XML to Clob convertion

Hi ,
I have a table which has a XML data type column, i need to select this coulumn and return it in CLOB type.
I know that I can convert CLOB to XML format using function Sys.Xmltype.Createxml, but I want the revrese.
Please help me on this.
Thanks

XMLType.getClobval() perhaps?
Regards
Peter
Example from docs:
(http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14259/xdb04cre.htm#g1050045)
CREATE TABLE xml_table OF XMLType;
Table created.
CREATE TABLE table_with_xml_column (filename VARCHAR2(64), xml_document XMLType);
Table created.
INSERT INTO xml_table
VALUES (XMLType(bfilename('XMLDIR', 'purchaseOrder.xml'),
          nls_charset_id('AL32UTF8')));
1 row created.
INSERT INTO table_with_xml_column (filename, xml_document)
VALUES ('purchaseOrder.xml',
          XMLType(bfilename('XMLDIR', 'purchaseOrder.xml'),
          nls_charset_id('AL32UTF8')));
1 row created.
SELECT x.xml_document.getCLOBVal() FROM table_with_xml_column x;Edited by: Peter on Jun 23, 2009 3:11 AM

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null

Eric (guest) wrote:
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>
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>
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>
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Hi,
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alekons wrote:
Any help appreciatedYou will have to convert it to xmltype first. See below:
SQL> select * from v$version ;
BANNER
Oracle Database 10g Release 10.2.0.5.0 - Production
PL/SQL Release 10.2.0.5.0 - Production
CORE     10.2.0.5.0     Production
TNS for Linux: Version 10.2.0.5.0 - Production
NLSRTL Version 10.2.0.5.0 - Production
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<JMSHeaders xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">
<jms1:JMSDeliveryMode>PERSISTENT</jms1:JMSDeliveryMode>
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<jms1:JMSRedelivered>false</jms1:JMSRedelivered>
<jms1:JMSPriority>4</jms1:JMSPriority>
</JMSHeaders>
<OtherProperties>
<auditPartnerId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">010000000001189CC2BC2C</auditPartnerId>
<auditServiceId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">Auth</auditServiceId>
<correlationTransactionId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">d0022064-1df3-43ef-be5b-93aedc96b3b2</correlationTransactionId>
<auditReceivedDate xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">2012-02-14 12:12:23.346 +0100</auditReceivedDate>
<auditStatus xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">ok</auditStatus>
<auditForwardedDate xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">2012-02-14 12:12:23.351 +0100</auditForwardedDate>
<auditMsisdn xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms"/>
<auditEngineId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">dpNorthLog</auditEngineId>
<ns0:auditInfo xmlns:ns0="http://www.tibco.com/schemas/Project_gig_reporting/tib_bw_reporting/Resources/Schemas/auditInfo.xsd">
<ns0:dp-logpoint>response</ns0:dp-logpoint>
<ns0:dp-target-url/>
<ns0:dp-port>20565</ns0:dp-port>
<ns0:dp-uri>/comp_am</ns0:dp-uri>
<ns0:dp-size>1365</ns0:dp-size>
<ns0:dp-replytoengine/>
</ns0:auditInfo>
</OtherProperties>
</msgContext>') as messagetext from dual )
SELECT x.auditPartnerId,
x.auditServiceId
FROM src s
, XMLTable(
'/msgContext/OtherProperties'
passing s.messagetext
columns
auditPartnerId VARCHAR2(20) PATH 'auditPartnerId'
, AUDITSERVICEID VARCHAR2(20) PATH 'auditServiceId'
) x;
36   37 passing s.messagetext
ERROR at line 33:
ORA-00932: inconsistent datatypes: expected - got CLOB
with src as ( select xmltype(to_clob('<msgContext>
<JMSHeaders xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">
<jms1:JMSDeliveryMode>PERSISTENT</jms1:JMSDeliveryMode>
<jms1:JMSTimestamp>1329217943352</jms1:JMSTimestamp>
<jms1:JMSExpiration>0</jms1:JMSExpiration>
<jms1:JMSRedelivered>false</jms1:JMSRedelivered>
<jms1:JMSPriority>4</jms1:JMSPriority>
</JMSHeaders>
<OtherProperties>
<auditPartnerId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">010000000001189CC2BC2C</auditPartnerId>
<auditServiceId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">Auth</auditServiceId>
<correlationTransactionId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">d0022064-1df3-43ef-be5b-93aedc96b3b2</correlationTransactionId>
<auditReceivedDate xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">2012-02-14 12:12:23.346 +0100</auditReceivedDate>
<auditStatus xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">ok</auditStatus>
<auditForwardedDate xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">2012-02-14 12:12:23.351 +0100</auditForwardedDate>
<auditMsisdn xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms"/>
<auditEngineId xmlns:jms1="http://www.tibco.com/namespaces/tnt/plugins/jms">dpNorthLog</auditEngineId>
<ns0:auditInfo xmlns:ns0="http://www.tibco.com/schemas/Project_gig_reporting/tib_bw_reporting/Resources/Schemas/auditInfo.xsd">
<ns0:dp-logpoint>response</ns0:dp-logpoint>
<ns0:dp-target-url/>
<ns0:dp-port>20565</ns0:dp-port>
<ns0:dp-uri>/comp_am</ns0:dp-uri>
<ns0:dp-size>1365</ns0:dp-size>
<ns0:dp-replytoengine/>
</ns0:auditInfo>
</OtherProperties>
</msgContext>')) as messagetext from dual )
SELECT x.auditPartnerId,
x.auditServiceId
FROM src s
, XMLTable(
'/msgContext/OtherProperties'
passing s.messagetext
columns
auditPartnerId VARCHAR2(20) PATH 'auditPartnerId'
, AUDITSERVICEID VARCHAR2(20) PATH 'auditServiceId'
37 ) x;
AUDITPARTNERID          AUDITSERVICEID
010000000001189CC2BC Auth

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Is there a way around this limitation? The database I'm migrating has LOTS of CLOB columns (converted from MS Access "memo" fields).

jlange,
Having converted a bunch of MS Access applications myself, I would encourage you to look at the Oracle Migration Workbench (OMWB): http://www.oracle.com/technology/tech/migration/index.html
This free tool can be downloaded from OTN, and provides a more streamlined approach to moving the data from MS Access to Oracle, including support for Memos to CLOBs.
Once you're data has been moved over, you can then use ApEx to re-create the UI.
Thanks,
- Scott -

XML from CLOB

Hello,
We have encountered a problem:
We are using Windows-1250 codepage (EE8MSWIN1250) with Oracle8i 8.1.7.0. When we use correct string with special characters (from Slovak language) in CLOB, after loading it to the XML parser and retrieving it back from XML parser, we are getting '?' instead of special characters.
The sample showing this problem is following:
DECLARE
xp xmlparser.parser;
xmldoc xmldom.domdocument;
xmlnode xmldom.domnode;
v_params CLOB;
v_in_temp CLOB;
v_buffer VARCHAR(255);
BEGIN
v_buffer := '<?xml version="1.0" encoding="ISO-8859-2"?><unicode name="aš}hžšhžhž}imTotoUzIdeCitat+5ac;l}amin)CN."/>';
v_buffer := CONVERT(v_buffer,'EE8ISO8859P2','EE8MSWIN1250'); --EE8ISO8859P2
xp := xmlparser.newparser;
xmlparser.setValidationMode(xp, FALSE);
xmlparser.setPreserveWhiteSpace(xp, TRUE);
dbms_output.put_line('Input buffer:');
dbms_output.put_line(v_buffer);
dbms_lob.createtemporary(v_in_temp,false);
dbms_lob.write(v_in_temp,LENGTH(v_buffer),1,v_buffer);
dbms_output.put_line('Input CLOB:');
tools.put_clob(v_in_temp);
xmlparser.parseclob(xp,v_in_temp);
-- xmlparser.parsebuffer(xp,v_buffer);
xmldoc := xmlparser.getdocument(xp);
xmlnode := xmldom.makenode(xmldom.getdocumentelement(xmldoc));
--nacitame name a uname procesu
DECLARE o_buffer VARCHAR2(255);
o_clob CLOB;
BEGIN
xmldom.writetoBuffer(xmlnode,o_buffer);
dbms_output.put_line('Output Buffer:');
dbms_output.put_line(o_buffer);
dbms_lob.createtemporary(o_clob,true);
xmldom.writetoClob(xmlnode,o_clob);
dbms_output.put_line('Output Clob:');
tools.put_clob(o_clob);
--?? Why this output clob is not the same as output buffer??
dbms_lob.freetemporary(o_clob);
END;
END;
Does anybody know what we are doing wrong?

OK, so that gives me one column with just the <clob>, but I want the data to be parsed back out into it's columns and rows..
So the clob for this column might hold this XML:
<?xml version="1.0"?>
<ROWSET>
<ROW>
<SORCONT_PIDM>99955</SORCONT_PIDM>
<SORCONT_CTYP_CODE>TAP</SORCONT_CTYP_CODE>
</ROW>
</ROWSET>
What I want a query of this one column to produce:
SORCONT_PIDM SORCONT_CTYP_CODE
99955 TAP

XML to Clob convertion

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