Unable to call a Web Services via UTL_DBWS

Question

Hi all,
I create with Apex 3.1 a web service (it works)
Now i need to use the UTL_DBWS package to access a web services from PL/SQL
So i get the Name 'WebServiceDemo', the URL 'http://my_url' and the Target Namespace 'http://my_target'
from the web service reference to build PL/SQL process
The operation 'Login' has two input parameters (username as string, password as string - nullable)
and one ouput parameter (sessionId as string)
When i run the following source code, i get an error
ORA-29532: javax.xml.rpc.soap.SOAPFaultException: Well-formedness violation
Oracle 10.2.0.4
What am i doing wrong?
Any help is appreciated,
Thanks
Grégory
Here is my code :
DECLARE
   service_            UTL_DBWS.service;
   call_               UTL_DBWS.CALL;
   service_qname       UTL_DBWS.qname;
   port_qname          UTL_DBWS.qname;
   operation_qname     UTL_DBWS.qname;
   string_type_qname   UTL_DBWS.qname;
   retx                ANYDATA;
   retx_string         VARCHAR2 (100);
   retx_len            NUMBER;
   params              UTL_DBWS.anydata_list;
BEGIN
   service_qname := UTL_DBWS.to_qname (NULL, 'WebServiceDemo');
   service_ := UTL_DBWS.create_service (service_qname);
   port_qname := UTL_DBWS.to_qname (NULL, 'WebServiceDemo');
   -- target --
   operation_qname := UTL_DBWS.to_qname ('http://my_target', 'Login');
   call_ := UTL_DBWS.create_call (service_, port_qname, operation_qname);
   -- URL --
   UTL_DBWS.set_target_endpoint_address
      (call_,
       'http://my_url'
   string_type_qname :=
              UTL_DBWS.to_qname ('http://www.w3.org/2001/XMLSchema', 'string');
   UTL_DBWS.ADD_PARAMETER (call_,
                           'name',
                           string_type_qname,
                           'ParameterMode.IN'
   UTL_DBWS.set_return_type (call_, string_type_qname);
   params (0) := ANYDATA.convertvarchar2 ('my_login');
   retx := UTL_DBWS.invoke (call_, params);
   retx_string := retx.accessvarchar2;
END;

Answer 1

I have had this issue before when calling a .NET service, it was firewall related. I didn't actually make the fix so I can't tell you exactly how it was fixed on the server. I hope this info makes sense as this this the info I got from the IT boys
I’ve install this tool on your computer:
http://www.microsoft.com/downloads/details.aspx?FamilyID=05C2C932-B15A-4990-B525-66380743DA89&displaylang=en
which does that:
Firewall Client for ISA Server can be optionally installed on client computers protected by Microsoft ISA Server. Firewall Client for ISA Server provides enhanced security, application support, and access control for client computers. It provides authentication for Winsock applications that use TCP and UDP, supports complex secondary protocols, and supplies user and application information to the ISA Server logs.
When a client computer running Firewall Client for ISA Server makes a request, the destination is evaluated by the Firewall Client software, and external requests are directed to the ISA Server computer for handling. No specific routing infrastructure is required. Firewall Client sends user information transparently with each request, enabling you to create a firewall policy on the ISA Server computer with rules that use the authentication credentials presented by the client. ISA Server allows you to configure automatic discovery for Firewall client computers, using a WPAD entry in DNS or DHCP to obtain correct Web proxy settings for clients, depending on their location.
and I’ve added a exception in IE to the tools-lan settings-advanced-exceptions to be creditworks.* Did this by modifying the GPO that applies to your account, so all the users in National Office should have that exception.
hope you can use this.
cheers
James