IBM Support

IT07586: RECOVER.BPML BUSINESS PROCESS HALTS BUSINESS PROCESSES THAT HAVE THE SFTP CLIENT PUT SERVICE IN "WAITING ON I/O" STATUS

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APAR status

  • Closed as program error.

Error description

  • This issue only occurs once it has been a number of weeks
    since IBM Sterling B2B Integrator has been stopped and
    restarted. For the customer experiencing this issue, that
    interval was usually between six and eight weeks after the last
    restart. Once the issue starts occurring, when the SFTP PUT
    service goes into "Waiting on IO" status during transfers of
    one or more large files, if the Recover.bpml business process
    is run, it terminates the business processes assocated with the
    SFTP file transfers. There are no particular errors in the logs
    associated with this issue. It only occurred in cases where the
    Recover.bpml business process took at least 5 minutes to run.
    The issue occurred with the following settings in place in
    customer_overrides.properties:
    bprecovery.disableNodeCheck=false
    bprecovery.nodeCheckIn=5
    bprecovery.auto_terminate_days=3
    bprecovery.num_states=4
    bprecovery.auto_terminate_state2=interrupted_auto
    bprecovery.auto_terminate_state3=interrupted_man
    bprecovery.auto_terminate_state4=waiting
    bprecovery.auto_terminate_batch=10000
    

Local fix

  • STRRTC - 439690
    NM / NM
    Circumvention:
    There are two ways to work around this issue. One is to
    schedule a stop and restart of IBM Sterling B2B integrator at
    an interval shorter than when the issue starts happening. For
    example, if the issue is seen to happen after the application
    has been up for 5 weeks, schedule a stop and restart once every
    four weeks.
    
    The other option is to change the value of the
    defaultDelayWaitingOnIO parameter to -1 in either
    sftp.properties or customer_overrides.properties. Doing that
    prevents the service from ever going into "Waiting on IO"
    status, so the Mark Service does not take note of the businss
    process. This may not be a viable option on instances where
    there a lot of large files being transferred at the same time,
    as there is a possibility of the system backing up. That is
    because threads are recovered for use while a business process
    is in "Waiting on IO" status, but that thread recovery does not
    occur if the business processes cannot go into that status.
    

Problem summary

  • Users Affected:
    All
    
    PROBLEM DESCRIPTION:
    SFTP PUT Service goes into "Waiting on IO"
    status when transferring a large file and the Recover.bpml
    business process runs. Recover.bpml terminates the
    SFTP business process.
    
    Platforms Affected:
    All
    

Problem conclusion

  • A code fix is provided.
    
    Delivered In:
    
    5020500_11
    5020601_2
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT07586

  • Reported component name

    STR B2B INTEGRA

  • Reported component ID

    5725D0600

  • Reported release

    524

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-03-09

  • Closed date

    2015-10-21

  • Last modified date

    2016-04-18

  • 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

  • R526 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS3JSW","label":"IBM Sterling B2B Integrator"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.2.4","Edition":"","Line of Business":{"code":"LOB02","label":"AI Applications"}}]

Document Information

Modified date:
18 April 2016