cleanCache.php

<?php
/**
 * Set global/skip_process_modules_updates to '1' in app/etc/local.xml and
 * then use this script to apply updates and refresh the config cache without
 * causing a stampede on the config cache.
 *
 * @author Colin Mollenhour
 */
umask(0);
ini_set('memory_limit','512M');
set_time_limit(0);
if(file_exists('app/Mage.php')) require 'app/Mage.php';
else require '../../app/Mage.php';

// Init without cache so we get a fresh version
Mage::app('admin','store', array('global_ban_use_cache' => TRUE));

echo "Applying updates...\n";
Mage_Core_Model_Resource_Setup::applyAllUpdates();
Mage_Core_Model_Resource_Setup::applyAllDataUpdates();
echo "Done.\n";

// Now enable caching and save
Mage::getConfig()->getOptions()->setData('global_ban_use_cache', FALSE);
Mage::app()->baseInit(array()); // Re-init cache
Mage::getConfig()->loadModules()->loadDb()->saveCache();
echo "Saved config cache.\n";