Error establishing a database connection

[Lenin]

a couple of days, I have been dating this error when a user tries to view a topic at random.-
I checked and everything seems in order,
I left it because I thought that this error disappear whit updates ...
but a few days ago these database errors become more frequen

http://awesomescreenshot.com/0806x8md4 <.--capture

 

[Dean]

My initial reaction is that you may have hosting issues, unable to open connections to mysql for whatever reason. Though there could be more to it.

 

[Mike]

Isn't that a WordPress error? It's not something we output.

 

[Lenin]

I forgot, there are times that the error out when creating a new thread

 

[Lenin]

I have nothing related to wordpress ..

 

[Lenin]

I have already solved ...

 

[Shamil]

I have already solved ...

How?