How to refresh all modules and database at a time in OpenERP (Odoo)?

Step-1 Go to terminal -> Start the OpenERP Server-> and enter the below commands
Step-2 ~/workspace/OE7_Test$ ./openerp-server
Step-3 ~/workspace/OE7_Test$ ./openerp-server – u all – Database name

So this will Refresh all the modules and database at a time of you OpenERP server.