DB2 authentication : how it works ?

[Kona]

Hello,
I had a strange situation with a DB2 access.
The db2 is set with "server authentication" type.
I don't know the reason but I was in front of the following situation
:
The user ID used to connect to the DB2 on a Solaris have a well
defined password.
If I try to connect to the DB as this user and with the "good"
password, the access is refused.
Same case if I give a wrong password. In this case it is what I
expected.
The username/password is 100% correct. I can log in on to the Unix
server with.
But what it more strange is if I give a "blank" password, just type
return to the password prompt, I'm connected to the DB.

Of course it is a special situation.
I can not find the reason of this comportment.

I re-install all the DB and now it is correct.
But what can be wrong ?

Thank a lot for any advices

[Michael Reinfeld]

Hi,
I think you have lost the SUID and GUID bits on the modules in
.../sqllib/adm.
Some of them are responsible for the authentification.

"Kona" <ko*******@yahoo.fr> schrieb im Newsbeitrag
news:a1**************************@posting.google.c om...

Hello,
I had a strange situation with a DB2 access.
The db2 is set with "server authentication" type.
I don't know the reason but I was in front of the following situation
:
The user ID used to connect to the DB2 on a Solaris have a well
defined password.
If I try to connect to the DB as this user and with the "good"
password, the access is refused.
Same case if I give a wrong password. In this case it is what I
expected.
The username/password is 100% correct. I can log in on to the Unix
server with.
But what it more strange is if I give a "blank" password, just type
return to the password prompt, I'm connected to the DB.

Of course it is a special situation.
I can not find the reason of this comportment.

I re-install all the DB and now it is correct.
But what can be wrong ?

Thank a lot for any advices