<ABT><pid>101</pid><date>10/12/13</date><name>AAA</name></ABT>
<ABT><pid>102</pid><date>11/12/13</date><name>BBB</name></ABT>
<ABT><pid>101</pid><date>09/12/13</date><name>AAA</name></ABT>
<ABT><pid>102</pid><date>24/12/13</date><name>BBB</name></ABT>
<JRE><pid>101</pid><date>01/12/13</date><name>AAA</name></JRE>
<JRE><pid>102</pid><date>02/12/13</date><name>BBB</name></JRE>

<JRE><pid>101</pid><date>01/12/13</date><name>AAA</name></JRE>
<ABT><pid>101</pid><date>09/12/13</date><name>AAA</name></ABT>
<ABT><pid>101</pid><date>10/12/13</date><name>AAA</name></ABT>
<JRE><pid>102</pid><date>02/12/13</date><name>BBB</name></JRE>
<ABT><pid>102</pid><date>11/12/13</date><name>BBB</name></ABT>
<ABT><pid>102</pid><date>24/12/13</date><name>BBB</name></ABT>

$ sed -e 's/<pid>/& /' -e 's/<date>/& /' file | sort -nk2 -k3 | sed 's/ //g'
<JRE><pid>101</pid><date>01/12/13</date><name>AAA</name></JRE>
<ABT><pid>101</pid><date>09/12/13</date><name>AAA</name></ABT>
<ABT><pid>101</pid><date>10/12/13</date><name>AAA</name></ABT>
<JRE><pid>102</pid><date>02/12/13</date><name>BBB</name></JRE>
<ABT><pid>102</pid><date>11/12/13</date><name>BBB</name></ABT>
<ABT><pid>102</pid><date>24/12/13</date><name>BBB</name></ABT>

xidel --xquery 'for $i in doc("file.xml")/* order by $i/pid, $i, $i/date return $i' --output-format xml

<root>
    <ABT>
        <pid>101</pid>
        <date>10/12/13</date>
        <name>AAA</name>
    </ABT>
    <ABT>
        <pid>102</pid>
        <date>11/12/13</date>
        <name>BBB</name>
    </ABT>
    <ABT>
        <pid>101</pid>
        <date>09/12/13</date>
        <name>AAA</name>
    </ABT>
    <ABT>
        <pid>102</pid>
        <date>24/12/13</date>
        <name>BBB</name>
    </ABT>
    <JRE>
        <pid>101</pid>
        <date>01/12/13</date>
        <name>AAA</name>
    </JRE>
    <JRE>
        <pid>102</pid>
        <date>02/12/13</date>
        <name>BBB</name>
    </JRE>
</root>

xidel --xquery '<root>
                {for $i in doc("file.xml")/*/*
                order by $i/pid, $i, $i/date
                return $i}
                </root>' --output-format xml

xidel --xquery '<root>{for $i in doc("file.xml")/*/* order by $i/pid, $i, $i/date return $i}</root>' --output-format xml