Server Startup Problem

Hi all,

The server was working fine previously.Webdynpro applications and portal were also being deployed succesfully.

But now when i try to start the server it is getting hung in the final stage of the process.I've checked the log files, it is giving some exception as follows.Please help me with this to resolve the issue.

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#1.5#00065BCCFF6E001B00000001000008A800040C6E62A3462F#1139568147749#com.sap.engine.services.jmx.MBeanServerInvoker##com.sap.engine.services.jmx.MBeanServerInvoker#######SAPEngine_System_Thread[impl:6]_20##0#0#Warning#1#/System/Server#Java###JMX connector exception occurred while processing external JMX request [ JMX request (java) v1.0 len: 314 | src: cluster target-node: 5957900 req: invoke params-number: 4 params-bytes: 0 | :name=com.sap.portal.prt.bridge.service.mbeans.PRTMBeanRuntime,j2eeType=PRTBridge_JMX_SECTION,SAP_J2EEClusterNode=5957900,SAP_J2EECluster="" null null null ]

[EXCEPTION]

#1#com.sap.engine.services.jmx.exception.JmxConnectorException: Unable to de-serialize request parameters, message [ JMX request (java) v1.0 len: 314 | src: cluster target-node: 5957900 req: invoke params-number: 4 params-bytes: 0 | :name=com.sap.portal.prt.bridge.service.mbeans.PRTMBeanRuntime,j2eeType=PRTBridge_JMX_SECTION,SAP_J2EEClusterNode=5957900,SAP_J2EECluster="" null null null ]

at com.sap.engine.services.jmx.RequestMessage.readParams(RequestMessage.java:526)

at com.sap.engine.services.jmx.RequestMessage.getParams(RequestMessage.java:575)

at com.sap.engine.services.jmx.MBeanServerInvoker.invokeMbs(MBeanServerInvoker.java:106)

at com.sap.engine.services.jmx.JmxServiceConnectorServer.receiveWait(JmxServiceConnectorServer.java:173)

at com.sap.engine.core.service630.context.cluster.message.MessageListenerWrapper.process(MessageListenerWrapper.java:81)

at com.sap.engine.core.cluster.impl6.ms.MSListenerThread.run(MSListenerThread.java:47)

at com.sap.engine.frame.core.thread.Task.run(Task.java:60)

at com.sap.engine.core.thread.impl6.SingleThread.execute(SingleThread.java:72)

at com.sap.engine.core.thread.impl6.SingleThread.run(SingleThread.java:142)

Caused by: javax.management.InstanceNotFoundException: MBean with name com.sap.default:name=com.sap.portal.prt.bridge.service.mbeans.PRTMBeanRuntime,j2eeType=PRTBridge_JMX_SECTION,SAP_J2EEClusterNode=5957900,SAP_J2EECluster=J2E not found in repository

at com.sap.pj.jmx.server.MBeanServerImpl.getClassLoaderFor(MBeanServerImpl.java:1408)

at com.sap.pj.jmx.server.interceptor.MBeanServerWrapperInterceptor.getClassLoaderFor(MBeanServerWrapperInterceptor.java:455)

at com.sap.engine.services.jmx.CompletionInterceptor.getClassLoaderFor(CompletionInterceptor.java:567)

at com.sap.pj.jmx.server.interceptor.BasicMBeanServerInterceptor.getClassLoaderFor(BasicMBeanServerInterceptor.java:438)

at com.sap.jmx.provider.ProviderInterceptor.getClassLoaderFor(ProviderInterceptor.java:327)

at com.sap.engine.services.jmx.RedirectInterceptor.getClassLoaderFor(RedirectInterceptor.java:501)

at com.sap.pj.jmx.server.interceptor.MBeanServerInterceptorChain.getClassLoaderFor(MBeanServerInterceptorChain.java:443)

at com.sap.engine.services.jmx.RequestMessage.readParams(RequestMessage.java:520)

...