Detailed explanation of how to change Oracle default account password

Detailed explanation of how to change Oracle default account password

Oracle database is a commonly used relational database management system. It has powerful data management and processing capabilities and is widely used. Application in businesses and organizations. When using Oracle database, in order to ensure data security, we need to change the default account password in time. The following will introduce in detail how to change the Oracle default account password, including specific code examples.

1. Connect to the Oracle database

First, use SQL*Plus tools or other database clients to connect to the Oracle database. Enter the following command at the command line:

sqlplus / as sysdba

This will connect to the database as the system administrator (sysdba). After entering the password, enter the SQL*Plus command line interface.

2. View the default account

In SQL*Plus, you can view the default account in the database through the following SQL statement:

SELECT username FROM dba_users WHERE common = 'YES';

This command Usernames for all default accounts will be listed.

3. Modify the default account password

Next, we will demonstrate how to modify the SCOTT user's password as an example. You can use the following SQL statement to change the SCOTT user's password to "new_password":

ALTER USER scott IDENTIFIED BY new_password;

This command will change the SCOTT user's password to "new_password". Note that you need to replace "new_password" with the new password you want to set.

4. Verify whether the modification is successful

After modifying the password, you can use the following command to verify whether the new password is effective:

CONNECT scott/new_password;

If you can successfully connect to database, it means the password has been changed successfully.

5. Other notes

When changing the database password, you need to ensure that you follow security best practices, such as password complexity requirements, regular password updates, etc. Also, try to avoid using simple passwords to increase data security.

Summary: This article introduces in detail the method of changing the Oracle default account password and provides specific code examples. By promptly changing the default account password, the security protection of the database can be effectively strengthened, thereby protecting the data from being obtained by unauthorized visitors.

The above is a detailed introduction to the method of changing the Oracle default account password. I hope it will be helpful to you.

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