Database Update

Hi guys,
I've a BIG problem with my website.
I'm trying to update my website because it has more problems and the control panel suggest me to update database .
When I go to update.php page, I press on continue button and I read the follow messages:

3 PENDING UPDATE

system module

7080 - Convert the 'format' column in {date_format_locale} to case sensitive archer.

block module

7009 - Increase {block}.title length to 255 characters.

node module

7015 - Enable node types that may have been erroneously disabled in Drupal 7.36.

When I click on
"Apply Pending Updates"

the browser goes on my website's homepage and the system don't apply the update.
How can I resolve it?