Oracle中password file的作用及说明

Server:

SQL> !
[oracle@jumper oracle]$ cd $ORACLE_HOME/dbs
[oracle@jumper dbs]$ ls orapwhsjf
orapwhsjf
[oracle@jumper dbs]$ mv orapwhsjf orapwhsjf.bak
[oracle@jumper dbs]$

Remote:

E:\Oracle\ora92\bin>sqlplus /nolog

SQL*Plus: Release 9.2.0.4.0 - Production on 星期四 4月 15 09:50:14 2004

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

SQL> connect sys/oracle@hsjf as sysdba
ERROR:
ORA-01031: insufficient privileges


SQL>

这实际上就是无法通过口令文件验证身份

4.如果丢失了passwdfile

如果使用passwdfile却意外丢失，此时将不能启动数据库

SQL> startup force;
ORACLE instance started.

Total System Global Area 131142648 bytes
Fixed Size 451576 bytes
Variable Size 104857600 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
ORA-01990: error opening password file '/opt/oracle/product/9.2.0/dbs/orapw'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3

此时可以通过orapwd重建口令文件来解决
此处我们恢复口令文件既可

SQL> !
[oracle@jumper oracle]$ mv $ORACLE_HOME/dbs/orapwhsjf.bak orapwhsjf
[oracle@jumper oracle]$ exit
exit

SQL> alter database open;

Database altered.

SQL>

大致就是如此.

5. remote_login_passwordfile = shared

我们看一下Oracle9i文档中的说明:

SHARED

More than one database can use a password file. However, the only user recognized by the password file is SYS.

意思是说多个数据库可以共享一个口令文件,但是只可以识别一个用户:SYS

SQL> select * from v$pwfile_users;

USERNAME SYSDB SYSOP
------------------------------ ----- -----
SYS TRUE TRUE

SQL> grant sysdba to eygle;
grant sysdba to eygle
*
ERROR at line 1:
ORA-01994: GRANT failed: cannot add users to public password file

SQL> show parameter password

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
remote_login_passwordfile string SHARED

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