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Status Not under consideration
Workspace WebSphere Liberty
Created by Guest
Created on Oct 19, 2023

RELATED IDEAS

SERVERWLM Support for z/OS Connect

In order to achieve high availability in z/OS Connect, the product documentation (https://www.ibm.com/docs/en/zos-connect/zosconnect/3.0?topic=availability-sysplex-distributor) recommends use of a DVIPA to distribute workload between multiple LPARs. However, the proposed method using WLM only takes into account LPAR health/weighting and is not aware of the status of the z/OS Connect server and whether it is inoperable/degraded. This behaviour, whilst not ideal, is expected as the DVIPAs placed in front of z/OS Connect use BASEWLM as their distribution method.

Ideally, we would like the option to specify SERVERWLM on these DVIPAs. This would align with what has been implemented for IMS Connect (https://www.ibm.com/docs/en/ims/15.3.0?topic=connect-ims-support-zos-sysplex-distributor). Our understanding that that this would require z/OS Connect to send a numeric “server health status” report to WLM on startup and upon server health changes.

We understand that this feature would likely require customer involvement in testing/validation as calculating the server health will need to use multiple metrics at varying weights. Additionally, these metrics will need to be tolerant to business failures (such as transactions being deliberately stopped in IMS for change control) and lower the health score based on infrastructure failures (to eliminate false positives).

If you require any further detail, please let me know!

Idea priority High
  • Admin
    Graham Charters
    Reply
    |     Nov 16, 2023

    Thank you for the suggestion. The requirement does have merit, but looking at it with respect to our total backlog of requests we do not see sufficient interest in this enhancement to merit delivery any time in the foreseeable future. Given the unlikelihood that we would deliver this, we are declining the request rather than leaving it in an uncommitted state for an extended period of time. If you would like to discuss this decision further, please contact Graham Charters <charters@uk.ibm.com>.

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