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</o:shapelayout></xml><![endif]--></head><body lang=NL link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>We try to use undertow.js for database interactions and this works well as long as the queries do not fail. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>But in case something breaks, the JDBC connection seems to stall in wildfly and can not be closed in any matter. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>(There isn’t even a connection.close() statement available in undertow.js ? )<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>Function demo() {<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><b><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#8DCBE2;background:black;mso-highlight:black'>var</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#C7CDD1;background:black;mso-highlight:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#BED6FF;background:black;mso-highlight:black'>db</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#C7CDD1;background:black;mso-highlight:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#D8D8D8;background:black;mso-highlight:black'>=</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#C7CDD1;background:black;mso-highlight:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#D8D8D8;background:black;mso-highlight:black'>$undertow.</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:white;background:black;mso-highlight:black'>resolve</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#D8D8D8;background:black;mso-highlight:black'>(</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#FFC600;background:black;mso-highlight:black'>"config"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Consolas;color:#D8D8D8;background:black;mso-highlight:black'>);</span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'><o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>try{<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> var query = "select ID as maxID from null"; // this will fail for sure<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> var dbresult = db.selectOne(query);<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> // now undertow.js will jump to the catch() block<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> result.db = dbresult['maxID'];<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> return result; <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> }catch(ex){<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'> print(ex.toString());<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>Every time we call the above function the JDBC driver will make a new connection to the database and the old ones will remain connected and will never be cleared. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>This continues until the </span><span lang=EN-GB>Max Pool Size: </span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1A3E46'>is reached. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Systems tested: Wildfly 10 /11 on Windows and Linux<o:p></o:p></span></p></div></body></html>