Cannot open Plesk - Zend_Db_Adapter_Exception

[VojinP]

HI,
since hour ago my sites just stopped and Plesk, too.

Error when trying to open plesk is:

ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] No such file or directory (Abstract.php:144)

I have searched to find a solution but there are no exact solutions for my problem, just similar ones which haven't solved my problem. Plesk just won't start.
Any idea what can I do?

 

[VojinP]

Sorry for bothering you guys, I have just rebooted VPS and everything is OK now...