Hi Carl,

I will try to use the latest version of c3p0.


Thanks a lot,

Joao Paulo


2008/4/30 Carl Hall <carl.hall@gmail.com>:

There shouldn't be any problem with the latest c3p0 and Hibernate 3.0.5.  I don't know of anything that would hinder the two from working together.



On 4/30/08, Joćo Paulo Mafra <jpmneofito@gmail.com> wrote:
Hi Carl,

I don't used the latest version of c3p0 because the hibernate version
used in the app is 3.0.5. I don't know if there is any issue using
hibernate 3.0.5 with the newest c3p0, but that is a possible solution.
Do you know something about that?



2008/4/30 Carl Hall <carl.hall@gmail.com>:
>
>
>
>
> Having the jars in the same class loader will make debugging this much
> easier.
>
> The class referenced is com/mchange/v2/resourcepool/BasicResourcePool$5
> which points to an anonymous inner class.  For that to not be there is very
> odd.  Have you tried using the latest c3p0 jars?  Do you always get this
> error when trying to get a connection from c3p0?
>
>
>
>
>
> On 4/30/08, Joćo Paulo Mafra <jpmneofito@gmail.com> wrote:
> > Hi Carl,
> >
> > the jars are in WEB-INF/lib in the web app war file. It looks strange
> > because the class com.mchange.v2.resourcepool.BasicResourcePool, which
> > should be in the same jar, is loaded as seen in the stacktrace.
> >
> >
> > Thanks
> >
> >
> >
> > 2008/4/30 Carl Hall <carl.hall@gmail.com>:
> >
> > >
> > >
> > > Where do you have your c3p0 and hibernate jars located on the server?
> The
> > > problem reads like a class loader issue.
> > >
> > >
> > >
> > >
> > >
> > > On 4/30/08, Joćo Paulo Mafra <jpmneofito@gmail.com> wrote:
> > > >
> > > >
> > > >
> > > > Hi,
> > > >
> > > > My name is Joćo Paulo, I'm a brazilliam developer. I'm working in a
> > > > web application to tune its performance, and one of the tasks I've
> > > > performed were to use a connection properly (the app uses hibernate).
> > > > When several web app's run in a single tomcat, the following error
> > > > happens:
> > > >
> > > > java.lang.NoClassDefFoundError:
> > > >   com/mchange/v2/resourcepool/BasicResourcePool$5
> > > >
> > >
> com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:572)
> > > >
> > >
> com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:902)
> > > >
> > >
> com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:896)
> > > >
> > >
> com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:231)
> > > >
> > >
> com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:209)
> > > >
> > >
> com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:64)
> > > >
> > >
> org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:35)
> > > >
> > >
> org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:298)
> > > >
> > >
> org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:110)
> > > >
> org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:137)
> > > >
> org.hibernate.impl.SessionImpl.connection(SessionImpl.java:345)
> > > >
> > > br.com.vetorweb.EntryPoint.getParametroscliente(EntryPoint.java:139)
> > > >
> > > br.com.vetorweb.EntryPoint.getParametroscliente(EntryPoint.java:128)
> > > >
> > > br.com.vetorweb.security.SecurityFilter.doFilter(SecurityFilter.java:50)
> > > >         br.com.vetorweb.pool.PoolFilter.doFilter(PoolFilter.java:106)
> > > >
> > > > The app uses hibernate 3.0.5 and c3p0 0.8.5.2.
> > > >
> > > > I've searched in google about the error above, but I found few
> > > > results. One I think that may be the same of mine is described in:
> > > >    http://forum.hibernate.org/viewtopic.php?t=924774
> > > > but no solution is mentioned.
> > > >
> > > > Has someone some helpful information about this error?
> > > >
> > > >
> > > > Thanks... sorry my bad english... :'(
> > > >
> > > > Joćo Paulo
> > > >
> > > >
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