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Several emagent Processes Spawned Starting Application Server Control 10.1.2.3.0 And AS Control Is Not Functional (Doc ID 1229023.1)

Last updated on AUGUST 07, 2020

Applies to:

Oracle Fusion Middleware - Version 10.1.2.0.2 to 10.1.2.3.0 [Release AS10gR2]
Oracle Solaris on SPARC (64-bit)

Symptoms

In an Application Server 10.1.2.3.0 installation on Solaris 10, when starting the Application Server Control (AS Control) the emagent process fails to start up successfully.

The AS Control home page URL can be reached but after providing the username and password the home page is displayed as blank.  The following errors related to host metrics are repeated many times in the $ORACLE_HOME/sysman/log/emagent.trc file:


Date Time Thread-6016 ERROR engine: [<hostname>,<Date Time Thread-6016 ERROR engine: [<Date Time Thread-6016 ERROR engine: [<Date Time Thread-6016 ERROR engine: [<hostname>,<


Checking with ps -ef | grep emagent there are several emagent processes instead of just of just one, which would be the expected output.

$ ps -ef|grep emagent

<USER> <PID> <PID> <VAALUES>  <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES> <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES> <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES>  <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES>  <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES> <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES> <ORACLE_HOME>/bin/emagent
<USER> <PID> <PID> <VAALUES>  <ORACLE_HOME>/bin/emagent


Getting a pstack of the emagent processes show the following stack:


$ pstack <PID>

<PID>: /ORACLE_HOME/bin/emagent
<VALUE> _close (<VALUE>
<VALUE> snmeurm_close <VALUE>
<VALUE> snmejcp_Process_run_need_pipes <VALUE>
<VALUE> nmefos_executeCommand <VALUE>
<VALUE> nmefos_getLocalMetric <VALUE>
<VALUE> nmefoslt_getMetric <VALUE>
<VALUE> nmefmgr_getCLibMetric <VALUE>
<VALUE> nmefmgr_getMetricWithBlocking <VALUE>
<VALUE> nmeegd_computeResult <VALUE>
<VALUE> nmeegd_GetMetricData <VALUE>
<VALUE> nmeemcm_MetricCache_getMetric <VALUE>
<VALUE> nmee_MetricEngine_getMetricResult <VALUE>
<VALUE> nmecmc_MetricColl_collectMetric <VALUE>
<VALUE> nmecci_run <VALUE>
<VALUE> nmeuv_Vector_enumerate0 <VALUE>
<VALUE> nmecct_CollectionThread_run <VALUE>
<VALUE> nmesse_executeWork <VALUE>
<VALUE> nmttp_run <VALUE>
<VALUE> nmttp_runWorkerThread <VALUE>
<VALUE> _lwp_start <VALUE>
<VALUE> read <VALUE>
<VALUE> JVM_Read <VALUE>
<VALUE> Java_java_net_SocketInputStream_socketRead0 <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_ <VALUE>
<VALUE> __1cKReflectionGinvoke6FnTinstanceKlassHandle_nMmethodHandle_nGHandle_inOobjArrayHandle_nJBasicType_4ipnGThread__pnHoopDesc__ <VALUE>
<VALUE> __1cKReflectionNinvoke_method6FpnHoopDesc_nGHandle_nOobjArrayHandle_pnGThread__2_ <VALUE>
<VALUE> JVM_InvokeMethod <VALUE>
<VALUE> Java_sun_reflect_NativeMethodAccessorImpl_invoke0 <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> ???????? <VALUE>
<VALUE> __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_ <VALUE>
<VALUE> __1cRjni_invoke_static6FpnHJNIEnv__pnJJavaValue_pnI_jobject_nLJNICallType_pnK_jmethodID_pnSJNI_ArgumentPusher_pnGThread__v_ <VALUE>
<VALUE> jni_CallStaticObjectMethod <VALUE>
<VALUE> nmefmgr_getJNIfetchlet <VALUE>
<VALUE> nmefmgr_getMetricWithBlocking <VALUE>
<VALUE> nmeegd_computeResult <VALUE>
<VALUE> nmeegd_GetMetricData <VALUE>
<VALUE> nmeemcm_MetricCache_getMetric <VALUE>
<VALUE> nmee_MetricEngine_getMetricResult <VALUE>
<VALUE> nmecmc_MetricColl_collectMetric <VALUE>
<VALUE> nmecci_run <VALUE>
<VALUE> nmeuv_Vector_enumerate0 <VALUE>
<VALUE> nmecct_CollectionThread_run <VALUE>
<VALUE> nmesse_executeWork <VALUE>
<VALUE> nmttp_run <VALUE>
<VALUE> nmttp_runWorkerThread <VALUE>
<VALUE> _lwp_start <VALUE>





Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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