hi,

I installed the Esper feature from the p2 repo to CEP and restart the
server.

Got this exception.

May 24, 2012 11:18:22 AM org.apache.catalina.session.StandardManager doLoad
SEVERE: IOException while loading persisted sessions:
java.io.WriteAbortedException: writing aborted;
java.io.NotSerializableException:
org.eclipse.equinox.internal.p2.engine.ProvisioningPlan
java.io.WriteAbortedException: writing aborted;
java.io.NotSerializableException:
org.eclipse.equinox.internal.p2.engine.ProvisioningPlan
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1333)
    at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
    at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
    at
org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1595)
    at
org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:1060)
    at
org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:284)
    at
org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at
org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5282)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
    at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.NotSerializableException:
org.eclipse.equinox.internal.p2.engine.ProvisioningPlan
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1156)
    at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
    at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
    at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
    at
org.apache.catalina.session.StandardSession.writeObject(StandardSession.java:1671)
    at
org.apache.catalina.session.StandardSession.writeObjectData(StandardSession.java:1077)
    at
org.apache.catalina.session.StandardManager.doUnload(StandardManager.java:432)
    at
org.apache.catalina.session.StandardManager.unload(StandardManager.java:353)
    at
org.apache.catalina.session.StandardManager.stopInternal(StandardManager.java:518)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at
org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5462)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at
org.wso2.carbon.tomcat.ext.internal.CarbonTomcatServiceComponent.deactivate(CarbonTomcatServiceComponent.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponent.deactivate(ServiceComponent.java:379)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.deactivate(ServiceComponentProp.java:161)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.dispose(ServiceComponentProp.java:388)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.dispose(ServiceComponentProp.java:102)
    at
org.eclipse.equinox.internal.ds.InstanceProcess.disposeInstances(InstanceProcess.java:343)
    at
org.eclipse.equinox.internal.ds.InstanceProcess.disposeInstances(InstanceProcess.java:305)
    at
org.eclipse.equinox.internal.ds.Resolver.disposeComponentConfigs(Resolver.java:685)
    at
org.eclipse.equinox.internal.ds.Resolver.disableComponents(Resolver.java:661)
    at
org.eclipse.equinox.internal.ds.SCRManager.stoppingBundle(SCRManager.java:553)
    at
org.eclipse.equinox.internal.ds.SCRManager.bundleChanged(SCRManager.java:232)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:847)
    at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1522)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1458)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1453)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:506)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:565)
    at
org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1160)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:595)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
    at
org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
    at
org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:690)
    at
org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:597)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:390)
    at
org.wso2.carbon.core.init.CarbonServerManager.shutdown(CarbonServerManager.java:822)
    at
org.wso2.carbon.core.init.CarbonServerManager.shutdownGracefully(CarbonServerManager.java:855)
    at
org.wso2.carbon.core.init.CarbonServerManager$4.run(CarbonServerManager.java:865)
May 24, 2012 11:18:22 AM org.apache.catalina.session.StandardManager
startInternal
SEVERE: Exception loading sessions from persistent storage
java.io.WriteAbortedException: writing aborted;
java.io.NotSerializableException:
org.eclipse.equinox.internal.p2.engine.ProvisioningPlan
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1333)
    at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
    at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
    at
org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1595)
    at
org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:1060)
    at
org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:284)
    at
org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at
org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5282)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
    at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.NotSerializableException:
org.eclipse.equinox.internal.p2.engine.ProvisioningPlan
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1156)
    at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)
    at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)
    at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
    at
org.apache.catalina.session.StandardSession.writeObject(StandardSession.java:1671)
    at
org.apache.catalina.session.StandardSession.writeObjectData(StandardSession.java:1077)
    at
org.apache.catalina.session.StandardManager.doUnload(StandardManager.java:432)
    at
org.apache.catalina.session.StandardManager.unload(StandardManager.java:353)
    at
org.apache.catalina.session.StandardManager.stopInternal(StandardManager.java:518)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at
org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5462)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
    at
org.wso2.carbon.tomcat.ext.internal.CarbonTomcatServiceComponent.deactivate(CarbonTomcatServiceComponent.java:64)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponent.deactivate(ServiceComponent.java:379)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.deactivate(ServiceComponentProp.java:161)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.dispose(ServiceComponentProp.java:388)
    at
org.eclipse.equinox.internal.ds.model.ServiceComponentProp.dispose(ServiceComponentProp.java:102)
    at
org.eclipse.equinox.internal.ds.InstanceProcess.disposeInstances(InstanceProcess.java:343)
    at
org.eclipse.equinox.internal.ds.InstanceProcess.disposeInstances(InstanceProcess.java:305)
    at
org.eclipse.equinox.internal.ds.Resolver.disposeComponentConfigs(Resolver.java:685)
    at
org.eclipse.equinox.internal.ds.Resolver.disableComponents(Resolver.java:661)
    at
org.eclipse.equinox.internal.ds.SCRManager.stoppingBundle(SCRManager.java:553)
    at
org.eclipse.equinox.internal.ds.SCRManager.bundleChanged(SCRManager.java:232)
    at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:847)
    at
org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at
org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1522)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1458)
    at
org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1453)
    at
org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:506)
    at
org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:565)
    at
org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1160)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:595)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
    at
org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
    at
org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
    at
org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:690)
    at
org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:597)
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:390)
    at
org.wso2.carbon.core.init.CarbonServerManager.shutdown(CarbonServerManager.java:822)
    at
org.wso2.carbon.core.init.CarbonServerManager.shutdownGracefully(CarbonServerManager.java:855)
    at
org.wso2.carbon.core.init.CarbonServerManager$4.run(CarbonServerManager.java:865)

thanks,
Amila.

-- 
*Amila Suriarachchi*

Software Architect
WSO2 Inc. ; http://wso2.com
lean . enterprise . middleware

phone : +94 71 3082805
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