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Status Future consideration
Created by Guest
Created on Mar 31, 2022

Increase OUTBUFF parameter for IBM MQ for z/OS

Hi there,

We have many Production lpars complaining about "log buffer waits" for MQ managers.

We have opened 2 IBM cases for that, we have implemented all best practices, but without success.

OUTBUFF parameter is limited to 4000.

Very small space, if we have a heavy utilization of MQ managers.

IBM suggested to created more MQ managers, but we already have 5 MQ managers, for example, in one of our Production lpars. And this also cause many troubles (change application, define other MQ manager, more CPU consumption, etc.).

We think MQ lab could increase OUTBUFF parameter, like we have for DB2 software.

This will be very good.

PS: we have discussed these points with other companies too, and they have similar problems, waiting for the increase of OUTBUFF. So, it is a common problem for big companies.

Idea priority High
  • Admin
    Matthew Leming
    May 12, 2022

    We agree that this should be done, and it alligns with other constraint relief work we would like to do.