Administrative Privileges (31)

Administrative privileges that are required for an administrator to perform basic
database operations are granted through two special system privileges, SYSDBA and
SYSOPER. You must have one of these privileges granted to you, depending upon the
level of authorization you require.

Note: The SYSDBA and SYSOPER system privileges allow access
to a database instance even when the database is not open. Control
of these privileges is totally outside of the database itself.
The SYSDBA and SYSOPER privileges can also be thought of as
types of connections that enable you to perform certain database
operations for which privileges cannot be granted in any other
fashion. For example, you if you have the SYSDBA privilege, you
can connect to the database by specifying CONNECT AS SYSDBA.

管理員許可權
1. 被賦予兩個特殊的系統許可權 , sysdba 與 sysoper
這兩個許可權在資料庫未被開啟的情況下 , 也能夠登入例項

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