I tried to restore data in Admin-database-import/export-restore data. Then I got an fatal error about lsql_SearchLog.def does not exit or permissions are not right...

I set all my Links directory to be 777. So I think that it may not be a permission problem. But I did not find lsql_SearchLog.def in .../Links/admin/defs directory. What is this file and how do I get it? Help, somebody