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From "Bhaskar NA (JIRA)" <>
Subject [jira] Created: (POOL-107) number of connections created has crossed more than maxActive
Date Tue, 16 Oct 2007 12:07:50 GMT
number of connections created has crossed more than maxActive 

                 Key: POOL-107
             Project: Commons Pool
          Issue Type: Bug
    Affects Versions: 1.3
         Environment: OS:Red Hat Enterprise Linux AS release 4 (Nahant Update 2)
uname:Linux 2.6.9-22.ELsmp #1 SMP Mon Sep 19 18:32:14 EDT 2005 i686
vm_info: Java HotSpot(TM) Server VM (1.4.2_13-b06) for
linux-x86, built
on Oct 18 2006 09:55:11 by unknown with unknown compiler
            Reporter: Bhaskar NA
             Fix For: 1.3

I found that when the minIdle is configured then during loads, common pool creates more number
of connections  it will be greater than maxActive.

When I had following settings:

maxActive = 50
maxIdle = 30
testOnBorrow = true
validationQuery='select 1 from dual'

Number of connections in the pool went upto 121. (found thru netstat)

When I changed minIdle to 15 and did my load test connecitons in the pool went upto 66

Looks like maxActive is getting bypassed with minIdle.

When I changed minIdle to 10 and maxActive to 30 and maxIdle to 30 then number of connections
went upto 40.

Can someone please throw light on what is going on here? I am using DBCP 1.2.1 and common
pool 1.3.


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