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Status Future consideration
Created by Guest
Created on Apr 10, 2017

Move Client Channel Buffers above the bar

This RFE is a request to have the option to move client channel (transmission) buffers above the bar

We are running MQv8 on z/OS. Datapower has numerous client connections to this MQ transmitting very large messages. Our CHIN storage below the bar is limited. We have encountered MQ Chin short-on-storage conditions related to message volume, message size and connections not getting cleaned up. We have met with IBM for Health checks and have had PMRs opened.

Idea priority High
RFE ID 103617
RFE URL
RFE Product IBM MQ
  • Guest
    Feb 1, 2021

    I see this as very important and indeed urgent.

    The effective client channel capacity of z/OS QMs is very low compared to the LUW product.

    For the most expensive and prestigious version of MQ - this is not acceptable.

    Please also provide this to retrofit on MQ v9.2 LTS

  • Guest
    Jun 24, 2020

    This is definitely needed so that more channels can be supported, especially in the event that some members of a QSG fail and all the workload moves onto fewer QMs.

    It would also help for z/OS to have a feature similar to uniform clustering in terms of re-balancing client connections once failed QMs came back up.

  • Guest
    Jun 19, 2019

    This RFE fits with our future plans for the chinit.

  • Guest
    Apr 11, 2017

    Yes, we want to. It is a good idea to have a choice to take the buffer high or not.
    Detlef