使用dbms_lob更新大型xml列

Question

我必须更新xml为252000 char的列。我试过这个How to insert/update larger size of data in the Oracle tables? 但我仍然有错误＆字符串文字太长＆＃39;。

我想用DBMS_LOB包编写一些代码，如下所示：

declare
  c1 clob;
  c2 varchar2(32000);
begin
  c1 := 'abc';
  c2 := 'text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'some more text, which contains 32 000 characters';
  dbms_lob.append(c1, c2);
  c2 := 'last text, which contains 27 372 characters';
  dbms_lob.append(c1, c2);
  update table set d1= c1 where d2id=12;
end;

有没有其他方式编写查询，我可以将整个xml放在一个？