两种启动Oracle数据库的方式

1.使用操作系统验证启动Oracle数据库的方式

编辑D:\oracle\ora92\network\admin\sqlnet.ora增加

SQLNET.AUTHENTICATION_SERVICES = (NTS) --启用

C:\Documents and Settings\Paul Yi>sqlplus "/as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Tue Dec 18 12:10:18 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to an idle instance.

SQL> startup;
ORACLE instance started.
Total System Global Area 101785252 bytes
Fixed Size 454308 bytes
Variable Size 75497472 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
Database mounted.
Database opened.

2.使用密码验证启动Oracle数据库的方式

编辑D:\oracle\ora92\network\admin\sqlnet.ora

# SQLNET.AUTHENTICATION_SERVICES = (NTS) --注释掉

使用操作系统登录方法时就报以下错误
C:\Documents and Settings\Paul Yi>sqlplus "/as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Tue Dec 18 12:04:05 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
ERROR:
ORA-01031: insufficient privileges

Enter user-name:
ERROR:
C:\Documents and Settings\Paul Yi>sqlplus /nolog
SQL*Plus: Release 9.2.0.4.0 - Production on Tue Dec 18 12:04:50 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
SQL> conn sys/abcdefg as sysdba
Connected.

--看到密码输错，就登录不成功，所以密码验证生效
SQL> conn sys/abcde as sysdba
ERROR:
ORA-01017: invalid username/password; logon denied

Warning: You are no longer connected to ORACLE.
SQL> startup;
ORACLE instance started.
Total System Global Area 101785252 bytes
Fixed Size 454308 bytes
Variable Size 75497472 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
Database mounted.
Database opened.