IBM Support

PI16842: SCHEDULER MISSES FIRST TIME WITH CRON STRING SPECIFICATION

Fixes are available

8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14

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APAR status

  • Closed as program error.

Error description

  • A task is scheduled using the cron calendar. The task does not
    run the first time. It does run on the subsequent times.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: Scheduler misses the first next fire    *
    *                      time when using cron string having      *
    *                      range values                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem manifests when using the cron string having
    ranges, where the scheduler misses a next fire time
    when calculating the next closest time for the scheduler task
    to be fired. The following is an example cron string having
    range values (eg 9,12,18 & MON-FRI )when used exhibits the
    problem where one of the next closest time is missed.
    CRON String : 0 20 9,12,18 ? * MON-FRI | 0 0 17 ? * MON-FRI
    If the next fire times are calcuated starting at a time of
    Sat Apr 12 10:40:49 IST 2014, then the next fire times are
    calculated as in the below order where the time 9:20 is
    missing.
    next fire time: Mon Apr 14 12:20:00 IST 2014    (9:20 missing)
    next fire time: Mon Apr 14 17:00:00 IST 2014
    next fire time: Mon Apr 14 18:20:00 IST 2014
    

Problem conclusion

  • The scheduler code has been corrected to prevent missing
    next fire times when using cron strings that have range values.
    
    The fix for this APAR is currently targeted for inclusion
    in fix pack 7.0.0.37,8.0.0.10 & 8.5.5.4.  Please refer to the
    Recommended
    Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI16842

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-04-28

  • Closed date

    2014-08-12

  • Last modified date

    2014-08-12

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R700 PSY

       UP

  • R800 PSY

       UP

  • R850 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PI16842

Modified date: 12 August 2014