hello all I am using Drools 4.0.1. I have one rule ( name = *valsubmitLoanApplication#0_1193115386921* ) in my rule file. When I am running my application on Tomcat Server first time, the validation is happening properly. But when I am running the same application second time(the server is still running), I am getting the following exception : java.lang.IllegalArgumentException: The rule called * valsubmitLoanApplication#0_1193115386921* is not valid. Check for compi le errors reported. at org.drools.common.AbstractRuleBase.addRule( AbstractRuleBase.java:433) at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java :265) at org.drools.common.AbstractRuleBase.addPackage( AbstractRuleBase.java:337) at com.wipro.evalidator.validation.impl.DroolsValidator.getXMLRuleBase( DroolsValidator.java:477) at com.wipro.evalidator.validation.impl.DroolsValidator.validateXML( DroolsValidator.java:308) at com.wipro.evalidator.validation.impl.DroolsValidator.validate( DroolsValidator.java:213) at com.wipro.evalidator.jbossaop.openrules.intercepts.WebTierInterceptor.invoke (WebTierInterceptor.java:57) at com.wipro.evalidator.efaces.service.EmpLoanResponseService$submitLoanApplication_N4694083757408641873.invokeNex t(EmpLoanResponseService$submitLoanApplication_N4694083757408641873.java) at com.wipro.evalidator.efaces.service.EmpLoanResponseService.submitLoanApplication (EmpLoanResponseService.java) at com.wipro.evalidator.efaces.service.EmpLoanRequestService.service( EmpLoanRequestService.java:92) at com.wipro.efaces.server.webrender.WebRenderServlet.process(Unknown Source) at com.wipro.efaces.server.webrender.WebRenderServlet.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process( Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection (Http11BaseProtocol.java:6 64) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket( PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt( LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run( ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) validateXML() *********has created the RuleBase instance ************** java.lang.NullPointerException at com.wipro.evalidator.validation.impl.DroolsValidator.validateXML( DroolsValidator.java:316) at com.wipro.evalidator.validation.impl.DroolsValidator.validate( DroolsValidator.java:213) at com.wipro.evalidator.jbossaop.openrules.intercepts.WebTierInterceptor.invoke (WebTierInterceptor.java:57) at com.wipro.evalidator.efaces.service.EmpLoanResponseService$submitLoanApplication_N4694083757408641873.invokeNex t(EmpLoanResponseService$submitLoanApplication_N4694083757408641873.java) at com.wipro.evalidator.efaces.service.EmpLoanResponseService.submitLoanApplication (EmpLoanResponseService.java) at com.wipro.evalidator.efaces.service.EmpLoanRequestService.service( EmpLoanRequestService.java:92) at com.wipro.efaces.server.webrender.WebRenderServlet.process(Unknown Source) at com.wipro.efaces.server.webrender.WebRenderServlet.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process( Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection (Http11BaseProtocol.java:6 64) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket( PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt( LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run( ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) And if i shutdown the server and again start the server ,the same process happens. Now please tell me that what can I do to resolve this problem? Thanks. *With Regards* *Prateek * The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users