How do i add content to Drupal without crashing my server?

[Tom-E]

So theres some 300 users online at my site, server load is ok, below 1, and I decide to add content,

EVERY single time I add content i end up getting ~400 e-mails in my inbox a few minutes later form Vbulletin saying Database error, database error...etc

This happends when i do anything on drupal?

Why, what is the problem, is there a way around it, a possible fix in the software?

Thanks alot,

[elmuerte]

what does the error say?

[Tom-E]

Database error in vBulletin :

mysql_connect(): Too many connections
/i/www/deleted/this.com/httpdocs/forum/includes/class_core.php on line 279

oh, and later in the e-mail it says what page is causing it, but theyre always just typical pages from ppl viewing the forum... i mean if it works totally fine with over 500 people on at once, but even when i have only 300, and i make a change, my drupal is very slow to edit pages and it pretty much freezes up, then my site stops displaying it pages, says Database Server Error, and then a few minutes later, its back up, and the drupal page i updated/made IS there..!?

[tamarian]

The MySQL error says too many connections, which indicated that you may have set it too low.