Oracle TNSLSNR Full Client
Most of admins neglect setting password on TNSlsnr Clients for Oracle databases. Oracle ensures that you can either connect to TNSlsnr on a localhost or through mapping to a remote Oracle database using .ora files.
This is not the case anymore Based on Jwa perl client.
This client is a FULL client, with Packet crafting reassembled.
Supports all the commands as the version that is shipped with Oracle.
Allow you to totally control an unprotected Oracle Database Server remotelly , without having to map or install Oracle.
Download Here
Commands Supported
ping , version , service , status change_password, help, reload, save_config, set connect_timout set display_mode, set log_directory , set log_file , set log_status , show , spawn stop
this version works on Oracle9i.
On Oracle 10g only "version" command is working.
This is feedback i got from Pete Finnigan Oracle Security
The 10g listener is by default protected by local authentication rather than by a password like in the 9i and lower listener. This means that because it is protected you cannot use commands like status which can only be used on an un-protected listener. This is the reason that the version command still works, because it can be executed on a password or locally authenticated listener. To be able to get the lsnrctl tool to work remotely you need to disable local authentication.
Currently, i am working on 10g version with D.O.S check , well if you can't own it see if you can bring it down!!
If you have Oracle10g on a public IP and want to share it for testing let me know , just send me the IP by Email
I recieved feedback from Ivan Saez. Very helpful.
On 10G, when local authentication is enabled, sends a rediret packet back to tnscmd. The packet is :
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=#12543.2)))
The key points to a special file
in /var/tmp/.oracle (for example):
oracle@Siemens:/var/tmp/.oracle > ls -lrt total 0
srwxrwxrwx 1 oracle oinstall 0 2005-11-03 15:57 s#12529
相关文档：
仍然使用SCOTT用户来操作：
1、 显示工资比部门30的所有员工的工资都高的员工的信息：
Select * from emp where sal>all(select sal from emp where deptno=30);
2、 显示工资比部门30的任意一个员工的工资高就可� ......
1、固定列数的行列转换
如
student subject grade
--------- ---------- --------
student1 语文 80
student1 数学 70
student1 英语 60
student2 语文 90
student2 数学 80
student2 英语 100
……
转换为
语文 数学 英语
student1 80 70 60
student2 90 80 100
……
语句如下：s ......
1个实例
create table tjob2(tt date);
创建一个存储过程
create or replace procedure t26 is
begin
insert into tjob2 values(sysdate);
commit;
end t26;
创建job，每分钟执行一次
SQL> declare
2 tjob number;
3 begin
4 sys.dbms_jo ......
用Java来操作数据库，有如下几种方式：
1JDBC-ODBC桥：ODBC数据源在操作系统层面给予了支持，我们可以不用了解底层到底是封装的哪种数据源，也照样可以完成对数据的操作。但是它有平台依赖性，不太推荐使用。
2Java到本地API
3Java到网络协议
4Java到数据库协议：速度最快
连接数据库可以分为四步：
A加载驱动程序（� ......
如何远程判断Oracle数据库的安装平台
select * from v$version;
查看表空间的使用情况
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_name;
SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES ......
