Let's talk about the environment and steps required to install Oracle (tutorial)

Oracle is a very famous database management system with a wide range of applications. When installing the Oracle database, you need to install a specific environment in the system. This article will introduce the environment and installation steps required to install Oracle.

1. Preparation before installation

Before installing Oracle, you need to download the corresponding installation package according to the operating system you are using. Oracle's official website provides a variety of different versions of installation packages, and you need to choose the appropriate version according to your own needs. In addition, the installation file of Oracle is relatively large, so please ensure that the computer hard disk has enough space.

2. Installation required environment

1. Operating system:

Oracle supports multiple operating systems, including Linux, Windows, UNIX, etc. Before installing Oracle, you need to ensure that the selected operating system meets Oracle's requirements, otherwise the installation may fail.

2. JDK:

You need to install Java Development Kit (JDK) before installing Oracle. In Oracle 12c, the JDK must be a 64-bit version and the version number must be above 1.8.0_121 for successful installation.

3. Hard disk space:

Before installing Oracle, you need to ensure that the computer hard disk has enough space. Oracle's installation package and database files are relatively large, so sufficient storage space needs to be reserved before installation.

4. Memory and processor:

In order to ensure the normal operation of Oracle, sufficient memory and processor need to be configured in the system. Generally speaking, computer memory should be no less than 2GB, and a 64-bit processor is required.

5. User permissions:

Before installing Oracle, you need to log in to the computer with administrator permissions, otherwise the installation may fail or the database may not be created.

3. Installation steps

1. Download and decompress the installation package

Download the full version of the Oracle installation file on the official website and decompress it.

2. Install JDK

If JDK is not installed, you need to install JDK first. In Oracle 12c, the JDK must be a 64-bit version and the version number must be above 1.8.0_121 for successful installation.

3. Install Oracle

Double-click the decompressed Oracle installer and follow the prompts to install. Some points to note during the installation process:

• Make sure to select the correct language and character set

When choosing the installation language and character set, you need to according to your own needs Make a selection. It is generally recommended to choose the UTF-8 character set.

• Configuring Oracle instance

When installing Oracle, you need to create at least one Oracle instance, which includes a database. It is necessary to set the instance name, administrator user name and password and other information, and determine the storage path of the database file.

• Configuring Listeners

Oracle uses listeners to help connect clients and instances. You need to configure the listener when installing Oracle.

4. Create database

You need to create a database after installing Oracle. You can use the Database Configuration Assistant provided by Oracle or create the database manually.

5. Configuring the firewall

After installing Oracle, you need to configure the port in the firewall to allow clients to connect to the Oracle database.

4. Summary

Installing Oracle needs to meet certain environmental requirements. You need to install a specific version of JDK and meet the computer hard disk space, memory and processor requirements. You should log in to the computer with administrator rights. . During the installation process, you need to pay attention to selecting the correct language and character set, configuring the Oracle instance and listener, etc. After successful installation, you need to create a database and configure the firewall to allow clients to connect to the Oracle database.

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