Oracle数据库安装图解和基本命令行的使用
Oracle数据库安装图解和基本命令行的使用 一、Oracle数据库安装 1. 下载oracle数据库软件 2. 解压win32_11gR1_database.Zip安装包,如图1所示: 图 1 3. 点击setup.exe,选择安装,进入以下图2 图 2 4. 如果上面一步不能跳转到图3,那么需要先关闭安装软件,
Oracle数据库安装图解和基本命令行的使用
一、Oracle数据库安装
1. 下载oracle数据库软件
2. 解压win32_11gR1_database.Zip安装包,如图1所示:
图 1
3. 点击setup.exe,选择安装,进入以下图2
图 2
4. 如果上面一步不能跳转到图3,那么需要先关闭安装软件,然后关闭电脑的防火墙,再继续安装。
图 3
这里选择默认安装路径,全局数据库名为:orcl
数据库口令为:intlgj
5. 点击下一步,如果出现图4的情况,点击4,或先删除安装目录下的所有的文件,,再点击选择“是”,进入下一步:
图 4
这些先决条件不用管,继续进入下一步图6 图6 点击“安装”就进入安装程序阶段 图 7 6. 安装 成功 后,还要进行解锁,如图8 图8 系统管理员:sys supermanager 普通管理员:system manager 用户:scott intlgj 7. 安
这些先决条件不用管,继续进入下一步图6
图6
点击“安装”就进入安装程序阶段
图 7
6. 安装成功后,还要进行解锁,如图8
图8
系统管理员:sys supermanager
普通管理员:system manager
用户:scott intlgj
7. 安装成功
图 9
8. 完成之后,直接选择“退出”即可,此时,会启动一个EM(企业管理器)的工具,但在学习中基本没使用这种前台,所以直接关闭即可。
Oracle安装成功后实际会在系统中进行服务的注册,在注册服务中,以下两个服务必须要启动,否则Oracle无法正常运行。
图 10
OracleOraDb11g_home1TNSListener:表示监听服务,如果客户端要连接数据库,此服务必须打开,在日后的开发程序中此服务起作用。
OracleServiceORCL:此服务为Oracle 的主服务,命名规则:OracleService+数据库名称;
之后可以通过命令行方式进入SQLPlus的控制中心,进行命令的输入。
二、Oracle数据库的基本命令行的使用
2.1. SQLPlus
SQLPlus是Oracle提供的一个命令执行的工具软件,安装后会自动在系统中注进行注册。
SQLplus有两种命令:
.sqlplus以命令行方式进入数据库连接,如图11:
图 11
. sqlplusw:以窗口形式启动命令行工具:不过Oracle 11g没有提供该服务。
连接数据库以后,我们就可以进行查询等操作:
在数据库中存在多张表,每张表都有记录:
现在输入以下的命令:
SELECT * FROM EMP;
图 12
原本一行显示的数据二没有按照一行显示,所以显示的格式有点混乱,这就需要我们设置每一行的显示的长度:
设置显示每一行的长度:
Set linesize 300
图13
设置显示每一页的显示的行数:
Set pagesize 30
图 14

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

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

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The retention period of Oracle database logs depends on the log type and configuration, including: Redo logs: determined by the maximum size configured with the "LOG_ARCHIVE_DEST" parameter. Archived redo logs: Determined by the maximum size configured by the "DB_RECOVERY_FILE_DEST_SIZE" parameter. Online redo logs: not archived, lost when the database is restarted, and the retention period is consistent with the instance running time. Audit log: Configured by the "AUDIT_TRAIL" parameter, retained for 30 days by default.

The amount of memory required by Oracle depends on database size, activity level, and required performance level: for storing data buffers, index buffers, executing SQL statements, and managing the data dictionary cache. The exact amount is affected by database size, activity level, and required performance level. Best practices include setting the appropriate SGA size, sizing SGA components, using AMM, and monitoring memory usage.

Oracle database server hardware configuration requirements: Processor: multi-core, with a main frequency of at least 2.5 GHz. For large databases, 32 cores or more are recommended. Memory: At least 8GB for small databases, 16-64GB for medium sizes, up to 512GB or more for large databases or heavy workloads. Storage: SSD or NVMe disks, RAID arrays for redundancy and performance. Network: High-speed network (10GbE or higher), dedicated network card, low-latency network. Others: Stable power supply, redundant components, compatible operating system and software, heat dissipation and cooling system.

The amount of memory required for an Oracle database depends on the database size, workload type, and number of concurrent users. General recommendations: Small databases: 16-32 GB, Medium databases: 32-64 GB, Large databases: 64 GB or more. Other factors to consider include database version, memory optimization options, virtualization, and best practices (monitor memory usage, adjust allocations).

To create a scheduled task in Oracle that executes once a day, you need to perform the following three steps: Create a job. Add a subjob to the job and set its schedule expression to "INTERVAL 1 DAY". Enable the job.

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.
