How to set the resource_limit parameter to each user

Question

how to set the resource_limit initialization parameter to each user.
it says like this;
You must modify the RESOURCE_LIMIT initialization parameter. After you assign profiles to users, the Oracle database
enforces the limits only when the RESOURCE_LIMIT parameter is set to TRUE. Therefore, you modify the RESOURCE_LIMIT initialization parameter to enforce the resource limits defined within each user's profile.
alter system set resource_limit=true;
if doing like this is it ok. ????
Assume im logged as user "SYS". so if i use this command, will it alter the resource_limit parameter for this user SYS only OR for the entire database..... (for all other user)

Answer 1

The RESOURCE_LIMIT parameter only enables resource limits that are defined in profiles.
The DEFAULT profile, by default, is UNLIMITED for all resources.
You should create a custom profile and set the limits you need. The next step would be to assign that profile to the users whom you want to limit. Other users in other profiles (or in the DEFAULT profile) would not have any limits enforced.
See the documentation on CREATE PROFILE.
See http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_6010.htm#i2065930