Is it possible to records another machine ip addree in audit table

Question

Hai
I have written system event trigger,it records username, ip address and time in audit table when user logged on database , The database reside on xx machine ( 10.0.0.88 ipaddess ). Is it possible to records another machine ip addree in audit table while accessing database from another machine?
example we have another database on xxx machine (10.0.0.2 ip address),when accessing database from xxx(10.0.0.2) to xx (10.0.0.88),the xxx node ip address will be stored in audit table?.
Thanks in advance
Regards
mohan
CREATE OR REPLACE TRIGGER On_Logon
AFTER LOGON
ON database
declare
db_name VARCHAR2(50);
addr varchar2(80);
x varchar2(20);
begin
db_name := ora_database_name;
select utl_inaddr.get_host_address into x from dual;
if ( ora_sysevent ='LOGON')
then x:=utl_inaddr.get_host_address;
insert into log1
select ora_sysevent,ora_login_user,ora_database_name,utl_inaddr.get_host_address,sysdate
from dual;
end if;
end;
SQL> select * from log1;
OPERATION USERNAME DATABASE IP_ADDR TIME
LOGON MOHAN1 ISOLA6.US.ORACLE.COM 10.0.0.88 11-APR-02
Based on system events trigger how to find out which user from which machine (ip address) accesing database?
example:
CREATE OR REPLACE TRIGGER On_Logon
AFTER LOGON
ON database
declare
db_name VARCHAR2(50);
addr varchar2(80);
x varchar2(20);
begin
db_name := ora_database_name;
select utl_inaddr.get_host_address into x from dual;
if ( ora_sysevent ='LOGON')
then x:=utl_inaddr.get_host_address;
insert into log1
select ora_sysevent,ora_login_user,ora_database_name,utl_inaddr.get_host_address,sysdate
from dual;
end if;
end;
SQL> select * from log1;
OPERATION USERNAME DATABASE IP_ADDR TIME
LOGON MOHAN1 ISOLA6.US.ORACLE.COM 10.0.0.88 11-APR-02

Answer 1

Providing you're on 8i+ this will give you the IP address from which th eclient is connected:
SELECT sys_context('userenv', IP_ADDRESS) FROM dual;
Bear in mind that many network applications assign IP Addresses dynamically, so depending on how your network is segmented, the same machine can have very different IP addresses from day to day. If this is just an internal system you're auditing then you might find this call more useful:
SELECT sys_context('userenv', TERMINAL) FROM dual;
This returns the network's ID for the machine, and this is non-varying (unless network admin change it explicitly - but why would they?). This call is also available in the older, deprecated USERENV function:
SELECT userenv('TERMINAL') FROM dual;
rgds, APC