Impossible to run anymore a jBPM query after a socket error
Hello,
I developped a web application with jBPM which works fine most of the time.
My web application is deployed into Tomcat 6.
Sometimes after a week-end, my web application cannot query anymore jBPM. The problem persists when I use a new session.
The only way to solve the problem is to restart my web application context in Tomcat.
I do not keep any jBPM objects. For each request, I create a new context.
I do not know if there is a way to force jBPM to give me a clean new instance of jbpmConfiguration.
JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();
JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
try {
(...)
User jbpmUser = identitySession.getUserByName(currentUser);
if (jbpmUser != null) {
List allTaskInstanceList = jbpmContext.getTaskList(currentUser);
(...)
}
} catch (Exception e) {
(...)
} finally {
jbpmContext.close();
}
Do you have any ideas? Did you encounter this problem before?
Thanks,
Val
Exceptions:
org.jbpm.JbpmException: couldn't get task instances list for actor 'hca' at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:65) at org.jbpm.JbpmContext.getTaskList(JbpmContext.java:189) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.lookupNavigationList(TaskListTableTasklet.java:93) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.performSort(TaskListTableTasklet.java:149) at com.rsd.rbs.tasklet.TableTasklet.perform(TableTasklet.java:86) at com.rsd.rbs.action.UpdateTableAction.updateTable(UpdateTableAction.java:146) at com.rsd.rbs.action.UpdateTableAction.perform(UpdateTableAction.java:99) at org.apache.struts.action.Action.execute(Action.java:228) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1211) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:424) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.rsd.rbs.redirect.AbstractRedirectAdapter.processActionForward(AbstractRedirectAdapter.java:105) at com.rsd.rbs.action.MappingServlet.processForward(MappingServlet.java:520) at com.rsd.rbs.action.MappingServlet.processRequest(MappingServlet.java:332) at com.rsd.rbs.action.MappingServlet.doGet(MappingServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2223) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:61) ... 37 more Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Software caused connection abort: socket write error STACKTRACE: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2637) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1554) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1665) at com.mysql.jdbc.Connection.execSQL(Connection.java:3176) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1153) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1266) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) at org.hibernate.loader.Loader.getResultSet(Loader.java:1787) at org.hibernate.loader.Loader.doQuery(Loader.java:674) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:61) at org.jbpm.JbpmContext.getTaskList(JbpmContext.java:189) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.lookupNavigationList(TaskListTableTasklet.java:93) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.performSort(TaskListTableTasklet.java:149) at com.rsd.rbs.tasklet.TableTasklet.perform(TableTasklet.java:86) at com.rsd.rbs.action.UpdateTableAction.updateTable(UpdateTableAction.java:146) at com.rsd.rbs.action.UpdateTableAction.perform(UpdateTableAction.java:99) at org.apache.struts.action.Action.execute(Action.java:228) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1211) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:424) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.rsd.rbs.redirect.AbstractRedirectAdapter.processActionForward(AbstractRedirectAdapter.java:105) at com.rsd.rbs.action.MappingServlet.processForward(MappingServlet.java:520) at com.rsd.rbs.action.MappingServlet.processRequest(MappingServlet.java:332) at com.rsd.rbs.action.MappingServlet.doGet(MappingServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) ** END NESTED EXCEPTION ** Last packet sent to the server was 0 ms ago. at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2652) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1554) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1665) at com.mysql.jdbc.Connection.execSQL(Connection.java:3176) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1153) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1266) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) at org.hibernate.loader.Loader.getResultSet(Loader.java:1787) at org.hibernate.loader.Loader.doQuery(Loader.java:674) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) ... 45 more 2008-06-16 08:52:43 ERROR [home.fol.TaskListTableTasklet][10.10.22.102][hca]: Task list creation org.jbpm.JbpmException: couldn't get task instances list for actor 'hca' at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:65) at org.jbpm.JbpmContext.getTaskList(JbpmContext.java:189) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.lookupNavigationList(TaskListTableTasklet.java:93) at com.rsd.rbsfol.tasklet.bpm.NavigationTableTasklet.perform(NavigationTableTasklet.java:41) at com.rsd.rbs.tasklet.TableTasklet.perform(TableTasklet.java:98) at com.rsd.rbs.action.UpdateTableAction.updateTable(UpdateTableAction.java:146) at com.rsd.rbs.action.UpdateTableAction.perform(UpdateTableAction.java:99) at org.apache.struts.action.Action.execute(Action.java:228) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1211) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:424) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.rsd.rbs.redirect.AbstractRedirectAdapter.processActionForward(AbstractRedirectAdapter.java:105) at com.rsd.rbs.action.MappingServlet.processForward(MappingServlet.java:520) at com.rsd.rbs.action.MappingServlet.processRequest(MappingServlet.java:332) at com.rsd.rbs.action.MappingServlet.doGet(MappingServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:2223) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:61) ... 37 more Caused by: com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed due to underlying exception/error: ** BEGIN NESTED EXCEPTION ** com.mysql.jdbc.CommunicationsException MESSAGE: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.SocketException MESSAGE: Software caused connection abort: socket write error STACKTRACE: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2637) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1554) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1665) at com.mysql.jdbc.Connection.execSQL(Connection.java:3176) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1153) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1266) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) at org.hibernate.loader.Loader.getResultSet(Loader.java:1787) at org.hibernate.loader.Loader.doQuery(Loader.java:674) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:61) at org.jbpm.JbpmContext.getTaskList(JbpmContext.java:189) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.lookupNavigationList(TaskListTableTasklet.java:93) at com.rsd.rbsfol.tasklet.bpm.TaskListTableTasklet.performSort(TaskListTableTasklet.java:149) at com.rsd.rbs.tasklet.TableTasklet.perform(TableTasklet.java:86) at com.rsd.rbs.action.UpdateTableAction.updateTable(UpdateTableAction.java:146) at com.rsd.rbs.action.UpdateTableAction.perform(UpdateTableAction.java:99) at org.apache.struts.action.Action.execute(Action.java:228) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1211) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:424) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at com.rsd.rbs.redirect.AbstractRedirectAdapter.processActionForward(AbstractRedirectAdapter.java:105) at com.rsd.rbs.action.MappingServlet.processForward(MappingServlet.java:520) at com.rsd.rbs.action.MappingServlet.processRequest(MappingServlet.java:332) at com.rsd.rbs.action.MappingServlet.doGet(MappingServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) ** END NESTED EXCEPTION ** Last packet sent to the server was 0 ms ago. STACKTRACE: com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION **
