Re: Track Oracle users in Oracle connecting through Tuxedo

Check the dba system tables and views (specially the dynamic v$ ones). You will find
usefull session information (user, from where, program name, blocking conditions...).
As a help, you can use the oracle dba scripts or use a graphical tool to show you
a report using this tables/views.
R.G.
Ravi wrote:
I am an Oracle DBA currently maintaining Oracle 8.0.6 database on UNIX. We have Tuxedo
as our middleware, but unfortunately I don't have access to this server. How as a
DBA can I determine who is logging into my database, user session info, etc while
connected to Oracle.
Thanks,
Ravi

V$session and v$process in this case wouldn't be helpful because the username will be showing the same database account for all the tuxedo users and osuser always shows the same os user account.
Could somebody tell me how to distinguish and identify what the tuxedo user is?
Thanks!
Ravi.

Similar Messages

Non-Oracle connection through HS issue

Greetings!
I have created a HS to a MySQL server and from SQL> this works fine as a dblink
create database link "dvb_mysqllink"
connect to "sord_ro"
identified by "<pwd>"
using 'mysqlSORDdev_cmdb';
SQL> select 'foo' from dual@dvb_mysqllink;
'FOO'
foo
What do I do to use this HS from OWB?
1) In "Design Center" I select Databases->Non-Oracle->ODBC->"new" (via right click)
2) I name the Module "MYSQL_HS"
3) I edit (and rename) the resulting Location to MYSQL_HS_LOCATION and use:
4) Type: HOST:PORT:SERVICE
5) USER NAME: (username on Mysql same as dblink above)
6) Password: (password on Mysql same as dblink above)
7) Host (the database that holds the HS listener, same server the dblink is created in)
8) Port 1521
9) Service Name: "mysqlSORDdev_cmdb" (the same DNS/TNSLISTENER value used in the dblink)
when I hit test connection I get:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][MySQL][ODBC 3.51 Driver]Access denied for user 'SORD_RO'@'DSS0W023' (using password: YES) (SQL State: S1000; SQL Code: 1045)
ORA-02063: preceding 2 lines from OWB_961
I know the user/name password are correct as they're the same I use when creating the dblink via SQL....
Should I not use ODBC? Did I bump my head somewhere?
Any help here would be great.
Thanks in advance,
Dave-

You have to do the following steps:
1) In "Design Center", select Databases->Non-Oracle->ODBC->"new" (via right click)
2) Name the Module
3) Type Database Link
4) From Location: select the location of the database you have configured the databse link.
5) Database Link: if all is correct, you can select here the "dvb_mysqllink" databse link.
6) Test the connection.
I did those steps and it works, but i have a problem. When i want to import some tables, i can see the tables in the import wizard, but it don't import anything. The wizard is closed with no messages. Help, please!!

Oracle Connectivity through struts JDK 1.6

Hello,
I am upgrading my existing application (JDK 1.4 and Tomcat 5.0) to a new environment (JDK 1.6 and Tomcat 5.5). The framework used is struts. I have downloaded the "ojdbc.jar" file in common/lib directory as well but when I am trying to get a connection from the data source (which is declared in the data-sources part of struts-config.xml file), the system hangs. No error is being thrown. The same application does work when i create a connection using normal JDBC(DriverManager & class.ForName). I have searched through various posts and the only suggestion i found is using "ojdbc.jar" file. Bot to no avail. please suggest what should I do.
thanks

you can.
See the changing your JVM section for Studio at the following pages for instructions on what to do http://download-llnw.oracle.com/docs/cd/E13154_01/bpm/docs65/installguide/index.html
Thanks,
Mike

How to restrict grant connect through with Data Vault

I need to restrict the ability to grant proxy privileges in the database. This is the statement: alter user USER_A grant connect through USER_B;
I tried creating this rule that looks at the sql text for %CONNECT THROUGH% in the statement and then added it to the "Can Maintain Own Account" Rule Set which is attached to the Alter System command but it doesn't appear to be working. How can I get this working? Is my rule that I created correct. Ultimately what I want to do is allow proxies to be created for most users but just restrict only certain special users.
BEGIN
dbms_macadm.delete_rule(rule_name => 'NO_PROXY_PRIVILEGES');
DBMS_MACADM.CREATE_RULE(rule_name => 'NO_PROXY_PRIVILEGES',
rule_expr => 'INSTR(UPPER(DVSYS.DV_SQL_TEXT),''%CONNECT THROUGH%'') = 0');
END;I am running Oracle 11.2.0.2 Enterprise on Windows Server 2008R2
Thank you.

You may get a better answer in the security forum:
Security
That being said - there are authorization checks that you can create for SE16.
Create an authorization field via SU20. Create the object via SU21.
Create a role. Add transaction SE16 to the role. Create a profile. Activity would be display. And then you can add the objects that you created.
Again you may get a better answer from someone who does security everyday. I'd suggest posting in the security forum.
Michelle

Can I do a "connect through" connection?

Hallo, all!
I'm currently using SqlDeveloper 4.0 EA2,
I tried to set a connection up to do the equivalent of the SqlPlus Syntax:
     connect MyUser[Scott]/MyPassword@MyDatabase
I've not found a way to do the same in SqlDeveloper, but of course I might have
overlooked something.
Any idea whether this can be done in SqlDeveloper, and how to do it?
Thanks in advance
    Michael

Hi, Gary!
Thank you for your answer and the pointer to Bary McGillin's blog.
Unfortunately, the situation he describes is slightly different from the situation I described.
From Bary McGillin's blog:
The proxy privilege is granted using
alter user target grant connect through proxy;
Now, there is a slightly different way to grant connect through privileges which does not require the use of a proxy, i.e.
alter user target grant connect through my_personal_user;
The main difference as far as I'm concerned is that this allows me to "become" user target without knowing (or caring about) their passwords.
This is quite convenient in a situation where I have to do thing on behalf of half a billion users.
So, I'm looking for a way to set up a connection which allows my personal user to connect as target with only my personal user's password having
to be specified in the connection properties.
Sorry for not having been specific enough in my first post. Hope this is describing it clearer.
All the best
   Michael

Problem in connecting to oracle DB through NWDS

Hi All,
I cannot establish a connection to the oracle DB through the below mentioned code written in webdynpro java. I am new to this area.
Please check what is wrong with this code and suggest me how to resolve this......I have pasted the classes12.jar in the lib folder.
import oracle.jdbc.driver.OracleDriver;
ResultSet resSet = null;
Statement Stat = null;
Connection conn = null;
PreparedStatement pstmt= null;
String url = "jdbc:oracle:thin:@local server:1521:SID";
String user = "ABC";
String password = "123";
try
         conn = DriverManager.getConnection(url,user,password);
         Stat = conn.createStatement();
         pstmt = conn.prepareStatement("Select * from tablename");
         resSet = pstmt.executeQuery();
          wdComponentAPI.getMessageManager().reportSuccess("Result"+resSet);
if (resSet != null)
resSet.close(); // close ResultSet
Stat.close(); // close Statement
conn.close();
catch (Exception e)
e.printStackTrace();
Regards,
Athulya.

Hi ,
import oracle.jdbc.driver.OracleDriver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
ResultSet resSet = null;
Statement Stat = null;
Connection conn = null;
PreparedStatement pstmt= null;
String url = "jdbc:oracle:thin:@local server:1521:SID";
String user = "ABC";
String password = "123";
try
conn = DriverManager.getConnection(url,user,password);
Stat = conn.createStatement();
pstmt = conn.prepareStatement("Select * from tablename");
resSet = pstmt.executeQuery();
wdComponentAPI.getMessageManager().reportSuccess("Result"+resSet);
if (resSet != null)
resSet.close(); // close ResultSet
Stat.close(); // close Statement
conn.close();
catch (Exception e)
e.printStackTrace();
Regards,
Athulya

Visual Studio 2010 64bit cann't connect Oracle database through 64bit ODBC Driver

Hi,
I am developing an 64bit And-In software. My OS is windows7 64bit Ultimate. Developer tool is
Microsoft Visual Studio 2010 Ultimate 64bit any-CUP.
Server is SUN server and Oracle database 10.2.0.5 64bit enterprise edition.
I have installed instantclient-odbc-win64-10.2.0.5 on my computer.
I am able to connect through the command line sqlplus user/pass@server.
In date source(c:\windows\system32\odbcad32.exe), ODBC Driver connection successful.
But in VS2010 C#, use Tools -> Connect Database,I get an error 193 (Oracle in
instantclient10_2,c:\ora10_64\SQORA32.dll) cann't be loaded.
SQORA32.dll is 32bit ODBC Driver or 64bit ODBC Driver?
How can I connect database with vs2010 64bit?
Regards

There is no Visual Studio 2010 Ultimate 64bit as far as I know. It's a 32 bit app. Generally you'd need to install a 32 bit client to use the 32 bit tools.
Hope it helps,
Greg

How to connect Oracle database through Microsoft ODBC?

My ODBC Configuration:
DSN name is :db
Username : india
Server :db.world
Now, i am trying to connect with oracle database through SQL*plus or TOAD.
But, it is giving the following error.
ORA-03121: no interface driver connected - function not performed
Database version : 9.2.0.1.0
Operating System : Microsoft Windows XP
ODBC Version : 2.575.1117.00
I am trying to connect with the database like this:
Username : india
Password : india
Database : ODBC:db
Can i connect like this otherwise whether i need install any other supporting driver?

Now, i am trying to connect with oracle database
through SQL*plus or TOAD.
But, it is giving the following error.
ORA-03121: no interface driver connected -
function not performed
I am trying to connect with the database like this:
Username : india
Password : india
Database : ODBC:db
As already stated, you can not use the DSN in SQL*Plus (nor TOAD, afaik)!
I can reproduce the error message with the following:
C:\>sqlplus a/b@ODBC:c
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 4 21:34:58 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
ERROR:
ORA-03121: no interface driver connected - function not performedLooking up the message, it says:
Cause: A SQL*Net version 1 prefix was erroneously used in the connect string
Looks like this has nothing to do with your DSN - it is more a matter of not using a proper connection string.
If 'Test Connection' works then you should probably proceed to work with Crystal Reports, using the DSN in question.
However, you should note that the old MS ODBC driver for Oracle was designed for OCI 7 (and for databases 7.x-8.x) and is now considered obsolete by both MS and Oracle.
Deprecated MDAC components and MS KB Article 244661.
Use the Oracle ODBC driver included with a supported Client version instead.
Edit:
Clarifying and adding references.
Message was edited by:
orafad

How to connect oracle data through BlazeDS in flex 4

How to connect oracle data through BlazeDS in flex 4

Hi
               If u want to connect to the database oracle just paste the Ojdbc14.jar file into the lib folder of blazeds project..
                         Normally blazeds distribution version contains blazeds.war file... upload that war file to the tomcat or any other application server..
                      u will get the build path and in lib folder paste the ojdbc14.jar file to connect to the oracle and do u r stuff at server side java ....
                  if this will reslove ur problem please mark as answered..

RE: (forte-users) Forte not letting go of Oracle connections+ RE: (fort

The bug was just reported yesterday so they might not have it available to
the public for a while. I am guessing this bug has been around since 3.M.?
and its very easy to verify it if its happening in your environment. Also I
have been talking to other user that are not using Oracle (Sybase instead)
who are also seen the same problem. I think this is a problem across all
database because there is some fundamental event or process that is not
taking place to close database connections. But just to be safe verify it
in your test environment before moving to 3.5. To verify if its happening
in your Forte version just create a small application that connects to the
database and run it in debug mode. Log into the database and then stop the
debug session. The connection will still be open. This will also occur
when you use the running man or in a deployed application.
ka
-----Original Message-----
From: Labeaux Schiek [mailto:DHSV017dhs.state.il.us]
Sent: Thursday, March 01, 2001 7:21 AM
To: kamran.aminlendware.com; Forte-userslists.xpedior.com
Subject: RE: (forte-users) Forte not letting go of Oracle connections +
RE: (forte-users) SQL Server Maximum DB Processes already allocated.
Hi Kamran,
I just looked up bug # 54610 in Cyber Support and it is not there yet, so a
question.
In your opinion, does this effect all databases? We are using DB2 and
considering going to 3.5 . Are we going to see the same problems you have
had with Oracle?
-thanks
-labeaux
"Amin, Kamran" <kamran.aminlendware.com> 02/28/01 05:28PM >>>Update on my problem. Well now its everybody's problem. Forte has
conformed the bug. Bug number 54610 for your reference.
thanks to everybody for the help..
ka
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

The bug was just reported yesterday so they might not have it available to
the public for a while. I am guessing this bug has been around since 3.M.?
and its very easy to verify it if its happening in your environment. Also I
have been talking to other user that are not using Oracle (Sybase instead)
who are also seen the same problem. I think this is a problem across all
database because there is some fundamental event or process that is not
taking place to close database connections. But just to be safe verify it
in your test environment before moving to 3.5. To verify if its happening
in your Forte version just create a small application that connects to the
database and run it in debug mode. Log into the database and then stop the
debug session. The connection will still be open. This will also occur
when you use the running man or in a deployed application.
ka
-----Original Message-----
From: Labeaux Schiek [mailto:DHSV017dhs.state.il.us]
Sent: Thursday, March 01, 2001 7:21 AM
To: kamran.aminlendware.com; Forte-userslists.xpedior.com
Subject: RE: (forte-users) Forte not letting go of Oracle connections +
RE: (forte-users) SQL Server Maximum DB Processes already allocated.
Hi Kamran,
I just looked up bug # 54610 in Cyber Support and it is not there yet, so a
question.
In your opinion, does this effect all databases? We are using DB2 and
considering going to 3.5 . Are we going to see the same problems you have
had with Oracle?
-thanks
-labeaux
"Amin, Kamran" <kamran.aminlendware.com> 02/28/01 05:28PM >>>Update on my problem. Well now its everybody's problem. Forte has
conformed the bug. Bug number 54610 for your reference.
thanks to everybody for the help..
ka
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

Unable to connect to Oracle 8i through a java program

Hi all,
I have Oracle 8i standard edition. Does this allow remote clients such as a java program trying to connect through a JDBC program?

Yes, you should be able to connect to the Oracle database as long as you have your listener listening on a particular port, your JDBC URL has all the necessary info and you are using Oracle's JDBC driver.

Connecting Oracle DataBase through WebDynpro

Hi,
I created a Dynamic table, now I should display the data from Oracle Database. I tried in many various ways to connect to database, but the data is not retrieving.
Can u explain the reasons and give necessary coding to retrieve the data.
Its very very urgent.

Hi
I think you can do using the APIs provided by SAP.
Check this link
JDBC Reference
or
Try connectinc using lookup.
try{
InitialContext ctx=new InitialContext();
javax.sql.DataSource ds=(javax.sql.DataSource)ctx.lookup("jdbc/SAPJ2EDB");
java.sql.Connection con=ds.getConnection();
java.sql.Statement stmt=con.createStatement();
con.close();
catch(Exception e)
wdComponentAPI.getMessageManager().reportException("Exception "+e,true);
Check this thread moreuseful.
WebDynpro and Oracle Connection
Please Check these threads
Re: I need a j2ee code for getting data from oracle database
Re: oracle connection
Re: problem with displaying records from the database in a table ui element
See this sample application and help
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/library/uuid/f0b0e990-0201-0010-cc96-d7ecd2e51715
I hope these links will help u resolve your problem.
All The Best
Priyanka
Do Reward Points

Random SP2 error when starting oracle process through SHELL script

Hi All,
I am trying to process data in n-Number of tables through a package. The package is called through a shell script to create start data processing. All calls to the package are in a sql script which is basically exec calls-
exec package.process ('T1','some param');
exec package.process ('T1','some param');
exec package.process ('T..n','some param');
I have a shell script which I use to execute commands from the sql script. There is a reason behind using shell script. For some strange reason, I keep on getting -
ERROR: logon denied - check for valid user with valid privileges
SP2-0640: Not connected
SP2-0641: "EXECUTE" requires connection to server
SP2-0640: Not connected
for some EXEC calls. Problem is, errors are generated at random. So in one run, I get error for T10,T11 and then in next run I might get for some other tables.
However, when I am running the sql script from the sql prompt, all calls to the package are executed without any problem.
This makes me think, it is something to do with the way database connection being initiated through UNIX.
Has anyone faced similar issue? Your help/gudence is much appreciated.
DB: Oracle 10.2.0.5
OS: SUN Solaris 10
Thanks in advance.

Login credentials are provided inside the shell script.
I did put a sleep(10) after EOF but no help. As mentioned if I run script file from sql promt, it runs without any hiccup. So it is the connection through the UNIX that is causing issue.
As pointed out by Sybrand, I agree that it does not make a sense to connect and commit after every sql statement. So decided to change the shell script and so far, the result from my initial tests on a sample data is quite encouraging. Hopefully I will have a solution.
But it will be nice to know why SHELL is doing what it is doing!!
Legacy prog are sometime big time eye-openers..;)

Certificates in lieu of Oracle connection Manager for our Applets -- Help!!

I support an application named IDEA out of New York. The IDEA application is an INTRANET application for use within our company Firewall.
Currently, the IDEA application's front end resides on a Windows 2000 Server running IIS 5 and JRun 3.0. The back-end runs on Oracle 8.1.7 database on a UNIX Database Hosting Utility (DHU). Our applets communicate with the back-end database using Oracle Connection Manager that is installed on the Web Host.
We are trying to migrate to the DWeb environment (Linux cluster). The linux cluster is running Apache Tomcat. We have been told that installing Oracle connection manager is not a viable solution (our company does not support it). Because of this our applets cannot communicate with our database. Below is a brief description of this limitation and also the work-around.
====================================================================================================================================================
Connecting to the Database through the Applet
The most common task of an applet using the JDBC driver is to connect to and query a database. Because of applet security restrictions, unless particular steps are taken an applet can open TCP/IP sockets only to the host from which it was downloaded (this is the host on which the Web server is running). This means that without these steps, your applet can connect only to a database that is running on the same host as the Web server.
If your database and Web server are running on the same host, then there is no issue and no special steps are required. You can connect to the database as you would from an application.
As with connecting from an application, there are two ways in which you can specify the connection information to the driver. You can provide it in the form of host:port:sid or in the form of a TNS keyword-value syntax.
For example, if the database to which you want to connect resides on host prodHost, at port 1521, and SID ORCL, and you want to connect with user name scott with password tiger, then use either of the two following connect strings:
using host:port:sid syntax:
String connString="jdbc:oracle:thin:@prodHost:1521:ORCL";
conn = DriverManager.getConnection(connString, "scott", "tiger");
using TNS keyword-value syntax:
String connString = "jdbc:oracle:thin:@(description=(address_list=
(address=(protocol=tcp)(port=1521)(host=prodHost)))
(connect_data=(sid=ORCL)))";
conn = DriverManager.getConnection(connString, "scott", "tiger");
If you use the TNS keyword-value pair to specify the connection information to the JDBC Thin driver, then you must declare the protocol as TCP.
However, a Web server and an Oracle database server both require many resources; you seldom find both servers running on the same machine. Usually, your applet connects to a database on a host other than the one on which the Web server runs. There are two possible ways in which you can work around the security restriction:
You can connect to the database by using the Oracle8 Connection Manager.
or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
Connecting to a Database on a Different Host Than the Web Server
If you are connecting to a database on a host other than the one on which the Web server is running, then you must overcome applet security restrictions. You can do this by using either the Oracle8 Connection Manager or signed applets. ====================================================================================================================================================
It was suggested that we implement signed applets (it is our only alternative at this time). This is where, hopefully, you can help me. We are unfamiliar with using certificates and signing applets. We need to obtain certificates that will allow our applets to connect to our oracle database on the DHU. What kind of certificates do we use? Are their coding examples of how to use these certificates? We have a CA within our company but they cannot tell us what kind of certificates we need. How many certificates do we need? Do we install any certificates on the backend database server? Any information would be greatly appreciated. We are basically trying to get our applet to work outside the sandbox by establishing a connection to the database server.Thanks in advance for your time.

or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
If you want to connect to the database from the applet there is a third option.
Since this is an intranet application you have control over the desktops using this
application. In our company the jre ignores signed applets (as it should) because
it gives control to the user to run potentially harmfull applets from the Internet.
The way to dish out special privileges to applets is the policy, put a policy file on
you intranet and have the jre use it by specifying its URL in the java.security.
Here is some more info about security configuration of the jre:
http://forum.java.sun.com/thread.jspa?threadID=646161&tstart=45
reply 3
We use Oracle jinitiator to run Oracle forms but I am not involved in that project
and do not know a lot about it. It does perform quite good though.

Certificates in lieu of Oracle connection Manager for our Applets

I support an application named IDEA out of New York. The IDEA application is an INTRANET application for use within our company Firewall.
Currently, the IDEA application's front end resides on a Windows 2000 Server running IIS 5 and JRun 3.0. The back-end runs on Oracle 8.1.7 database on a UNIX Database Hosting Utility (DHU). Our applets communicate with the back-end database using Oracle Connection Manager that is installed on the Web Host.
We are trying to migrate to the DWeb environment (Linux cluster). The linux cluster is running Apache Tomcat. We have been told that installing Oracle connection manager is not a viable solution (our company does not support it). Because of this our applets cannot communicate with our database. Below is a brief description of this limitation and also the work-around.
====================================================================================================================================================
[i][i][i]Connecting to the Database through the Applet
The most common task of an applet using the JDBC driver is to connect to and query a database. Because of applet security restrictions, unless particular steps are taken an applet can open TCP/IP sockets only to the host from which it was downloaded (this is the host on which the Web server is running). This means that without these steps, your applet can connect only to a database that is running on the same host as the Web server.
If your database and Web server are running on the same host, then there is no issue and no special steps are required. You can connect to the database as you would from an application.
As with connecting from an application, there are two ways in which you can specify the connection information to the driver. You can provide it in the form of host:port:sid or in the form of a TNS keyword-value syntax.
For example, if the database to which you want to connect resides on host prodHost, at port 1521, and SID ORCL, and you want to connect with user name scott with password tiger, then use either of the two following connect strings:
using host:port:sid syntax:
String connString="jdbc:oracle:thin:@prodHost:1521:ORCL";
conn = DriverManager.getConnection(connString, "scott", "tiger");
using TNS keyword-value syntax:
String connString = "jdbc:oracle:thin:@(description=(address_list=
(address=(protocol=tcp)(port=1521)(host=prodHost)))
(connect_data=(sid=ORCL)))";
conn = DriverManager.getConnection(connString, "scott", "tiger");
If you use the TNS keyword-value pair to specify the connection information to the JDBC Thin driver, then you must declare the protocol as TCP.
However, a Web server and an Oracle database server both require many resources; you seldom find both servers running on the same machine. Usually, your applet connects to a database on a host other than the one on which the Web server runs. There are two possible ways in which you can work around the security restriction:
You can connect to the database by using the Oracle8 Connection Manager.
or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
Connecting to a Database on a Different Host Than the Web Server
If you are connecting to a database on a host other than the one on which the Web server is running, then you must overcome applet security restrictions. You can do this by using either the Oracle8 Connection Manager or signed applets. ====================================================================================================================================================
It was suggested that we implement signed applets (it is our only alternative at this time). This is where, hopefully, you can help me. We are unfamiliar with using certificates and signing applets. We need to obtain certificates that will allow our applets to connect to our oracle database on the DHU. What kind of certificates do we use? Are their coding examples of how to use these certificates? We have a CA within our company but they cannot tell us what kind of certificates we need. How many certificates do we need? Do we install any certificates on the backend database server? Any information would be greatly appreciated. We are basically trying to get our applet to work outside the sandbox by establishing a connection to the database server.
Thanks in advance for your time.

Eston,
Have you searched SUN's java Web site? Maybe this article will help:
http://java.sun.com/developer/technicalArticles/Security/Signed/index.html
Good Luck,
Avi.

Re: Track Oracle users in Oracle connecting through Tuxedo

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