How to log in to oracle

Oracle is a popular relational database commonly used for the development and management of enterprise-level applications. Oracle has multiple versions and different configuration options, so its installation and use may vary. But basically, there are two ways to log in to Oracle: using SQL*Plus (a command line tool) and using Oracle SQL Developer (a graphical user interface (GUI) tool). This article will focus on how to use these two tools to log in to Oracle.

1. Log in to Oracle using SQL*Plus

1. Install Oracle.
First, you need to install the Oracle database. If you haven't installed it yet, you can download the installer from the official website (https://www.oracle.com/) and follow the installation wizard instructions to install it. During the installation process, you will be asked to create an administrator account and a password. This account is the account that will be logged in later.

2. Open the command line window.
In Windows systems, you can press "Win R" and then enter "cmd" to open the command line window. In Linux systems, you can open a terminal.

3. Enter the SQL*Plus command.
Enter the following text in the command line window. Note that there is a space between the last word "sysdba" and "as" in the command line:

sqlplus username/password@database as sysdba

Among them, "username" and "password" are The username and password of the administrator account you created. "database" is the name of the Oracle database you created. If you want to log in using Windows authentication, you can enter:

sqlplus "/ as sysdba"

This will allow you to log in to Oracle directly as a Windows administrator.

4. Enter and log in.
After entering the SQL*Plus command, press the Enter key, and the program will prompt you to enter the administrator's password. Enter the password and press Enter to log in to Oracle. At this point, you have successfully logged in to the Oracle database.

2. Log in to Oracle using Oracle SQL Developer

1. Install Oracle SQL Developer.
You can download the Oracle SQL Developer installation package from the official website and install it. During the installation process, you need to specify the information to connect to the Oracle database, such as host name, port number, Oracle SID, etc.

2. Open Oracle SQL Developer.
After the installation is complete, you can open Oracle SQL Developer on the desktop.

3. Configure connection information.
After opening Oracle SQL Developer, you can find the "Connections" tab in the left panel of the main interface. If you have not created a connection yet, you need to create a new one. The specific steps are to right-click the connection panel, select "New Connection" (New Connection), and then enter the connection information according to the database information specified in the installer. This information includes:

• Host Name
• Port Number
• Oracle SID
• User Name
• Password

4. Test the connection and log in.
After entering the connection information and saving it, you can find the corresponding connection on the connection panel, and right-click to select the "Test" option to test whether the connection is normal. After the test is normal, you can click Connect to log in to the Oracle database.

Summary

Personally speaking, becoming a qualified Oracle system administrator requires good basic Oracle knowledge and skills. This article lists the basic Oracle login methods, but if you want Proficient use of this technique in daily work requires more learning and practice. I hope this article can provide some help to beginners who want to learn how to log in to Oracle.

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