PK62643: High CPU consumption in conjunction with high storage usage whenrunning near term history due to large data chains

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• KO2O1421E NEAR-TERM HISTORY DATA COLLECTOR - WORKLOAD DANALYZE
  HAD LOOPED MORE THAN TEN TIMES. TERMINATING (SERVLOOP)
  
  Thread token being used to match IFCID records is unsuccessful
  for distserv threads in an environment where ACCUMACC is other
  than NO.
  
  Other circumstances can result in large volumes of data being
  left on the chain - this can manifest itself as
  increasing storage utilization
  increasing CPU consumption
  
  KO2O1310I NEAR-TERM HISTORY DATA COLLECTOR SERVER KO2ISRVB HAS
         TERMINATED (SVESTAE )
  CI0970: OMEGAMON SUBTASK ABEND CODE=04C78000
         PSW=070C00008142E8AA  TCB=00A81988
  CI0971: PROGRAM NAME=KO2ISRVB
         KO2O1307I NEAR-TERM HISTORY DATA COLLECTOR IS TERMINATING
         (H2INITE )
  
  OMEGAMON:   >> OB0925: Loop in OMEGAMON Base <<
  OMEGAMON:  OB0933 OMEGAMON resource cleanup initiated for abend
  U0925 RC=00000000
  OMEGAMON:  OB0935 OMEGAMON resource cleanup complete
  
  ABENDC78 SC78 C78 HISTORICAL ABENDC78-A0 KO2HSVPB
  ABEND878 S878 878
  ABENDA78 SA78 A78
  insufficient storage shortage
  

Local fix

• SET ACCUMACC=NO in DSNZPARM
  
  This setting will result in a significant increase in the volume
  of trace records being created. This can increase the SMF file
  volume if DB2 trace data is being collected to SMF.
  
  Also consider cycling the historical task every couple of hours
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: OMEGAMON XE for DB2 PE/DB2PM                 *
  *                 users of component:                          *
  *                 -   Common Collector                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Large chains of IFCID accounting data   *
  *                      building up in storage over time.       *
  ****************************************************************
  * RECOMMENDATION: Apply this PTF                               *
  ****************************************************************
  PROBLEM SUMMARY:
  Problem matching accounting data to package accounting data.
  Unmatched data was building up in storage until available memory
  is used up, or the historical collector exceeded CPU limit.
  
  PROBLEM CONCLUSION:
  Allow more tolerance in matching timestamps.  Assure all
  matching information is collected.  Assure that old unmatched
  data is cleaned in a timely manner.  Correct code point which
  was failing to output the accounting data.
  

Problem conclusion

• Allow more tolerance in matching timestamps.  Assure all
  matching information is collected.  Assure that old unmatched
  data is cleaned in a timely manner.  Correct code point which
  was failing to output the accounting data.
  
  KEYWORDS : CPU LIMIT IFCID ACCOUNTING DATA
  

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:

  UK37444 PK68262

Modules/Macros

•    KO2ACAPA KO2ACAPS KO2ACAP2 KO2CMVSC KO2CMVSF
  KO2CNSRB KO2DAUDA KO2DAUDS KO2DAUD2 KO2DBCIB KO2DCS2B KO2DDSBA
  KO2DDSBS KO2DDSB2 KO2DMSCA KO2DMSCS KO2DMSC2 KO2DTHDA KO2DTHDS
  KO2DTHD2 KO2DXSTB KO2DXS1A KO2DXS1S KO2DXS12 KO2DXS2A KO2DXS2S
  KO2DXS22 KO2HDTIB KO2HDTPB KO2HINTB KO2HMSGB KO2HPRCB KO2HPR1B
  KO2HPR2B KO2HSQIB KO2HSQPB KO2HSVPB KO2HTRMB KO2HVINB KO2HWLMB
  KO2ICOLA KO2ICOLS KO2ICOL2 KO2IINTB KO2LCAPB KO2OH2IB KO2OMGCB
  KO2ONTAB KO2TSB1B KO2TSB2B KO2TSB3B KO2TSB4B KO2WGETB
  

Fix information

• Fixed component name

  OM XE DB2PE/PM

• Fixed component ID

  5655OPE00

Applicable component levels

• R410 PSY UK37444

     UP08/06/19 P F806 Ž

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.