How to give dba permissions in oracle

Oracle method to give DBA permissions: 1. Use the "CREATE USER" statement to create a new user, then use the "ALTER USER" statement to grant DBA permissions to the user, and finally use the "SHOW USER" command to verify whether the user has Have DBA authority. 2. Use the "CREATE ROLE" statement to create a role, then use the "GRANT" statement to grant DBA authority to the role, and finally use the "GRANT" statement to grant the role to the user.

#The operating environment of this article: Windows 10 system, Oracle version 19c, dell g3 computer.

Oracle database is a popular relational database management system with powerful functions and flexible permission management. In Oracle database, DBA (Database Administrator) authority is the highest level of authority, allowing users to exercise complete control over the database. This article will introduce how to give DBA permissions.

1. To assign DBA permissions to a user, you need to connect to the Oracle database as a user with appropriate permissions. You can use the sqlplus command line tool or graphical user interface tools such as Oracle SQL Developer to connect.

After connecting to the database, you can follow the following steps to assign DBA permissions to the user:

1. Create a user: If there is no user account to be granted DBA permissions, you can use the CREATE USER statement to create one new user. For example, you can use the following command to create a user named DBA_USER:

CREATE USER DBA_USER IDENTIFIED BY password;

where password is the user's password.

2. Grant permissions: To grant DBA permissions to a user, you can use the ALTER USER statement. For example, you can use the following command to give DBA permissions to the DBA_USER user:

ALTER USER DBA_USER GRANT DBA;

This will give the DBA_USER user full DBA permissions.

3. Verify authority: You can use the SHOW USER command to verify whether the user already has DBA authority. For example, use the following command to check the permissions of the DBA_USER user:

SHOW USER;

If the permissions are set correctly, the user's details and DBA permissions will be displayed.

2. In addition to using the ALTER USER command, you can also grant DBA authority through roles. A role is a set of permissions that can be assigned to users to simplify permission management. You can use the following steps to grant DBA permissions to a role:

1. Create a role: If there is no DBA role yet, you can use the CREATE ROLE statement to create a role. For example, use the following command to create a role named DBA_ROLE:

CREATE ROLE DBA_ROLE;

2. Grant permissions: Use the GRANT statement to grant DBA permissions to the role. For example, use the following command to grant DBA authority to the DBA_ROLE role:

GRANT DBA TO DBA_ROLE;

3. Assign role: Use the GRANT statement to assign the role to the user. For example, use the following command to assign the DBA_ROLE role to the DBA_USER user:

GRANT DBA_ROLE TO DBA_USER;

In this way, the DBA_USER user will have all the permissions of the DBA_ROLE role, including DBA permissions.

It is worth noting that before granting DBA authority, you must carefully evaluate which users will be granted DBA authority. DBA authority allows users to make any modifications to the database, including creating and deleting tables, modifying and deleting data, etc. DBA authority should only be granted after thorough consideration and verification.

Summary

Granting DBA authority to a user is an operation that grants the highest authority in the Oracle database. This article details how to use the ALTER USER statement and roles to assign DBA privileges. However, it is important to carefully consider and verify that only users who truly need these privileges are granted DBA privileges

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