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IT05738: PERFORMANCE ISSUE WHEN ACCESSING A SHARED MAILBOX WITH LARGE NUMBER OF LINKED USERS.

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APAR status

  • Closed as program error.

Error description

  • When accessing a shared mailbox with a large number of links,
    performance gets worse as the number of links increases.
    

Local fix

Problem summary

  • Platforms Affected:
    All
    
    Users Affected:
    All
    
    Problem Description:
    Observed large number of permission style queries to the
    database when a mailbox user performs operations on a mailbox
    directory which is linked to a shared mailbox.
    Found application was unnecessarily performing permission checks
    on all users with access to the shared mailbox.
    Problem appears when number of users sharing a mailbox nears or
    exceeds User/Rights cache size.
    

Problem conclusion

  • Resolution Summary:
    Modify mailbox access logic to perform permission check only on
    user performing operation.
    
    Delivered In:
    5020500_3
    

Temporary fix

  • Increase UserRights cache size.
    

Comments

APAR Information

  • APAR number

    IT05738

  • Reported component name

    STR B2B INTEGRA

  • Reported component ID

    5725D0600

  • Reported release

    524

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-11-21

  • Closed date

    2015-02-20

  • Last modified date

    2015-03-20

  • 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

    STR B2B INTEGRA

  • Fixed component ID

    5725D0600

Applicable component levels

  • R525 PSY

       UP

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Document Information

Modified date:
20 March 2015