Who creates Server Process?

[sgangava]

We know that when a client process tries to connect to an oracle instance using a login/passwd, the oracle instance authenticates it and then a server process is created after successful authentication and eventually a session is created.

But what I want to know is , who(which process) will do the authentication and also creates the server process after successful authentication? Is it any background process involved any other specific process? Please explain.

Thanks,
SArath.

[skhanal]

listener starts the server process and that handles the authentication.

[sgangava]

Hi skhanal,

Thanks for your response to my query.. Nevertheless I have one more query based on my understanding of your reply.

According to your reply this is what I understand:
Whenever a user connects to the instance using a login/passwd combination,
a) Listener creates the server process
b) Server process does the authentication (validating username/passwd).

Now if the authentication is successful, the session is established... there is no doubt in it.. but if the authentication fails, what happens? Is the server process killed/cleaned-up by the pmon process since the session is not created? please clarify.

Thanks,
SArath.

[MAK]

http://download-uk.oracle.com/docs/c...20/process.htm