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ORACLE导出到XML文件中

以下操作在oracle9i、10g版本成功

步骤一：创建存放XML文件的目录对象

SQL>create or replace directory exp_dir as '/opt';
/

--注意此目录要有oracle用户的写权限

步骤二：创建过程生成xml文件的主过程

SQL>create or replace procedure table2xml(result   in out nocopy clob,
                                         filename in varchar2) is
xmlstr varchar2(32767);
line    varchar2(2000);
fhandle utl_file.file_type;
begin
fhandle := utl_file.fopen('EXP_DIR', filename, 'w');
xmlstr := dbms_lob.substr(result, 32767);
loop
    exit when xmlstr is null;
    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);
end loop;
utl_file.fclose(fhandle);
end;
/

步骤三：调用此过程

declare
queryctx dbms_xmlquery.ctxType;
result clob;
begin
queryctx := dbms_xmlquery.newContext('select user_id,user_name from lq_xml_test');--存放查询记录集的SQL
result := dbms_xmlquery.getXML(queryctx);
table2xml(result, 'table2xml.xml');
dbms_xmlquery.closeContext(queryctx);
end;
/

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ORACLE数据导出到XML文件中

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