Tomcat 5.0.16 DBCP Connection Pool Exhausted Error

[Kausik Dey]

Hi Guys,
Currently I am using 5.0.5 in production. I was trying to upgrade to 5.0.15 or 5.0.16. 
I made necessary changes to server.xml to create informix DBCP. Unfortunately, I am 
getting "Connection Pool Exhausted" error while trying to obtain the connection from 
Datasource. Is it a bug in these version or I am doing something wrong? Please advise 
me.