Is there a way to decide from init whether we are on a certain backend page?

There are few functions/global variable in WP to determine

is_admin() - For checking if in admin panel
global $pagename  - to get the page name of admin 

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)