"The site collection containing this sand-boxed solution has exceeded its daily resource usage quota."

When trying to activate a sand-boxed solution, Got below error message:

"The site collection containing this sand-boxed solution has exceeded its daily resource usage quota."

Solution:  
This is because of the Sandbox solution resource limit. To fix this issue, just increase the site collection Sandbox solution resource quota in site collection quotas and locks.

Go to: Central Administration >> Application Management >> Configure quotas and locks >> Pick the target site collection.

Increased the Sandbox solution resource quota under "Limit maximum usage per day to:   0 points" to 100 points, Problem solved!