I'm transferring my phpbb database to another server. I've noticed, there is table named "phpbb_search_wordmatch". It's very large and it's very difficult to restore it. Do you know what this table includes? What can happen, if I would not copy the values in it?
you can delete it and rebuild your search index with this mod: http://www.phpbbhacks.com/download/434 you can also delete search_wordlist How many posts are in your forums?
I used that MOD recently when transferring a database. There are actually three tables related to phpBB search indexing. You can empty one or all of them, transfer the database, and then run that MOD with the "delete tables and rebuild" option after the database is moved.