1. Log in to sysdba with system, the default password is system
Using the grant command, the permissions to be assigned are on the object of the operation to the authorized user object
The default Scott user permissions are low, you can use system to give Scott dba permissions
grant dba to scott;
2. Scott users do not use DBA authority, this operation has security risks
You can create a new user, grant DBA permissions, and restore Scott user data
grant create view to scott;