Running out of DB connections!

Question

I\'m running a Spring/Hibernate connecting to MySQL setup using c3p0 as my connection pool. For some bizarre reason it runs out of connections when the system is under load (of

Answer 1

I also had this problem and I solved it by setting the property checkoutTimeout of C3P0 to 0 instead of a value higher than 0.

In fact I had lots of threads waiting for a connection and after 10s, the same erros as yours occured.

See the doc here : http://www.mchange.com/projects/c3p0/#checkoutTimeout