How does a WordPress installation become ‘alive’?

Its not entirely dormant, wp has a cron system to automate scheduled tasks. So even if noone accesses it it will keep plugging away at scheduled tasks. *** as long ad someone has accessed the site to trigger it. It will run until all tasks completed or the max execution time for scripts on the server has been reached

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