upgrade omeka 1.4 to 1.5: upgrade database


i have followed the instructions on the upgrade page http://omeka.org/codex/Upgrading but the last step (7):"Omeka 1.3 and higher: If you go to your administrative panel, you should be redirected to a new page for upgrading (example.com/upgrade). Click "Upgrade" to update your database to reflect the new data model."

But the link "upgrade" on my dashboard page is just a link to the Omeka download page.

How can i manually upgrade the database?

The problem is solved after restarting my vserver the upgrade database page was loaded and all went well...