How to change account password in oracle database

With the continuous improvement of enterprise informatization, database has become one of the important tools for data management. As one of the most popular relational database management systems in the world, Oracle database is increasingly used in various fields.

However, with the popularization of database use, the ever-changing Internet world is also constantly changing, and data security issues have become a topic that the majority of enterprises and individuals need to pay attention to. One of the most basic security issues is ensuring the security of database account passwords.

It is very simple to change the account password in the Oracle database. The author will introduce you to the detailed steps below.

1. Log in to the Oracle database

Before performing any database operation, you first need to log in to the Oracle database system. You can use the sqlplus command in the terminal or command line, enter the user name and password, and connect to the database system.

For example:

sqlplus username/password@hostname:port/servicename

Among them, username is the database user name you want to log in to, password is the password, hostname is the database server address, port is the database connection port, and servicename is the connection service name.

2. Modify database user password

After connecting to the database, to change the database account password, you need to use the ALTER USER command.

For example, if you want to change the password of the user named scott to tiger, you can execute the following command:

ALTER USER scott IDENTIFIED BY tiger;

3. Check the password after modification

After modifying the user password, you can use the SELECT statement to check whether the modification is successful. For example:

SELECT username, password FROM dba_users WHERE username = 'scott';

The above command will query the user name and password of user scott and return the results.

Note: In Oracle, the passwords of the super administrator accounts SYS and SYSTEM cannot be modified directly using the ALTER USER command. Special tools are required, such as Oracle Enterprise Manager (OEM).

Summary

The above are the steps for changing the password of Oracle database, which are very simple and easy to use. In daily work, database account passwords need to be changed regularly to ensure database security. In addition, some good password strategies, such as password length of no less than 8 characters, combination of different types of characters, and frequent modification, should also be adopted to improve the security level of the system.

The above is the detailed content of How to change account password in oracle database. For more information, please follow other related articles on the PHP Chinese website!