Hi, I would like to download jdbc-pool library. However, I am unable to find the library in jakarata.apache.org. Can anybody tell me where from I can download this file?
Regards, Narendra > > ---------- Forwarded message ---------- > From: Eric B. <ebe...@hotmail.com> > Date: Tue, Jun 23, 2009 at 10:13 AM > Subject: Re: dbcp pool evictor deadlock? > To: dev@tomcat.apache.org > > > "Mark Thomas" <ma...@apache.org> wrote in message > news:4a40e12c.2070...@apache.org... > > Narendra Sarkar wrote: > >> Hi, > >> We have a multi threaded environment. We have noticed that thread blocks > >> for > >> 10 to 20 minutes due DBCP getConnection method call. Then, we > >> investigated > >> the source code of DBCP(commons-dbcp-1.2.1-PII.jar) and noticed that > >> createConnection method is synchronized. This problem occur more > >> frequently > >> when we have lower value of MaxIdleConnection parameter. After > increasing > >> the value of MaxIdleConnection parameter, frequency of blocking get > >> reduced. > >> We then replaced DBCP connection pooling with Oracle Connection pooling > >> (ojdbc14.jar) and never encountered blocking issue. > >> > >> I think the issue is with that createConnection method of DBCP > >> synchronization. We have taken Thread dump to do above analysis. > > > > Yep, known issues with commons-pool. Should be fixed in 1.5.1. Trunk has > > been updated. Proposed for 6.0.x and 5.5.x. Alternatively, there is the > > new JDBC pool module. > > I'm a little confused now. Filip pointed me to the jdbp-1.0.5 package. > Is > that just repackaged versions of dbcp 1.2.2/pool 1.5? If not, what > versions > of dbcp/pool are contained within there? > > If the fix in commons-pool is in 1.5.1, am I still expecting concurrency > problems if upgrading 1.5? What would be the best move? > > Thanks, > > Eric > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > For additional commands, e-mail: dev-h...@tomcat.apache.org > > >
