Symphony Fatal Database Error

Table './symphony_live/sym_sessions' is marked as crashed and should be repaired

An error occurred while attempting to execute the following query

• SELECT `session_data` FROM `sym_sessions` WHERE `session` = '4187e01bcc794e11be07907d1ce66a98' LIMIT 1

Backtrace:

• [/disk2/home/symphonyweb/public_html/symphony/lib/toolkit/class.mysql.php:270] MySQL->__error();
• [/disk2/home/symphonyweb/public_html/symphony/lib/toolkit/class.mysql.php:308] MySQL->query();
• [/disk2/home/symphonyweb/public_html/symphony/lib/toolkit/class.mysql.php:357] MySQL->fetch();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.session.php:107] MySQL->fetchVar();
• [:0] Session::read();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.session.php:51] session_start();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.cookie.php:59] Session::start();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.cookie.php:35] Cookie->__init();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.symphony.php:181] Cookie->get();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.symphony.php:74] Symphony->isLoggedIn();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.frontend.php:21] Symphony->__construct();
• [/disk2/home/symphonyweb/public_html/symphony/lib/core/class.frontend.php:14] Frontend->__construct();
• [/disk2/home/symphonyweb/public_html/index.php:13] Frontend::instance();
• [/disk2/home/symphonyweb/public_html/index.php:25] renderer();

Database Query Log:

• SET NAMES 'utf8'; [0.0001]
• SET CHARACTER SET 'utf8'; [0.0001]
• SELECT SQL_NO_CACHE * FROM `sym_cache` WHERE `hash` = '_session_config' AND (`expiry` IS NULL OR UNIX_TIMESTAMP() <= `expiry`) LIMIT 1; [0.0003]
• SELECT `session_data` FROM `sym_sessions` WHERE `session` = '4187e01bcc794e11be07907d1ce66a98' LIMIT 1; [0.0000]