WPtesting

but it’s working fine with my sub-directory installation, it just creating problem with my sub-domain installation.
Why so?

is there any way to fix it?

Can you please elaborate?

for example old revision, empty tables, etc.
One more thing is, can i use multiple DB for better experience? if yes, how?

i was trying to add www b4 subdomains also, like http://www.subdomain.domain.com. But now I can see you are recommending the non-www version, well I can continue with this and add one 301 redirection from www to non www so that google can index my canonical url only.

@ipstenu

WordPress can only have ONE master domain. It’s EITHER http://www.domain.com OR it’s domain.com. That’s it. You don’t get both.

But I’m afraid, you are wrong.
Check out this one
http://www.beijing-interpreter.com/
http://beijing-interpreter.com/
Both urls working fine without redirection.
Correct me If I’m wrong.

Guys, I have mentioned that

I’m not looking for any kinda redirection.

like blogger, for ex:
http://googleblog.blogspot.com/
http://www.googleblog.blogspot.com/

NO REDIRECTION

@ipstenu
What if i do a blind replace?

You don’t want to replace anything in widgets

If I change the domain name, what’s the need of that OLD ONE?

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule . index.php [L]

Ya it’s “500 Internal Server Error”.