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This article introduces the relevant knowledge of "Oracle 11g database installation and configuration method". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

Oracle 11g installation

Oracle Database, also known as Oracle RDBMS, or simply Oracle. Oracle is a relational database management system. It is a leading product in the field of databases. Oracle database system is the most popular relational database management system in the world. To learn how to use Oracle, you first need a successful installation. Oracle has many versions, this article focuses on Oracle 11g installation and uninstall.

I. installation

1. Oracle Download

Oracle 11g has two files to download, so you need to download both files. Oracle 11g download address:

http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html

1) Installation preparation

Extract the downloaded file as shown in the figure

The download file includes two files 1of7 and 2of7. After extracting the file, you cannot install it directly, otherwise you will report an error when copying the file during installation. Before installation, you need to copy the decompressed files in 2of7 to the directory corresponding to this file in 1of7, that is, oracle 11.2.0.4\…2of7\database\stage\Components directory. Copy the files to oracle 11.2.0.4 \…1of7\database\stage\Components directory.

2. installation steps

Run the file... 1of7\database\setup.exe to start the installation, as shown in the figure

Fill in an email address (optional), uncheck if you want to receive security updates through oracle support, click "next";

If you do not fill in the email address, you will be prompted for this content in the next step. Click "Yes" to continue.

Select Skip Software Update and click "Next";

Here you can choose to create and configure the database, that is, to create a database instance at the time of installation, here you choose to install only the database software, and then create an instance after installation;

Attachment: Relationship between database and instance

Database: A collection of physical operating system files or disks. With Oracle's Automatic Storage Management (ASM) or RAW partitioning, the database may not be a separate file in the operating system, but the definition remains unchanged.

Example: A set of Oracle daemons/threads and a shared memory area shared by threads/processes running on the same computer. Volatile, non-persistent content can be maintained here.

A database is a vacant lot that provides the basis for an instance, which is a house built on that vacant lot. Generally speaking, a database is an instance. Each instance in the database is independent of each other and needs to establish a specific connection to access each other.

Select Single Instance Database Installation, or Oracle Real Application Cluster Database Installation if multiple instances are required, and click Next;

Select the language and click "Next";

Select Enterprise Edition and click "Next";

Select the installation directory and click "Next";

Condition checks;

Click "Install";

Wait for installation to complete;

After completion, the installation is completed;

II. uninstall

Oracle database unloading steps:

1. Deactivate oracle services: enter computer management, in services, find all services at the beginning of oracle, right-click and select stop;

2. From the Start menu, locate Universal Installer, run Oracle Universal Installer, and click Uninstall Product;

3. Press Windows logo key and R key, open the run window, enter regedit, open the registry, expand HKEY_LOCAL_MACHINE\SOFTWARE in turn, find oracle, delete it;

4. Expand HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services and delete all entries beginning with oracle;

5. Expand HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application and delete all entries beginning with oracle;

6. In HKEY_CLASSES_ROOT, delete entries that begin with ora;

7. Delete oracle directory, delete Oracle installation directory app, restart computer.

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