Oracle is a relational database management system that is widely used for data storage, management and processing by major commercial enterprises around the world. Oracle has also become the market leader in database management systems and is widely used in many industries. In this article, we will take an in-depth look at the basic usage tutorials of Oracle.
1. What is Oracle
Oracle is a relational database management system. It was created in 1977 and was developed by Larry Ellison, Ed Oates and Bob Miner. Oracle is extremely easy to use and covers all aspects of SQL in terms of functionality. According to statistics from Oracle's official website, Oracle is one of the most popular database solutions in the global market. Oracle database software is developed by Oracle Corporation and is written in several programming languages, including Java, C, and C. It was originally designed and optimized for handling large enterprise-level databases.
2. Oracle installation
- The first step is to download and install the Oracle software. Oracle software can be downloaded from the official website, and the installation process can be started after downloading the installation program.
- After starting the installation program, you first need to select the installation type. In the Select Type dialog box, you can choose between Standard Edition or Enterprise Edition, and so on. Once selected, click the "Next" button.
- Secondly, you need to configure the Oracle directory. You can use the default values directly, or you can choose to create a new directory. Click the "Next" button.
- Next, select the installation components, that is, the various components of the Oracle software. You can select the components you need and install them in a specific directory. After selecting the component, you can click the "Next" button at this time.
- Then you need to set the Oracle service name, which is the name of the Oracle database service. The required service name can be entered on this page. Click the "Next" button.
- At this point, you need to assign a port number to the database. You can use the default value or choose a different port. Click the "Next" button.
- When installing the next Oracle step is to select the name and password of the Oracle instance and Oracle Administrator account. In this step, make sure that the password for the database administrator account is strong, as it is required to set up your own database and assign permissions.
- In this step, you need to specify the basic configuration options of the Oracle software and the names of the managed databases and containers. Click the "Next" button.
- In the last step, you need to set the system environment variables. This will include Oracle's home directory, middleware and other environment options. By default, Oracle will configure user variables, system variables, administrator variables, etc. for us.
3. Basic operations of Oracle
The basic operations of Oracle refer to operations such as viewing, adding, deleting, updating and filtering of the database.
- View the database
In Oracle, users can view the structure of the database, such as tables, views, stored procedures, etc. Viewing the database structure is also a prerequisite for other operations. In the Oracle database, use the following SQL statement to view the database.
SELECT table_name FROM all_tables;
- Add data
In Oracle, you can use the INSERT statement to add data.
INSERT INTO table_name (column1, column2, column3, …) VALUES (value1, value2, value3, …);
- Update data
In Oracle, use the UPDATE statement to update data.
UPDATE table_name SET column1 = value1, column2 = value2, … WHERE condition;
- Delete data
In Oracle, use the DELETE statement to delete data.
DELETE FROM table_name WHERE condition;
- Data filtering
In Oracle, use the SELECT statement to filter data. Specifying the table and the semicolon are required components of the SELECT statement, while WHERE is optional. Used to specify filter conditions.
SELECT * FROM table_name WHERE condition;
4. Oracle backup and recovery
In the database system, backup and recovery are very important steps. In Oracle, the following steps can be used to back up the database.
- Use the expdp command to back up the database to a specific directory:
expdp username/password directory=my_backup_dir dumpfile=my_backup.dmp full=yes;
- It is recommended to copy the backup file to another safe place, such as another computer or specific storage device.
- When restoring the database, please use the following steps:
- Use the impdp command to restore the backup file from the backup location to the original database.
impdp username/password directory=my_backup_dir dumpfile=my_backup.dmp full=yes;
After the restore is complete, the database will now be exactly the same as the backup file.
5. Summary
Oracle is one of the most widely used database management systems in the global market. Its powerful functions and ease of use make it the first choice for commercial enterprises. In this article, the basic operations of Oracle are introduced, including installation, configuration, backup and recovery, and other operations. Proficient in using Oracle can greatly improve the data management efficiency of an enterprise.
The above is the detailed content of oracle usage tutorial. For more information, please follow other related articles on the PHP Chinese website!

This article explains PL/SQL cursors for row-by-row data processing. It details cursor declaration, opening, fetching, and closing, comparing implicit, explicit, and ref cursors. Techniques for efficient large dataset handling and using FOR loops

This article examines Oracle database segment types (data, index, rollback, temporary), their performance implications, and management. It emphasizes choosing appropriate segment types based on workload and data characteristics for optimal efficienc

This article explores Oracle database performance testing tools. It discusses selecting the right tool based on budget, complexity, and features like monitoring, diagnostics, workload simulation, and reporting. The article also details effective bo

This article explores Oracle Database client tools, essential for interacting with Oracle databases without a full server installation. It details commonly used tools like SQL*Plus, SQL Developer, Enterprise Manager, and RMAN, highlighting their fun

This article examines Oracle's default tablespaces (SYSTEM, SYSAUX, USERS), their characteristics, identification methods, and performance implications. It argues against relying on defaults, emphasizing the importance of creating separate tablespac

The article explains how to create users and roles in Oracle using SQL commands, and discusses best practices for managing user permissions, including using roles, following the principle of least privilege, and regular audits.

This article guides users through downloading Oracle Database. It details the process, emphasizing edition selection (Express, Standard, Enterprise), platform compatibility, and license agreement acceptance. System requirements and edition suitabil

This article details Oracle Data Masking and Subsetting (DMS), a solution for protecting sensitive data. It covers identifying sensitive data, defining masking rules (shuffling, substitution, randomization), setting up jobs, monitoring, and deployme


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

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

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

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.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
