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IT15317: MQ FOR NSS 5.3.1 INCOMING CONNECTIONS NOT ASSIGNED TO AGENTS THAT HAVE A LONG TERM CONNECTION.

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APAR status

  • Closed as program error.

Error description

  • WebSphere MQ for NSS 5.3.1 Under some conditions agents stay
    alive but don't accept new connections. That is the case if an
    agent has reached the maximum number of connections he is
    allowed to handle during his lifetime but the agent can't
    terminate before the last connection has been closed. The whole
    MQ system parallelism is getting stalled if the number of
    agents which have reached this state is increasing. If all
    agents have reached this state and no agents can be added
    because of another system limit, the whole MQ system is
    unreachable.
    

Local fix

Problem summary

  • Under some conditions agents stay alive but don't accept new
    connections. That is the case if an agent has reached the
    maximum number of connections it is allowed to handle during
    its lifetime but the agent can't terminate before the last
    connection has been closed.
    

Problem conclusion

  • If the maximum number of agents are running and all of them
    have reached their reuse count, an incoming connection will
    be dispatched to one of them.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT15317

  • Reported component name

    WEBS MQ NSS ITA

  • Reported component ID

    5724A3902

  • Reported release

    531

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-05-17

  • Closed date

    2016-06-09

  • Last modified date

    2016-06-09

  • 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

    WEBS MQ NSS ITA

  • Fixed component ID

    5724A3902

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ5M","label":"APAR"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
09 June 2016