Question

I have a xml like below as a CLOB in an oracle column
How can i get rid of the first and last quotes.
Thanks in Advance

"<?xml version = '1.0' encoding='utf-8'?>
<b></>"

Answer 1

It’s not clear what you are asking, what you are trying to accomplish, or whether your data example is realistic or not, but here is an untested guess at what might help you:

UPDATE your_table
   SET your_clob_column = TRIM(BOTH '"' FROM your_clob_column)
 WHERE your_primary_key = 1;

Or maybe it’s an XMLType with CLOB storage?

DECLARE
    v_str   VARCHAR2(1000);
BEGIN
    SELECT your_xmltype_column.getStringVal()
      INTO v_str
      FROM your_table
     WHERE your_primary_key = 1;

    v_str := TRIM(BOTH '"' FROM v_str);

    UPDATE your_table
       SET your_xmltype_column = XMLType(v_str)
     WHERE your_primary_key = 1;

END;