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EXECUTE ORACLE 8 SQL STATEMENTS WITHOUT LOGIN

Posted on 2011-02-27
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Last Modified: 2013-12-26
Dear Experts

Is it possible to execute Sql Statements(Insert, Update, select) withput login to a database ? using a connection string . I am trying to log all failed / successful logins from a powerbuilder application. I tried the Connect & Connect using in powerbuilder but it didn't help.

Thanks
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Question by:m_jundi
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19 Comments
 
LVL 3

Expert Comment

by:gopisera
ID: 34991120
Unable to get your question.  can you give in detaii

does the tns entires are good.
Please check the tns entires and try to connect

username/password@tnsentry



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LVL 15

Expert Comment

by:Aaron Shilo
ID: 34991126
hi

what you need is a trigger at the database level check this :

connect sys/manager;
 
create table
   stats$user_log
(
   user_id           varchar2(30),
   session_id           number(8),
   host              varchar2(30),
   last_program      varchar2(48),
   last_action       varchar2(32),
   last_module       varchar2(32),
   logon_day                 date,
   logon_time        varchar2(10),
   logoff_day                date,
   logoff_time       varchar2(10),
   elapsed_minutes       number(8)
)
;
 

Designing a logon trigger

 
create or replace trigger
   logon_audit_trigger
AFTER LOGON ON DATABASE
BEGIN
insert into stats$user_log values(
   user,
   sys_context('USERENV','SESSIONID'),
   sys_context('USERENV','HOST'),
   null,
   null,
   null,
   sysdate,
   to_char(sysdate, 'hh24:mi:ss'),
   null,
   null,
   null
);
END;
/
0
 
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Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 63 total points
ID: 34991256
ashilo,
 AFTER LOGIN would not be able to catch failed logins ...
 also, that feature is only available as from oracle 9.x, and not in oracle 8

so:
>Is it possible to execute Sql Statements(Insert, Update, select) withput login to a database ?
no, that is not possible

so, you could only log them to something else than the oracle database in the first place
0
 

Author Comment

by:m_jundi
ID: 34991297
Hello

Thanks ashilo for the help, but as angelIII says , this applys for successful login only

Thanks
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LVL 15

Expert Comment

by:Aaron Shilo
ID: 34991304
ok
i dug into the back of my head to try and remember some oracle audit stuff

you can use this  :

audit connect whenever not successful;

view results of failed logon
select * from system.aud$;
0
 

Author Comment

by:m_jundi
ID: 34991615

select * from system.aud$
                     *
ORA-00942: table or view does not exist
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LVL 15

Expert Comment

by:Aaron Shilo
ID: 34991623
you need to be connected with a POWER user as SYSTEM or SYS ?
0
 

Author Comment

by:m_jundi
ID: 34991648
I am already connected as System
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LVL 15

Expert Comment

by:Aaron Shilo
ID: 34991663
ok
this happend to me once before try this.

select * from aud$;
0
 
LVL 142

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 34992017
I fear that this feature is also new in oracle 9 ...
0
 
LVL 15

Expert Comment

by:Aaron Shilo
ID: 34992070
ye ANGELLLL
your right i just checked it on one of our legacy systems.

sorry m_jundi

BTW : since other audit options are available in 8i your suppose to have the aud$ table.
0
 

Author Comment

by:m_jundi
ID: 34994775
I have Oracle 8i, I am able to brows this view but no records were added to this view, it is always empty, shoud I enable Audit some where ? like init.ora?

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LVL 34

Assisted Solution

by:johnsone
johnsone earned 62 total points
ID: 34998111
Just to clarify.  You can audit login failure with a database level trigger.  You cannot use AFTER LOGON as was posted before, you need to use AFTER SERVERERROR.  Then you check for a login error message.

The base shell can be found in the doc here:

http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_7004.htm

However as has been mentioned, this is not available in 8i.
0
 

Author Comment

by:m_jundi
ID: 34998172
ashilo, it worked, need to Activate Audit Trail from Init.ora,
let me take a look at aud$ if it has what I need.
0
 
LVL 11

Expert Comment

by:Akenathon
ID: 35000296
You just need:

AUDIT CREATE SESSION;

That will create audit records BOTH for successful and unsuccessful attempts. Then, instead of going to SYS.aud$ (it's NOT system, it's SYS), you should use the view which was made for that exact purpose:

SELECT * FROM DBA_AUDIT_SESSION;

You need to set AUDIT_TRAIL=DB and bounce the instance. As a bonus, you'll get some statistics on resource consumption after each session ends. From time to time, you ought to backup and TRUNCATE SYS.AUD$, just keep an eye on it.

Connections AS SYSDBA or SYSOPER do not create records in sys.aud$ (because they can happen even when the instance is NOT started, so there's no way to get the records inserted). Look for audit evidence of those in $ORACLE_HOME/rdbms/audit if you need it :-)
0
 

Author Comment

by:m_jundi
ID: 35815140
Actuallyl, it doesn't give enough info. as required
0
 
LVL 29

Expert Comment

by:leonstryker
ID: 37271901
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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