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From "Knight, Digby" <>
Subject RE: DBCP uses thousands of ports connecting to MySQL on XP (and f ails )
Date Fri, 02 May 2003 08:16:53 GMT
It happens after a clean reboot with the following code 

InitialContext ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("java:comp/env/jdbc/datasource");
// Working here - found ds okay from <GlobalResources>
Connection conn = ds.getConnection();
// Check netstat - thousands of connections to port 3306

It shouldn't be holding connections open because this is the first time I've
connected. The datasource may be making a few connections, but the maximum
is set to 4 so I don't think it should be using all the outgoing ports.

-----Original Message-----
From: Rodney Waldhoff []
Sent: 01 May 2003 18:46
To: Jakarta Commons Users List
Subject: Re: DBCP uses thousands of ports connecting to MySQL on XP (and
fails )

Trying to make a connection, or holding open connections that were never

- Rod <>

On Thu, 1 May 2003, Knight, Digby wrote:

> Further to my problem last week where I was getting a BindException when
> trying to connect to MySQL using Tomcat 4.1.24, I have now done a NetStat
> after it fails, and every outgoing port (several thousand) has been used
> trying to make the connection.
> Does anyone know why this is, and whether it's a DBCP problem or an WinXP
> problem?
> I have read on a mailing list that the number of available ports can be
> increased further, but I can't see that this would help - they'd just get
> used up too.
> Has anyone come across this?
> Digby
> (Tomcat 4.1.24, MySQL 4, Connector/J 3.07, XP SP1)
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