Upgrading Drupal

I've just upgraded my site to Drupal 4.5 and I'm getting lots of httpd errors with errors involving a title/ link that doesn't exist anywhere in my site. For example:

22/11/2005 - 11:04 404 error: title/who not found.
22/11/2005 - 11:03 404 error: title/shall not found
22/11/2005 - 11:00 404 error: title/is not found.
22/11/2005 - 11:00 404 error: title/give not found.
22/11/2005 - 10:56 404 error: title/what follows not found.
22/11/2005 - 10:21 404 error: title/19 not found.

This is the text I see now:

Warning: mysql_connect(): Too many connections in /export/vol2/unix/p/phoohb/public_html/includes/database.mysql.inc on line 31
Too many connections

Can't there be a @mysql.. else show something static, thing?

(but I guess that means saving one more variable in a diskfile)

Can this be a considerable option?

I see in drupal handbook
in that one solution is there but in that they said that change in conf.php
but there is no conf.php in drupal files
please exaplain clearly
i want to move mysite one URL to another URL
then i am also changing my database,root,password and URL in new server.

How to update drupal database schema from 4.6.0 version to 4.6.3??
This update is require update database schema?

Thanks

Hi im somewhat new to drupal and I just upgraded fro 4.4.0 to 4.6.3. The upgrade went ok, but I am having problems with getting all of the different site installations working. There is now a "sites" folder and I'm wondering if I need to restructure all of the sub-sites somehow. the settings.php file has just enough info in it to suggest that I need to restructure but it doesnt provide enough information on what I need to do going from a 4.4.0 to 4.6.3 installation. Any help would be appreciated! thanks

I'm on a web host that uses Fantastico, so I can't follow the incremental upgrade instructions to go from 4.5.0 to 4.6.3. Is it possible to simply install a new instance and then import backup.sql into the new database (and redo the theme)?