Exception whilst consuming a Webservice!

Question

Hi,
I am new to webservices. I consume a webservice and while testing the created proxy i am getting an excpetion like this.
SoapFaultCode:1 JAXB unmarshalling exception: Unable to create an instance of de.te****************blw.v2.MeldungType; neste
d exception is javax.xml.bind.UnmarshalException: Unable to create an instance of de.te****************blw.v2.MeldungType-
+with linked exception: [java.lang.InstantiationException]+
The type meldung type was of type abstract="true" in the xsd as shown below.
{color:#ff0000}<xsd:complexType name="MeldungType" abstract="true">
<xsd:annotation>
<xsd:documentation>
Abstrakter Basistyp f&uuml;r alle Meldungen. Jeder Meldungstyp ist in einer eigenen Ableitung definiert.
</xsd:documentation>
</xsd:annotation>
<xsd:sequence>
<xsd:element name="Meldungsnummer" type="bt:MeldungsnummerType">
<xsd:annotation>
</xsd:sequence>
</xsd:complexType>
{color}{color:#000000}In the service call i used a type derived from it ie. one which extends from the MeldungType.
Could this be a problem in getting the above exception.
Comments requested.
Regards
Sandeep{color}

Answer 1

I think you had hitted a bug here.
In order to address the issue apply patch from Bug 17246737.Steps to download and apply the patch are listed below:
Go to MOS and search for the bug 17246737
1) Log onto My Oracle Support.
2) Click on the "Patches & Updates" tab.
3) Click on "Patch Name, Number (the default).
4) For the "Patch Name or Number" type in the patch number (for example: 17246737).
5) Choose the "Platform" or (Select the default which is "Select up to 5" for any platforms)
6) Hit Search.
Thanks
Ranjan