[root@testdb log]# cat ./server.error.log
server 05-19/14:58:02 ERROR [http-bio-127.0.0.1-8080-exec-5] CommonExecutor -
java.lang.NullPointerException
   at ru.bitel.bgbilling.kernel.tariff.server.bean.TariffGroupDao.close(TariffGroupDao.java:357)
   at bitel.billing.server.contract.action.ActionContractTariffPlan.listAvaliableTariffPlans(ActionContractTariffPlan.java:115)
   at bitel.billing.server.contract.action.ActionContractTariffPlan.doAction(ActionContractTariffPlan.java:70)
   at bitel.billing.server.Executer.doModule(SourceFile:600)
   at bitel.billing.server.Executer$1.run(SourceFile:199)
   at java.security.AccessController.doPrivileged(Native Method)
   at javax.security.auth.Subject.doAs(Subject.java:422)
   at bitel.billing.server.Executer.doPost(SourceFile:193)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at ru.bitel.common.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:54)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.lang.Thread.run(Thread.java:745)
server 05-19/14:58:04 ERROR [http-bio-127.0.0.1-8080-exec-6] CommonExecutor -
java.lang.NullPointerException
   at ru.bitel.bgbilling.kernel.tariff.server.bean.TariffGroupDao.close(TariffGroupDao.java:357)
   at bitel.billing.server.contract.action.ActionContractTariffPlan.listAvaliableTariffPlans(ActionContractTariffPlan.java:96)
   at bitel.billing.server.contract.action.ActionContractTariffPlan.doAction(ActionContractTariffPlan.java:60)
   at bitel.billing.server.Executer.doModule(SourceFile:600)
   at bitel.billing.server.Executer$1.run(SourceFile:199)
   at java.security.AccessController.doPrivileged(Native Method)
   at javax.security.auth.Subject.doAs(Subject.java:422)
   at bitel.billing.server.Executer.doPost(SourceFile:193)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at ru.bitel.common.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:54)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.lang.Thread.run(Thread.java:745)