event viewer msg thrown for ms sql

Hi guys

i am puzzled on how to decipher the below msg on my sql server
Had tried adjusting the settings but apparantly doesnt work

is this due to my license or what other reasons?

Error msg:
17052 :
This SQL Server has been optimized for 8 concurrent queries. This limit has been exceeded by 30 queries and performance may be adversely affected.


sql server : MS SQL Enterprise 8.0any help from anyone?