oracle username modification

Oracle is a common relational database management system that can store, manage and process various types of data. In an Oracle database, each user has a unique username and password, which are used to log into the database and access its contents. If you need to modify the user account name in the Oracle database, you can follow the steps below.

Step 1: Use an administrator account to connect to the Oracle database

Before you start using an administrator account to modify the Oracle database user name, you need to use an administrator account to connect to the Oracle database. You can log in to the database using a SQL statement similar to the following command:

sqlplus sys/password as sysdba;

This will connect to the sysdba privileged mode of the Oracle database. You will need to enter the username and password for the administrator account.

Step 2: Check the current username

Before making any modifications, you need to know the complete information of the current username. You can get the current user details in Oracle database using the following command:

SELECT USERNAME, USER_ID, CREATED, DEFAULT_TABLESPACE, TEMPORARY_TABLESPACE, EXPIRY_DATE, ACCOUNT_STATUS
FROM DBA_USERS WHERE USERNAME = 'Current username' ;

In the above command, "DBA_USERS" is a system table that contains all user information in the Oracle database. This will return detailed information about the specified user, including account status, creation date, default tablespace, etc.

Step 3: Create a new username

After you know your current username and details, you can start creating a new username. In an Oracle database, you can create a new account using the following command:

CREATE USER new username IDENTIFIED BY 'new password';

This will create a new user account and Associate it with the specified password. Make sure the password is complex enough to prevent unauthorized users from accessing the database.

Step 4: Authorize the new account

When creating a new username, the new user must be granted the corresponding permissions. You can authorize the new account using the following command:

GRANT CONNECT, RESOURCE, DBA TO new username;

This command will grant the new account permissions to connect and resource access, and make it a database administrator.

Step 5: Verify the new account

After all changes are completed, you can use your new username and password to connect and access data in the Oracle database. You can test the new account using the following command:

sqlplus new username/new password;

This will connect to the Oracle database and log in to the database using the new account.

Summary

In Oracle database, you can manage different users by modifying the name of existing user accounts or creating new user accounts. To modify an existing username, make sure to connect to the database using an administrator account, check the details of the current username, and create a new username and its permissions. By following these steps, you can easily modify the username in your Oracle database.

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