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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