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    <p>Okay, so what is happening is this:</p> <pre><code>SQL&gt; insert into t42 2 (id, version, type, data) 3 values (2, 0, 2, '&lt;?xml version="1.0" encoding="UTF-8"&gt;&lt;Test&gt;&lt;buffer&gt;&lt;A&gt;&lt;/buffer&gt;&lt;/Test&gt;') 4 / values (2, 0, 2, '&lt;?xml version="1.0" encoding="UTF-8"&gt;&lt;Test&gt;&lt;buffer&gt;&lt;A&gt;&lt;/buffer&gt;&lt;/Test&gt;') * ERROR at line 3: ORA-01465: invalid hex number SQL&gt; </code></pre> <p>This is because you are inserting ASCII text in a binary field. Binary fields expect Hexadecimal characters, and things like <code>&lt;</code>. <code>?</code>, <code>=</code> , etc ain't hex. What you need to do is cast it into hex, like this:</p> <pre><code>SQL&gt; insert into t42 2 values (2, 0, 2, utl_raw.cast_to_raw('&lt;?xml version="1.0" encoding="UTF-8"&gt;&lt;Test&gt;&lt;buffer&gt;&lt;A&gt;&lt;/buffer&gt;&lt;/Test&gt;')) 3 / 1 row created. SQL&gt; select * from t42 2 / ID TYPE VERSION ---------- ---------- ---------- DATA -------------------------------------------------------------------------------- 2 0 2 3C3F786D6C2076657273696F6E3D22312E302220656E636F64696E673D225554462D38223E3C5465 73743E3C6275666665723E3C413E3C2F6275666665723E3C2F546573743E SQL&gt; </code></pre> <p>This works easily because I am using Oracle 11g. If you are on a much earlier version of Oracle - definitley 8, possibly 9 - then you might have to use a two-step process. First insert a marker like this:</p> <pre><code>SQL&gt; insert into t42 2 values (1, 0, 1, empty_blob()) 3 / 1 row created. SQL&gt; </code></pre> <p>You can then populate the BLOB column like this:</p> <pre><code>SQL&gt; declare 2 b blob; 3 begin 4 b := utl_raw.cast_to_raw(rpad('FF',32767,'FF')); 5 update t42 6 set data = b 7 where id = 1; 8 end; 9 / PL/SQL procedure successfully completed. SQL&gt; select * from t42 2 / ID TYPE VERSION ---------- ---------- ---------- DATA -------------------------------------------------------------------------------- 1 0 1 46464646464646464646464646464646464646464646464646464646464646464646464646464646 46464646464646464646464646464646464646464646464646464646464646464646464646464646 SQL&gt; </code></pre> <p>Incidentally, if you're storing XML data, why store it as a BLOB rather than either as character data (CLOB) or from 9i onwards the native XMLType type? Well, one reason for not using XMLType is that your text is not well-formed XML, but I presume that is just an oversight ;)</p> <pre><code>SQL&gt; alter table t42 add xdata xmltype; Table altered. SQL&gt; insert into t42 2 (id, version, type, xdata) 3 values (4, 0, 2, xmltype('&lt;?xml version="1.0" encoding="UTF-8"&gt;&lt;Test&gt;&lt;buffer&gt;&lt;A&gt;&lt;/buffer&gt;&lt;/Test&gt;')) 4 / values (4, 0, 2, xmltype('&lt;?xml version="1.0" encoding="UTF-8"&gt;&lt;Test&gt;&lt;buffer&gt;&lt;A&gt;&lt;/buffer&gt;&lt;/Test&gt;')) * ERROR at line 3: ORA-31011: XML parsing failed ORA-19202: Error occurred in XML processing LPX-00254: invalid XML declaration Error at line 1 ORA-06512: at "SYS.XMLTYPE", line 310 ORA-06512: at line 1 SQL&gt; insert into t42 2 (id, version, type, xdata) 3 values (4, 0, 2, xmltype('&lt;?xml version="1.0" encoding="UTF-8"?&gt;&lt;Test&gt;&lt;buffer&gt;A&lt;/buffer&gt;&lt;/Test&gt;')) 4 / 1 row created. SQL&gt; select * from t42 2 / ID TYPE VERSION ---------- ---------- ---------- DATA -------------------------------------------------------------------------------- XDATA -------------------------------------------------------------------------------- 4 2 0 &lt;?xml version="1.0" encoding="UTF-8"?&gt;&lt;Test&gt;&lt;buffer&gt;A&lt;/buffer&gt;&lt;/Test&gt; SQL&gt; </code></pre>
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