Having problems with data persistency - or how to keep a DB connection alive?

[eluser]duartix[/eluser]
[quote author="jairoh_" date="1380070109"]maybe there is some part in your code that you have destory/unset the session?[/quote]
I do have some destroying code but that is only called when the user clicks the logout button, so that's not the reason.

However I have managed to find a solution. It seems that there is an upper level of persistency. I changed my previous code to:

home controller:

Code:

$_SESSION["username"] = $_POST['username'];
$_SESSION["password"] = $_POST['password'];
$_SESSION["hostname"] = $_POST['hostname'];

database.php

Code:

$db['oracle']['username'] = $_SESSION["username"];
$db['oracle']['password'] = $_SESSION["password"];
$db['oracle']['hostname'] = $_SESSION["hostname"];

This will survive the page transition.
Now what still puzzles me is why the user session data before that was lost. I didn't have any session_start statements before i started using the superglobal $_SESSION. Could that be the issue?

(EDIT) Well, I've tested it and that was it . My initial approach was correct, the only issue with it was session management. Now that I have the session_start statements (from the second approach) it 's working.