淺談如何將Oracle導(dǎo)出到XML文件這里我們將簡(jiǎn)單談一談如何將Oracle導(dǎo)出到XML文件中，包括存放和調(diào)用的過(guò)程。XML的應(yīng)用十分廣泛，基于XML的數(shù)據(jù)處理也是開(kāi)發(fā)的熱點(diǎn)。以下操作在Oracle9i、10g版本成功步驟一：創(chuàng)建存放XML文件的目錄對(duì)象SQL>createorreplacedirectoryexp_diras’/opt’;/–注意此目錄要有oracle用戶的寫(xiě)權(quán)限步驟二：創(chuàng)建過(guò)程生成xml文件的主過(guò)程SQL>createorreplaceproceduretable2xml(result inoutnocopyclob,filenameinvarchar2)isxmlstr varchar2(32767);line varchar2(2000);fhandle utl_file.file_type;beginfhandle := utl_file.fopen(’EXP_DIR’, filename,’w');xmlstr := dbms_lob.substr(result,32767);loopexitwhenxmlstrisnull;line := substr(xmlstr,1, instr(xmlstr, chr(10)) -1);dbms_output.put_line(’| ‘|| line);utl_file.put_line(fhandle, line);xmlstr := substr(xmlstr, instr(xmlstr, chr(10)) +1);endloop;utl_file.fclose(fhandle);end;/步驟三：調(diào)用此過(guò)程declarequeryctx dbms_xmlquery.ctxType;result clob;beginqueryctx := dbms_xmlquery.newContext(’select user_id,user_name from lq_xml_test’);–存放查詢記錄集的SQLresult := dbms_xmlquery.getXML(queryctx);table2xml(result,’table2xml.xml’);dbms_xmlquery.closeContext(queryctx);end;