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EM 13.5C: Receiving Frequent Alerts "oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener:1257" (Doc ID 3008538.1)

Last updated on MARCH 08, 2024

Applies to:

Enterprise Manager for Oracle Database - Version 13.5.0.0.0 and later
Information in this document applies to any platform.

Symptoms

In Enterprise Manager (EM) Cloud Control, The following alerts freqently reported.

java.lang.NullPointerException:java.util.concurrent.ConcurrentHashMap:936::oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener:1257

Error Stack observed from incident directory : <Agent_Inst>/diag/ofm/emagent/emagent/incident/incdir_XXX/readme.txt file

Incident Id: XXX
Incident Source: SYSTEM
Create Time: Wed Aug 16 08:40:04 CEST 2023
Problem Key: java.lang.NullPointerException:java.util.concurrent.ConcurrentHashMap:936::oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener:1257
ECID: 0000Obx4eHA3z0cLpic9yY1^r56000000F
Thread Id: 30
Error Message Id: OFM-99999

Context Values
--------------
threadName : PDBAQMetricsDB

Stack Trace
-----------
java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.findTargetForAlert(PDBAQReceivelet.java:1257)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.report(PDBAQReceivelet.java:717)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.run(PDBAQReceivelet.java:1226)
at oracle.sysman.gcagent.target.interaction.execution.ReceiveletInteractionMgr$3$1.run(ReceiveletInteractionMgr.java:1554)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at oracle.sysman.gcagent.util.system.GCAThread$RunnableWrapper.run(GCAThread.java:198)
at java.lang.Thread.run(Thread.java:750)

Error Stack Observed from <Agent_Inst>/sysman/log/gcagent.log file:

Internal error detected: java.lang.NullPointerException:java.util.concurrent.ConcurrentHashMap:936::oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener:1251

2023-06-30 08:40:03,730 [548:3D12F1DD:GC.DPExecutor2.18 (CDProps:oracle_pdb.<PDB_NAME>:ComputeIsRoot)] INFO - Computing of dynamic property: [ComputeIsRoot] for oracle_pdb.<PDB_NAME> is done ( 2 msec , error=false)
2023-06-30 08:40:03,774 [570:A0B61400] WARN - No such metric text_index_frag
2023-06-30 08:40:03,843 [571:44987CBA] WARN - No such metric text_index_frag
2023-06-30 08:40:04,808 [575:5A7550A3] ERROR - Critical error:

java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.findTargetForAlert(PDBAQReceivelet.java:1251)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.report(PDBAQReceivelet.java:711)
at oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener.run(PDBAQReceivelet.java:1220)
at oracle.sysman.gcagent.target.interaction.execution.ReceiveletInteractionMgr$3$1.run(ReceiveletInteractionMgr.java:1554)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at oracle.sysman.gcagent.util.system.GCAThread$RunnableWrapper.run(GCAThread.java:198)
at java.lang.Thread.run(Thread.java:748)

Below Document Fix patch applied on agent side :

EM13c : Receiving Frequent Alerts : oracle.sysman.db.receivelet.pdbaqmetricsdb.PDBAQReceivelet$QueueListener (Doc ID 2795606.1)

 

Cause

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In this Document
Symptoms
Cause
Solution
References


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