Drupal 8.x

I was looking into the database and when I went back to the site it caused the following error?

PDOException: SQLSTATE[28000] [1045] Access denied for user 'cet1303101285440'@'72.167.232.153' (using password: YES) in lock_may_be_available() (line 167 of /home/content/58/10261658/html/sandbox/turboblue/includes/lock.inc).

I found the file but what do I do NOW!!!! How do I unlock the database...???

I am a contractor for a company that uses Drupal and they need a module that integrates with Drupal to put Advertisers on a website.

What module is this?
What is required to use this module?
Are any other modules or requirements needed?

Any other info would be greatly appreciated!
Thanks!

1. Original Idea, Intro

Reflecting to http://drupal.org/node/1261744 that is about Entity System, and
http://drupal.org/community-initiatives/drupal-core/usability that is about Drupal 8 User Experience.

I got the idea of the entity system. Wow. Great idea. After that I decided to start using it, to have a look at it as it sounded so good. After my first experience of Drupal 7 I decided to open this forum here.

My forum topic is about:

1. starts from my first impressions of entity system and it turns out
2. to suggest some changes that I do to keep drupal going on it's very original path
3. It also going to show an idea making it behave so.

Have you ever wondered why:

• it's complicated adding fields to Users in drupal 6, or
• why hook_form_alter doesn't work the same way with og_groups module as it does normally, or
• why conditional fields module doesn't work certain situations, or
• why it takes 3 months to learn using Drupal while it takes 3 days to use Wordpress

If you've ever had similar problems or questions than this forum is for you.

I have been trying to install Drupal 8 on my shared server and keep running into the same issue. I get through the install just fine and when I go to view the site I get 500 error. Tried with a clean install of Drupal 8 and a Drupal 8 Spark distro as well. It's not throwing anything into the log and I've tried all the normal .htaccess stuff I usually do like uncomment Rewrite Base and whatnot.

Any help would be much appreciated.

can you give me some advice
about how i can get straight in there

and start programming

Is there any module that allows you to put in some users that are not real and later remove them when the site gets going?