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IV90179: "GATEWAY MEMORY GROWTH DUE TO UNDELETED JOURNAL CACHE ENTRIES".

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APAR status

  • Closed as program error.

Error description

  • A problem in the handling of stale journal deletes has been
    found,
    which results in the gateway being unable to translate source
    alert
    Serial numbers into target alert Serial numbers, and hence
    unable to
    find target journal entries for removal. Thus, the cache grows
    without
    bound until memory is exhausted.
    
    The course of events shows the problem:
    
    - Alert (with journals) is deleted.
    - Gateway processes that delete, removing the alert from the
    source and
    destination caches.
    - clean_journals_table automation runs, deleting stale journal
    entries.
    - Gateway processes the deleted journal entries, but can only
    get
    references to the source cache entries, as getting the
    destination
    cache entry requires dereferencing via the corresponding status
    entry
    (to map the Serial value) which has already been removed, so we
    never
    pick up the destination cache entry to remove it.
    

Local fix

  • NA
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of OMNIbus gateways.                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Gateways could show unbounded memory growth when processing  *
    * alerts.journal entries.                                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply the maintenance vehicles listed in the Problem         *
    * Conclusion.                                                  *
    ****************************************************************
    

Problem conclusion

  • The fix for this APAR is contained in the following maintenance
    package:
    | fix pack | 7.4.0-TIV-NCOMNIbus-FP0014
    | fix pack | 8.1.0-TIV-NCOMNIbus-FP0013
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV90179

  • Reported component name

    OBJTSVR UNIDIRC

  • Reported component ID

    5724O71UG

  • Reported release

    740

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-10-24

  • Closed date

    2017-08-09

  • Last modified date

    2017-08-09

  • 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

    NETCOOL/OMNIBUS

  • Fixed component ID

    5724O4800

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSHTQ","label":"Tivoli Netcool\/OMNIbus"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"740","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
23 July 2021