Moving 7.2 from local to https : blank page

Hello everybody !
I created a 7.2 website locally. It is working fine.
I decided to put this website on the server (with https)
I receive a message :
Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 62994856 bytes) in /home/lereseau/public_html/inc/classes/BxDolDb.php on line 486

This server has 512MB memory
Locally, i have 256MB and it is working fine.
I also noticed that in the SQL backup file, Dolphin was saving the path of the URLS (http://localhost/dolphin72/...)
I changed these URLS with "https://mywebsite.com/"
I also added these lines in  .htaccess (for https)
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

I am working with a good php version... so, can someone tell me where the problem is ?
Thank you :-)

Did not found any solution and I reinstalled everything :-(

Tell us a bit more about your server, shared hosting, dedicated, etc.

Can't comment on https part, but if you are moving from a local windows wamp environment to linux it could be the database tables were installed with lower case names on the windows machine.

I haven't check them thoroughly in D7.2, but in 7.1.x there are 20+ table entries that are supposed to be capitalized. So when you transfer from a windows/wamp environment the lower case table entries need to be renamed/changed to caps. You can do this with phpmyadmin pretty easy. Assuming they are still using caps. Like I said I haven't check them, but most likely they are, they have been there for a very long time.

That will definitely cause a memory size exhausted error if they are not.

You can refer to this older forum thread that I commented on. It was for D7.1.x, but it's definitely worth reviewing for D7.2.
http://www.boonex.com/forums/topic/Memory-exhausted-upping-memory-limit-not-working.htm

Good chance this is your problem, or at least contributing to it.