> My application runs very well with the old version libvirt-0.4.5. I think, > problem starts with >= 0.5.0 Some addition information: I tested the szenario also with 0.4.5 - but the JVM creashed also. Therefore, the difference of libvirt version's is to responsible for the crash. One more difference - the working szenario based on xen-hypervisor - the current (crashed JVM) szenario based on qemu (kvm-84) My connection qemu-URL inside the java code looks like qemu:///session (also tried system instead of session - what's the difference between system/session ?) regards Danny -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list