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LO90143: EAS DEVICES SYNCING FOLDERS TOGETHER MAY MISS SOME MAILS IF NEXT SYNC INTERRUPTS A SYNC AND HAS DIFFERENT FOLDERS INCLUDED

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APAR status

  • Closed as program error.

Error description

  • A device using Exchange ActiveSync (EAS) to synchronize data
    could miss emails (or other data) if the following situation
    takes place.
    1. The device makes a request to sync N folders.
    2. The server is working on new mails to be synced in those
    folders.
    3. The device makes a request to sync a different set of folders
    (it cannot be the same set of N folders as in #1 or you won't
    hit the issue - it must be a different set).
    4. The server interrupts the sync from #1 when the request from
    #3 is received.
    5. The server responds to the sync from #3 but the mails that
    were detected as part of sync #1 are missing.
    
    Because of the requirement that the sync folders be different
    between the two syncs, this only impacts devices that sync
    multiple folders in the same sync request, so that at least
    excludes the Apple iOS devices which always syncs each folder
    separately.  BlackBerry 10 and some Windows Phone/Tablet devices
    are known to sync in the required manner to hit this issue, so
    they could be subject to this happening.
    
    This issue is specific to the EAS sync paths, so the Android and
    Apple iOS Verse clients which use SyncML as the sync protocol
    are not subject to this issue.
    

Local fix

Problem summary

  • This scenario is a fairly rare timing issue with applications
    using the Active Sync Protocl such as the Apple built in Mail
    client.
    

Problem conclusion

  • The IBM Traveler server has been updated to resolve this issue.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LO90143

  • Reported component name

    LOTUS NOTES TRA

  • Reported component ID

    5724E6204

  • Reported release

    901

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-06

  • Closed date

    2016-11-09

  • Last modified date

    2016-11-09

  • 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

    LOTUS NOTES TRA

  • Fixed component ID

    5724E6204

Applicable component levels

  • R901 PSY

       UP



Document information

More support for: IBM Traveler

Software version: 9.0.1

Reference #: LO90143

Modified date: 09 November 2016


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