This can be done by using a "profile"
To implement a 3 session hard limit for each user in the database, perform the following:
Login to the DB as SYS via SQLPlus
Once there run the following:
alter system set RESOURCE_LIMIT=true scope=both;
create profile sesslimit limit sessions_per_user 3;
For each user you wish to implement the new limit on you
will need to do the following:
alter user <username> profile sesslimit;
10 to 12 sessions
Concurrent powers
4 i think
Since 1941, every Congress has had two sessions, convening in January of each year.
Basic Rolfing treatment consists of 10 sessions, each lasting 60-90 minutes and costing about $100 each. The sessions are spaced a week or longer apart.
Sessions at a learning center typically last about an hour. They can be made longer depending on the needs of the student. Each learning center has their own guidlines reguarding the sessions.
Processes that run at the same time or pace - along side of each other not before or after.
The goal in concurrent database is to allow multiple users to access the database simultaneously without interfering with each other. To control data, first a concept is needed to allow us to encapsulate database accesses . Such encapsulation is called a 'Transaction'.
concurrent
1 hour = 60 minutes 8 hours = (8 x 60) = 480 minutes Three sessions can have 160 minutes = 2hours 40minutes each. The sessions are equal, and their total is 8 hours. (No slack-time is allowed between sessions.)
Sessions in PHP are easy to learn and set up, first of all you need to make sure you use the function session_start() at the start of each script to make sure the sessions work. Then all you need to do is the following to store information in sessions: <?php // allow sessions to work on script session_start(); // set up a session called my number $_SESSION['my_number'] = 1; ?> That's all you need to do to set up and store data in a session. Now if you want to delete a session you will need to use the unset() function like shown below: <?php unset($_SESSION['my_number']); ?> To destroy all sessions in one go you can call the session_destroy() function. This will save you some time. <?php session_destroy(); ?>
Disadvantage of concurrent control: Since concurrent control uses a series of checks throughout the process/project chain, clarity about the standards required at each control point is essential. This requires a thorough and detailed understanding of the specific tasks involved and their relationship to the desired end product/project outcomes.