Executing amadmin command in Unix box.-- *** Urgent****

I tried to execute following command on Unix machine:

./amadmin -u uid=amAdmin,ou=People,o=ievesp.net -v -w "password"

-s /etc/opt/SUNWam/config/xml/amUser.xml

I am getting following error message:

Info 112: Entering ldapAuthenticate method!

Success 0: No Exceptions! LDAP Authentication success!

Info 113: Calling SSO method!

Error 9: Operation failed: null

Please tell me why I am getting this Error?

Where can I find log files?

Can anyone please help me on this?

[562 byte] By [venugplk] at [2007-11-26 8:13:43]