(2015-11-04)
Problem
I can't upload large files.
Solution
In /var/www/html/owncloud/.htaccess file, comment out the php directives for
upload_max_filesize and
post_max_size.
In /etc/php.ini, make the following edits:
upload_max_filesize = 16G
post_max_size = 16G
max_execution_time = 3600
max_input_time = 3600
default_socket_timeout = 3600
Restart httpd.
In your owncloud admin panel, you should now be able to see a 16G max filesize. Note that this may or may not be subject to platform and/or browser limitations as discussed
here.
Problem
I've upgraded owncloud and now I can't upload large files!
Solution
The RPM upgrader for Owncloud rewrites .htaccess every time it updates the installed software, so you have to manually go back and comment out or remove those two php directive lines I listed above.