How to cancel oracle authorization

Steps to cancel Oracle authorization: 1. Confirm the scope of authorization to cancel, and make it clear which user or role is canceling authorization; 2. Log in to the Oracle database and use an account with administrator rights to log in to the Oracle database. ; 3. To revoke the user's authorization, you can execute the following statement: revoke select on table_name from testuser; 4. Revoke the role's authorization; 5. Clear the authorization.

The operating environment of this tutorial: Windows 10 system, Oracle version 19c, DELL G3 computer.

Oracle is a widely used relational database management system commonly used in enterprise-level applications and websites. However, sometimes it is necessary to revoke Oracle authorization granted to a user or role. This article will introduce how to correctly cancel Oracle authorization and provide some precautions to ensure the smooth operation.

In the process of daily database management, you may encounter situations where you need to cancel Oracle authorization. This may be because a user or role has too high or expired permissions, or some authorization needs to be revoked due to security requirements. The following are the steps and precautions for canceling Oracle authorization:

1. Confirm the scope of canceled authorization:

Before canceling Oracle authorization, you must first clarify which one is being cancelled. Authorization of users or roles. Confirm the name and permission scope of the user or role, which will help ensure that the corresponding authorization is canceled correctly.

2. Log in to the Oracle database:

Use an account with administrator rights to log in to the Oracle database. This is usually sysdba authority, which has the highest level of authority and can perform all database operations.

3. Revoke user authorization:

To cancel a user's authorization, you can use the revoke statement. For example, if you want to cancel the select permission of user "testuser" on a table, you can execute the following statement:

revoke select on table_name from testuser;

4. Revoke the authorization of the role:

Revoking a role's authorization is similar to revoking a user's authorization, except that you need to specify the role name instead of the user name in the revoke statement. For example, to cancel the insert permission of role "testrole" on a table, you can execute the following statement:

revoke insert on table_name from testrole;

5. Clear authorization:

If you need to cancel all authorizations of a user or role at once, you can use revoke all privileges statement. For example, to revoke all authorizations from user "testuser", you can execute the following statement:

revoke all privileges from testuser;

6. Notes:

When canceling Oracle authorization, you need to pay attention to the following points:

-Proceed with caution: Make sure that the user or role canceling authorization does not require the corresponding permissions to avoid affecting running applications.

- Back up first and then operate: Before performing the deauthorization operation, it is best to back up the relevant database and authorization information. This way, even if the wrong authorization is accidentally canceled, it can be restored to its previous state.

- Notify relevant users: Before revoking authorization, you should communicate with the relevant user or application developer to ensure that they no longer rely on the granted permissions.

Summary:

Canceling Oracle authorization is a common operation in the database management process. Following the correct steps and precautions can ensure smooth operation and avoid unintended impacts to systems and applications. Before performing deauthorization, be sure to carefully evaluate the objects and scope of authority for deauthorization, as well as communicate with relevant personnel and back up the authorization information of the database.

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