Limit The Access To The Database

In this Article, i explain how to limit access to database for only one user per schema which mean one concurrent user per schema.

Resource_limit should set to True
SQL> show parameter resource

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
resource_limit                       boolean     TURE
resource_manager_plan                string
After change this parameter Bounce database.

Connect to database using sysdba privileges 
sqlplus / as sysdba
create profile Only_one_user limit sessions_per_user 1;
Create New User/modify old one depend on what you want:

create user test identified by test profile Only_one_user;
grant connect to test;
Now Try to connect to this user using more than one terminal, if you did you will receive error
ORA-02391: exceeded simultaneous SESSIONS_PER_USER limit
Thank you
Osama Mustafa


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