Getting Error Cannot coerce between type 50 and type 32

Question

declare
  soap_request varchar2(30000);
  resp XMLType;
  v_num varchar2(30);
  begin
  soap_request := '
  <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <SOAP-ENV:Body>
      <rpc:ZEB_spcCalculate_spcPriceResponse xmlns:rpc="http://siebel.com/asi/">
         <Currency>EUR</Currency>
         <Total_spcPrice>2700</Total_spcPrice>
      </rpc:ZEB_spcCalculate_spcPriceResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>
    resp:= XMLType(soap_request);
    select resp.extract('/SOAP-ENV:Envelope/SOAP-ENV:Body/rpc:ZEB_spcCalculate_spcPriceResponse/Currency/text()','xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:rpc="http://siebel.com/asi/"') into v_num from dual;
    dbms_output.put_line(v_num);
    end;If I run the code it will give the error.
But I Change the select statement to below it runs fine.
select to_number(resp.extract('/SOAP-ENV:Envelope/SOAP-ENV:Body/rpc:ZEB_spcCalculate_spcPriceResponse/Total_spcPrice/text()','xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:rpc="http://siebel.com/asi/"')) into v_num from dual;What is wrong..
Can someone pls tell.
Thanks

Answer 1

Here's the working version of your example
declare
  soap_request varchar2(30000);
  resp XMLType;
  v_num varchar2(30);
  begin
  soap_request := '
  <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <SOAP-ENV:Body>
      <rpc:ZEB_spcCalculate_spcPriceResponse xmlns:rpc="http://siebel.com/asi/">
         <Currency>EUR</Currency>
         <Total_spcPrice>2700</Total_spcPrice>
      </rpc:ZEB_spcCalculate_spcPriceResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>
    resp:= XMLType(soap_request);
    select resp.extract('/SOAP-ENV:Envelope/SOAP-ENV:Body/rpc:ZEB_spcCalculate_spcPriceResponse/Total_spcPrice/text()','xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rpc="http://siebel.com/asi/"').getNumberVal()
      into v_num
      from dual;
    dbms_output.put_line(v_num);
    end;Changes
1) You only need to include namespaces that are referenced in the associated XPath so I removed two of them from your sample
2) Your first sample used Currency which is a text value of "EUR", hence the error.
3) I added .getNumberVal() to translate the Total_spcPrice into a Number.
4) Look at my method 3 example in {message:id=2826611} for a way to parse this as an XMLType within the PL/SQL code. I also have an example at {message:id=3610259}