How to log in to oracle

In the era of rapid development of modern technology, Oracle database has become the first choice of many enterprises because it is powerful and stable, and it can meet the requirements of enterprise-level applications. If you want to use the Oracle database on your own computer, you need to log in to Oracle. So, how to log in to Oracle? This article will introduce you to the detailed steps.

Step one: Download and install Oracle

Before downloading Oracle from the official website, you need to set the environment variables. Find Computer in the Start menu, right-click Properties, select Advanced System Settings, and click Environment Variables. Create a new variable named ORACLE_HOME under the system variables and assign it the Oracle installation path. Then add %ORACLE_HOME%\bin to the PATH variable and restart the computer after completing the settings.

Open the official website to download the Oracle installation package and install it step by step according to the prompts.

Step 2: Modify the environment variable

Open the computer properties, click on the environment variable, and change the value of ORACLE_HOME to the installation path of Oracle. Find TNS_ADMIN in the system variable. If it does not exist, create a new one, set its value to %ORACLE_HOME%\network\admin, and save it.

Step 3: Configure Oracle client

Open the Oracle installation directory, enter the network/admin directory, find the tnsnames.ora file, open and add a new service name.

[SERVICE_NAME] =
(DESCRIPTION =

(ADDRESS_LIST = 
    (ADDRESS = (PROTOCOL = TCP)(HOST = IP地址)(PORT = 端口号)) 
) 
(CONNECT_DATA = 
    (SERVICE_NAME = 数据库名称) 
)

)

After saving, follow the prompts to complete other configurations, depending on the situation.

Step 4: Open SQL Plus

Find the start menu, search for SQL Plus, and enter your username and password after opening it. If you are using Oracle database for the first time, you need to create a username and password. Just enter the following command on the console:

SQL> create user USERNAME identified by PASSWORD;

Reauthorization command ：

SQL> grant connect, resource to USERNAME;

At this point, you have successfully logged in to Oracle. If you encounter any problems during use, you can find answers in the official documentation or seek professional consultation.

Summary:

Oracle is a very powerful and stable database, and many large enterprises have made it their first choice. To log in to the Oracle database, you need to download and install it first, and configure the system environment variables and Oracle client. Only in this way can you successfully log in by entering your user name and password in SQl Plus. If you want to apply Oracle to your business, it is recommended that you study the relevant knowledge carefully and seek professional help.

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