# phpman > man > CGI::Session::Driver::db_file(3pm)

## NAME
    [CGI::Session::Driver::db_file](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession%3A%3ADriver%3A%3Adbfile/markdown) - [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown) driver for BerkeleyDB using DB_File

## SYNOPSIS
        $s = [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)->new("driver:db_file", $sid);
        $s = [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)->new("driver:db_file", $sid, {FileName=>'/tmp/cgisessions.db'});

## DESCRIPTION
    db_file stores session data in BerkelyDB file using DB_File - Perl module. All sessions will be
    stored in a single file, specified in *FileName* driver argument as in the above example. If
    *FileName* isn't given, defaults to /tmp/cgisess.db, or its equivalent on a non-UNIX system.

    If the directory hierarchy leading to the file does not exist, will be created for you.

    This module takes a UMask option which will be used if DB_File has to create the database file
    for you. By default the umask is 0660.

## LICENSING
    For support and licensing information see [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)