set sessions=335 scope=spfile;
注:
.修改processes和sessions值必须重启oracle服务才能生效
.Oracle的连接数(sessions)与其参数文件中的进程数(process)有关,sessions=(1.1*process+5)
3.查询
查询数据库当前进程的连接数:
SQL> select count(*) from v$process;
查看数据库当前会话的连接数:
SQL> select count(*) from v$session;
查看数据库的并发连接数:
SQL> select count(*) from v$session where status='ACTIVE';
查看当前数据库建立的会话情况:
SQL> select sid,serial#,username,program,machine,status from v$session;
查询数据库允许的最大连接数:
SQL> select value from v$parameter where name = 'processes';
SQL> show parameter processes;
查看当前有哪些用户正在使用数据:
SQL> select oSUSEr,a.username,cpu_time/executions/1000000||'s',sql_fulltext,machine from v$session a,v$sqlarea b where a.sql_address = b.address order by cpu_time/executions desc;
备注:UNIX 1个用户session对应一个操作系统process,,而Windows体现在线程。
本文永久更新链接地址:

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

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

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

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

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

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

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]

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


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Dreamweaver Mac version
Visual web development tools

Atom editor mac version download
The most popular open source editor

WebStorm Mac version
Useful JavaScript development tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Notepad++7.3.1
Easy-to-use and free code editor
