Issue in updating the Huge XML by using updatexml function

Question

Hi All,
Database Credentails:
Oracle 9i R2.
I have a huge xml like this,
<Root>
<abc></abc>
<abc></abc>
<abc></abc>
</Root>
The <abc></abc> will be more than 10000 under the <Root> tag.
I have tried to update this xml by using the following script,
for i in 1 .. 10000
loop
SELECT UPDATEXML(v_xml,'/Root/abc['|| i ||']','<abc>'|| i || '<abc>')
INTO v_xml;
dbms_output.put_line(i); -- Just to check how many values were updated
end loop;
While executing the above sample code, i am getting the error called
INVALID XPATH EXPRESSION,
some times it is executing to some number after that i am getting the above error. when i try execute the same code again i will get error for different i value.
Could you please help me out to fix this bug/mistake for me. Please provide me some sample code for this.
Thanks in Advance,
Vinoth Kumar S.

Answer 1

You don't need any loop for this. simple UPDATEXML statement should do.
sql> WITH myxmltab AS
  2  (SELECT XMLTYPE('<Root>
  3  <abc>4</abc>
  4  <abc>5</abc>
  5  <abc> </abc>
  6  <abc> </abc>
  7  <abc> </abc>
  8  <abc></abc>
  9  <abc></abc>
10  <abc></abc>
11  <abc></abc>
12  <abc></abc>
13  </Root>') xmlcol FROM dual)
14  select UPDATEXML(t.column_value,'/abc',xmltype('<abc>' || rownum || '</abc>')) from myxmltab,
15  table(xmlsequence(extract(xmlcol,'/Root/abc'))) t;
UPDATEXML(T.COLUMN_VALUE,'/ABC',XMLTYPE('<ABC>'||ROWNUM||'</ABC>'))
<abc>1</abc>
<abc>2</abc>
<abc>3</abc>
<abc>4</abc>
<abc>5</abc>
<abc>6</abc>
<abc>7</abc>
<abc>8</abc>
<abc>9</abc>
<abc>10</abc>
10 rows selected.
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