PK68262: High CPU consumption in conjunction with high storage usage when running 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
  ABEND878 S878 878
  ABENDA78 SA78 A78
  insufficient storage shortage
  
  Also watch for messages:
  KO2O0555I NEAR-TERM HISTORY DATA COLLECTOR - A BATCH JOB IS
  SUBMITTED TO
  FLUSH THE CONTENTS OF THE H2 DATA SET
  KO2R0133I CAPTURE DATA SET IS REUSABLE -
  OLDB.DB2.OMVINT.SY34.DI1A.RKD2VS01
  KO2O1313W NEAR-TERM HISTORY DATA COLLECTOR SUSPENDED DATA
  OLLECTION. NO
  AVAILABLE STORAGE DB2=DI1A (OUTBUFR )
  KO2O1314I NEAR-TERM HISTORY DATA COLLECTOR RESUMED DATA
  COLLECTION. STORAGE AVAILABLE DB2=DI1A (OUTBUFR )
  

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 : IFCID ACCOUNTING DATA MEMORY
             HISTORICAL COLLECTOR EXCEEDED CPU LIMIT
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

  PK62643

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

  UK37875

Modules/Macros

• KO2ACAPS KO2ACAP2 KO2CDSCB KO2CMVSC KO2CMVSF
  KO2CNADB KO2CNASB KO2CNSRB KO2CNTPS KO2CNTP2 KO2DAUDS KO2DAUD2
  KO2DBCIB KO2DCS2B KO2DDSBS KO2DDSB2 KO2DMSCS KO2DMSC2 KO2DTHDS
  KO2DTHD2 KO2DXSTB KO2DXS1S KO2DXS12 KO2DXS2S KO2DXS22 KO2HDTIB
  KO2HDTPB KO2HINTB KO2HMSGB KO2HPRCB KO2HPR1B KO2HPR2B KO2HSQIB
  KO2HSQPB KO2HSVPB KO2HTRMB KO2HVINB KO2HWLMB KO2ICOLS KO2ICOL2
  KO2IINTB KO2LCAPB KO2MI00B KO2MSBDB KO2MSB1B KO2MSB2B KO2MSB3B
  KO2MSB4B KO2MSUMB KO2OH2IB KO2OMGCB KO2ONTAB KO2OTHDB KO2OTHLB
  KO2OZM2B KO2SACS  KO2SAU1  KO2SAU2  KO2SAU3  KO2SAU4  KO2SAU6
  KO2SAU7  KO2SSUB  KO2SSUM  KO2TSB1B KO2TSB2B KO2TSB3B KO2TSB4B
  KO2WGETB KO2XLKDS KO2XLKD2
  

Fix information

• Fixed component name

  OM XE DB2PE/PM

• Fixed component ID

  5655OPE00

Applicable component levels

• R310 PSY UK37875

     UP08/07/08 P F807

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.