The operability between Sun ORB client and a Visibroker server seems to be broken. When the customer uses a Visibroker client to connect to Visibroker server, all works fine. But when he uses the SunORB client, he gets the following exception


   org.omg.CORBA.MARSHAL: No class description available (value_tag
indicates no
    type information present) vmcid: 0x0 minor code: 0 completed: No
           at java/lang/Throwable.<init>(Throwable.java:195)
           at java/lang/Exception.<init>(Exception.java:41)
           at
java/lang/RuntimeException.<init>(RuntimeException.java:43)
           at
org/omg/CORBA/SystemException.<init>(SystemException.java:56)
           at
com/sun/corba/se/internal/iiop/CDRInputStream_1_0.read_value(CDRIn
   putStream_1_0.java:1158)
           at
com/sun/corba/se/internal/iiop/CDRInputStream.read_value(CDRInputS
   tream.java:297)
           at
com/spcs/pls/m2m/boxed_stringHelper.read(boxed_stringHelper.java:6
   8)
           at com/spcs/pls/m2m/CsaHelper.read(CsaHelper.java:72)
           at com/spcs/pls/m2m/CsaListHelper.read(CsaListHelper.java:49)
           at
com/spcs/pls/m2m/_M2mSubMaintenance4Stub.getCSAList(_M2mSubMainten
   ance4Stub.java:762)
           at com/psasoft/sprint/Switch.getCSAList(Switch.java:440)
           at
PSATestClient.main(PSATestClient.java:15)

The exception is thrown when corba holder objects as used. String and
StringHolder object that are part of the base rt.jar work fine but
methods that contain classes created from the idl fail. These same
methods work fine with the Visibroker orb as client.

They are using visibroker 4.5 and the JVM version is java version "1.3.1_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_02-b02)
Java HotSpot(TM) Client VM (build 1.3.1_02-b02, mixed mode)