Contenido de /var/log/apache2/error.log

PHP Fatal error: session_start(): Failed to initialize storage module: user (path: severus_session) in /usr/share/phpmyadmin/libraries/ on line 86

He tratado de configurar sesiones con base de datos en mi instalación de servidor Ubuntu y empece a ver este error en my archivo log después de instalar el paquete de phpmyadmin y perder acceso a la pagina de phpMyAdmin en el navegador firefox.

Resolví el problema añadiendo estas dos lineas de código que sobre controla mi función session.save_handler con uso de base de datos.




/* vim: set expandtab sw=4 ts=4 sts=4: */
* session handling
* @todo add failover or warn if sessions are not configured properly
* @todo add an option to use mm-module for session handler
* @package PhpMyAdmin
* @see
if (! defined('PHPMYADMIN')) {

// verify if PHP supports session, die if it does not

if (!@function_exists('session_name')) {
PMA_warnMissingExtension('session', true);
} elseif (ini_get('session.auto_start') == true && session_name() != 'phpMyAdmin') {
// Do not delete the existing session, it might be used by other
// applications; instead just close it.

// disable starting of sessions before all settings are done
// does not work, besides how it is written in php manual
//ini_set('session.auto_start', 0);

// session cookie settings
0, $GLOBALS['PMA_Config']->getCookiePath(),
'', $GLOBALS['PMA_Config']->isHttps(), true

// cookies are safer (use @ini_set() in case this function is disabled)
@ini_set('session.use_cookies', true);

// optionally set session_save_path
$path = $GLOBALS['PMA_Config']->get('SessionSavePath');
if (!empty($path)) {

// but not all user allow cookies
@ini_set('session.use_only_cookies', false);
// do not force transparent session ids, see bug #3398788
//@ini_set('session.use_trans_sid', true);
//ini_set('arg_separator.output', '&');

// delete session/cookies when browser is closed
@ini_set('session.cookie_lifetime', 0);

// warn but dont work with bug
@ini_set('session.bug_compat_42', false);
@ini_set('session.bug_compat_warn', true);

// use more secure session ids
@ini_set('session.hash_function', 1);

// some pages (e.g. stylesheet) may be cached on clients, but not in shared
// proxy servers

// start the session
// on some servers (for example,, we get a permission error
// on the session data directory, so I add some "@"

// See bug #1538132. This would block normal behavior on a cluster
//@ini_set('session.save_handler', 'user');

$session_name = 'phpMyAdmin';

if (! isset($_COOKIE[$session_name])) {
// on first start of session we check for errors
// f.e. session dir cannot be accessed - session file not created
$orig_error_count = $GLOBALS['error_handler']->countErrors();
$r = session_start();
if ($r !== true
|| $orig_error_count != $GLOBALS['error_handler']->countErrors()
) {
setcookie($session_name, '', 1);
* Session initialization is done before selecting language, so we
* can not use translations here.
PMA_fatalError('Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly. Also ensure that cookies are enabled in your browser.');
} else {

* Token which is used for authenticating access queries.
* (we use "space PMA_token space" to prevent overwriting)
if (! isset($_SESSION[' PMA_token '])) {
$_SESSION[' PMA_token '] = md5(uniqid(rand(), true));

* tries to secure session from hijacking and fixation
* should be called before login and after successfull login
* (only required if sensitive information stored in session)
* @return void
function PMA_secureSession()
// prevent session fixation and XSS
$_SESSION[' PMA_token '] = md5(uniqid(rand(), true));