redirect - Magento redirecting to old URL after duplicating site -

I am struggling with installing a Magento multi store. The old setup was established with all of the Magento points in the same folder with two sites / shops. Now the client wants that 2 independent websites should not be changed in exchange.

However, the database was duplicated, the file was copied, var / cache, var / session, var / tmp were empty. I changed the database parameters in the app / etc / local.xml, there are no strict coded rules in the .htaccess file.

The problem is that sitea.com remains redirected to siteb.com and the administrator The area is not working, so I have to do everything in the console or phpMyAdmin

What are the database tables where do I have to make changes? Base / url / data / tmp /