How to replace a substring in a CLOB column in Oracle Table

I have an Oracle Table which has a CLOB column. The CLOB column has the following XML code stored –

<AddressDetails>
    <SourceAddressID>41</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>41</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>10 Tower Lane</Address1>
    <City>MUM</City>
    <State>MH</State>
    <ZipCode>06001</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>11</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>11</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Remond Street</Address1>
    <City>HYD</City>
    <State>HY</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>1</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>1</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>46 Main St</Address1>
    <City>BENG</City>
    <State>KT</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
</AddressDetails>

I want to replace the line <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
with

<SourceAddressLevelType>INSURED</SourceAddressLevelType> 

only for <SourceAddressLevel> = INSURED.

For <SourceAddressLevel> = BROKER, it should remain BUSINESS only <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>

Sample data:

CREATE TABLE table_name (PolicyNo varchar2(10), xml_value CLOB);

INSERT INTO table_name (PolicyNo, xml_value)
SELECT 'P10001', EMPTY_CLOB() || '<AddressDetails>
    <SourceAddressID>41</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>41</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>10 Tower Lane</Address1>
    <City>MUM</City>
    <State>MH</State>
    <ZipCode>06001</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' || 
'<AddressDetails>
    <SourceAddressID>11</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>11</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Remond Street</Address1>
    <City>HYD</City>
    <State>HY</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' || 
'<AddressDetails>
    <SourceAddressID>1</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>1</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>46 Main St</Address1>
    <City>BENG</City>
    <State>KT</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
</AddressDetails>' FROM DUAL;


INSERT INTO table_name (PolicyNo, xml_value)
SELECT 'P20002', EMPTY_CLOB() || '<AddressDetails>
    <SourceAddressID>26</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>26</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>JP Resort</Address1>
    <City>KYN</City>
    <State>MH</State>
    <ZipCode>421301</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' || 
'<AddressDetails>
    <SourceAddressID>90</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>90</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Solitair Park</Address1>
    <City>PUN</City>
    <State>PUN</State>
    <ZipCode>665463</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' || 
'<AddressDetails>
    <SourceAddressID>10</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>10</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>Andoman Street</Address1>
    <City>AHM</City>
    <State>GUJ</State>
    <ZipCode>778753</ZipCode>
    <Country>IN</Country>
</AddressDetails>' FROM DUAL;

After the change the CLOB column value should be:

<AddressDetails>
    <SourceAddressID>41</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>41</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>10 Tower Lane</Address1>
    <City>MUM</City>
    <State>MH</State>
    <ZipCode>06001</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>11</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>11</SourceAddressLevelID>
    <SourceAddressLevelType>INSURED</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Remond Street</Address1>
    <City>HYD</City>
    <State>HY</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>1</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>1</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>46 Main St</Address1>
    <City>BENG</City>
    <State>KT</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
</AddressDetails>

and for second record

<AddressDetails>
    <SourceAddressID>26</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>26</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>JP Resort</Address1>
    <City>KYN</City>
    <State>MH</State>
    <ZipCode>421301</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>90</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>90</SourceAddressLevelID>
    <SourceAddressLevelType>INSURED</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Solitair Park</Address1>
    <City>PUN</City>
    <State>PUN</State>
    <ZipCode>665463</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>10</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>10</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>Andoman Street</Address1>
    <City>AHM</City>
    <State>GUJ</State>
    <ZipCode>778753</ZipCode>
    <Country>IN</Country>
</AddressDetails>

Is it possible to accomplish this?

2

You can use UPDATE with an XMLQUERY and FLWOR expression:

UPDATE table_name
SET   xml_value = XMLSERIALIZE(
                    DOCUMENT
                    XMLQUERY(
                      'copy $i := $x modify (
                         for $j in $i/AddressDetails/SourceAddressLevelType
                           return replace value of node $j with $new_type
                       )
                       return $i'
                      PASSING XMLTYPE(xml_value) AS "x",
                              'INSURED' AS "new_type"
                      RETURNING CONTENT
                    )
                    AS CLOB
                    INDENT SIZE = 4
                  )
WHERE XMLEXISTS(
        '$x/AddressDetails[SourceAddressLevel="INSURED"]'
        PASSING XMLTYPE(xml_value) AS "x"
      );

Which, for the sample data:

CREATE TABLE table_name (xml_value CLOB);

INSERT INTO table_name (xml_value)
SELECT EMPTY_CLOB() || '<AddressDetails>
    <SourceAddressID>41</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>41</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>10 Tower Lane</Address1>
    <City>MUM</City>
    <State>MH</State>
    <ZipCode>06001</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' FROM DUAL UNION ALL
SELECT EMPTY_CLOB() || '<AddressDetails>
    <SourceAddressID>11</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>11</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Remond Street</Address1>
    <City>HYD</City>
    <State>HY</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>' FROM DUAL UNION ALL
SELECT EMPTY_CLOB() || '<AddressDetails>
    <SourceAddressID>1</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>1</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>46 Main St</Address1>
    <City>BENG</City>
    <State>KT</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
</AddressDetails>' FROM DUAL;

Then, after the UPDATE the table contains:

XML_VALUE
<AddressDetails>
    <SourceAddressID>41</SourceAddressID>
    <SourceAddressLevel>BROKER</SourceAddressLevel>
    <SourceAddressLevelID>41</SourceAddressLevelID>
    <SourceAddressLevelType>BUSINESS</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>10 Tower Lane</Address1>
    <City>MUM</City>
    <State>MH</State>
    <ZipCode>06001</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>11</SourceAddressID>
    <SourceAddressLevel>INSURED</SourceAddressLevel>
    <SourceAddressLevelID>11</SourceAddressLevelID>
    <SourceAddressLevelType>INSURED</SourceAddressLevelType>
    <AddressType>BUSINESS</AddressType>
    <Address1>Remond Street</Address1>
    <City>HYD</City>
    <State>HY</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
    <PrimaryAddressYN>Y</PrimaryAddressYN>
</AddressDetails>
<AddressDetails>
    <SourceAddressID>1</SourceAddressID>
    <SourceAddressLevel>RISK</SourceAddressLevel>
    <SourceAddressLevelID>1</SourceAddressLevelID>
    <SourceAddressLevelType>LOCATION</SourceAddressLevelType>
    <AddressType>BUILDING</AddressType>
    <Address1>46 Main St</Address1>
    <City>BENG</City>
    <State>KT</State>
    <ZipCode>05250</ZipCode>
    <Country>IN</Country>
</AddressDetails>

fiddle

4

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