After copied my old database from Oscommerce to the new MarvikShop/Joomla. I want to delete some old orders. Of course you can delete them one by one. But I want mass delete.
So I found this oscommerce add-on
addons.oscommerce.com/info/6924
did some changes in the file. Link to the right database.
for me adding j17_osc_... database table. For other people it could be mcyuk_osc_
Of course do a BACKUP of your whole database!!!
After that run it directly by calling the URL.
that's it!