How to retreive soap xml data from clob column in a table

Question

Hi,
I am trying to retrieve the XML tag value from clob column.
Table name = xyz and column= abc (clob datatype)
data stored in abc column is as below
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:head="http://www.abc.com/gcgi/shared/system/header" xmlns:v6="http://www.abc.com/gcgi/services/v6_0_0_0" xmlns:sys="http://www.abc.com/gcgi/shared/system/systemtypes">
<soapenv:Header xmlns:wsa="http://www.w3.org/2005/08/addressing">
<RqHeader soapenv:mustUnderstand="0" xmlns="http://www.abc.com/gcgi/shared/system/header">
<DateAndTimeStamp>2011-12-20T16:02:36.677+08:00</DateAndTimeStamp>
<UUID>1000002932</UUID>
<Version>6_0_0_0</Version>
<ClientDetails>
<Org>ABC</Org>
<OrgUnit>ABC</OrgUnit>
<ChannelID>HBK</ChannelID>
<TerminalID>0000</TerminalID>
<SrcCountryCode>SG</SrcCountryCode>
<DestCountryCode>SG</DestCountryCode>
<UserGroup>HBK</UserGroup>
</ClientDetails>
</RqHeader>
<wsa:Action>/SvcImpl/bank/
SOAPEndpoint/AlertsService.serviceagent/OpEndpointHTTP/AlertDeleteInq</wsa:Action></soapenv:Header>
<soapenv:Body>
<v6:AlertDeleteInqRq>
<v6:Base>
<v6:VID>20071209013112</v6:VID>
<!--Optional:-->
<v6:Ref>CTAA00000002644</v6:Ref>
</v6:Base>
</v6:AlertDeleteInqRq>
</soapenv:Body>
</soapenv:Envelope>
And i want to retrieve the values of tag
<ChannelID> and <v6:VID>
can somebody help, i have tried with extractvalue but not able to get the values

Answer 1

I have used the below two queries but not able to get the expected results. Both queries result into no values.
select xmltype(MED_REQ_PAYLOAD).extract('//ClientDetails/Org','xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" || xmlns="http://www.abc.com/gcgi/shared/system/header"').getStringValue() from ESB_OUTPUT_TEMP where SOAPACTION = '/SvcImpl/bank/alerts/v6_0_0_0/SOAPEndpoint/AlertsService.serviceagent/OpEndpointHTTP/AlertDeleteInq'
select EXTRACTVALUE(xmltype(MED_REQ_PAYLOAD),'/RqHeader/) from ESB_OUTPUT_TEMP where SOAPACTION = '/SvcImpl/bank/SOAPEndpoint/AlertsService.serviceagent/OpEndpointHTTP/AlertDeleteInq'
Well, for starters, both queries are syntactically wrong :
- non terminated string
- incorrect namespace mapping declaration
- unknown XMLType method "getStringValue()"
Secondly, all those functions are deprecated now.
Here's an up-to-date example using XMLTable. It will retrieve the two tag values you mentioned :
SQL> select x.*
  2  from esb_output_temp t
  3     , xmltable(
  4         xmlnamespaces(
  5           'http://schemas.xmlsoap.org/soap/envelope/' as "soap"
  6         , 'http://www.abc.com/gcgi/shared/system/header' as "head"
  7         , 'http://www.abc.com/gcgi/services/v6_0_0_0' as "v6"
  8         )
  9       , '/soap:Envelope'
10         passing xmlparse(document t.med_req_payload)
11         columns ChannelID  varchar2(10) path 'soap:Header/head:RqHeader/head:ClientDetails/head:ChannelID'
12               , VID        varchar2(30) path 'soap:Body/v6:AlertDeleteInqRq/v6:Base/v6:VID'
13       ) x
14  ;
CHANNELID  VID
HBK        20071209013112
You may also want to store XML in XMLType columns for both performance and storage optimizations.