Could Not Get Columns with XMLTABLE in Oracle PL/SQL - oracle

Question

I try to get values from columns of a XML file.
I receive XML file which in my function is assigned to c_xml but for the purposes of this question is represented in the variable c_xml in the code below.
The problem is that I have not anything printed in DBMS_OUTPUT. PUT_LINE, so I could not get any values from XML file and I could not go further with my developing.
It would be great if somebody could help to understand where is the problem with extracting values from this XML. Thanks for your time :)
The code is written on Oracle PL/SQL and follows:
DECLARE
c_xml xmltype;
BEGIN
c_xml :=
xmltype
('<?xml version=''1.0'' encoding=''utf-8''?>
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<env:Header/>
<env:Body>
<srvc:returnActStateByEgnResponse xmlns="http://curr_state_egn/CURR_STATE_EGNService" xmlns:srvc="http://curr_state_egn/CURR_STATE_EGNServiceService">
<srvc:result>
<consents_tblType>
<item>
<req_id>112</req_id>
<purpose_code>CC0100</purpose_code>
<consent_state>0</consent_state>
</item>
<item>
<req_id>112</req_id>
<purpose_code>CC0200</purpose_code>
<consent_state>1</consent_state>
</item>
<item>
<req_id>112</req_id>
<purpose_code>CC0300</purpose_code>
<consent_state>0</consent_state>
</item>
</consents_tblType>
</srvc:result>
</srvc:returnActStateByEgnResponse>
</env:Body>
</env:Envelope>');
FOR consents_tblTypes IN
( SELECT
p_req_id
, p_purpose_code
, p_consent_state
FROM xmltable(
XMLNamespaces(
'http://schemas.xmlsoap.org/soap/envelope/' AS "env"
--, 'http://www.w3.org/2001/XMLSchema-instance' AS "xsi"
, 'http://curr_state_egn/CURR_STATE_EGNServiceService' AS "srvc"
),
'/env:Envelope/env:Body/srvc:returnActStateByEgnResponse/srvc:result/consents_tblType/item'
PASSING c_xml
COLUMNS
p_req_id NUMBER PATH 'req_id' --/text()
, p_purpose_code VARCHAR2(20) PATH 'purpose_code' --/text()
, p_consent_state NUMBER PATH 'consent_state' --/text()
)
)
LOOP
DBMS_OUTPUT.put_line('p_req_id = ' || to_char(consents_tblTypes.p_req_id)) ;
DBMS_OUTPUT.put_line('p_purpose_code = ' || consents_tblTypes.p_purpose_code) ;
DBMS_OUTPUT.put_line('p_consent_state = ' || to_char(consents_tblTypes.p_consent_state)) ;
END LOOP;
end;

Answer 1

Default namespace has to be included in the declaration.
XMLNamespaces('http://schemas.xmlsoap.org/soap/envelope/' AS "env"
, 'http://curr_state_egn/CURR_STATE_EGNServiceService' AS "srvc"
, default 'http://curr_state_egn/CURR_STATE_EGNService')
This statment xmlns="http://curr_state_egn/CURR_STATE_EGNService" changes defult namespaces.