Proxool problem?

dharma · **Posted:** Mon Dec 15, 2003 5:27 am

Since I work with Hibernate2.1final, I've got the following exception when I close the SessionFactory instance (I work with the 'Open session in view' pattern) :

14-12-2003 18:55:53 ERROR org.logicalcobwebs.proxool.ShutdownHook:62 - Problem calling "get cause" on IllegalStateException.
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.logicalcobwebs.proxool.ShutdownHook.remove(ShutdownHook.java:40)
at org.logicalcobwebs.proxool.ProxoolFacade.shutdown(ProxoolFacade.java:238)
at org.logicalcobwebs.proxool.ProxoolFacade.shutdown(ProxoolFacade.java:220)
at org.logicalcobwebs.proxool.ShutdownHook.run(ShutdownHook.java:99)
at java.lang.Thread.run(Thread.java:534)
Caused by: java.lang.IllegalStateException: Shutdown in progress
at java.lang.Shutdown.remove(Shutdown.java:102)
at java.lang.Runtime.removeShutdownHook(Runtime.java:218)
... 9 more

Any idea ?
Thank you.
Richard.

peterpumpkin · **Posted:** Mon Dec 15, 2003 6:56 am

I got it fixed by using the proxool 0.8.3 which they released yesterday http://proxool.sourceforge.net/

dharma · **Posted:** Mon Dec 15, 2003 7:07 am

peterpumpkin wrote:

I got it fixed by using the proxool 0.8.3 which they released yesterday http://proxool.sourceforge.net/

I believed you need a special proxool version to work with hibernate, can you use the regular proxool releases ?

peterpumpkin · **Posted:** Mon Dec 15, 2003 7:37 am

I dunno what the hib team mandates. It works for me, and from the proxool site:

Quote:

14 December 2003 - 0.8.3 Changes to allow Proxool to work with Cglib 2.0. If you upgraded to Hibernate 2.1 then you will need to upgrade to Proxool 0.8.3. See the change log for details.

peterpumpkin · **Posted:** Mon Dec 15, 2003 7:46 am

Actually, what I told you before is the right thing to do: this is from hib developers forum:

Quote:

Proxool 0.8.3 is a drop in replacement for the Proxool Jar file distributed with Hibernate.
You can get Proxool from http://proxool.sourceforge.net.

dharma · **Posted:** Mon Dec 15, 2003 12:19 pm

Hum, I removed the previous proxool lib, added the new proxool 0.8.3., and I have still the error ..., am I the only one to get this error ? :

Arr

dharma · **Posted:** Mon Dec 15, 2003 1:49 pm

The very first time, I've got :

Arr

billhorsman · **Posted:** Mon Dec 15, 2003 5:10 pm

dharma wrote:

Hum, I removed the previous proxool lib, added the new proxool 0.8.3., and I have still the error ..., am I the only one to get this error ? :

Arr

stolley · **Posted:** Mon Dec 15, 2003 7:12 pm

I don't get the error when running junit from the command line, but do get the error when running junit inside NetBeans.

stolley · **Posted:** Mon Dec 15, 2003 7:43 pm

Using the latest proxool seemed to solve the issue for me.

stolley · **Posted:** Mon Dec 15, 2003 7:47 pm

Oops, sorry, I'm a liar. Still breaks in NetBeans. The tests run fine, I get the error (the "get cause" one) when I shut the junit GUI down.

dharma · **Posted:** Tue Dec 16, 2003 4:47 am

Ok, I can confirm it's under JDK1.4 and with any proxool release that the bug appears. If you say it's not grave, I can become quiet now.
Thank you.

billhorsman · **Posted:** Tue Dec 16, 2003 5:19 am

Hi all,

Just to confirm: this issue is fixed in Proxool CVS and will be part of the next release. The bug is that the code logs something as an error that it should be silently ignoring. (It happens if the JVM starts to shutdown before Proxool has been shutdown).

Cheers,
Bill

rivalhw · **Posted:** Wed Oct 26, 2005 4:18 am

when you finally shutdown the Connection,you can add these code as following:

if (connection != null) {
connection.close();
ProxoolFacade pf= new ProxoolFacade();
pf.shutdown(1);
}

billhorsman · **Posted:** Wed Oct 26, 2005 4:27 am

To be clear, you should only call shutdown() when you application is closing, not everytime you close a connection.

Also, because shutdown() is a static method, you don't need to instantiate ProxoolFacade. Just call ProxoolFacade.shutdown().

Cheers,
Bill

P.S. I notice that this conversation is nearly two years old! We still haven't made a new release of Proxool but have made a lot of changes in CVS and a release is well overdue. I would recommend that most people check out the latest code from CVS and take advantage of its many fixes. As ever, this is at your own risk. We've done lots of testing on it and whilst we can't say it is a stable release until we have done a formal release there are no known problems.[/quote]