oracle11gr2 installation

Oracle 11gR2 Installation Tutorial

Oracle 11g is a relational database management system launched by Oracle Corporation. It has good database management performance, security, reliability and scalability, and is widely used in enterprise-level database development and management. The following is the installation tutorial for Oracle 11gR2.

1. Download the Oracle11gR2 installation file and decompress it

First, you need to download the Oracle 11gR2 installation file from the Oracle official website and decompress it. After decompression, you will get two folders: one is the "database" folder, used to install Oracle Database 11gR2; the other is the "client" folder, used to install Oracle Client.

2. Set environment variables

Before installing Oracle, you need to set environment variables to ensure that various paths during the installation process can be found correctly. In Windows systems, the following environment variables need to be set:

• ORACLE_HOME: the path pointing to the Oracle installation directory, such as D: ppOracle.
• PATH: Add the Oracle installation directory path to the PATH environment variable.
• LD_LIBRARY_PATH: For Linux systems, set in the environment variable:

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib

3. Run Installation program

Run the "setup.exe" file in the "database" folder to enter the Oracle 11gR2 installation wizard. On the "Select Installation Type" page, you need to select the "Install database software only" option, and then click the "Next" button to continue the installation.

4. Configure the directory for Oracle installation

In the "Select Installation Option" page, you can modify the path for Oracle installation and set the default installation path for all Oracle software, and then click "Next" button.

5. Installing Prerequisite Checks

In the "Prerequisite Checks" page, Oracle will check whether your computer meets the installation requirements for Oracle 11gR2. If you have all the necessary software installed on your computer, these checks should complete successfully.

6. Configuring Oracle Base

In the "Specify Oracle Base" page, you need to configure the paths of Oracle Base and Oracle Inventory. The installer automatically sets the Oracle Inventory directory to ORACLE_BASEoraInventory, and you can modify its path as needed. Then click the "Next" button.

7. Select the installation type

On the "Select Installation Type" page, you need to select the type of database instance you want to install. If you only want to install a "Standard Edition" database instance, then you can select the "General Purpose / Transaction Processing" option. In the "Specify Database Edition" page, you can select the installed database version, such as "Enterprise Edition", "Standard Edition", "Standard Edition One".

8. Set passwords

In the "Specify Database Passwords" page, set the passwords for SYS, SYSTEM, and all other users. Please note that the system administrator password is required to install Oracle, not to manage the database.

9. Configuring the listener

In the "Install Product" page, Oracle Database needs to be installed. The installer will prompt you whether to install a new listener. Select "Yes" and specify the listener name, or associate the Oracle instance with an existing listener. On the Specify Network Configuration page, configure the required network information.

10. Installation process

After confirming the installation options, click the "Install" button to start the installation process. During the installation process, the installer prompts you to enter necessary information and confirm other options. When finished, click the "Finish" button.

Summary

The installation process of Oracle 11gR2 is a process that needs to be handled carefully and needs to be carried out step by step according to the above steps. If we fail to install Oracle correctly, it may cause the system to run slowly or not meet our needs. Therefore, we need to handle the Oracle installation process very carefully to ensure that our installation and configuration process is correct.

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