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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>We are currently using drools 5.0.1 for processing business rules. But we are currently facing an issue where if we invoke the rule using 10 concurrent requests , thread gets locked . The error is as below .<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><table class=MsoNormalTable border=1 cellpadding=0><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Deadlock/Blocked <o:p></o:p></span></p></td></tr><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Monitor</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Owns Monitor Lock on org/drools/rule/JavaDialectRuntimeData$PackageClassLoader@0E99F9B8/0E99F9C4 <br>Waiting for Monitor Lock on org/drools/rule/CompositeClassLoader@0DB50DC0/0DB50DCC <o:p></o:p></span></p></td></tr><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Java Stack</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>at java/lang/ClassLoader.loadClass(ClassLoader.java:606(Compiled Code)) <br>at java/lang/Class.forNameImpl(Native Method) <br>at java/lang/Class.forName(Class.java:163(Compiled Code)) <br>at org/drools/rule/JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:458(Compiled Code)) <br>at java/lang/ClassLoader.loadClass(ClassLoader.java:606(Compiled Code)) <br>at /Rule_AutoUW_Rule_BR12Constants_153_0ConsequenceInvoker.evaluate(Rule_AutoUW_Rule_BR12Constants_153_0ConsequenceInvoker.java:16) <br>at org/drools/common/DefaultAgenda.fireActivation(DefaultAgenda.java:934(Compiled Code)) <br>at org/drools/common/DefaultAgenda.fireNextItem(DefaultAgenda.java:885(Compiled Code)) <br>at org/drools/common/DefaultAgenda.fireAllRules(DefaultAgenda.java:1086(Compiled Code)) <br>at org/drools/common/AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:661(Compiled Code)) <br>at org/drools/common/AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:637(Compiled Code)) <br>at org/drools/reteoo/ReteooStatelessSession.execute(ReteooStatelessSession.java:203(Compiled Code)) <o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Can you please advice .This has been occurring on Production systems and causing failures <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Trebuchet MS","sans-serif";color:#666366'>Thanks & Regards,<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#00476B'>Smita Deshpande<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Trebuchet MS","sans-serif";color:#D42E12'>Technical Specialist - DU UK Insurance</span><span style='font-size:9.0pt;font-family:"Trebuchet MS","sans-serif";color:#666366'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#666366'>Mastek Ltd | Cerebrum,2nd Floor, KalyaniNagar, Pune, Maharashtra, INDIA<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#666366'>(M)(0)9823041314 | (T) 91 20 66072000 Extn - 2256 | VOIP: 729 | </span><u><span style='font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:blue'><a href="http://www.mastek.com/"><span style='font-family:"Calibri","sans-serif";color:blue'>www.mastek.com</span></a> <o:p></o:p></span></u></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#666366'>Email:- </span><span style='font-size:8.0pt;font-family:"Trebuchet MS","sans-serif";color:#0070C0'><a href="mailto:smita.deshpande@mastek.com"><span style='color:blue'>smita.deshpande@mastek.com</span></a></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div><br><br><table bgcolor=white style="color:black"><tr><td>MASTEK LTD.<br>
In the US, we're called MAJESCOMASTEK<br>
<br>
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