IBM Support

IT32606: MQ .Net core application takes several seconds to re-establish aconnection with a queue manager after a failover

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APAR status

  • Closed as program error.

Error description

  • XMS Managed .NET core application takes up to 4 seconds to
    connect to the queue manager after a failover with multiple
    connection name.
    
    Example: hostname1(1234),hostname2(1235) are connection name
    used.
    
    When hostname1 fails and switched to hostname2 then several
    seconds of delay is observed when trying to connect to
    hostname2.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users using XMS managed .NET core application with multiple
    connection names to connect to queue manager. Multiple
    connection names when set in CCDT is also affected.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A logic error caused delays when using multiple connection names
    for reconnection, due to unnecessary additional operations when
    the connection name list was processed.
    

Problem conclusion

  • The XMS Managed .NET core code has been corrected to improve the
    performance when multiple connection names are used
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT32606

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7271

  • Reported release

    914

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-04-20

  • Closed date

    2020-07-10

  • Last modified date

    2020-07-10

  • 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

    IBM MQ BASE MP

  • Fixed component ID

    5724H7271

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"914","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
11 July 2020