redirect issue after ugrade php / sql 4 to php / sql 5 multisites only

Well, I am having this same issue on two different web sites on two different servers. I upgraded the sql / php and it failed with the multisite sites – the one with the first fail:
I took the backup I had made (while the database was on php / sql 4 version) – and then imported the sql file and imported it to a new database with the phpmyadmin 5 and that did not work, changed the credentials in wp-congif and it still did the infinite redirect fail – then I took the php 4 version and imported straight into the database that had been converted to php/ sql 5 overwriting the main one, and it still has the redirect fail.

It fails / redirect loops on the home page, as well as mysite.com/wp-admin/ – strange thing is that going to wp-admin/upgrade.php brings up a page, but clicking upgrade basically refreshes the screen and it dies.

Yes, I made a new wp 3.2 multisite and it seems to work fine.

Same server, nothing else has changed, just the upgrade to sql 5.

I paid extra to get supreme support from my host and asked them to double check everything, including all the php / sql modules being upgraded and installed properly. We went through the process of importing the sql 4 database into a new blank database (which is not running v5) – and still have the same redirecting loop issue.

I tried check / repair of this database and still fails.

This site was a wpmu v 1.5 (I think) that has been upgraded several times over the years.

I tried renaming the plugins folder to make sure it was not a plugins issue (although I really think this install was not running any plugins)

I just had the same issue occur on a different server, with a different host and the mu sites on that server did the same thing. They were able to re-import the backup dumps into php/sql5 and everything runs fines on that server, taking away this redirecting issue – but that does not seem to work properly on this one server with my other host.

the dot com redirect loops, the dotcom/wp-admin redirect loops.. going to wp-admin/upgrade.php shows a page, click the buttin, it changes the page and says done – and does not seem to change anything – very strange.

Thank you so much for helping with this!

I am assuming that in wp-config I look to this line for this info:
define(‘DOMAIN_CURRENT_SITE’, ‘mysite.com’ );

But where would I look in the database for this info?
Also, what are the best ways to look into the database? Should I use phpmyadmin or try to open it in a text editor like from open office or editplus or is there something better?

Did the search, and in wp-site meta it shows the same type of setup; http://mysite.com

This is so weird. Would it be possible for someone to import my database into a fresh install on a different server and see if it’s working right there, and then re-export the database from sql v5 or would that not work either?

in the wp_site section, I just see three fields – “Id” is 1, “domain” is mysite.com, “path” is /

I do not see a field for prefix in wp_site

Could that be the problem?!

okay, I see two instances of the http://www.mysite in the database, on is in wp_signups and the other is in wp_users – should I edit those two blocks and take out the www? Would that be causing the redirect on home page issuse?

okay, tried that – still not working.. I think that signup was someone trying to exploit something from a registration in 2004 – they had signed up with wwww.mysite.com (4 W’s) as username and site name –

I wonder if my database had some corrupt tables while in php / mysql V4 – and then when it got upgraded / imported to V5 is truncated some stuff that was needed or something..