Oracle User Permissions: How to Grant Authority

There are several main methods for granting permissions to users in Oracle databases.

1. Grant command: The Grant command can be used to give specific permissions to a user. Syntax is as follows:
2. Grant permissions to a username for a list of permissions.
3. For example, granting SELECT permission to user test:
4. Grant test the permission to select on the table.
5. To revoke a user’s permissions, you can use the REVOKE command with the following syntax.
6. Remove permissions from username.
7. For example, revoking the SELECT permission for the user test.
8. Revoke the SELECT permission on the table from the test user.
9. Utilizing roles allows for permissions to be consolidated into roles, which can then be assigned to users, simplifying permission management. Roles are created using CREATE ROLE, permissions are granted to roles using GRANT, and then the roles are granted to users using GRANT. For example, creating a role and granting SELECT permission to that role:
10. Create a role called role_name and grant it select permission on the table.
11. Grant the role to the user.
12. Give the role_name to the username.

The above methods can effectively manage the permissions of users in Oracle databases.