use magento_db;
select * from core_config_data where path like '%base%url%';
pentru a schimba:
update core_config_data set value = '
http://www.new_domain_name/' where path = 'web/unsecure/base_url';
update core_config_data set value = '
http://www.new_domain_name/' where path = 'web/secure/base_url';
done.