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Oracle数据库中sys和system两个用户的区别

来源:互联网  宽屏版  评论
2008-07-30 06:50:51

sys是Oracle数据库中权限最高的帐号,具有create database的权限,而system没有这个权限,sys的角色是sysdba,system的角色是sysoper。

其余就是他们两个用户共有的权限了:

startup/shutdown/dba两个用户都是可以管理的。

平时用system来管理数据库就可以了。这个用户的权限对于普通的数据库管理来说已经足够权限了。

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

 
sys是Oracle数据库中权限最高的帐号,具有create database的权限,而system没有这个权限,sys的角色是sysdba,system的角色是sysoper。 其余就是他们两个用户共有的权限了: startup/shutdown/dba两个用户都是可以管理的。 平时用system来管理数据库就可以了。这个用户的权限对于普通的数据库管理来说已经足够权限了。 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
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