（4）sysdba比sysoper多了一個create database的權限 3. SYSDBA Perform STARTUP and SHUTDOWN operations ALTER DATABASE: open, mount, back up, or change character set CREATE DATABASE CREATE SPFILE ARCHIVELOG and RECOVERY Includes the RESTRICTED SESSION privilege Effectively, this system privilege allows a user to connect as user SYS. SYSOPER Perform STARTUP and SHUTDOWN operations CREATE SPFILE ALTER DATABASE OPEN/MOUNT/BACKUP ARCHIVELOG and RECOVERY Includes the RESTRICTED SESSION privilege This privilege allows a user to perform basic operational tasks, but without the ability to look at user data
