Shamal Karunarathne [
https://community.jboss.org/people/shamalk] created the discussion
"[jbpm-console][Error] result returns more than one elements"
To view the discussion, visit:
https://community.jboss.org/message/745345#745345
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Hi,
I'm getting an error when I try to start a process in JBPM-Console. This usually
happens after a jboss restart or a system restart (not everytime).
The only way I can fix this is by dropping the databases (jbpm5, task) and recreating
them. Note: I'm using mysql as my database. I have attached my standalone.xml and the
persistence.xml
(~/Desktop/jbpm-installer/jboss-as-7.0.2.Final/standalone/deployments/jbpm-gwt-console-server.war/WEB-INF/classes/META-INF/persistence.xml)
with this.
Could you help me to resolve this problem?
13:43:35,006 ERROR
[org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/gwt-console-server].[Resteasy]]
(http-localhost-127.0.0.1-8080-5) Servlet.service() for servlet Resteasy threw exception:
org.jboss.resteasy.spi.UnhandledException: javax.persistence.NonUniqueResultException:
result returns more than one elements
at
org.jboss.resteasy.core.SynchronousDispatcher.unwrapException(SynchronousDispatcher.java:345)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:321)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:214)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:190)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:534)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:496)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
[resteasy-jaxrs-2.2.1.GA.jar:]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.jboss.bpm.console.server.util.GWTJsonFilter.doFilter(GWTJsonFilter.java:59)
[classes:]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:139)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:480)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.jboss.as.web.NamingValve.invoke(NamingValve.java:57)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:154)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:667)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:952)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at java.lang.Thread.run(Thread.java:680) [:1.6.0_33]
Caused by: javax.persistence.NonUniqueResultException: result returns more than one
elements
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:109)
[hibernate-entitymanager-3.4.0.GA.jar:]
at
org.jbpm.process.audit.JPAProcessInstanceDbLog.findProcessInstance(JPAProcessInstanceDbLog.java:124)
[jbpm-bam-5.3.0.Final.jar:]
at
org.jbpm.integration.console.CommandDelegate.startProcess(CommandDelegate.java:121)
[jbpm-gwt-core-5.3.0.Final.jar:]
at
org.jbpm.integration.console.ProcessManagement.newInstance(ProcessManagement.java:88)
[jbpm-gwt-core-5.3.0.Final.jar:]
at
org.jboss.bpm.console.server.FormProcessingFacade.startProcessWithUI(FormProcessingFacade.java:197)
[classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_33]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[:1.6.0_33]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[:1.6.0_33]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_33]
at
org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:255)
[resteasy-jaxrs-2.2.1.GA.jar:]
at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:220)
[resteasy-jaxrs-2.2.1.GA.jar:]
at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:209)
[resteasy-jaxrs-2.2.1.GA.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:519)
[resteasy-jaxrs-2.2.1.GA.jar:]
... 24 more
13:43:59,645 WARN [org.jboss.seam.transaction.TransactionServletListener]
(http-localhost-127.0.0.1-8080-5) Transaction was already started before the listener
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