A PHP Error was encountered

Good Day,
actually i published this website using ci3
but i get an random error called "database error"
and i wanna know if this message error from server (host) side or something wrong in my code ?

thanks in advance

oh actually, support team helped me and fixed the problem but right now i found another error message

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A PHP Error was encountered

Severity: Core Warning

Message: Module 'dba' already loaded

Filename: Unknown

Line Number: 0

Backtrace:

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Check to see if your loading it twice in your code r if it is being
autoloaded and your reloading it again in code.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

thank you a lot

it's done , but please can you explain to me about the first error message ??

because what the support team said to me :

It's telling you that the MySQL server is timing out you can try using CodeIgniter's database re-connect method.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )