Please clarify me the following.
- You specified the login name as 'SADMIN'. Is this the login id, that you used for your Operating System? "Entered name account authentication gateway server name" expects you to enter the NT login, not the DB login.
- You may also expected to specify your network name, if your login id is specific to a network. e.g Oracle\Rajkumar assuming that Oracle is your network and Rajkumar is the user name.
- You may not expected to have the DSN created, as Gateway may not be interested in knowing which DB you are connected to. And you neither enter the 'DB name' anywhere in the 'Gateway Server Configuration', if my understanding is right.
Below pages are for reference (not directly relevant to your question):
I've encountered this behavior when Siebel install image was created with patch set in it. In this case first time you run the installer, version 126.96.36.199 is installed (you can see it in OUI). 188.8.131.52 configuration wizard has this issue with a single input line for password. To install patchset, you need to run the same installer once again.