Hi Ahmed,
It may be useful for you: Finding the source of failed login attempts. (Doc
ID 352389.1)
<https://support.oracle.com/epmos/faces/DocContentDisplay?id=352389.1>
On Thu, Jan 27, 2022 at 7:18 PM Andy Sayer <andysayer@xxxxxxxxx> wrote:
0 means the listener successfully passed the request to a service (it did).
I would recommend using a server error trigger to log ora-1017 somewhere.
Something like
https://www.alak.cc/2020/12/oracle-trigger-to-log-logon-denied-ora.html?m=1
I would personally log it to a table rather than the alert log.
Thanks,
Andy
On Thu, 27 Jan 2022 at 16:15, ahmed.fikri@xxxxxxxxxxx <
ahmed.fikri@xxxxxxxxxxx> wrote:
Thanks Nenad.
So one had to enable this explicitly. I was just wondering what the 0 at
the end of the line in the listener.log file would mean.
Best regards
Ahmed
-----Original-Nachricht-----
Betreff: RE: failed connection attempts in listner.log file
Datum: 2022-01-27T16:59:41+0100
Von: "Noveljic Nenad" <nenad.noveljic@xxxxxxxxxxxx>
An: "ahmed.fikri@xxxxxxxxxxx" <ahmed.fikri@xxxxxxxxxxx>, "list, oracle" <
oracle-l@xxxxxxxxxxxxx>
Hi Ahmed
Listener log contains entries for TCP connections to the listener
process.
Listener doesn’t know about logon status, because it just forks a
dedicated server process that handles authentication in the database.
You’d need to configure audit session for tracking failed logons.
Best regards,
Nenad
*From:* oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx> *On
Behalf Of *ahmed.fikri@xxxxxxxxxxx
*Sent:* Donnerstag, 27. Januar 2022 16:54
*To:* list, oracle <oracle-l@xxxxxxxxxxxxx>
*Subject:* failed connection attempts in listner.log file
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Hi all,
I'm trying to find out non-successful connection attempts
In the listener.log file I see entries like this:
27-JAN-2022 15:18:38 *
(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=O12CPDB)(CID=(PROGRAM=C:\Program?Files\PLSQL?Developer?12\plsqldev.exe)(HOST=LAPTOP-2LQOLENG)(USER=kirux)))
* (ADDRESS=(PROTOCOL=tcp)(HOST=172.17.0.1)(PORT=60836)) * establish *
O12CPDB * 0
27-JAN-2022 15:30:24 *
(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=O12CPDB)(CID=(PROGRAM=C:\Program?Files\PLSQL?Developer?12\plsqldev.exe)(HOST=LAPTOP-2LQOLENG)(USER=kirux)))
* (ADDRESS=(PROTOCOL=tcp)(HOST=172.17.0.1)(PORT=60922)) * establish *
O12CPDB * 0
First entry when trying to log in with a wrong PW and the second one with
the right one. Both looks similar.
Is this normal and is there any way find out non-successful connection
attempts? The example was done using a 12.2.0.1 installed in a docker and
the host is a windows machine.
Best regards
Ahmed
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