Oracle Database Discussions

Hello

i read some documents for consuming web services on the internet , but i get an error when i call add_numbers function as follows:
i connected on WSUSER , then
SQL> select add_numbers(1,3) from dual;

The Error message is:
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.IllegalAccessException: java.lang.ExceptionInInitializerError
ORA-06512: at "WSUSER.UTL_DBWS", line 193
ORA-06512: at "WSUSER.UTL_DBWS", line 190
ORA-06512: at "WSUSER.ADD_NUMBERS", line 25"


I use the following steps to setup the UTL_DBWS :

1- Create new user 'WSUSER'
2- Run the UTL_DBWS scripts ( utl_dbws_decl.sql , utl_dbws_body.sql) on WSUSER.
3- Execute this command
loadjava -u scott/tiger -r -v -f -genmissing dbwsclientws.jar dbwsclientdb11.jar
4- Log in as sys and grant these privileges to our new user:
execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','http.proxySet','write');
execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','http.proxyHost', 'write');
execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','http.proxyPort', 'write');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission', 'accessClassInPackage.sun.util.calendar','');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission','getClassLoader','');
execute dbms_java.grant_permission('WSUSER','SYS:java.net.SocketPermission','*','connect,resolve');
execute dbms_java.grant_permission('WSUSER','SYS:java.util.PropertyPermission','*','read,write');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission','setFactory','');
execute dbms_java.grant_permission('WSUSER','SYS:java.lang.RuntimePermission', 'createClassLoader', '' )

5- Create add_numbers function on wsuser to test utl_dbws:
CREATE OR REPLACE FUNCTION add_numbers (p_int_1 IN NUMBER,
p_int_2 IN NUMBER)
RETURN NUMBER
AS
l_service UTL_DBWS.service;
l_call UTL_DBWS.call;

l_wsdl_url VARCHAR2(32767);
l_namespace VARCHAR2(32767);
l_service_qname UTL_DBWS.qname;
l_port_qname UTL_DBWS.qname;
l_operation_qname UTL_DBWS.qname;

l_xmltype_in SYS.XMLTYPE;
l_xmltype_out SYS.XMLTYPE;
l_return NUMBER;
BEGIN
l_wsdl_url := 'http://www.oracle-base.com/webservices/server.php?wsdl';
l_namespace := 'http://www.oracle-base.com/webservices/';

l_service_qname := UTL_DBWS.to_qname(l_namespace, 'Calculator');
l_port_qname := UTL_DBWS.to_qname(l_namespace, 'CalculatorPort');
l_operation_qname := UTL_DBWS.to_qname(l_namespace, 'ws_add');

l_service := UTL_DBWS.create_service (
wsdl_document_location => URIFACTORY.getURI(l_wsdl_url),
service_name => l_service_qname);

l_call := UTL_DBWS.create_call (
service_handle => l_service,
port_name => l_port_qname,
operation_name => l_operation_qname);

l_xmltype_in := SYS.XMLTYPE('<?xml version="1.0" encoding="utf-8"?>
<ws_add xmlns="' || l_namespace || '">
<int1>' || p_int_1 || '</int1>
<int2>' || p_int_2 || '</int2>
</ws_add>');
l_xmltype_out := UTL_DBWS.invoke(call_Handle => l_call,
request => l_xmltype_in);

UTL_DBWS.release_call (call_handle => l_call);
UTL_DBWS.release_service (service_handle => l_service);

l_return := l_xmltype_out.extract('//return/text()').getNumberVal();
RETURN l_return;
END;
/

6- Test the function
Select add_numbers(1,2) from dual

on the test i get the error message :
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.IllegalAccessException: java.lang.ExceptionInInitializerError
ORA-06512: at "WSUSER.UTL_DBWS", line 193
ORA-06512: at "WSUSER.UTL_DBWS", line 190
ORA-06512: at "WSUSER.ADD_NUMBERS", line 25

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anyone have an idea to resolve this error .

thanks alot