Granting Oracle permissions is crucial because it helps to ensure that only authorized users have access to certain data and functionalities within the Oracle database. Without proper permission controls in place, there is a risk of unauthorized access, data breach, data manipulation, and other security threats.

By granting permissions carefully and selectively, database administrators can control who has access to what data and what actions they can perform on that data. This helps to maintain data integrity, confidentiality, and availability within the Oracle database.

Additionally, permission controls help to comply with industry regulations and internal policies related to data security and privacy. They also help to prevent accidental data loss or corruption by restricting access to sensitive parts of the database.

In summary, granting Oracle permissions is essential for ensuring the security and integrity of the database, protecting sensitive data, and complying with regulations and policies.