How to install Oracle on CentOS 7
Oracle is a well-known relational database management system. It is powerful and can manage large amounts of data. It is widely used in enterprises and institutions, especially in finance, telecommunications, e-commerce, education and other fields. If you are using CentOS 7 operating system and want to install Oracle database, you can follow the steps below.
- Install the required software
Before installing the Oracle database, you need to install some necessary software. There are two installation methods provided here: one is to install using the yum package manager, and the other is to download from the Oracle official website and install manually. Here we use the first method.
Open the terminal, log in as the root user, and execute the following command:
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This will install many software packages and takes a long time. If you have multiple download sources, you can set priorities to speed up your downloads. Execute the following command:
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Next, create the /etc/yum.repos.d/public-yum-ol7.repo file and add the following content:
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Execute the following command to clear yum Cache and rebuild the cache:
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- Install Oracle database
Download the Oracle database installation file. Find the corresponding version and platform on the official website https://www.oracle.com/downloads/index.html and download it. Here, Oracle Database 19c Enterprise Edition for Linux x86-64 is used as an example. The download file name is LINUX.X64_193000_db_home.zip.
Copy the downloaded file to the server. We copy it to the /home/oracle directory.
Create Oracle users and groups:
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Unzip the installation file. In the command line, enter the directory where the downloaded compressed package is located, and execute the following command:
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After decompression, enter the database software directory, for example:
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Set environment variables. Run the following command as the root user:
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Modify user restrictions. Add the following line to the end of the /etc/security/limits.conf file:
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Add the following line to the end of the /etc/pam.d/login file:
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Set user environment variables. Edit the user ~/.bash_profile file and add the following content:
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Switch to the Oracle user and run the installer. Execute the following command:
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The installation wizard interface will appear. Follow the operation prompts and select the installation path, database type, password, etc. If you use SSH to log in remotely and want to perform the installation wizard in the graphical interface, you can first start the X server locally, and then add the -X parameter to the SSH connection, for example:
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Note: During the installation process, Check whether some necessary environment variables and software packages have been installed. If there are any problems, please read the error message carefully and try to solve it. The installation program will also automatically adjust some kernel parameters, which may require restarting the server.
After the installation process is completed, remember to record the password and other information.
- Configuring the Oracle database
After installing the Oracle database, some configurations are required so that it can be connected and used normally. Here are some basic configuration steps.
Start the database. Run the following command as the Oracle user:
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After entering the password, you will enter the SQL command line interface. Run the following command:
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Wait for a while, the command line will show that the database has been started.
Create new user. If you need to create a new user in the database, you can run the following command:
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where newuser is the username and password is the password. If you need to assign specific permissions and roles to this user, you can run additional commands.
Modify the listener configuration. If you need to modify the listener properties, you can edit the /home/oracle/LINUX.X64_193000_db_home/network/admin/listener.ora file.
Start the listener. Run the following command as the Oracle user:
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Test the connection. Use client software on another computer, such as SQL Developer, to connect to the database instance. Correctly enter the server IP address, port number, user name, password and other information, and perform the test. If the connection is successful, you can use the client software to manage the database.
The above are the basic steps for installing Oracle database on CentOS 7. I hope it will be helpful to you. Please also pay attention to security to avoid damage to the database.
The above is the detailed content of How to install Oracle on CentOS 7. For more information, please follow other related articles on the PHP Chinese website!

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