Oracle的sqlnet.ora与password文件试验

Oracle的sqlnet.ora与password文件试验

先看有没有sqlnet.ora
 
[Oracle@localhost ~]$ cd $ORACLE_HOME
[oracle@localhost dbhome_1]$ cd network
[oracle@localhost network]$ cd admin
[oracle@localhost admin]$ ls
listener.ora  samples  shrept.lst
[oracle@localhost admin]$

VMware+Linux+Oracle 10G RAC全程详细图解

在CentOS 6.4下安装Oracle 11gR2(x64)

Oracle 11gR2 在VMWare虚拟机中安装步骤

Debian 下 安装 Oracle 11g XE R2

Oracle 11gR2 在VMWare虚拟机中安装步骤

手动创建一个sqlnet.ora文件
 
[oracle@localhost admin]$ touch sqlnet.ora
[oracle@localhost admin]$ vim sqlnet.ora
[oracle@localhost admin]$ cat sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES=(none);
[oracle@localhost admin]$
 

试验登陆情况：
 
[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 15 08:26:25 2014

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

ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name:

*********************************
 
查看口令文件情况：
 
[oracle@localhost dbs]$ pwd
/u01/app/oracle/product/11.2.0/dbhome_1/dbs
[oracle@localhost dbs]$ ls
hc_orcl.dat  init.ora  initorcl.ora  lkORCL  orapworcl  spfileorcl.ora
[oracle@localhost dbs]$

现在执行口令文件处理：
 
用老的口令文件改口令不被允许：
 
[oracle@localhost dbs]$ orapwd file=orapworcl password=gaojian

OPW-00005: File with same name exists - please delete or renam
 
只好再作一个新的：
 
[oracle@localhost dbs]$ orapwd file=orapwgaojian password=gaojian
[oracle@localhost dbs]$ ls
hc_orcl.dat  initorcl.ora  orapwgaojian  spfileorcl.ora
init.ora    lkORCL        orapworcl
[oracle@localhost dbs]$

用刚刚作好的口令，还是不行（因为它和oracle中的sys口令不一致，是我随便设的，所以不行，其实登陆到哪个实例，就会用哪个口令文件--orapw）：
 
[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 15 08:32:23 2014

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

ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: sys as sysdba
Enter password:
ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: sys
Enter password:
ERROR:
ORA-01017: invalid username/password; logon denied

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
[oracle@localhost admin]$

*******************************
 
考虑删除orapworcl （这个操作实际上有一定的危险性）:
 
[oracle@localhost dbs]$ rm orapworcl
[oracle@localhost dbs]$

一样也是登陆不进去：
 
[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 15 08:34:24 2014

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

ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: sys as sysdba
Enter password:
ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: sys
Enter password:
ERROR:
ORA-01017: invalid username/password; logon denied

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
[oracle@localhost admin]$

*******************************
 
把sqlnet.ora中的 SQLNET.AUTHENTICATION_SERVICES=(none); 注释掉，再试验：
 
[oracle@localhost admin]$ cat sqlnet.ora
#SQLNET.AUTHENTICATION_SERVICES=(none);
[oracle@localhost admin]$

[oracle@localhost dbs]$ strings orapwgaojian
]\[Z
ORACLE Remote Password file
INTERNAL
FE406C76B620912C
861BAF16E111B672
[oracle@localhost dbs]$

登陆到数据库中，，来更改口令：
 
[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 15 08:44:08 2014

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> alter user sys identified by oracle;

User altered.

SQL>exit
 
[oracle@localhost dbs]$ strings orapwgaojian
]\[Z
ORACLE Remote Password file
INTERNAL
FE406C76B620912C
861BAF16E111B672
[oracle@localhost dbs]$

口令文件似乎无变化。
 
还是登陆不进去：
 
[oracle@localhost admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 15 08:45:41 2014

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

ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: sys as sysdba
Enter password:
ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name:

*******************************
 
看来还得用orapw的文件来对应。
 
[oracle@localhost dbs]$ orapwd file=orapworcl