如何找到主机字符串?

时间:2013-06-18 13:26:59

标签: oracle oracle10g oracleforms

我刚刚安装了Oracle - DevSuitehome2,Oracle数据库10g快捷版和Oracle Developer Suit - DevSuiteHome2。 我是这个Oracle表单,Oracle Reports等的新手。在安装过程中,它要求输入密码。我进去了。编写的是在SYS和SYSTEM数据库帐户中使用您的密码。安装完成后,我启动了SQL * Plus。我输入SYSTEM作为用户名和密码。

                 ERROR:
                 ORA-12154 :TNS:could not resolve the connect identifier specified

我也尝试过SYS作为我的用户名,但仍然是同样的错误。我打开cmd并键入:

                 C:\>sqlplus /nolog
                 SQL> conn / as sysdba
                 connected.
                 SQL> desc dba_users
                 NAME           NULL?           TYPE
                 ------         ------          --------
                 USERNAME                       VARCHAR2(30)
                 USERID                         NUMBER
                 PASSWORD                       VARCHAR2(30)
                 . 
                 .

                 SQL>select username,password from user_dba;
                 USERNAME                    PASSWORD
                 -----------                 -------------
                 SYS                         XXXXXXXXXX
                 SYSTEM                      XXXXXXXXXX
                 SCOTT                       XXXXXXXXXX
                 HR                          XXXXXXXXXX
                 . 
                 .  

所有密码都是以复杂的形式编写的,为了简化它我想改变任何一个密码。所以,我写道:

                SQL> alter user HR identified by password;
                user altered.

然后我尝试在打开SQL * Plus时使用它们。那没起效。我现在不知道主机字符串是什么。我可以获得有关用户,密码和主机字符串的完整信息吗?我试图搜索tnsnames.ora文件,但无法找到。所有文件,文件夹都很乱。

1 个答案:

答案 0 :(得分:1)

用户名和密码:

SELECT  USERNAME, PASSWORD
FROM    DBA_USERS;

密码始终是加密的,因此您不会从中获取太多信息

主机名:

SELECT sys_context('USERENV', 'HOST') FROM DUAL;

sys_context适用于许多很多事情:

http://psoug.org/reference/sys_context.html

如果您有权访问命令行,则可以使用侦听器状态来获取更多信息。

LSNRCTL> STATUS
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=net)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.0.0 -
Beta
Start Date                15-JAN-2008 12:02:00
Uptime                    0 days 0 hr. 5 min. 29 sec
Trace Level               support
Security                  OFF
SNMP                      OFF
Listener Parameter File   /oracle/network/admin/listener.ora
Listener Log File         /oracle/network/log/listener.log
Listener Trace File       /oracle/network/trace/listener.trc

Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=net)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=sales-server)(PORT=2484)))

Services Summary...
Service "sales1.us.example.com" has 1 instance(s).
  Instance "sales", status READY, has 1 handler(s) for this service...
Service "sales2.us.example.com" has 1 instance(s).
  Instance "sales", status READY, has 2 handler(s) for this service...
The command completed successfully

来源:http://docs.oracle.com/cd/E11882_01/network.112/e10835/lsnrctl.htm#CIHGHCGJ (Oracle数据库网络服务参考)