On Tuesday 05 June 2001 15:18, Guang Mei wrote:

> 1. Is there any way to limit how many sessions from a particular OSUSER? If
> yes, how?

use CREATE PROFILE, and assign the profile to the user(s).  This is 
per database user, not OS user.

>
> 2. Is there a way to limit how many sessions from a particular machine
> (which uses db link to access out oracle db)? If yes, how?

Sorry, have no idea about this one.

Jared


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