One more problem(
FBA users are not coming in People Picker. What I have done:
1. Set params at <PeoplePickerWildcards in web.config file.
2. Set db_owner permissions for AppPool account in provider database.
3. Set connection string, member and role providers in web.config.
But stil have a problem to search users throu people picker.
I have some users in database and can login to SP FBA site throu login page. But can't find user to add to SharePoint groups(