SQL>   CREATE USER JOHN_DOE IDENTIFIED BY User_test1111;

USER created.

SQL>   GRANT SELECT ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   GRANT INSERT ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   GRANT UPDATE ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   GRANT DELETE ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   GRANT ALL PRIVILEGES ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   REVOKE SELECT ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.

SQL>   REVOKE INSERT ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.

SQL>   REVOKE UPDATE ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.

SQL>   REVOKE DELETE ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.

SQL>   REVOKE ALL PRIVILEGES ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.

SQL>   GRANT SELECT,UPDATE ON EMPLOYEES TO JOHN_DOE;

Grant succeeded.

SQL>   REVOKE SELECT,UPDATE ON EMPLOYEES FROM JOHN_DOE;

Revoke succeeded.