Thread:Project:Support desk/Accidentally overwrote database with old data

I imported an old database backup file into the live wiki server, using mysql command. Is there any way to undo this? The backup available is 3 months old which is too old to restore. And yes, i know we should have done backup regularly. I'm not very familiar with how mediawiki works, but I understand that the version history, user accounts/access, etc. will all be affected, and the links as well.

The following are the versions used:

Mediawiki ver 1.13.2

PHP ver 5.2.6

MySQL ver 5.0.51b

Apache ver 2.2.9

Xampp ver 1.6.7

Desperately need help on this!