How to connect sqlplus to database

How to connect sqlplus to the database: 1. Open a terminal or command line window and enter the "sqlplus" command to start SQL*Plus; 2. If the Oracle database is not on the local host, you also need to specify the connection information of the database; 3. After pressing the Enter key to execute the command, SQL*Plus will prompt you to enter the password. Enter the correct password and press the Enter key; 4. If the user name and password are verified successfully, SQLPlus will successfully connect to the database and display the SQLPlus command prompt. symbol.

SQLPlus is a command line tool provided by Oracle database for connecting and managing Oracle database. The following is how to connect to the database using SQLPlus:

Open a terminal or command line window.

Enter the following command to start SQL*Plus:

sqlplus

If the Oracle database is not on the local host, you also need to specify the connection information of the database, for example:

sqlplus username/password@hostname:port/service_name

Among them, username is the user name of the database, password is the password, hostname is the name or IP address of the host where the database is located, port is the port number that the database listens on, and service_name is the service name or SID of the database.

After pressing the Enter key to execute the command, SQL*Plus will prompt you to enter the password. Enter the correct password and press Enter.

If the username and password are verified successfully, SQLPlus will successfully connect to the database and display the SQLPlus command prompt.

In SQL*Plus, you can execute various SQL statements and commands to operate and manage the database. For example, you can execute query statements, create tables, insert data, etc.

When you need to exit SQL*Plus, you can use the following command:

exit

or press the Ctrl D key combination.

The above is the basic method of using SQL*Plus to connect to the Oracle database. Please note that you must ensure that the Oracle client software is properly installed and configured, and has the correct database connection information and permissions.

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