OA66608: PREDICTIVE FAILURE ANALYSIS JAVA/LANG/OUTOFMEMORYERROR HEAP SPACE SHARED FILESYSTEM ZFS

APAR status

• Closed as fixed if next.

Error description

• Predictive Failure Analysis (PFA) configurations require a ZFS
  to house historical collected data for the different PFA checks.
  
  
  In shared filesystem environments each LPAR should have a unique
  
  path to contain the data each PFA check uses.  When
  installations do not create unique paths per LPAR this can
  lead to corruption of PFA data files.  Such that records are
  truncated and a large range of the file is filled with 0s
  instead of the expected data.
  
  In the problem where this has been seen, the check can vary,
  but it involved accessing the file
  
  SYSNAME.5day.all.data file (PFA_JES2_RESOURCE_EXHAUSTION check)
  
  or
  
  SYSNAME.sum file (PFA_PRIVATE_STORAGE_EXHAUSTION).
  
  External symptoms seen would be the filesystem filling up
  with Javacore, heap, and TDUMP files during PFA Modeling
  of the affected check
  

Local fix

• Ensure that each LPAR has a unique path for its data in either
  the pfausers OMVS HOME() or the /etc/PFA/ini PFADIR= whichever
  is being used.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All z/OS 2.5 (HBB77D0) and above                             *
  * environments.                                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See APAR Abstract and Error                                  *
  * Description.                                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

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

Applicable component levels