oracle 採用操做系統 認證登錄數據庫

以oracle用戶登錄操做系統，用sys用戶任意密碼登錄。
[oracle@dbsrv ~]$ sqlplus sys/akdosfw as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Nov 24 06:39:31 2015

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> connect sys/dksfwj as sysdba
Connected.
SQL>
SQL>
SQL> show user
USER is "SYS"

[oracle@dbsrv ~]$ rman target sys/testdkslfdsfkd

Recovery Manager: Release 11.2.0.4.0 - Production on Tue Nov 24 06:42:00 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database: SZTECH (DBID=3189320464)

RMAN> exit

Recovery Manager complete.
[oracle@dbsrv ~]$ rman target sys/testdksadsfe

Recovery Manager: Release 11.2.0.4.0 - Production on Tue Nov 24 06:42:08 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database: SZTECH (DBID=3189320464)

RMAN>

因而可知，當登錄數據時採用操做系統認證時，對輸入的用戶名和密碼並無進行檢查。