IT17677: SVC PERFORMANCE MONITOR TASK FAILS TO PROPERLY HANDLE SAMPLE DATA ONCE IT'S COLLECTED, RESULTING IN HWNPM2133W MESSAGES

IBM Spectrum Control V5.2.13 (March 2017)
IBM Spectrum Control V5.2.14 (May 2017)
IBM Spectrum Control V5.2.15 (August 2017)
IBM Spectrum Control V5.2.15.2 (November 2017)
IBM Spectrum Control V5.2.16 (March 2018)
IBM Spectrum Control V5.2.17 (May 2018)

APAR status

• Closed as program error.

Error description

• While collecting performance data from an SVC/V7000 cluster, a
  Null Pointer Exception is thrown while
  attempting to find and return the I/O group associated with an
  SVC node object.
  The following message displays in the performance monitor job
  log:
  2016-10-24 17:18:31.562-0500 HWNPM2133W Performance data could
  not be collected for device
  <SVC_device_name> (<SVC_device_wwn>) due to an unknown error.
  The current samples are skipped.
  Performance monitor Trace log details:
  2016-10-24 17:18:31.562-0500  CollThread5      CollectorThread
  processCollection
           FATAL       Sample pass failed for device
  <svc_device_name> (<svc_device_wwn>)
  [<svc_device_ip_address>].
    java.lang.NullPointerException
      at
  com.ibm.tpc.perf.base.CollLogicSvc.getIOGroup(CollLogicSvc.java:
  3040)
      at
  com.ibm.tpc.perf.base.CollLogicSvc.postProcessNodes(CollLogicSvc
  .java:1205)
      at
  com.ibm.tpc.perf.base.CollLogicSvc.processSampPerfData(CollLogic
  Svc.java:971)
      at
  com.ibm.tpc.perf.base.CollLogic.summarize(CollLogic.java:2770)
      at
  com.ibm.tpc.perf.base.CollLogic.summarizePerfData(CollLogic.java
  :2396)
      at
  com.ibm.tpc.perf.base.CollLogic.performSamplePass(CollLogic.java
  :1479)
      at
  com.ibm.tpc.perf.base.CollectorThread.recoverableRun(CollectorTh
  read.java:1664)
      at com.ibm.tpc.perf.base.PmThread.run(PmThread.java:390)
  RECREATE STEPS:
  Observe skipped sample messages in SVC performance monitor tasks
  in 5.2.11
  ________________________________________________________________
  DB2 Version used for Server:    N/A
  The defect is against component:   5608TPC00 performance
  monitoring
  Server/Manager build/release (TPC):   5.2.11
  
  ________________________________________________________________
  Problem as described by customer:   Skipping samples/gaps in
  performance graphs
  Initial customer impact (low/med/high): med
  

Local fix

• contact support
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Control 5.2.x users monitoring an SVC/V7000     *
  * cluster                                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * While collecting performance data from an SVC/V7000 cluster, *
  * a Null Pointer Exception is thrown while attempting to find  *
  * and return the I/O group associated with an SVC node object. *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fix maintenance when available                         *
  ****************************************************************
  

Problem conclusion

• The fix for this APAR is targeted for the following maintenance
  package:
  
  | refresh pack | 5.2-TIV-TPC-RP0013 - target March 2017
  
  Fixed in IBM Spectrum Control 5.2.13
  
  http://www.ibm.com/support/docview.wss?&uid=swg21320822
  
  The target dates for future refresh packs do not represent a
  formal commitment by IBM. The dates are subject to change
  without notice.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  TPC

• Fixed component ID

  5608TPC00

Applicable component levels