Bug between JRockit and X11 forwarding via ssh

I have encountered what appears to be a bug in the interaction of JRockit with X11 ssh forwarding.
When running any Java GUI application on a remote machine using X11 forwarding via ssh, a variety of problems occur. For example:
--- cut here ---
% mitrion-ide
The program '' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAtom (invalid Atom parameter)'.
  (Details: serial 189 error_code 5 request_code 20 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
--- cut here ---That's the good case. When running the rmmlite application (available at https://rmml.dev.java.net/servlets/ProjectDocumentList?folderID=437&expandFolder=437&folderID=438 ), I experience what appears to be a near-lockup of my local workstation.
Neither of these problems occur if I set my DISPLAY to not use ssh X11 forwarding. Likewise, non-Java applications work just fine with ssh X11 forwarding. Therefore the problem seems to be limited to the Java + ssh X11 forwarding combination.
I have a suitable workaround (i.e. setting the DISPLAY variable to avoid ssh X11 forwarding), but I thought this was worth bringing to BEA's attention. I'd also be curious to know if others have run into similar difficulties.
Here are the configuration details:
Remote X11 client (where applications are hosted)
=================================================
% java -version
java version "1.4.2_12"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_12-b03)
BEA JRockit(R) (build R27.1.0-109-73164-1.4.2_12-20061129-1418-linux-ia32, compiled mode)
% uname -a
Linux earthling 2.6.9-34.ELsmp #1 SMP Fri Feb 24 16:54:53 EST 2006 i686 athlon i386 GNU/Linux
% rpm -qa | grep openssh-server
openssh-server-3.9p1-8.RHEL4.12
This is a vanilla RedHat Linux RHEL 4 Update 3 system, with all other versions of Java removed.
Local workstation (i.e. X11 server)
===================================
% uname -a
FreeBSD somewhere.sgi.com 6.2-RELEASE FreeBSD 6.2-RELEASE #5: Mon Jan 15 08:41:01 CST 2007 [email protected]:/usr/obj/usr/src/sys/somewhere i386
% ssh -v
OpenSSH_4.5p1 FreeBSD-20061110, OpenSSL 0.9.7e-p1 25 Oct 2004
% pkg_info -Ix xorg-server
xorg-server-6.9.0_3 X.Org X server and related programs
Thank you,
Brent Casavant

Brent,
it would be nice to know if this problem is specific to the JRockit JDK or
if you also can reproduce it using the corresponding Sun JDK 1.4.2. Please
do also try with a later version such as latest JRockit JDK 5.0.
Thanks
/Robert
<Brent Casavant> wrote in message news:[email protected]...
I have encountered what appears to be a bug in the interaction of JRockit
with X11 ssh forwarding.
When running any Java GUI application on a remote machine using X11
forwarding via ssh, a variety of problems occur. For example:
--- cut here ---
% mitrion-ide
The program '' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAtom (invalid Atom parameter)'.
  (Details: serial 189 error_code 5 request_code 20 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
--- cut here ---That's the good case. When running the rmmlite application (available at
https://rmml.dev.java.net/servlets/ProjectDocumentList?folderID=437&expandFolder=437&folderID=438 )
, I experience what appears to be a near-lockup of my local workstation.
Neither of these problems occur if I set my DISPLAY to not use ssh X11
forwarding. Likewise, non-Java applications work just fine with ssh X11
forwarding. Therefore the problem seems to be limited to the Java + ssh X11
forwarding combination.
I have a suitable workaround (i.e. setting the DISPLAY variable to avoid ssh
X11 forwarding), but I thought this was worth bringing to BEA's attention.
I'd also be curious to know if others have run into similar difficulties.
Here are the configuration details:
Remote X11 client (where applications are hosted)
=================================================
% java -version
java version "1.4.2_12"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_12-b03)
BEA JRockit(R) (build R27.1.0-109-73164-1.4.2_12-20061129-1418-linux-ia32,
compiled mode)
% uname -a
Linux earthling 2.6.9-34.ELsmp #1 SMP Fri Feb 24 16:54:53 EST 2006 i686
athlon i386 GNU/Linux
% rpm -qa | grep openssh-server
openssh-server-3.9p1-8.RHEL4.12
This is a vanilla RedHat Linux RHEL 4 Update 3 system, with all other
versions of Java removed.
Local workstation (i.e. X11 server)
===================================
% uname -a
FreeBSD somewhere.sgi.com 6.2-RELEASE FreeBSD 6.2-RELEASE #5: Mon Jan 15
08:41:01 CST 2007
[email protected]:/usr/obj/usr/src/sys/somewhere i386
% ssh -v
OpenSSH_4.5p1 FreeBSD-20061110, OpenSSL 0.9.7e-p1 25 Oct 2004
% pkg_info -Ix xorg-server
xorg-server-6.9.0_3 X.Org X server and related programs
Thank you,
Brent Casavant

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